CN115261667B - PAS copper and PAS copper production process and production equipment thereof - Google Patents

Abstract

The invention discloses a PAS copper and PAS copper production process and production equipment thereof. It includes the box, the inside of box is divided into melting chamber and detection chamber through the baffle, the top of baffle is equipped with the baffle opening, the inside of box is equipped with the slide rail, the slide rail is arranged in the top of box and is passed the baffle opening, sliding connection has sampling device and detection device on the slide rail, the below that just is located the slide rail in the detection chamber is equipped with the washing tank in proper order, pouring basin and etching tank, the inside of box still is equipped with the slag scraping device, slag scraping device installs at the top of box and arranges in between melting chamber and the washing tank, the outside of box is equipped with reinforced box, reinforced box is arranged in the top of melting chamber, reinforced box's inside is equipped with a plurality of storage chamber, the bottom of storage chamber is equipped with the passage, the passage runs through the top surface of box and is located the top of melting chamber. The beneficial effects of the invention are as follows: can reduce cost and improve yield.

Description

A kind of production technology of PAS copper, PAS copper and production equipment thereof

technical field

The invention relates to the related technical field of PAS copper materials in the bathroom industry, in particular to a PAS copper, a production process of PAS copper and production equipment thereof.

Background technique

There are many kinds of copper materials in the bathroom industry now, such as Hpb59-1, CB752S, DR copper, HB-20-Z, C-grade copper and other materials. The multi-element alloy composed of adding other alloy elements to ordinary brass is called Special brass is a special copper material that meets the national standard (GB/T2041-1989), European standard (EN12164), American standard (ASTM527) and other standards. The metal elements that are often added are lead, tin, aluminum, silicon, boron, etc. The purpose of adding alloy elements is to increase the tensile strength to improve the process performance, reduce cracking and burrs, increase the polishing yield, and eliminate pitting. Thus, the yield of quality products is improved. For example, the existing Hpb59-1 copper component control standard is shown in FIG. 2 .

Chinese patent authorization announcement number: CN105603225A, authorized announcement date May 25, 2016, discloses a brass alloy smelting device and a brass alloy smelting method, the smelting device includes a melting furnace and an electromagnetic generator installed on the melting furnace , the electromagnetic generator is used to apply electromagnetic disturbance to the smelting furnace, and the alloy melt in the smelting furnace is forced to generate convection under the action of electromagnetic disturbance. , the weight of pure copper and pure zinc, and then add the brass alloy return material, pure copper and composite covering agent into the smelting furnace to form an alloy melt, and heat the alloy melt to a molten state, then add pure zinc in several times In the melting furnace, the electromagnetic disturbance is applied to the alloy melt through the electromagnetic generator, and finally when the temperature in the melting furnace reaches the temperature of the furnace, the horizontal continuous casting starts. The disadvantages of the above patents are that in the feeding process, it is easy to increase the production cost and decrease the yield due to unqualified raw materials, improper selection of raw materials, improper ratio of raw materials and other reasons.

To sum up, there is a need for PAS copper, PAS copper production technology and production equipment that can reduce costs and improve yield.

Contents of the invention

The present invention aims to overcome the disadvantages of the prior art, such as unqualified raw materials, improper selection of raw materials, improper ratio of raw materials, etc., resulting in increased production costs and decreased yields, and provides a method that can reduce costs and increase yields. PAS copper, PAS copper production process and production equipment.

In order to achieve the above object, the present invention adopts the following technical solutions:

A kind of PAS copper, by weight percentage, comprises following formula raw material: copper 59%～63%, lead 0.1%～1.4%, iron 0.03%～0.35%, tin 0.2%～1.0%, aluminum 0.3%～0.75%, Nickel 0.2%~1.0%, Antimony 0~0.035%, Manganese 0.003%~0.01%, Silicon 0~0.05%, Bismuth 0.01%~1.0%, Sulfur 0.001%~0.005%, Arsenic 0.002%~0.1%, Chromium 0~ 0.004%, magnesium 0~0.002%, cobalt 0~0.0012%, phosphorus 0~0.02%, boron 0~0.0009%, and the balance is zinc.

