CN101406931A

CN101406931A - Method for casting and forming middle cross-bracing two-axle bogie adapter and manufacturing technique

Info

Publication number: CN101406931A
Application number: CNA2008101742520A
Authority: CN
Inventors: 王克明; 郝施奇; 曹贵实
Original assignee: Qiqihar Railway Rolling Stock Co Ltd
Current assignee: CRRC Qiqihar Rolling Stock Co Ltd
Priority date: 2008-11-14
Filing date: 2008-11-14
Publication date: 2009-04-15

Abstract

The invention discloses a casting mould for an adapter of a middle-crossing supporting two-axle truck, which comprises a left half sand box, a right half sand box, a cambered surface sand core, and sand mould positioning pins, wherein the left half sand box and the right half sand box which take an axial symmetrical plane of the adapter as a parting surface; the cambered surface sand core is arranged along the axial direction of the adapter and is used for forming an inner cambered surface of the adapter, wherein the end part of the core head of the cambered surface sand core is exposed out of the casting mould, and the matching parts between the core head of the cambered surface sand core and a left half sand box base and a right half sand box base are step-shaped and are used for positioning the cambered surface sand core relative to the left half sand box and the right half sand box; and the sand mould positioning pins are connected with positioning pin sleeves or pin holes of the left half sand box and the right half sand box and are used for positioning the left half sand box and the right half sand box. The casting mould without sand boxes is convenient for vertical moulding, has simple and convenient operation, solves the problem of difficult cooperation in the operation of a plurality of people, ensures that the mould assembly is smooth, and is advantageous to keep the dimensional precision of the casting mould and improve the quality of cast parts. On the basis, the invention also discloses a method for assembling moulds of the casting mould for the adapter of the middle-crossing supporting two-axle truck and a process for producing the adapter of the middle-crossing supporting two-axle truck.

Description

The middle intersection supported two axle truck adapter casting mold, group type method and production technology

Technical field

The present invention relates to being connected between underframe and bogie, is that middle intersection supports two axle truck adapter casting mold, group type method and production technology specifically.

Background technology

The railway freight-car of the wheel track vehicles generally comprises car body, bogie, brake apparatus, coupler and draft gear etc. and partly forms.Wherein, the effect of bogie is a supporting body, and guided vehicle is along rail running, and bears the various load from car body and circuit.Bogie is divided into two axle truck, three-axle bogie etc.And two axle truck is divided into intersection brace type bogie, middle intersection brace type bogie etc. down.The middle brace type two axle truck that intersects mainly is made up of bolster, bogie side frame, adapter, axletree, wheel, brake apparatus, cross-braced device.Adapter is the part between axletree and bogie side frame, and is stressed very big; Simultaneously, adapter and bogie side frame, axletree fitting surface are more higher to dimensional requirement.

At present, the middle brace type two axle truck that intersects adopts the casting technique manufacturing with adapter (hereinafter to be referred as adapter), its production technology characteristic is that horizontal parting, water-glass sand flask molding, sand mold blow the CO2 gas hardening, adopt driving to hang mo(u)ld top half to carry out mould assembling, below briefly explain

See also Figure 1A, Figure 1B, wherein, Figure 1A is the schematic diagram of existing casting mold that technology is used, and view direction is the direction along adapter radial symmetric face; Figure 1B is the left view of Figure 1A, and this figure partly dissects the A among Figure 1A.This casting mold 100 comprises sand mold 1, sandbox 2, core 3, wherein: to the adapter horizontal parting, form mo(u)ld top half 101, mo(u)ld bottom half 102 in horizontal parting face H both sides.After mo(u)ld top half 101, mo(u)ld bottom half 102 mould assembling, can pour into a mould the running gate system that cup, cross gate 4, sprue 5, ingate 6 are formed, make casting metal flow into die cavity and rising head 7, form foundry goods 200.

See also Fig. 2, this figure is the existing processes flow chart, comprises moulding and coremaking, mould assembling, cast three big processes, wherein,

Described modeling process comprises:

S201, preparation sandbox, template and molding sand.

Wherein, sandbox comprises, sandbox, specifically determines shape according to somatotype shown in Figure 1A, Figure 1B.

S202, sandbox is positioned on the template.

