JP2591855B2 - High-precision weight parts and their manufacturing method - Google Patents
High-precision weight parts and their manufacturing methodInfo
- Publication number
- JP2591855B2 JP2591855B2 JP2243068A JP24306890A JP2591855B2 JP 2591855 B2 JP2591855 B2 JP 2591855B2 JP 2243068 A JP2243068 A JP 2243068A JP 24306890 A JP24306890 A JP 24306890A JP 2591855 B2 JP2591855 B2 JP 2591855B2
- Authority
- JP
- Japan
- Prior art keywords
- infiltration
- weight
- precision
- metal
- affinity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 230000008595 infiltration Effects 0.000 claims description 21
- 238000001764 infiltration Methods 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 229910001385 heavy metal Inorganic materials 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- 229910052702 rhenium Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims 2
- 239000007769 metal material Substances 0.000 claims 2
- 229910052762 osmium Inorganic materials 0.000 claims 2
- 229910052697 platinum Inorganic materials 0.000 claims 2
- 239000010949 copper Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018054 Ni-Cu Inorganic materials 0.000 description 1
- 229910018481 Ni—Cu Inorganic materials 0.000 description 1
- 206010033307 Overweight Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、小型で且つ高精度の形状が必要とされる高
精度高比重金属部材すなわち高精度ウエイト部品および
その製造方法に関する。Description: TECHNICAL FIELD The present invention relates to a high-precision, high-specific-gravity metal member requiring a small and high-precision shape, that is, a high-precision weight component, and a method of manufacturing the same.
従来から、各種の用途に用いるバランスウエイト材と
して高比重のＷ−系焼結合金が知られている。Conventionally, a W-based sintered alloy having a high specific gravity has been known as a balance weight material used for various applications.
ところが、かかる焼結合金は焼結過程での収縮が大き
く、ポケットベル用振動子のバランサーのように小型で
しかも精密な形状が要求される部分にこのような焼結重
合金を適用するためには、型枠として削り代を見込んだ
型を使用して成形焼結し、焼結後の形状を調整するため
の研削又は切削等の仕上げ加工を行っている。However, such a sintered alloy has a large shrinkage during the sintering process, and such a sintered alloy is required to be applied to a portion where a small and precise shape is required, such as a balancer of a pager vibrator. Is formed and sintered using a mold that allows for a shaving allowance as a mold frame, and performs finishing processing such as grinding or cutting for adjusting the shape after sintering.
本発明において解決すべき課題は、焼結後の研削又は
切削等の仕上げ加工を全面又は一部分必要としない精密
な形状を有する高重量金属の部材を提供することにあ
る。It is an object of the present invention to provide a high-weight metal member having a precise shape which does not require finishing work such as grinding or cutting after sintering.
本発明の高精度ウエイト部品は、溶浸材との親和性を
有する溶浸助剤を0.05〜1.0重量％未満含有する重比重
金属基材粉末の仮焼結体に、重比重金属基材よりも低融
点の充填金属を溶浸せしめたことを特徴とする。The high-precision weight component of the present invention can be used to prepare a temporarily sintered body of a heavy metal substrate powder containing an infiltration aid having an affinity for an infiltration material in an amount of 0.05 to less than 1.0% by weight. Is also characterized by infiltrating a low melting point filler metal.
重比重金属基材として、高比重であって、機器構成部
材としての強度と表面硬さを有するW,Re,Ta,Os,Ir等の
焼結可能な金属を任意に使用することができる。As the metal substrate having a high specific gravity, any sinterable metal such as W, Re, Ta, Os, and Ir having a high specific gravity and having strength and surface hardness as a component of the device can be used.
また、溶浸用金属としては、比較的高比重で、仮焼結
体中への充填性が良く、しかも、使用雰囲気に対する耐
食性において優れた金属が好適に使用できる。この充填
金属としては、Cu,Ag,Auの様に融点が重比重金属基材よ
りかなり低い融点を持つ金属を使用できる。Further, as the metal for infiltration, a metal having a relatively high specific gravity, a good filling property in the pre-sintered body, and an excellent corrosion resistance to a use atmosphere can be suitably used. As the filler metal, a metal having a melting point much lower than that of the heavy metal substrate, such as Cu, Ag, or Au, can be used.