Compared with the traditional special brass, the PAS copper produced by the above formula not only improves the casting performance and cutting performance, but also improves the casting quality, improves the strength of the brass, reduces shrinkage porosity and cracking of castings, and improves the yield rate , reduces costs, improves casting utilization, and is environmentally friendly, in line with NSF/ANSI61-2007 drinking water quality standards for metal precipitation.

A kind of production technology of PAS copper, comprises the following steps:

Step 1, add all the raw materials into the melting chamber according to the above ratio, melt them and stir to mix;

Step 2: Take an appropriate amount of copper liquid through the sampling cup, and use the camera to observe whether there are crystallization points and smoothness on the surface, so as to ensure that PAS copper has good casting performance and improve the surface quality of castings;

Step 3: Transfer the copper liquid in the sampling cup to the pouring trough and pour it into the pouring trough at a constant speed. The flow state of the copper liquid is observed by the camera. If the flow is uniform in thickness, the fluidity is good. If the flow is not good, check The composition of Al and Mg is properly adjusted to ensure the good fluidity of PAS copper, and the small sprue riser can be changed during mold design to improve the casting yield;

Step 4: After the copper liquid in the pouring tank is solidified into a sample, the chemical composition of the sample is detected by a spectrometer to control the content of several main elements such as copper, zinc, lead, aluminum, silicon, iron, magnesium, bismuth, and arsenic Within the standard range, if the copper content is low, it can be adjusted by adding electrolytic copper; if the copper content is high, it can be adjusted by adding zinc; if the lead and aluminum are low, it can be adjusted by adding lead and aluminum; In addition to controlling the material, it can also be controlled from the smelting process, which improves the proportioning accuracy, improves the casting quality, improves the yield rate, reduces the cost, and has a high casting utilization rate;

Step 5: Polish the surface of the sample with a polishing roller, and then inspect the polished mirror surface of the sample with a camera. Any copper water with hard spots on the polished mirror surface is unqualified, and refining agents can be added to adjust to eliminate hard spots , if it cannot be processed, it can be downgraded or scrapped to ensure that the brass has a good polishing yield and reduce the burrs caused by electroplating. The addition of refining agent Cu-Al-B is mainly used to eliminate surface hard spots and fine grains. The chemical and deoxidizer Mg is mainly used to remove oxygen and oxides, reduce the inclusion of oxides and gases into the cavity, improve wear resistance and improve casting performance, processing performance and pull-off resistance, so as to improve the production pass rate and cost reduction purposes;

Step 6. Finally, send the sample after polishing the mirror surface into the etching tank for 1 to 2 minutes, and observe the etching of the sample by the camera to ensure that the brass has good corrosion resistance and mechanical properties and reduces stress. Corrosion cracking tendency.

As preferably, the temperature of the melting chamber is increased to 1040° every time the trace element is added, stirred continuously during the temperature rise, and left to stand still at 1030° for 15 minutes to scrape off the slag to improve the quality of smelting.

Preferably, the etching solution is: high ammonium sulfate salt 150g+distilled water 1000Ml, and the etching effect is good.

The present invention also provides a production equipment for PAS copper, comprising a box body, the inside of the box body is divided into a melting chamber and a detection room by a partition, the top of the partition is provided with a partition opening, and the box body The interior of the slide rail is provided with a slide rail, which is placed on the top of the box and passes through the opening of the partition. A sampling device and a detection device are slidably connected to the slide rail, and the detection chamber is located below the slide rail. There are cleaning tanks, pouring tanks and etching tanks. The inside of the box is also provided with a slag removal device. The slag removal device is installed on the top of the box and placed between the melting chamber and the cleaning tank. The outside of the box body is provided with a feeding box, the feeding box is placed above the melting chamber, the inside of the feeding box is provided with several material storage rooms, the bottom of the storage room is provided with a material guide tube, and the guide tube The material pipe runs through the top surface of the box and is located above the melting chamber.