S203, in sandbox, add the sand and the reality of pounding.

S204, drawn on rollover form upper and lower type respectively.

S205, casting mold blow the CO2 gas hardening.

Through the S201-S205 step, finished the moulding work of upper and lower type; In addition, coremaking also can be carried out with reference to aforesaid operations; After finishing moulding, coremaking, can and pour into a mould both mould assembling.

Please also refer to Fig. 3 A, Fig. 3 B, Fig. 3 C, wherein: Fig. 3 A is the schematic diagram of mo(u)ld bottom half; Schematic diagram when Fig. 3 B is upper and lower type mould assembling; Fig. 3 C is the schematic diagram after the upper and lower type mould assembling.Described mould assembling process may further comprise the steps:

S206, mo(u)ld bottom half is winched to down core mould assembling position and following core.

Usually use driving that mo(u)ld bottom half 102 (comprising sand mold 1-2 down, drag box 2-2) is winched to down core mould assembling position, lay core 3 after putting in place.

S207, sling mo(u)ld top half and upset.

Simultaneously, use driving that mo(u)ld top half 101 (comprising sand mold 1-1, cope 2-2) is sling, and overturn 180 °.

S208, with upper and lower type mould assembling.

Particularly, make mo(u)ld top half under case awl 2-3 guiding, B is combined on the drag box 2-2 along the mould assembling direction.

S209, upper and lower sandbox is fastening with the case card.

By the case card that cope 2-1, drag box 2-2 is fastening, make upper and lower type form complete casting mold 100 thus, thereby finish the preparation before the cast.

S210, cast.

Described casting process makes casting metal flow into die cavity and rising head promptly to running gate system casting metal material, forms foundry goods.Wherein, foundry goods forms the adapter finished product after solidifying further processing processing such as cooling, peeling, castings examination, heat treating castings.

There is open defect in the production technology of above-mentioned adapter, this be because: drawn on rollover, casting mold in the existing adapter production process blow CO2 gas hardening, three links of mould assembling, be subjected to equipment state, frock precision, CO2 pressure, blow the CO2 time, all multifactor influences such as moulding personnel and driving driver good teamwork degree are bigger, wherein the variation of each factor all will cause the casting quality fluctuation.

For example, in the drawn on rollover link: if equipment state is bad, shake or impact in the time of can causing drawn on rollover cause die cavity to become big; If distortion of molding box or housing-case wearing and tearing can cause the foundry goods mould shift, cause the foundry goods overall size to become big.

And for example, blow CO2 gas hardening link:, cause foundry goods to rise by the change of case size greatly after the cast if the CO2 insufficient pressure can cause casting mold hardened layer hardening depth not enough at casting mold; If blow the CO2 overlong time, can cause the casting mold over-blowing to make mo(U)ld face send out shortcake, cause sand washing during cast.

For another example, in the mould assembling link: driving driver's technical merit and the tacit degree that cooperates with the mould assembling personnel are not enough, can cause mould shift; Perhaps, mould assembling does not steadily produce floating sand, causes foundry goods sand holes defective.

In addition, existing process using magnesium iron special shape mo(u)lding box, metal form, metal apperance, it is complicated also to exist frock to make, the cost problem of higher.

There is above-mentioned numerous defective inevitably in prior art, cause the adapter product not meet the specification fully, therefore need be solved, wherein by improving technology, at first will solve adapter casting dimension instability, dimensional tolerance does not reach the problem of CT10 class precision.

Summary of the invention

In view of this, the invention provides a kind of middle support two axle truck adapter casting mold that intersects, can improve casting dimension accuracy, help improving casting quality.On this basis, the present invention also provides a kind of middle support two axle truck adapter casting mold group type method of intersecting to reach the production technology that middle intersection supports the two axle truck adapter.

For solving above technical problem, the middle intersection provided by the invention supported two axle truck adapter casting mold, comprising:

A left side half sand mold, right half sand mold are die joint with the axial plane of symmetry of adapter, and described die joint is perpendicular to the adapter intrados;

The cambered surface core axially is provided with along adapter, is used to form the adapter intrados; Described cambered surface core core print end exposes to described casting mold, and the matching part between described cambered surface core core print and a described left side half sand mold, the right half sand mold core print seat is step-like, is used for the location of described cambered surface core with respect to a described left side half sand mold, right half sand mold;

The sand mold alignment pin connects the set pin sleeve or the pin-and-hole of a described left side half sand mold, right half sand mold, is used for the location between a described left side half sand mold, right half sand mold.