本発明の高精度高比重複合部材は、粒径が５〜10μｍ
の中粒子と１〜３μｍの小粒子とからなり前記中粒子の
配合割合が重量比で10〜40重量％を占める粒度組成を有
する重比重基材粉末に1.0重量％まで、好ましくは0.05
〜0.5重量％のNiのような充填助剤を含有せしめたもの
を成形型中に充填し、圧縮成形後、1000〜1200℃の温度
で仮焼結したのち、充填材料を仮焼結体中に溶浸するこ
とによって得られる。The high precision and high specific gravity composite member of the present invention has a particle size of 5 to 10 μm.
Up to 1.0% by weight, preferably 0.05% by weight, based on a heavy specific gravity base powder having a particle size composition comprising medium particles and small particles of 1 to 3 μm, wherein the mixing ratio of the medium particles occupies 10 to 40% by weight.
After filling the mold with a filling aid such as 0.5% by weight of Ni, compression-molding, and temporarily sintering at a temperature of 1000 to 1200 ° C., the filling material is placed in a temporarily sintered body. Obtained by infiltration into
本発明の高精度高比重複合部材は高い比重基材粉末の
成形密度が比較高く、しかも焼結が通常の焼結温度より
も低温で行われるので焼結に際しての収縮の程度を0.5
％以下に抑えることができる。しかも、溶浸温度は仮焼
結体基材の寸法に全く影響を与えない条件下で行われ、
その仮焼結過程では中粒子の間に存在する小粒子表面に
溶浸助剤が部分的に付着し、これが溶浸材への積極的な
吸着使用を有し、溶浸材の充填率は90％以上となり、理
論密度の98％の15.5〜16.5g/cm3の密度のものが製出で
きる。The high-precision high specific gravity composite member of the present invention has a relatively high molding density of the high specific gravity base material powder, and furthermore, since the sintering is performed at a lower temperature than the normal sintering temperature, the degree of shrinkage during sintering is reduced by 0.5.
% Or less. In addition, the infiltration temperature is performed under conditions that do not affect the dimensions of the temporarily sintered body base material at all,
In the preliminary sintering process, the infiltration aid partially adheres to the surface of the small particles existing between the medium particles, and this has an active use of adsorption to the infiltration material. The density is 90% or more, and a density of 15.5 to 16.5 g / cm 3 , which is 98% of the theoretical density, can be produced.
平均粒子径が１μｍの粉末が30重量％と、平均粒子径
が８μｍの粉末が70重量％とからなる粒度組成を有する
Ｗ粒子を、溶浸助剤としてNi粉末の含有量を０から1.5
重量％まで変化させて製品と同一の内容サイズを有する
超硬製型材に充填して、３トンの圧力の下でプレスし成
形して、第１図に示す形状を有し、各部分のサイズが製
品と同一のポケットベル用振動子のバランサー１を成形
した。W particles having a particle size composition of 30% by weight of a powder having an average particle diameter of 1 μm and 70% by weight of a powder having an average particle diameter of 8 μm were prepared by using a Ni powder content of 0 to 1.5 as an infiltration aid.
It is filled into a carbide mold material having the same content size as the product by changing to the weight%, pressed and molded under a pressure of 3 tons, and has the shape shown in FIG. Manufactured the same pager vibrator balancer 1 as the product.
この成形体をH2雰囲気下、1100℃の温度で仮焼結体を
得た。A pre-sintered body was obtained from this molded body at a temperature of 1100 ° C. in an H 2 atmosphere.
それぞれの仮焼結体を、H2雰囲気下、1100℃の温度
で、純度99.9％の純銅を仮焼結体中に溶浸した。Each of the calcined bodies was infiltrated with 99.9% pure copper at a temperature of 1100 ° C. in an H 2 atmosphere.
第１表に、各状態の態様を示す。 Table 1 shows the state of each state.