The raw materials required for production are stored in each storage room separately, and a control valve is installed at the outlet of the bottom of the storage room, and the material guide pipe is installed on the control valve, which can play a role in controlling the feeding; There is an annular cavity on the outside, and an electric heating band is installed in the annular cavity to heat up the melting chamber; a stirring rod is installed inside the melting chamber to perform stirring. All the raw materials are added into the melting chamber according to the ratio under the action of the control valve, and then the electric heating belt and the stirring rod work to melt the raw materials and stir and mix them; after that, a proper amount of copper liquid is scooped up by the sampling device, sent to the pouring trough and poured into it at a constant speed In the pouring tank, during this process, observe whether the surface of the copper liquid has crystallization points and is smooth and smooth through the detection device, so as to ensure that PAS copper has good casting molding performance and improve the surface quality of the casting, and observe the flow state of the copper liquid, If the thickness of the liquid is uniform, the fluidity is better. If the flow is not good, check the composition of Al and Mg, and then make appropriate adjustments to ensure that the PAS copper has good fluidity. When designing the mold, you can change the small sprue riser to improve The casting yield rate is improved; after the copper liquid in the pouring tank is solidified into a sample, the chemical composition of the sample is detected by the detection device, and the main components such as copper, zinc, lead, aluminum, silicon, iron, magnesium, bismuth, and arsenic are controlled. The element content is within the standard range. If the copper content is low, it can be adjusted by adding electrolytic copper. If the copper content is high, it can be adjusted by adding zinc. If the lead and aluminum are low, it can be adjusted by adding lead and aluminum. Other metals Elements can be controlled not only from the feed, but also from the smelting process, which improves the proportioning accuracy, improves the casting quality, improves the yield rate, reduces the cost, and has a high casting utilization rate; then the sample is polished and mirror-checked by the testing device. All copper water with hard spots on the polished mirror surface is unqualified. It can be adjusted by adding a refining agent to eliminate hard spots. For the burrs produced by electroplating, the refining agent Cu-Al-B is mainly used to eliminate surface hard spots and grain refinement, and the deoxidizer Mg is mainly used to remove oxygen and oxides, reducing the inclusion of oxides and gases into the cavity , in order to improve wear resistance and improve casting performance, processing performance and pull-off resistance, so as to achieve the purpose of improving production qualification rate and reducing cost; finally, the sample after polishing the mirror surface is sent to the etching tank for etching for 1~ For 2 minutes, observe the corrosion of the sample through the detection device to ensure that the brass has good corrosion resistance and mechanical properties and reduce the tendency of stress corrosion cracking. The casting temperature of PAS copper is 990±10°C. Every time trace elements are added, the melting chamber must be heated up to 1040°. Stir continuously during the heating process, and wait for 15 minutes at 1030°, and remove the molten slag through the slag removal device. slag to improve the quality of smelting. The sampling device and the slag removal device can be cleaned in the cleaning tank after each operation to remove the residual liquid attached to the surface, improve the control effect of raw material precision, improve the yield rate, and reduce costs.

Preferably, the sampling device includes a sliding seat one, the sliding seat one is installed on the slide rail and is slidably connected with it, the bottom of the sliding seat one is provided with a lifting frame one, and the lifting frame one and the sliding seat one are up and down Sliding connection, a sampling cup is installed on the lifting frame one, and the sampling cup is connected with the lifting frame one in rotation. A motor 1 is installed on the sliding seat 1, and the sliding seat 1 can be controlled by the motor 1 to slide back and forth on the slide rail. The motor 2 is installed on the lifting frame 1, and the sampling cup can be controlled to rotate by the motor 2 to scoop up the copper liquid and pour the copper liquid into the pouring tank. The structure is simple, the control is convenient, and the production cost is reduced.

Preferably, the detection device includes a sliding seat 2, the sliding seat 2 is installed on the slide rail and is slidably connected with it, the bottom of the sliding seat 2 is provided with a lifting frame 2, and the lifting frame 2 and the sliding seat 2 are up and down Slidingly connected, a rotating block is installed on the second lifting frame, and the rotating block is connected to the second lifting frame in rotation, and a camera, a spectrometer and a polishing roller are installed on the rotating block. A motor three is installed on the sliding seat two, and the sliding seat two can be controlled to slide back and forth on the slide rail by the motor three. The motor 4 is installed on the lift frame 2, and the rotating block can be controlled to rotate by the motor 4, so as to realize the work switching between the camera, the spectrometer and the polishing roller. The structure is simple, the control is convenient, and the production cost is reduced. Among them, the camera plays the role of observing the copper liquid and the sample; the spectrometer plays the role of detecting the chemical composition of the sample; the polishing roller plays the role of polishing the surface of the sample, and the motor 5 is installed on the rotating block, and the polishing roller can be controlled by the motor 5 to rotate.