Preferably, a described left side half sand mold, right half sand mold are no box moulding, and sclerosis in the employing type.

Preferably, the molding sand of a described left side half sand mold, right half sand mold is a self-hardening sand.

Preferably, described molding sand is the alicyclic organic self-setting silicate process.

Preferably, a described left side half sand mold, right half sand mold are the mounted split pattern moulding, and the pattern draft of pattern plate bolster is roughly 3 °.

Preferably, the pattern draft of a described left side half sand mold, right half sand mold and described cambered surface core core print contact-making surface is roughly 5 °.

Intersection supports the group type method of two axle truck adapter casting mold in provided by the invention, may further comprise the steps:

(101) left side half sand mold is stood up on group type pouring platform, and recline with left vertical end plate;

(102) the sand mold alignment pin is installed in left half sand mold set pin sleeve or the pin-and-hole;

(103) the cambered surface core vertically is positioned on the group type pouring platform, and level pushes in the core print seat of left half sand mold;

(104) right side half sand mold is stood up on group type pouring platform, level is pushed against on left half sand mold;

(105) judge whether to carry out next group casting mold group type,

If enter step (106);

If not, enter step (109);

(106) left side half sand mold is stood up on group type pouring platform, and recline with the right side half sand mold end face of last group of casting mold;

(107) the sand mold alignment pin is installed in left half sand mold set pin sleeve or the pin-and-hole;

(108) right side half sand mold is stood up on group type pouring platform, level is pushed against on left half sand mold, and returns step (105);

(109) half sand mold end face is placed stiffener on the right side;

(110) fastening to casting mold.

Intersection supports the production technology of two axle truck adapter in provided by the invention, may further comprise the steps:

Prepare molding sand, core sand and template;

Left and right half sand mold moulding, and the coremaking of cambered surface core;

To left and right half sand mold and cambered surface core orthogonal sets type;

At casting mold seat of honour cup;

Pour into a mould.

Preferably, described orthogonal sets type step adopts following method:

(105) judge whether to carry out next group casting mold group type,

If enter step (106);

If not, enter step (109);

(109) half sand mold end face is placed stiffener on the right side;

(110) fastening to casting mold.

Preferably, described step of overall modelling adopts following method:

Open puddle mixer;

In the left and right half sand mold pattern plate bolster of horizontal positioned, add sand;

Molding sand in the left and right half sand mold pattern plate bolster is pounded in fact, wipeed off;

Make the air-set in left and right half sand mold pattern plate bolster of left and right half sand mold;

Left and right half sand mold and pattern plate bolster are placed on the holder template;

The molding in the pattern plate bolster of left and right half sand mold is deviate from;

With the finally sclerosis on the holder template of left and right half sand mold.

Preferably, adopt core shooter to add sand.

Preferably, the pattern draft of described pattern plate bolster is roughly 3 °.

Compared with prior art, the present invention can improve casting dimension accuracy, help improving casting quality, particularly: flaskless foundry makes things convenient for the orthogonal sets type, it is easy and simple to handle, only needs the manual operation of a people just can finish, and operates the difficult problem that cooperates thereby eliminate many people, the assurance mould assembly is steady, helps keeping the mould dimension precision, improves casting quality.Problems such as especially, left and right half sand mold is a removable-flask moulding, and elimination distortion of molding box, sandbox cover wear and tear, drawn on rollover is not steady help keeping the mould dimension precision, improve casting quality; Sand mold air-set after the moulding is eliminated and to be blown the CO2 gas hardening and cause problems such as sand mold over-blowing or case depth are not enough, prevents the foundry goods case that rises, and guarantees that casting dimension is stable, improves the foundry goods tolerance grade.In addition, no box moulding also helps simplifies the frock process, reduces production costs.