〔試験結果〕 上記表から次のことが言える。 [Test Results] The following can be said from the above table.
Niを添加しない場合の仮焼結体は強度不足によってハ
ンドリング性に劣ると共に、溶浸性が炉内雰囲気によっ
て左右されるが、溶浸性において劣るものであった。In the case where the Ni was not added, the temporary sintered body was inferior in handleability due to insufficient strength, and infiltration was affected by the atmosphere in the furnace, but was inferior in infiltration.
NiをＷ粉末に対して0.05〜0.5重量％配合したものは
仮焼結体自体のハンドリング性において優れていた。溶
浸性も良好であって、溶浸炉の雰囲気には左程左右され
ない。成形体に対する収縮率は0.01〜0.05であってポケ
ットベル振動子のバランス材としての形状精密性は充分
であった。The one in which 0.05 to 0.5% by weight of Ni was blended with respect to the W powder was excellent in the handleability of the temporary sintered body itself. The infiltration property is also good, and the atmosphere of the infiltration furnace is not so affected as to the left. The shrinkage ratio of the molded body was 0.01 to 0.05, and the precision of the shape of the pager vibrator as a balance material was sufficient.
さらに、NiをＷ粉末に対して0.5重量％以上配合した
ものは、溶浸時にNi−Cu合金が生成して、溶侵材の融点
が上昇し、Ｗ仮焼結体との濡れ角が低下し、Cuの溶浸性
が低下すると共に、NiのＷへの活性化によって生成体の
収縮度合が増大する。Furthermore, when Ni is blended at 0.5% by weight or more with respect to W powder, a Ni-Cu alloy is formed during infiltration, the melting point of the infiltrated material increases, and the wetting angle with the W pre-sintered body decreases. However, the infiltration of Cu decreases and the degree of shrinkage of the product increases due to activation of Ni into W.
以上のように、本発明によって得られた高比重体は、
形状精密性も良く、サイズを調整するための研削又は切
削等による外周部の後加工を必要としなかった。As described above, the high specific gravity body obtained by the present invention is:
The shape precision is good, and post-processing of the outer peripheral portion by grinding or cutting for adjusting the size is not required.
〔発明の効果〕 本発明によって以下の効果を奏することができる。[Effects of the Invention] The following effects can be obtained by the present invention.
（１） 均質で成形体に対して、殆ど収縮のない焼結重
合金部材を安価に得ることができる。(1) It is possible to obtain a sintered metal alloy member that is homogeneous and hardly shrinks with respect to a molded body at low cost.
（２） 殆ど収縮がないため、高精度かつサイズバラツ
キのない焼結重合金部材を得ることができる。(2) Since there is almost no shrinkage, it is possible to obtain a sintered metal alloy member with high precision and no size variation.
（３） 収縮を考慮した金型の設計が不必要である。(3) It is unnecessary to design a mold in consideration of shrinkage.
第１図は、本発明の適用したポケットベル用振動子のバ
ランサー形状を示す図である。 1:ポケットベル用振動子のバランサーFIG. 1 is a diagram showing a balancer shape of a pager vibrator to which the present invention is applied. 1: pager oscillator balancer
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−143346（ＪＰ，Ａ) 特開 昭50−5206（ＪＰ，Ａ) 特開 昭59−143347（ＪＰ，Ａ) 特公 昭45−6407（ＪＰ，Ｂ１) 特公 昭44−31688（ＪＰ，Ｂ１) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-143346 (JP, A) JP-A-50-5206 (JP, A) JP-A-59-143347 (JP, A) 6407 (JP, B1) JP44-31688 (JP, B1)
Claims (4)
〜1.0重量％未満含有する重比重金属基材粉末の仮焼結
体に、重比重金属基材よりも低融点の充填金属を溶浸せ
しめてなる高精度ウエイト部品。1. An infiltration aid having an affinity for an infiltration material of 0.05%
A high-precision weight component made by infiltrating a pre-sintered body of a heavy metal substrate powder containing less than 1.0% by weight with a filler metal having a lower melting point than the heavy metal substrate.