As preferably, the pouring trough is placed on the side of the etching tank, and the bottom surface of the pouring trough is provided with a thimble groove on the side away from the etching trough, and the thimble groove is from the bottom to the notch towards the direction of the etching trough. Inclined, a thimble is installed in the thimble groove, and the thimble is slidably connected to the thimble groove. The cross-sectional shape of the erosion groove can be semi-circular or semi-elliptical. The detection chamber is equipped with a cylinder one for controlling the movement of the thimble. After the polishing mirror inspection is finished, the thimble can be ejected automatically, and the sample is etched from the top of the pouring tank to the etching tank. The structure is simple, the control is convenient, and the production cost is reduced.

As a preference, a drying ring is installed at the notch of the cleaning tank, an annular air duct is provided inside the drying ring, an annular opening is provided on the inner wall of the annular air duct, and an annular rotating shaft is installed at the annular opening. There are several heat-ventilating air holes distributed on the annular rotating block, and several rotating blades are arranged on the annular rotating block, and the rotating blades are placed in the annular air duct. Staggered distribution, the outer wall of the annular air duct is provided with hot air inlets, and the hot air inlets are matched with the rotating blades. An ultrasonic generator is installed in the cleaning tank, which can clean the sampling device and the slag removal device with the ultrasonic generator. The side wall of the cleaning tank is provided with a water inlet and an overflow port, and the clean cleaning liquid is continuously injected into the cleaning tank through the water inlet. In the tank, the suspended impurities in the cleaning tank are continuously discharged through the overflow port, which greatly improves the cleaning effect. There is also a slag outlet at the bottom of the cleaning tank, through which the sunken impurities can be discharged. After the sampling device or slag removal device is cleaned, it can be dried at the notch of the cleaning tank (inside the drying ring). There is a hot air fan connected to the hot air inlet in the testing room. The hot air is input into the annular air channel through the hot air inlet, and blows to the sampling device or the slag removal device through the hot air hole, and at the same time, the hot air will give a thrust to the rotating blade, driving the ring rotating block to rotate, so as to realize the sampling device or the slag removal device Omni-directional drying of the slag device.

As a preference, the slag removal device includes a rotating seat installed on the top of the box, the rotating seat is located at the opening of the partition, a swing rod is arranged on the rotating seat, and one end of the swing rod is installed on the rotating seat. The bottom is rotatably connected with it, the other end of the pendulum is provided with a telescopic shaft, the end of the telescopic shaft is equipped with a slag picking spoon, and the slag picking spoon is rotatably connected with the telescopic shaft. In order to ensure the removal efficiency of slag, the width of the slag removal spoon matches the width of the melting chamber, and the width of the cleaning tank is greater than the width of the slag removal spoon. Motor 6 is installed on the rotating seat, which can drive the pendulum to swing through motor 6; cylinder 2 is installed inside the pendulum to control the expansion and contraction of the telescopic shaft; motor 7 is installed at the end of the telescopic shaft, which can be driven by motor 6 The slag spoon turns. When picking up slag, the motor six of the rotating seat drives the pendulum to swing, the cylinder two of the pendulum controls the expansion and contraction of the telescopic shaft to adjust the position of the slag picking spoon, and then the motor seven at the end of the telescopic shaft drives the slag picking The slag spoon rotates to remove slag from the surface of the molten copper and improve the quality of smelting. The slag in the slag scraping spoon can be poured into the cleaning tank, and the clean cleaning liquid is continuously injected into the cleaning tank through the water inlet, and the suspended impurities in the cleaning tank are continuously discharged through the overflow port, and the sinking impurities can be Discharge through the slag outlet.

The invention has the beneficial effects of not only improving the casting performance and cutting performance, but also improving the casting quality, increasing the strength of brass, reducing the shrinkage and cracking of castings, improving the yield, reducing the cost, and improving the casting utilization rate. Moreover, it is green and environmentally friendly, in line with NSF/ANSI61-2007 drinking water quality standard for metal precipitation; it has good casting forming performance and improves the surface quality of castings; PAS copper has good fluidity, and the small sprue riser can be changed during mold design to improve Improve casting yield; improve wear resistance and improve casting performance, processing performance and pull-off resistance; have good corrosion resistance and mechanical properties, reduce the tendency of stress corrosion cracking; good etching effect; improve the strength of brass , recrystallization temperature and grain refinement; simple structure, convenient control, reduced production cost; improved cleaning effect and drying effect.