Description of drawings

Figure 1A is the schematic diagram of existing casting mold that technology is used, and view direction is the direction along adapter radial symmetric face;

Figure 1B is the left view of Figure 1A, and this figure partly dissects the A among Figure 1A;

Fig. 2 is the process chart of existing adapter;

Fig. 3 A is the schematic diagram of mo(u)ld bottom half;

Schematic diagram when Fig. 3 B is upper and lower type mould assembling;

Fig. 3 C is the schematic diagram after the upper and lower type mould assembling;

Fig. 4 A is the schematic diagram of open type core print;

Fig. 4 B is the schematic diagram of closed core print;

Fig. 5 A is the schematic diagram of adapter casting mold of the present invention, and view direction is axial along adapter;

Fig. 5 B is the left view of Fig. 5 A;

Fig. 6 is the flow chart of adapter group type method of the present invention;

Fig. 7 A is the schematic diagram during left half sand mold of assembling among Fig. 6;

Fig. 7 B is the schematic diagram when assembling the cambered surface core among Fig. 6;

Fig. 7 C is the schematic diagram during right half sand mold of assembling among Fig. 6;

Fig. 7 D is the schematic diagram during another left half sand mold of assembling among Fig. 6;

Fig. 7 E is the schematic diagram behind a plurality of casting molds of assembling among Fig. 6;

Fig. 8 is the flow chart of adapter production technology of the present invention;

Fig. 9 is the moulding flow chart of left and right half sand mold among Fig. 8;

Figure 10 A is the schematic diagram that adds sand among Fig. 9;

Figure 10 B is the real schematic diagram of wipeing off of the medium-sized sand rammer of Fig. 9;

Figure 10 C is the schematic diagram of air-set among Fig. 9;

Figure 10 D places the schematic diagram that holds in the palm template with sand mold and template among Fig. 9;

Figure 10 E is the schematic diagram of molding among Fig. 9;

Figure 10 F is the schematic diagram that hardens on the holder template among Fig. 9.

The specific embodiment

Basic design of the present invention is, along the axial plane of symmetry vertical-parting of adapter, and no box moulding, orthogonal sets type on group type pouring platform forms the die cavity of adapter casting mold.

For ease of describing, below earlier the relational term that relates in the embodiment of the invention is made an explanation:

Horizontal parting, promptly die joint is parallel to the classifying method of horizontal plane, forms upper and lower half mould;

Vertical-parting, promptly die joint forms left and right half mould perpendicular to the classifying method of horizontal plane;

The horizontal group type refers in group type, the mould assembling process that die joint is parallel to the group type method of horizontal plane;

The orthogonal sets type refers in group type, the mould assembling process that die joint is perpendicular to the group type method of horizontal plane;

The open type core print shown in Fig. 4 A, after left half sand mold 1-3, the right half sand mold 1-4 mould assembling, is exposed perpendicular to the core print 3-1 end face major part of die joint, has only fraction to be covered by in the casting mold 100, is convenient to moulding, coremaking; Simultaneously, core print 3-1 can vertically erect core after strengthening, thereby realizes the orthogonal sets type, and the gas that helps in the core is discharged;

Closed core print shown in Fig. 4 B, after left half sand mold 1-3, the right half sand mold 1-4 mould assembling, all is covered by in the casting mold 100 perpendicular to the core print end face of die joint, thus can't the orthogonal sets type, mould assembling;

Sclerosis in the type refers to the sclerosis mode of sand mold sclerosis back molding earlier after the moulding, and technology of the present invention just belongs to this kind sclerosis mode;

Type hardens outward, refers to the sclerosis mode of first molding after-hardening after the moulding, and existing technology just belongs to this kind sclerosis mode;

Flask molding refers to formative method and the process of sandbox as the casting mold part, the i.e. formative technology of all using sandbox to finish in moulding, mould assembling, the casting process;

Removable-flask moulding without the formative method of sandbox, mainly refers to the method with front and back pressing plate extruding molding sand.

Below in conjunction with accompanying drawing the embodiment of the invention is specified.