性を有する溶浸助剤がNiであり、重比重金属材がW,Re,T
a,Os,Irからなる群から選択された１種以上であり、ま
た充填金属がCu,Ag,Pt,Auからなる群から選択された１
種または２種以上の合金の組合せである高精度ウエイト
部品。2. The method according to claim 1, wherein the infiltration aid having an affinity for the infiltration material is Ni, and the specific gravity metal material is W, Re, T.
at least one selected from the group consisting of a, Os, and Ir, and the filler metal is one selected from the group consisting of Cu, Ag, Pt, and Au.
High-precision weight parts that are a combination of two or more alloys.
ｍの小粒子とからなり、前記中粒子の配合割合が全粒子
中に10〜40重量％を占める粒度組成を有する重比重金属
基材粉末に、溶浸材との親和性を有する溶浸助剤を0.05
〜1.0重量％含有せしめてなる混合物粉末を成形して充
填率が50〜75重量％の成形体とし、この成形体を1000〜
1200℃の温度で仮焼結したのち、重比重金属基材よりも
低融点の充填金属を溶浸する高精度ウエイト部品の製造
方法。3. Medium particles having an average particle size of 5 to 10 μm and 1 to 3 μm.
m having a particle size composition of 10 to 40% by weight of the total particles in the heavy specific gravity metal base powder having an affinity for the infiltration material. 0.05
The mixture powder containing up to 1.0% by weight is molded into a molded body having a filling factor of 50 to 75% by weight,
A method for manufacturing high-precision weight parts in which a pre-sintering is performed at a temperature of 1200 ° C, and then a filler metal having a lower melting point than the heavy metal substrate is infiltrated.
性を有する溶浸助剤がNiであり、重比重金属材がW,Re,T
a,Os,Irからなる群から選択された１種以上であり、ま
た充填金属がCu,Ag,Pt,Auからなる群から選択された１
種または２種以上の合金であることの組合せである高精
度ウエイト部品の製造方法。4. The method according to claim 3, wherein the infiltration aid having an affinity for the infiltration material is Ni, and the heavy metal material is W, Re, T.
at least one selected from the group consisting of a, Os, and Ir, and the filler metal is one selected from the group consisting of Cu, Ag, Pt, and Au.
A method for producing a high-precision weight component, which is a combination of one or more alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2243068A JP2591855B2 (en) | 1990-09-12 | 1990-09-12 | High-precision weight parts and their manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2243068A JP2591855B2 (en) | 1990-09-12 | 1990-09-12 | High-precision weight parts and their manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04124205A JPH04124205A (en) | 1992-04-24 |
| JP2591855B2 true JP2591855B2 (en) | 1997-03-19 |
Family
ID=17098320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2243068A Expired - Lifetime JP2591855B2 (en) | 1990-09-12 | 1990-09-12 | High-precision weight parts and their manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2591855B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9358000B2 (en) | 2006-12-15 | 2016-06-07 | Ethicon, Inc. | Tungsten alloy suture needles |
| CN101969860A (en) * | 2008-01-10 | 2011-02-09 | 伊西康公司 | Tungsten Alloy Suture Needle |
| JP2011133838A (en) * | 2009-11-25 | 2011-07-07 | Sumitomo Electric Ind Ltd | Reinforcing member and reinforcing method for fusion spliced portions of optical fibers |
| CN110976889A (en) * | 2019-12-30 | 2020-04-10 | 西安理工大学 | A kind of preparation method of high W content W-Cu composite material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5228089B2 (en) * | 1973-05-19 | 1977-07-25 | ||
| JPS59143347A (en) * | 1983-02-03 | 1984-08-16 | Sumitomo Electric Ind Ltd | Manufacture of material for semiconductor substrate |
| JPS59143346A (en) * | 1983-02-03 | 1984-08-16 | Sumitomo Electric Ind Ltd | Manufacture of material for semiconductor substrate |
-
1990
- 1990-09-12 JP JP2243068A patent/JP2591855B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04124205A (en) | 1992-04-24 |
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