Description of drawings

Figure 1 is the composition control standard table of PAS copper;

Fig. 2 is the composition control standard table of Hpb59-1 copper;

Fig. 3 is a kind of perspective view of production equipment;

Fig. 4 is a kind of internal structure schematic diagram of production equipment;

Fig. 5 is the enlarged view of place A in Fig. 4;

Figure 6 is a perspective view of the drying ring;

Fig. 7 is a schematic diagram of the internal structure of the drying ring.

In the figure: 1. Melting chamber, 2. Sampling cup, 3. Camera, 4. Pouring tank, 5. Spectrometer, 6. Polishing roller, 7. Etching tank, 8. Box, 9. Testing room, 10. Partition Plate, 11. Partition opening, 12. Slide rail, 13. Swing rod, 14. Telescopic shaft, 15. Cleaning tank, 16. Slag scoop, 17. Feeding box, 18. Material storage room, 19. Material guide Tube, 20. Sliding seat 1, 21. Lifting frame 1, 22. Sliding seat 2, 23. Lifting frame 2, 24. Rotating block, 25. Ejector groove, 26. Ejector, 27. Drying ring, 28. Annular air duct , 29. annular opening, 30. ventilation hole, 31. rotating vane, 32. inlet of hot air, 33. rotating seat, 34. annular rotating block.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

In the embodiment described in Fig. 1, a kind of PAS copper, by weight percentage, comprises following formula raw material: copper 59%～63%, lead 0.1%～1.4%, iron 0.03%～0.14%, tin 0.2%～ 1.0%, Aluminum 0.3%~0.75%, Nickel 0.2%~1.0%, Antimony 0~0.014%, Manganese 0.003%~0.01%, Silicon 0~0.05%, Bismuth 0.01%~1.0%, Sulfur 0.001%~0.005%, Arsenic 0.002%~0.1%, chromium 0~0.004%, magnesium 0~0.002%, cobalt 0~0.0012%, phosphorus 0~0.02%, boron 0~0.0009%, and the balance is zinc.

A kind of production technology of PAS copper, comprises the following steps:

Step 1, add all the raw materials into the melting chamber 1 according to the above ratio, melt them and mix them with stirring;

Step 2, take an appropriate amount of copper liquid through the sampling cup 2, and use the camera 3 to observe whether the surface has crystallization points and is smooth;

Step 3: Transfer the copper liquid in the sampling cup 2 to the pouring trough 4 and pour it into the pouring trough 4 at a constant speed. The flow state of the copper liquid is observed by the camera 3. If the thickness of the flowing liquid is uniform, the fluidity is better. If If the flow is not good, check the composition of Al and Mg, and make appropriate adjustments;

Step 4, after the copper liquid in the pouring tank 4 is solidified into a sample, the chemical composition of the sample is detected by the spectrometer 5, and several main elements such as copper, zinc, lead, aluminum, silicon, iron, magnesium, bismuth, and arsenic are controlled The content is within the standard range. If the copper content is low, it can be adjusted by adding electrolytic copper. If the copper content is high, it can be adjusted by adding zinc. If the lead and aluminum are low, it can be adjusted by adding lead and aluminum. Other metal elements In addition to controlling from the feed, it can also be controlled from the melting process;

Step 5: Polish the surface of the sample with the polishing roller 6, and then use the camera 3 to inspect the polished mirror surface of the sample. Any copper water with hard spots on the polished mirror surface is unqualified, and can be adjusted by adding a refining agent to eliminate it. Hard point, if it cannot be handled, it can be downgraded or scrapped;

Step 6. Finally, the sample after polishing the mirror surface is sent to the etching tank 7 for etching for 1-2 minutes, and the camera 3 is used to observe the etching condition of the sample.

Every time the trace element melting chamber 1 is added, the temperature should be raised to 1040°, and the temperature should be stirred continuously at 1030° for 15 minutes to remove the slag.

The etching solution is: high ammonium sulfate salt 150g + distilled water 1000Ml.

Samples were taken every 4 hours.