Please be simultaneously referring to Fig. 5 A, Fig. 5 B, wherein: Fig. 5 A be the schematic diagram of adapter casting mold of the present invention, and view direction is axial along adapter; Fig. 5 B is the left view of Fig. 5 A.The present invention forms left half mould, right half mould to casting mold 100 vertical-partings, and wherein, left half mould, right half mould all do not comprise sandbox, and particularly: described casting mold 100 comprises parts such as left half sand mold 1-3, right half sand mold 1-4, cambered surface core 3, sand mold alignment pin 9.

A described left side half sand mold 1-3, right half sand mold 1-4 are die joint with the axial plane of symmetry of adapter; Described die joint is called vertical-parting face V perpendicular to adapter intrados (as the R110 cambered surface).Wherein, the full-size of left and right half sand mold sand lump equates (as 420mm * 380mm * 195mm), shape according to target foundry goods shape is determined to get final product, and does not repeat them here.

Preferably, a described left side half sand mold 1-3, right half sand mold 1-4 are no box moulding, and sclerosis in the employing type, with eliminate distortion of molding box, the wearing and tearing of sandbox cover, drawn on rollover not steadily, problems such as sand mold over-blowing or case depth.Adopt no box moulding, its holder template, group type pouring platform are general frocks, and mould adopts wooden template, plastics apperance, and it is single that frock is made tube, and cost is lower.

Preferably, a left side half sand mold 1-3, right half sand mold 1-4 adopt self-hardening sand to make, concrete to adopt the alicyclic organic self-setting silicate process be molding sand, makes the inside and outside sclerosis simultaneously of sand mold after the moulding, eliminates to blow the CO2 gas hardening in the prior art and cause sand mold over-blowing or the not enough problem of case depth.

Described cambered surface core 3 axially is provided with along adapter, is used to form the adapter intrados, and wherein: described cambered surface core 3 is the open type core print, and promptly the core print end exposes to casting mold 100, makes cambered surface core 3 can erect separately on group type pouring platform; Matching part between described cambered surface core 3 core prints and left half sand mold 1-3, the right half sand mold 1-4 core print seat is step-like, guarantees the location of cambered surface core 3 left relatively half sand mold 1-3, right half sand mold 1-4.

Described sand mold alignment pin 9 connects set pin sleeve or the dowel hole of a described left side half sand mold 1-3, right half sand mold 1-4, is used for the location between a described left side half sand mold 1-3, the right half sand mold 1-4.Usually, sand mold alignment pin 9 can be provided with two or more, to guarantee accurate positioning, so that realize the orthogonal sets type.

By sand mold alignment pin 9 is set, and be step-like with a left side half sand mold 1-3, right half sand mold 1-4 core print seat and cambered surface core 3 core print registration interface designs, not only solved orientation problem, also can prevent to cause drop, mould shift in the mould assembling process, thereby realize the orthogonal sets type smoothly.

Above-mentioned adapter casting mold 100, can improve casting dimension accuracy, help improving casting quality, particularly: flaskless foundry makes things convenient for the orthogonal sets type, and it is easy and simple to handle, only needs the manual operation of a people just can finish, thereby eliminate many people and operate the difficult problem that cooperates, the assurance mould assembling is steady, improves casting dimension accuracy, helps improving casting quality.Problems such as especially, left half sand mold 1-3, right half sand mold 1-4 are removable-flask moulding, and elimination distortion of molding box, sandbox cover wear and tear, drawn on rollover is not steady help keeping the mould dimension precision, improve casting quality; Sand mold air-set after the moulding is eliminated and to be blown the CO2 gas hardening and cause problems such as sand mold over-blowing or case depth are not enough, prevents the foundry goods case that rises, and guarantees that casting dimension is stable, improves the foundry goods tolerance grade.In addition, no box moulding also can be simplified the frock process, reduces production costs.

Preferably, left half sand mold 1-3, right half sand mold 1-4 adopt the mounted split pattern shape-designing, and the pattern draft of pattern plate bolster is about 3 °, so that moulding and the molding of left half sand mold 1-3, right half sand mold 1-4.Preferably, the pattern draft of left half sand mold 1-3, right half sand mold 1-4 and cambered surface core 3 core print contact-making surfaces is about 5 °, prevents that sand mold and core 3 core print mating surfaces from contacting when the orthogonal sets type too early, mutual friction and drop mutually.

On the basis of said structure, can be to casting mold 100 orthogonal sets types, below adapter group type method is described in detail.

