JPS61113701A - Production of ferrous sintered parts - Google Patents
Production of ferrous sintered partsInfo
- Publication number
- JPS61113701A JPS61113701A JP59234039A JP23403984A JPS61113701A JP S61113701 A JPS61113701 A JP S61113701A JP 59234039 A JP59234039 A JP 59234039A JP 23403984 A JP23403984 A JP 23403984A JP S61113701 A JPS61113701 A JP S61113701A
- Authority
- JP
- Japan
- Prior art keywords
- parts
- sintered parts
- corrosion resistance
- sintered
- resin
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title abstract description 3
- 238000007747 plating Methods 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 13
- 239000000956 alloy Substances 0.000 claims abstract description 13
- 229910003271 Ni-Fe Inorganic materials 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 19
- 238000005470 impregnation Methods 0.000 claims description 10
- 239000000314 lubricant Substances 0.000 claims description 7
- 238000005245 sintering Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 abstract description 16
- 230000007797 corrosion Effects 0.000 abstract description 16
- 239000002994 raw material Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract 2
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 238000004381 surface treatment Methods 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〕
本発明は、鉄系焼結部品の製造方法に関し、特に、耐食
性に優れかつ寸法精度の高い鉄系焼結部品の製造方法に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing iron-based sintered parts, and particularly relates to a manufacturing method for iron-based sintered parts with excellent corrosion resistance and high dimensional accuracy. .
鉄系焼結部品は寸法が正確であることや多量生産に好適
である等の種々の利点を有するため各方面の技術分野で
多用されている。例えば、電子装置分野においては、磁
気ディスク装置の部品を始めとして種々の部品に鉄系焼
結部品が用いられているが、これらの焼結部品は、特に
耐食性に優れしかも寸法精度の高いものであることが要
求される場合が多い。Iron-based sintered parts have various advantages such as accurate dimensions and suitability for mass production, and are therefore widely used in various technical fields. For example, in the field of electronic equipment, iron-based sintered parts are used for various parts, including parts for magnetic disk drives, but these sintered parts have particularly excellent corrosion resistance and high dimensional accuracy. Certain things are often required.
従来のこの種の鉄系焼結部品は純鉄又は２種以上の合金
成分を５％以下含む合金粉末を用いて、少なくとも次の
工程、すなわち、
（イ）潤滑材混合工程と、
（ロ）粉末成形工程と、
（ハ）焼結工程と、
（ニ）樹脂含浸処理工程と、
（ホ）めっき処理工程と、
を経由して製造されていた。Conventional iron-based sintered parts of this type use pure iron or alloy powder containing 5% or less of two or more alloy components and undergo at least the following steps: (a) lubricant mixing step; and (b) It was manufactured through a powder molding process, (c) a sintering process, (d) a resin impregnation process, and (e) a plating process.
焼結部品は、よく知られているように多孔質のものであ
るため、高度の耐食性を得るためには、これらの空孔を
樹脂含浸処理により封孔し、その後さび止め用として表
面処理（めっき処理）を行う必要がある。しかし、樹脂
は、微小な空孔内ま゛で完全に含浸できず、かつ空孔に
含浸した後、硬化する際に収縮する性質を有すること、
また、めっき処理前に焼結部品の表面に付着した樹脂を
除去するための除去処理時に、すてに空孔に含浸してい
る樹脂の一部が除去されてしまうこと、等の理由により
、樹脂含浸処理を行っても、完全な封孔効果が得られな
いのが現状である。このため、めっき処理後の耐食性が
不充分であった。As is well known, sintered parts are porous, so in order to obtain a high degree of corrosion resistance, these pores are sealed by resin impregnation treatment, and then surface treatment ( plating treatment). However, resin cannot be completely impregnated into minute pores and has the property of shrinking when hardened after being impregnated into the pores.
In addition, during the removal process to remove the resin attached to the surface of the sintered part before the plating process, some of the resin that has already impregnated the pores is removed. At present, even if resin impregnation treatment is performed, a complete sealing effect cannot be obtained. For this reason, the corrosion resistance after plating was insufficient.