As shown in Fig. 3 and Fig. 4, the present invention also provides a kind of production equipment of PAS copper, comprises box body 8, and the inside of box body 8 is divided into melting chamber 1 and detection chamber 9 by dividing plate 10, the top of dividing plate 10 A partition opening 11 is provided, and a slide rail 12 is provided inside the box body 8. The slide rail 12 is placed on the top of the box body 8 and passes through the partition opening 11. A sampling device and a detection device are slidably connected to the slide rail 12 to detect In the chamber 9 and below the slide rail 12, a cleaning tank 15, a pouring tank 4 and an etching tank 7 are arranged in sequence, and a slag removal device is also provided inside the box body 8, and the slag removal device is installed on the top of the box body 8 And be placed between the melting chamber 1 and the cleaning tank 15, the outside of the casing 8 is provided with a feeding box 17, the feeding box 17 is placed above the melting chamber 1, and the inside of the feeding box 17 is provided with several material storage chambers 18, the storage A material guide pipe 19 is provided at the bottom of the material chamber 18 , and the material guide pipe 19 runs through the top surface of the box body 8 and is located above the melting chamber 1 .

As shown in Figure 4, the sampling device includes a sliding seat-20, which is installed on the slide rail 12 and is slidably connected with it, the bottom of the sliding seat-20 is provided with a lifting frame-21, the lifting frame-21 and the sliding seat- 20 slides up and down to connect, and sampling cup 2 is installed on lifting frame one 21, and sampling cup 2 is connected with lifting frame one 21 rotations.

As shown in Figure 4, the detection device includes a sliding seat two 22, the sliding seat two 22 is installed on the slide rail 12 and is slidably connected with it, the bottom of the sliding seat two 22 is provided with a lifting frame two 23, the lifting frame two 23 and the sliding seat two 22 sliding connection up and down, lifting frame two 23 is equipped with rotating block 24, rotating block 24 and lifting frame two 23 rotatably connected, camera 3, spectrometer 5 and polishing roller 6 are installed on rotating block 24.

As shown in Fig. 4 and Fig. 5, pouring groove 4 is placed on the side of etching groove 7, and the bottom surface of pouring groove 4 and the side away from etching groove 7 are provided with thimble groove 25, and thimble groove 25 is from bottom to notch toward The direction of the etching groove 7 is inclined, and a thimble 26 is installed in the thimble groove 25, and the thimble 26 and the thimble groove 25 are slidably connected.

As shown in Figure 4, Figure 5, Figure 6 and Figure 7, a drying ring 27 is installed at the notch of the cleaning tank 15, and the inside of the drying ring 27 is provided with an annular air duct 28, and the inner wall of the annular air duct 28 is provided with a ring Opening 29, annular rotating block 34 is installed at annular opening 29 places, and annular rotating block 34 is distributed with several heat ventilation holes 30, and annular rotating block 34 is also provided with several rotating blades 31, and rotating blade 31 is placed in annular In the air duct 28 , the rotating blades 31 and the heat ventilation holes 30 are alternately distributed, and the outer wall of the annular air duct 28 is provided with a hot air inlet 32 , and the hot air inlet 32 is matched with the rotating blades 31 .

As shown in Figure 4, the slag removal device includes a rotating seat 33 installed on the top of the box body 8, the rotating seat 33 is located at the partition opening 11, the rotating seat 33 is provided with a swing rod 13, and one end of the swing rod 13 is installed on the rotating The bottom of seat 33 is also rotatably connected with it, and the other end of fork 13 is provided with telescopic shaft 14, and the end of telescopic shaft 14 is equipped with picking off slag scoop 16, and picking off slag scoop 16 is connected with telescopic shaft 14 in rotation.

working principle:

All raw materials are added into the melting chamber 1 according to the ratio under the action of the control valve, and then the electric heating belt and the stirring rod work to melt the raw materials and stir and mix;

Afterwards, take an appropriate amount of copper liquid through the sampling cup 2, transfer it to the pouring tank 4, and pour it into the pouring tank 4 at a constant speed. The flow state of the copper liquid, if the thickness of the liquid is uniform, the fluidity is better, if the flow is not good, check the composition of Al and Mg, and then make appropriate adjustments;