Please be simultaneously referring to Fig. 6, Fig. 7 A-E, wherein: Fig. 6 be the flow chart of adapter group type method of the present invention; Fig. 7 A is the schematic diagram during left half sand mold of assembling among Fig. 6; Fig. 7 B is the schematic diagram when assembling the cambered surface core among Fig. 6; Fig. 7 C is the schematic diagram during right half sand mold of assembling among Fig. 6; Fig. 7 D is the schematic diagram during another left half sand mold of assembling among Fig. 6; Fig. 7 E is the schematic diagram behind a plurality of casting molds of assembling among Fig. 6.Described adapter group type method is the orthogonal sets type, and the group type applicable to a plurality of casting molds specifically may further comprise the steps:

S601, a left side half sand mold is stood up on group type pouring platform, and recline with left vertical end plate.

Shown in Fig. 7 A, left half sand mold 1-3 is stood up on group type pouring platform 10, and recline with left vertical end plate 10-1.In the present embodiment, left half sand mold 1-3 is removable-flask moulding for hardening.

S602, the sand mold alignment pin is installed in left half sand mold set pin sleeve or the pin-and-hole.

Shown in Fig. 7 B, in a left side half sand mold 1-3 set pin sleeve or pin-and-hole, put into sand mold alignment pin 9, so that the location between left and right half sand mold.Wherein, two sand mold alignment pins are set preferably, reliable to guarantee the location.Preferably, described sand mold alignment pin 9 usefulness water-glass sands are made, can air-set.

S603, the cambered surface core vertically is positioned on the group type pouring platform, and level pushes in the core print seat of left half sand mold.

Shown in Fig. 7 B, cambered surface core 3 vertically is positioned on the group type pouring platform 10, and level pushes in the core print seat of left half sand mold 1-3, so that form the adapter intrados.Wherein, the position between left half sand mold 1-3, right half sand mold 1-4 core print seat and the cambered surface core 3 core print mating surfaces is step-like, guarantees cambered surface core 3 left relatively half sand mold 1-3, right half sand mold 1-4 axial location.The core print end of described cambered surface core 3 exposes to casting mold 100, is the open type core print; It is convenient to realize the orthogonal sets type, also helps gas and discharges from exhaust duct 3-2.

S604, the right side half sand mold is stood up on group type pouring platform, level is pushed against on left half sand mold.

Shown in Fig. 7 C, half sand mold 1-4 stands up on group type pouring platform 10 with the right side, and level is pushed against on the left half sand mold 1-4, makes the vertical-parting face V of left and right half sand mold be adjacent to; At this moment, sand mold alignment pin 9 is inserted into, and in right half sand mold set pin sleeve or the pin-and-hole, makes and locatees between left and right half sand mold, finishes group type, the mould assembling of this group casting mold 100 thus.

S605, judge whether to carry out next group casting mold group type,

If enter step S606;

If not, enter step S609.

S606, a left side half sand mold is stood up on group type pouring platform, and recline with the right side half sand mold end face of last group of casting mold.

Shown in Fig. 7 D, half sand mold 1-3 stands up on group type pouring platform with a left side, and reclines with the right side half sand mold 1-4 end face of last group of casting mold, begins the group type of next group casting mold.

S607, the sand mold alignment pin is installed in left half sand mold set pin sleeve or the pin-and-hole.

S608, the right side half sand mold is stood up on group type pouring platform, level is pushed against on left half sand mold, and returns step S605.

Repeat said process, can finish the group type of a plurality of casting molds.

S609, half sand mold end face is placed stiffener on the right side.

Shown in Fig. 7 E, in the end the right side half sand mold 1-4 end face of one group of casting mold 100 (can only be a group) is placed stiffener 11 (as steel plate), guarantees that casting mold is not damaged.

S610, fastening to casting mold.

Shown in Fig. 7 E, on the right vertical end plate 10-2 jackscrew 10-3 is set; It is fastening to finish casting mold 100 by jackscrew 10-3, makes respectively to organize casting mold in conjunction with tight; Certainly, also can take other fastening means, not repeat them here.

So far, finished the group type of casting mold, behind the present cup 12, can pour into a mould.