上記製造方法にあっては、鉄系焼結部品の耐食性を高め
るための対策として、めっき層の厚さを通常の厚さく例
えば、Ｎｉめっきで５μｍ程度の厚さ）よりも充分厚く
形成する必要があり（例えば、Ｎｉめっきで２０ｕｍ程
度の厚さ）、この結果、めっき処理費の高額化を招くと
いう問題や、めっき層が厚いためその厚さ寸法の管理が
非常に困難となり、このため部品の寸法精度を高度にか
つ均一に維持することが困難であるという問題がある。In the above manufacturing method, as a measure to increase the corrosion resistance of iron-based sintered parts, it is necessary to form the plating layer sufficiently thicker than the normal thickness (for example, about 5 μm thick for Ni plating). (For example, the thickness of Ni plating is about 20 um).As a result, there is the problem of high plating processing costs, and the thick plating layer makes it extremely difficult to control its thickness, which makes parts There is a problem in that it is difficult to maintain high and uniform dimensional accuracy.
本発明はこのような問題を解消することを目的として案
出されたものである。The present invention was devised for the purpose of solving such problems.
本発明は上記問題点を解消した耐食性に優れかつ寸法精
度の高い鉄系焼結部品の製造方法を提供するもので、そ
の手段として、本発明に依れば、鉄系合金粉末を用いて
、少なくとも潤滑材混合工程と、圧粉成形工程と、焼結
工程と、樹脂含浸処理工程と、めっき処理工程とを経由
して成る鉄系焼結部品の製造方法において、上記鉄系合
金粉末としてＮｉ含有量が３０〜５５％のＮｉ−Ｆｅ系
合金粉末を用いた鉄系焼結部品の製造方法が提供される
。The present invention provides a method for manufacturing iron-based sintered parts with excellent corrosion resistance and high dimensional accuracy, which solves the above-mentioned problems. In the method for manufacturing iron-based sintered parts, which comprises at least a lubricant mixing step, a powder compacting step, a sintering step, a resin impregnation step, and a plating step, Ni is used as the iron-based alloy powder. A method of manufacturing a ferrous sintered part using Ni-Fe alloy powder having a content of 30 to 55% is provided.
上記製造方法は、原材料の鉄系合金粉末として、Ｎｉ含
有量が３０〜５５％のＮｉ−Ｆｅ系合金粉末を用いるこ
とにより、鉄系焼結部品の素材自体の耐食性を高めるこ
とができ、このため樹脂含浸処理によって現状では完全
な封孔効果が得られなくとも、通常のめっき層の厚さく
例えば、Ｎｉめっきで５μｍ程度の厚さ）で鉄系焼結部
品の耐食性をえオ６ｏうあ、。よ７．７ｏよオ９、あ７
゜。７ ）・さ寸法の管理を大幅に簡易化させるこ
とができる。In the above manufacturing method, by using Ni-Fe alloy powder with a Ni content of 30 to 55% as the raw material iron alloy powder, the corrosion resistance of the material itself of the iron-based sintered parts can be improved. Therefore, even if a complete pore sealing effect cannot currently be obtained by resin impregnation treatment, the corrosion resistance of iron-based sintered parts can be improved by using a normal plating layer thickness (for example, Ni plating with a thickness of about 5 μm). ,. Yo7.7oyoo9,a7
゜. 7) - Management of dimensions can be greatly simplified.
以下、本発明の実施例を図面に基づいて詳細に説明する
。Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の詳細な説明するためのブロック図であ
る。FIG. 1 is a block diagram for explaining the present invention in detail.
本実施例は次の如〈実施される。・先づ符号１１で示す
ように、原材料としてＮｉ含有量が３０〜５５％のＮｉ
−Ｆｅ系合金粉末を準備する。“市販されているこのよ
うな原材料としては、Ｎｉ含有量が３６％であるインバ
ーと呼ばれているものや、Ｎｉ含有量が５０％である５
０パーマロイと呼ばれているものがある。次に、符号１
２で示す潤滑材混合工程において、原材料に潤滑材が混
合される。This embodiment is implemented as follows.・As shown by numeral 11, Ni with a Ni content of 30 to 55% is used as a raw material.