After the copper liquid in the pouring tank 4 is solidified into a sample, the chemical composition of the sample is detected by the spectrometer 5, and the contents of several main elements such as copper, zinc, lead, aluminum, silicon, iron, magnesium, bismuth, and arsenic are controlled. Within the standard range, if the detected copper content is low, it can be adjusted by adding electrolytic copper. If the copper content is high, it can be adjusted by adding zinc. If the lead and aluminum are low, it can be adjusted by adding lead and aluminum. In addition to control, it can also be controlled from the smelting process;

Then the polished mirror surface of the sample is inspected by the polishing roller 6. All copper water with hard spots on the polished mirror surface is unqualified, and refining agent can be added to adjust to eliminate hard spots. If it cannot be processed, it can be downgraded or scrapped;

After the inspection of the polished mirror surface is finished, the thimble 26 can be ejected automatically, and the sample is etched from the pouring tank 4 to the etching tank 7 for 1 to 2 minutes, and the etching condition of the sample is observed through the camera 3 .

Please be aware of:

Every time trace elements are added, the melting chamber 1 will be heated up to 1040°, stirred continuously during the heating process, waited for 15 minutes at 1030°, and the slag is removed by the slag removal device, and the slag is removed by rotating The motor six of the seat 33 drives the pendulum 13 to swing, and the expansion and contraction of the telescopic shaft 14 is controlled by the cylinder two of the pendulum 13 to adjust the position of the slag picking spoon 16, and then the motor 7 at the end of the telescopic shaft 14 drives the slag picking spoon 16 rotations to realize slag removal on the copper liquid surface.

The slag in the slag scraping spoon 16 can be poured into the cleaning tank 15, and the clean cleaning liquid is continuously injected into the cleaning tank 15 through the water inlet, and the suspended impurities in the cleaning tank are continuously discharged through the overflow port and sink. The impurities can be discharged through the slag outlet.

The sampling cup 2 and the slag scraping spoon 16 need to enter the cleaning tank 15 for ultrasonic cleaning after each work, so as to remove residual liquid attached to the surface. After cleaning, dry at the notch of the cleaning tank 15 (the inner side of the drying ring 27). In the sampling device or the slag removal device, during the drying process, the hot air will give a thrust to the rotating blade 31 to drive the ring rotating block 34 to rotate, so as to realize all-round drying.

Claims (7)