Above-mentioned group of type method is applicable to the group type of many casting molds, and it is simple to operate, convenient, guarantee mould assembly steadily, not shift, help guaranteeing the precision of casting mold improving the adapter product quality.

On above-mentioned orthogonal sets type method basis, below adapter production technology of the present invention is specified.

See also Fig. 8, this figure is the flow chart of adapter production technology of the present invention.Described adapter production technology of the present invention may further comprise the steps:

S801, preparation molding sand, core sand and template.

Wherein, selected molding sand, core sand should be able to be hard certainly, to satisfy the requirement of hardening in the type; Type (core) sand is answered stable performance, is convenient to moulding, the coremaking operation, and the intensity after the molding sand sclerosis can satisfy the requirement of removable-flask moulding.Preferably, select organic ester water-glass self-hardening sand moulding, coremaking, to guarantee casting quality.

Described template comprises apperance, baffle plate, pattern plate bolster, and wherein, baffle plate, pattern plate bolster can be wooden model, and apperance can be the plastics apperance.

S802, left and right half sand mold moulding, and the coremaking of cambered surface core;

Owing to adopt the orthogonal sets type, thereby be that die joint carries out vertical-parting, make left and right half sand mold with the axial plane of symmetry of adapter.Preferably, removable-flask moulding technology is adopted in left and right half sand mold moulding.Simultaneously, make the cambered surface core, to form the intrados of adapter; Wherein, moulding, coremaking can be carried out simultaneously, to improve work efficiency.

It should be noted that, corresponding running gate system (comprising cross gate, sprue, ingate, rising head etc.) also should be set in this step; This is a prior art, and relevant running gate system method to set up please refer to relevant document, repeats no more.

S803, to left and right half sand mold and cambered surface core orthogonal sets type.

Wherein, the technology of orthogonal sets type can be selected aforementioned group of type method for use, does not repeat them here.

S804, at casting mold seat of honour cup.

S805, pour into a mould.

The molten metal material pours into the formation foundry goods; Then, through after the further processing processing of follow-up foundry goods through solidifying steps such as cooling, peeling, castings examination, heat treating castings, form the adapter finished product again

This adapter production technology is used orthogonal sets type method, and is simple to operate, convenient, helps guaranteeing the precision of casting mold, and improves the adapter product quality.

Preferably, left and right half sand mold is selected removable-flask moulding technology for use, is summarized as follows:

Please be simultaneously referring to Fig. 9, Figure 10 A-F, wherein: Fig. 9 be left and right half a sand mold moulding flow chart among Fig. 8; Figure 10 A is the schematic diagram that adds sand among Fig. 9; Figure 10 B is the real schematic diagram of wipeing off of the medium-sized sand rammer of Fig. 9; Figure 10 C is the schematic diagram of air-set among Fig. 9; Figure 10 D places the schematic diagram that holds in the palm template with sand mold and template among Fig. 9; Figure 10 E is the schematic diagram of molding among Fig. 9; Figure 10 F is the schematic diagram that hardens on the holder template among Fig. 9.This removable-flask moulding technology may further comprise the steps:

S901, unlatching puddle mixer.

Open puddle mixer,, make molding sand meet the requirements the continuous mulling of molding sand.

S902, in the left and right half sand mold pattern plate bolster of horizontal positioned, add sand.

Shown in Figure 10 A, after pattern plate bolster 8, apperance 13 all are placed on baffle plate 14.The molding sand that continuous muller is mixed adds in the left and right half sand mold pattern plate bolster 8 of horizontal positioned.Particularly, mode such as available artificial, core shooter adds sand by direction as shown D.

S903, the molding sand that left and right half sand mold pattern plate bolster is interior are pounded in fact, are wipeed off.

Shown in Figure 10 B, the molding sand that adds by the direction as shown E reality of pounding, and is wipeed off by direction as shown F, form left and right half sand mold thus.

S904, make the air-set in left and right half sand mold pattern plate bolster of left and right half sand mold.

Shown in Figure 10 C, because of the employing self-hardening sand, but the air-set in left and right half sand mold pattern plate bolster of described left and right half sand mold.

S905, left and right half sand mold and pattern plate bolster are placed on the holder template.

