JPH0266106A - Manufacture of low strain sintered product and product thereof - Google Patents
Manufacture of low strain sintered product and product thereofInfo
- Publication number
- JPH0266106A JPH0266106A JP21613888A JP21613888A JPH0266106A JP H0266106 A JPH0266106 A JP H0266106A JP 21613888 A JP21613888 A JP 21613888A JP 21613888 A JP21613888 A JP 21613888A JP H0266106 A JPH0266106 A JP H0266106A
- Authority
- JP
- Japan
- Prior art keywords
- component
- sintering
- sintered
- high density
- components
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000005245 sintering Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000002344 surface layer Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 11
- 239000010949 copper Substances 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 230000000452 restraining effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000011812 mixed powder Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 229910004837 P—Sn Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
建設機械や一般産Ｔ４機械に使用されるスラストリング
、シールリング等の薄肉リングや、薄肉円板、薄肉円筒
等の焼結時に歪み易い部品を低歪で焼結するようにした
低歪焼結品の製造方法及び低歪焼結品に関するものであ
る。[Detailed Description of the Invention] (Industrial Application Field) Parts that are easily distorted during sintering, such as thin-walled rings such as thrust rings and seal rings, thin-walled disks, and thin-walled cylinders used in construction machinery and general T4 machines. The present invention relates to a method for manufacturing a low-distortion sintered product, in which a low-distortion sintered product is sintered with low distortion, and the low-distortion sintered product.
（従来の技ｌ＋ＦＴ）
一般に、スラストリングのような薄肉リングの焼結体は
、高密度化の過程に於て大きく変形する。このように変
形する原因は、焼結炉内での焼結晶の温度分布の不均一
性や、収縮時の焼結体と基板との摩擦抵抗の不均一性に
よるものと考えられており、例えば外径１００ｍｍ’、
内径８０ ｍ ｍ ’、厚さ４ ｍｍの薄肉リング品で
は真円度、そりが各々１ ｍｍ以上を越えることも珍し
くない。前記、真円度、そりの発生を押さえるために、
従来、治具または空圧、液圧によるプレス圧力を印加し
ながら焼結したり、焼結後にサイジング、コイニングと
呼ばれる寸法出しのための再加圧処理が施されている。(Conventional Technique 1+FT) Generally, a thin ring sintered body such as a thrust ring is greatly deformed during the process of densification. The cause of this deformation is thought to be due to non-uniformity in the temperature distribution of the sintered crystal in the sintering furnace and non-uniformity in the frictional resistance between the sintered body and the substrate during shrinkage. Outer diameter 100mm',
In a thin ring product with an inner diameter of 80 mm' and a thickness of 4 mm, it is not uncommon for the roundness and warpage to each exceed 1 mm or more. As mentioned above, in order to prevent roundness and warpage,
Conventionally, sintering is performed while applying press pressure using a jig or pneumatic pressure or hydraulic pressure, and after sintering, a repressurization process called sizing or coining is performed to obtain dimensions.
（発明が解決しようとする課題）
前記従来の技術に於ては、治具を使用したり、空圧、液
圧によるプレス加圧が必要であるため生産性が低く、又
設備費も高価になる欠点があった。又、サイジング、コ
イニング処理では、焼結体をより高密度化する上では効
果的な方法であるが、真円度、そりが一定限度以上にな
るとこの処理が不可能になるため、取り代を見込んだ焼
結晶を製作する必要があり、そのために歩留まりを低下
させ、コストアップの原因となっていた。(Problems to be Solved by the Invention) The conventional techniques described above have low productivity and high equipment costs because they require the use of jigs and pressurization using pneumatic or hydraulic pressure. There was a drawback. In addition, sizing and coining treatments are effective methods for making the sintered body more dense, but if the roundness or warpage exceeds a certain limit, this treatment becomes impossible, so it is necessary to reduce the machining allowance. It is necessary to produce sintered crystals according to the specifications, which lowers the yield and causes an increase in costs.
（課題を解決するだめの手段）
本発明は前記従来の技術に於ける課題を解決するために
成されたもので、２種以上の多層の異種成分の層から成
り該異種成分のうち、一つの成分が高密度に焼結する温
度に於ては、他の成分は殆ど収縮または膨張を示さない
成分に調整するようにした組合わせより成ることを特徴
とする低歪焼結品の製造方法及び、該製造方法によって
得られる低歪焼結品を用いることによって目的を達成す
ることができる。(Means for Solving the Problems) The present invention has been made to solve the problems in the prior art, and consists of two or more multi-layered layers of different components, in which one of the different components is A method for manufacturing a low-distortion sintered product, characterized in that the combination is such that at a temperature at which one component is sintered to a high density, the other components are adjusted to show almost no contraction or expansion. Further, the object can be achieved by using a low strain sintered product obtained by the manufacturing method.