1. A kind of PAS copper, it is characterized in that, by weight percentage, comprises following formula raw material: copper 59%～63%, lead 0.1%～1.4%, iron 0.03%～0.14%, tin 0.2%～1.0%, aluminum 0.3%~0.75%, nickel 0.2%~1.0%, antimony 0~0.014%, manganese 0.003%~0.01%, silicon 0~0.05%, bismuth 0.01%~1.0%, sulfur 0.001%~0.005%, arsenic 0.002%~ 0.1%, chromium 0~0.004%, magnesium 0~0.002%, cobalt 0~0.0012%, phosphorus 0~0.02%, boron 0~0.0009%, the balance is zinc; The production technique of described PAS copper, comprises the following steps: Step 1, add all the raw materials into the melting chamber (1) according to the above ratio, melt them and stir to mix; Step 2, scoop an appropriate amount of copper liquid through the sampling cup (2), and observe whether there are crystallization points and smoothness on the surface with the camera (3); Step 3, transfer the copper liquid in the sampling cup (2) to the pouring trough (4) and pour it into the pouring trough (4) at a constant speed, and observe the flow state of the copper liquid by the camera (3), if the thickness of the liquid is uniform , the fluidity is better, if the fluidity is not good, check the composition of Al and Mg, and make appropriate adjustments; Step 4: After the copper liquid in the pouring tank (4) is solidified into a sample, the chemical composition of the sample is detected by the spectrometer (5) to control the amount of copper, zinc, lead, aluminum, silicon, iron, magnesium, bismuth, and arsenic. If the content of two main elements is within the standard range, if the detected copper composition is low, add electrolytic copper to adjust; if the copper composition is high, add zinc to adjust; lead and aluminum are low, add lead and aluminum to adjust; other metal elements Control from the feed or control from the melting process; Step 5: Polish the surface of the sample with the polishing roller (6), and then use the camera (3) to inspect the polished mirror surface of the sample. Any copper water with hard spots on the polished mirror surface is unqualified, and a refining agent is added. Adjust to eliminate hard spots, if not, downgrade or scrap; Step 6. Finally, put the sample after polishing the mirror surface into the etching tank (7) for etching for 1 to 2 minutes, and observe the etching condition of the sample by the camera (3); The PAS copper adopts the following production equipment, including a box (8), and the interior of the box (8) is divided into a melting chamber (1) and a detection chamber (9) by a partition (10), and the partition ( The top of 10) is provided with a partition opening (11), and the inside of the box (8) is provided with a slide rail (12), and the slide rail (12) is placed on the top of the box (8) and passes through the partition The plate opening (11), the sliding rail (12) is slidably connected with a sampling device and a detection device, and the detection chamber (9) is sequentially provided with a cleaning tank (15), pouring tank (4) and corrosion tank (7), the inside of the box (8) is also equipped with a slag removal device, and the slag removal device is installed on the top of the box (8) and placed in the melting chamber ( 1) and the cleaning tank (15), the outside of the box (8) is provided with a feeding box (17), the feeding box (17) is placed above the melting chamber (1), and the feeding box ( 17) There are several material storage chambers (18) inside, the bottom of the material storage chamber (18) is provided with a material guide tube (19), and the material guide tube (19) runs through the top of the box (8) and located above the melting chamber (1), a drying ring (27) is installed at the notch of the cleaning tank (15), and an annular air duct (28) is provided inside the drying ring (27). An annular opening (29) is provided on the inner wall of the annular air duct (28), and an annular rotating block (34) is installed at the annular opening (29), and several air passages are arranged in a ring on the annular rotating block (34). Hot air holes (30), the annular rotating block (34) is also provided with several rotating blades (31), the rotating blades (31) are placed in the annular air duct (28), and the rotating blades (31) Alternately distributed with the heat ventilation holes (30), the outer wall of the annular air duct (28) is provided with a heat inlet (32), and the heat inlet (32) is matched with the rotating blade (31). 2. A kind of PAS copper according to claim 1, characterized in that, in the production process, the temperature of the melting chamber (1) must be raised to 1040 ° every time the trace element is added, and the temperature is continuously stirred during the heating process. °Stay for 15 minutes and remove the slag. 3. A kind of PAS copper according to claim 1, is characterized in that, etching solution is: high ammonium sulfate salt 150g+distilled water 1000Ml. 4. A PAS copper according to claim 1, characterized in that the sampling device includes a sliding seat one (20), and the sliding seat one (20) is installed on the sliding rail (12) and is slidably connected with it , the bottom of the sliding seat one (20) is provided with a lifting frame one (21), the lifting frame one (21) and the sliding seat one (20) are slidingly connected up and down, and the lifting frame one (21) is installed with The sampling cup (2), the sampling cup (2) and the lifting frame one (21) are rotatably connected. 5. A PAS copper according to claim 1, characterized in that the detection device includes a sliding seat two (22), and the sliding seat two (22) is installed on the slide rail (12) and is slidably connected with it , the bottom of the sliding seat 2 (22) is provided with a lifting frame 2 (23), the lifting frame 2 (23) and the sliding seat 2 (22) are slidingly connected up and down, and the lifting frame 2 (23) is installed with The rotating block (24), the rotating block (24) is connected to the lifting frame two (23) in rotation, and the camera (3), spectrometer (5) and polishing roller (6) are installed on the rotating block (24). 6. A PAS copper according to claim 1, characterized in that the pouring tank (4) is placed on the side of the etching tank (7), and the bottom surface of the casting tank (4) is far away from the etching tank One side of (7) is provided with a thimble groove (25), and the thimble groove (25) is inclined toward the direction of the etching groove (7) from the bottom to the notch, and the thimble groove (25) is installed with a thimble ( 26), the thimble (26) is slidingly connected with the thimble groove (25). 7. A PAS copper according to claim 1, characterized in that the slag removal device includes a rotating seat (33) installed on the top of the box (8), and the rotating seat (33) is located on the partition At the opening (11), a swing rod (13) is provided on the rotating base (33), and one end of the swing rod (13) is installed on the bottom of the rotating base (33) and connected to it in rotation, and the swing rod ( The other end of 13) is provided with a telescopic shaft (14), and the end of the telescopic shaft (14) is equipped with a slag scraping spoon (16), and the slag scraping spoon (16) and the telescopic shaft (14) are rotatably connected .

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