Shown in Figure 10 D, left and right half sand mold and pattern plate bolster are placed on the holder template 15, and by direction as shown G upset, so that left and right half sand mold molding is deviate from.Wherein, holder template 15 can be plank, so that save cost.

S906, the molding in the pattern plate bolster of left and right half sand mold is deviate from.

Shown in Figure 10 E, left and right half sand mold by direction as shown I moldings in the pattern plate bolster 8, deviate from, thereby form basic sand mold.

S907, with left and right half sand mold the holder template on finally the sclerosis.

Left and right half sand mold is after hardening fully on the holder template 15, and further the group type is to pour into a mould.

This kind removable-flask moulding technology can be eliminated problems such as the wearing and tearing of distortion of molding box, sandbox cover, drawn on rollover are not steady, helps keeping the mould dimension precision, improves casting quality; And sand mold air-set after the moulding is eliminated and to be blown the CO2 gas hardening and cause problems such as sand mold over-blowing or case depth are not enough, prevents the foundry goods case that rises, and guarantees that casting dimension is stable, improves the foundry goods tolerance grade.In addition, no box moulding also helps simplifies the frock process, reduces production costs.

The above only is a preferred implementation of the present invention, should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, and protection scope of the present invention should be as the criterion with claim institute restricted portion.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1, a kind of middle intersection supported two axle truck adapter casting mold, it is characterized in that, comprising:

A left side half sand mold, right half sand mold are die joint with the axial plane of symmetry of adapter;

2, the middle intersection as claimed in claim 1 supported two axle truck adapter casting mold, it is characterized in that a described left side half sand mold, right half sand mold are no box moulding, and sclerosis in the employing type.

3, the middle intersection as claimed in claim 2 supported two axle truck adapter casting mold, it is characterized in that the molding sand of a described left side half sand mold, right half sand mold is a self-hardening sand.

4, the middle intersection as claimed in claim 3 supported two axle truck adapter casting mold, it is characterized in that described molding sand is the alicyclic organic self-setting silicate process.

5, support two axle truck adapter casting mold as each described middle intersection of claim 1-4, it is characterized in that a described left side half sand mold, right half sand mold are the mounted split pattern moulding, the pattern draft of pattern plate bolster is roughly 3 °.

6, the middle intersection as claimed in claim 5 supported two axle truck adapter casting mold, it is characterized in that the pattern draft of a described left side half sand mold, right half sand mold and described cambered surface core core print contact-making surface is roughly 5 °.

7, a kind ofly it is characterized in that, may further comprise the steps as intersecting the group type method that supports two axle truck adapter casting mold during claim 1-4 is as described in each:

(105) judge whether to carry out next group casting mold group type,

If enter step (106);

If not, enter step (109);

(109) half sand mold end face is placed stiffener on the right side;

(110) fastening to casting mold.

8, a kind of middle production technology that supports the two axle truck adapter of intersecting is characterized in that, comprises step:

Prepare molding sand, core sand and template;

At casting mold seat of honour cup;

Pour into a mould.

9, the middle production technology that supports the two axle truck adapter of intersecting as claimed in claim 8 is characterized in that described orthogonal sets type step adopts following method:

(105) judge whether to carry out next group casting mold group type,

If enter step (106);

If not, enter step (109);

(109) half sand mold end face is placed stiffener on the right side;

(110) fastening to casting mold.

10, the middle as claimed in claim 8 or 9 production technology that supports the two axle truck adapter of intersecting is characterized in that described step of overall modelling adopts following method:

Open puddle mixer;

11, the middle production technology that supports the two axle truck adapter of intersecting as claimed in claim 10 is characterized in that, adopts core shooter to add sand.

12, the middle production technology that supports the two axle truck adapter of intersecting as claimed in claim 10 is characterized in that described molding sand is the alicyclic organic self-setting silicate process.

13, the middle production technology that supports the two axle truck adapter of intersecting as claimed in claim 10 is characterized in that the pattern draft of described pattern plate bolster is roughly 3 °.

14, the middle production technology that supports the two axle truck adapter of intersecting as claimed in claim 13 is characterized in that the pattern draft of a described left side half sand mold, right half sand mold and described cambered surface core core print contact-making surface is roughly 5 °.