（１乍用）
異種成分のうち、焼結温度に於て高密度化される成分は
、その収縮性のため変形し易いが、前記焼結温度に於て
、寸法変化が少なく調整された他の成分が隣接している
ので、該他の成分によって、前記焼結によって高密度化
される成分の変形が抑制される。又、前記の作用に於て
。(For 1 piece) Among the different components, the component that becomes denser at the sintering temperature is easily deformed due to its shrinkage, but at the sintering temperature, the component has been adjusted to have less dimensional change. Since these components are adjacent to each other, deformation of the component that is densified by the sintering is suppressed by the other component. Also, in the above action.
異種成分のうち焼結によって高密度化される成分の変形
が大きく、これに隣接する他方の成分によって、その変
形量を抑制すると、高密度化される成分にクラックが入
ることがある。この場合には、焼結温度を少し低めに調
整し、予備焼結した後、サイジング、コイニング等の再
加圧処理を施した後、本焼結を行えば、マイクロクラッ
クの発生を防止できる。Among different components, if the component to be densified by sintering is largely deformed, and the amount of deformation is suppressed by the other component adjacent to it, cracks may appear in the component to be densified. In this case, the generation of microcracks can be prevented by adjusting the sintering temperature a little lower, performing preliminary sintering, performing repressurization such as sizing and coining, and then performing main sintering.
（実施例）
以下、添付図面を参照し゛Ｃ本発明の実施例を詳述する
。(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図は、ブルドーザやパワーショベル等建設機械の差
動＠星歯車式終減速機に使用されるスラストリングであ
り、表面層にはＣｕ−５ｎ青銅系焼結材１を、又中間層
にはＦｅ −Ｃｕ −Ｐ −Ｓｎ鉄系焼結材２を用いた
構成から成っている。前記Ｃｕ５ｎ青銅系焼結材１用の
混合粉末は、２５０メツシユ以下のＳｎ粉を１１重量％
、又Ｐが０．８重量％となるように２５０メツシユ以下
のＰ−Ｆｅ粉（Ｆｅ −２７１１量％Ｐ、および２５０
メ７シユ以下のｐｂ粉を３重量％、残りが２００メツシ
ユ以下の電解鋼から成る混合粉に、 ０．０５重量％の
ケロシンを添加し、十分均一になるように混合した。又
７鉄系焼結材２用の混合粉末は前記Ｃｕ、Ｓｎ、 Ｐ−
Ｆｅ粉を用いてＣｕが１５重量％、Ｓｎが３重量％にな
るようにＰ −Ｆｅ粉を、そして残りが１００メツシユ
以下のＦｅ粉から成る混合物に０．０５重量％のケロシ
ンを添加し、十分均一になるように混合した。成形は、
金型の下パンチをグイ上面から２．５ｍｍ下げた状態で
前記Ｃｕ −Ｓｎｉ￥銅系混合粉末を充填した後、下パ
ンチをさらに５ ｍｍ下げて、前記Ｆｅ系混合粉末を充
填し、再度下パンチを２．５ｍｍ下げて、前記Ｃｕ−３
ｎ青銅系混合粉末を充填した後、面圧４．０ｔｏｎ／
ｃｍ２でプレス成形した。その後、前記成形体をＡＸガ
ス雰囲気炉中で８８０℃で、４５分間焼結処理したう焼
結後の真円度は内径８０ｍｍ−に対して０．０５ｎｔｍ
、そりは０．０８ｍｍと極めて良く、寸法條正無しで使
用できた。尚、表面層の焼結後の相対密度も９６２以上
に向上しており、三ＮＩ構遺の焼結体の引張強度も３２
ｋｇ／ｍｍ’であり、十分実用できる品質が得られた。Figure 1 shows a thrust ring used in the differential @star gear type final reducer of construction machinery such as bulldozers and power shovels.The surface layer is made of Cu-5n bronze sintered material 1, and the middle layer is is composed of a Fe-Cu-P-Sn iron-based sintered material 2. The mixed powder for the Cu5n bronze-based sintered material 1 contains 11% by weight of Sn powder of 250 mesh or less.
, and P-Fe powder of 250 mesh or less (Fe-2711 mass% P, and 250 mesh
0.05% by weight of kerosene was added to a mixed powder consisting of 3% by weight of PB powder with a mesh size of 7 or less, and the remainder was electrolytic steel with a mesh size of 200% or less, and the mixture was mixed sufficiently uniformly. In addition, the mixed powder for the 7-iron-based sintered material 2 contains the above-mentioned Cu, Sn, P-
Adding 0.05% by weight of kerosene to a mixture of P-Fe powder using Fe powder so that Cu is 15% by weight and Sn is 3% by weight, and the remainder is Fe powder of 100 mesh or less, Mixed thoroughly until homogeneous. The molding is
After lowering the lower punch of the mold by 2.5 mm from the upper surface of the mold and filling it with the Cu-Sni\copper-based mixed powder, lowering the lower punch further by 5 mm, filling it with the Fe-based mixed powder, and lowering it again. Lower the punch by 2.5 mm and
n After filling the bronze mixed powder, the surface pressure was 4.0 ton/
It was press-molded in cm2. Thereafter, the molded body was sintered at 880°C for 45 minutes in an AX gas atmosphere furnace.The roundness after sintering was 0.05 ntm for an inner diameter of 80 mm.
The warpage was extremely good at 0.08 mm, and it could be used without any dimensional adjustments. Furthermore, the relative density of the surface layer after sintering has improved to over 962, and the tensile strength of the sintered body of the 3NI structure has also increased to 32.
kg/mm', and a quality sufficient for practical use was obtained.
（発明の効果）
以上詳述した如く、本発明によるときは次の効果を奏す
る。(Effects of the Invention) As detailed above, the present invention provides the following effects.
（１）一般の摺動材には高価な銅系材料が使わｔしてい
るが、本発明では摺動部以外の部分を焼結時に変形の少
ない、しかも安価な鉄系材等にすることによって、コス
トが大幅に低減される。(1) Generally, expensive copper-based materials are used for sliding parts, but in the present invention, parts other than the sliding parts are made of inexpensive iron-based materials that are less deformed during sintering. This significantly reduces costs.
（２）今後、液相焼結技術を用いた高密度、高強度材の
開発が進む中で、液相焼結の最大の欠点である寸法ｔＡ
度の問題を、本発明によって解決できるので、極めて有
益な材料を提供でき、産業の発展に寄与するところ大で
ある。(2) In the future, as the development of high-density, high-strength materials using liquid-phase sintering technology progresses, the dimension tA, which is the biggest drawback of liquid-phase sintering, will
Since this invention can solve the problem of degree of deterioration, it is possible to provide extremely useful materials and greatly contribute to the development of industry.
第１図は本発明の実施例を示す図である。 FIG. 1 is a diagram showing an embodiment of the present invention.
Claims (2)
分のうち、一つの表面層の成分が高密度に焼結する温度
に於ては、他の成分は殆ど収縮または膨張を示さない成
分に調整するようにした組み合わせより成ることを特徴
とする低歪焼結品の製造方法。(1) Consisting of two or more multi-layered dissimilar components, at a temperature at which one surface layer component is sintered to a high density, the other components hardly show any contraction or expansion. 1. A method for manufacturing a low-distortion sintered product, characterized by comprising a combination of components adjusted to have no component.
成分のうち、一つの表面層は焼結により高密度化される
成分より成り、他は前記一つの成分の焼結時に殆ど収縮
または膨張しない成分である組み合わせより成ることを
特徴とする低歪焼結品。(2) Consisting of two or more multi-layered layers of different components, one of the surface layers of the different components is made of a component that is densified by sintering, and the others are mostly composed of a component that is densified by sintering of the one component. A low-distortion sintered product characterized by consisting of a combination of components that do not shrink or expand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63216138A JP2561517B2 (en) | 1988-08-30 | 1988-08-30 | Sintered product manufacturing method and sintered product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63216138A JP2561517B2 (en) | 1988-08-30 | 1988-08-30 | Sintered product manufacturing method and sintered product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0266106A true JPH0266106A (en) | 1990-03-06 |
| JP2561517B2 JP2561517B2 (en) | 1996-12-11 |
Family
ID=16683864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63216138A Expired - Lifetime JP2561517B2 (en) | 1988-08-30 | 1988-08-30 | Sintered product manufacturing method and sintered product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2561517B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014065279A1 (en) * | 2012-10-25 | 2014-05-01 | 千住金属工業株式会社 | Sliding member and production method for same |
| US10309457B2 (en) | 2012-03-27 | 2019-06-04 | Senju Metal Industry Co., Ltd. | Sliding member |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5368605A (en) * | 1976-12-01 | 1978-06-19 | Kentarou Takahashi | Composite molded valve seat |
-
1988
- 1988-08-30 JP JP63216138A patent/JP2561517B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5368605A (en) * | 1976-12-01 | 1978-06-19 | Kentarou Takahashi | Composite molded valve seat |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10309457B2 (en) | 2012-03-27 | 2019-06-04 | Senju Metal Industry Co., Ltd. | Sliding member |
| WO2014065279A1 (en) * | 2012-10-25 | 2014-05-01 | 千住金属工業株式会社 | Sliding member and production method for same |
| US9956613B2 (en) | 2012-10-25 | 2018-05-01 | Senju Metal Industry Co., Ltd. | Sliding member and production method for same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2561517B2 (en) | 1996-12-11 |
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