- Prepare Fe-based alloy powder. “Such commercially available raw materials include one called Invar, which has a Ni content of 36%, and 5, which has a Ni content of 50%.
There is something called 0 permalloy. Next, code 1
In the lubricant mixing step shown in 2, a lubricant is mixed with the raw material.
この潤滑材は成形金型の加圧動作を円滑化せしめる役割
を果たすものである。次に、符号１３で示す圧粉成形工
程において、成形金型により所望形状の圧粉成形体が成
形される。次に、符号１４で示す焼結工程において、上
記圧粉成形成体が加熱炉内で焼結されて焼結部品に形成
される。尚、この焼結工程後、実際上はサイジング工程
（再圧縮工程、つまり寸法矯正）や焼鈍工程などが必要
に応じて組込まれる。次に符号１５で示す樹脂含浸処理
工程において、焼結部品内部に樹脂を含浸させて封孔を
行う。尚、この樹脂含浸処理工程後、実際上はバレル処
理や機械加工処理などが必要に応じて組込まれ、焼結部
品の表面に付着している樹脂の除去や、樹脂が含浸され
なかった表面の空孔の充填補完などが施される。次に、
符号１６で示すめっき処理工程において焼結部品の表面
にめっき処理が施される。この場合のめっき層は、通常
の厚さ、例えば、Ｎｉめっきの場合で５μｍ程度の厚さ
に形成される。このように、本実施例は、上記の如き原
材料を用いて、主として以上のような工程を経由して耐
食性に優れた鉄形焼結部品を製造する方法である。This lubricant plays the role of smoothing the pressurizing operation of the molding die. Next, in a powder compacting step indicated by reference numeral 13, a powder compact having a desired shape is formed using a molding die. Next, in a sintering step indicated by reference numeral 14, the compacted compact is sintered in a heating furnace to form a sintered part. Incidentally, after this sintering step, in practice, a sizing step (recompression step, that is, dimensional correction), an annealing step, etc. are incorporated as necessary. Next, in a resin impregnation treatment step indicated by reference numeral 15, the inside of the sintered component is impregnated with resin to seal the pores. In addition, after this resin impregnation treatment process, in practice, barrel treatment and machining treatment are incorporated as necessary to remove the resin attached to the surface of the sintered part and to clean the surface that has not been impregnated with resin. Hole filling and supplementation is performed. next,
In a plating process indicated by reference numeral 16, the surface of the sintered component is plated. The plating layer in this case is formed to have a normal thickness, for example, about 5 μm in the case of Ni plating. In this way, the present example is a method for manufacturing iron-shaped sintered parts with excellent corrosion resistance using the above-mentioned raw materials and mainly through the above-mentioned steps.
以上説明したように、本発明によれば、原材料の鉄形合
金粉末として、Ｎｉ含有量が３０〜５５％のＮｉ−Ｆｅ
形金合金粉末用いることにより、鉄系焼結部品の素材自
体の耐食性を大幅に高めることができ、このため樹脂含
浸処理によって現状では完全な封孔効果が得られなくと
も、通常のめっき層の厚さく例えば、Ｎｉめっき場合で
５μｍ程度の厚さ）で鉄系焼結部品の耐食性を充分に高
めることができ、かつ、めっき層の厚さ寸法の管理を大
幅に簡易化させることができるという著しい効果が得ら
れ、焼結部品のめっき処理費の低減化、及び寸法精度を
高度にかつ均一に維持することができる。例えば、本発
明によれば、Ｎｉめっき層の厚さが５μｍ程度の場合で
、前述した従来例のＮｉめっき層の厚さが２０μｍ程度
の場合と比較して、少なくとも同等もしくはそれ以上の
耐食性を得ることができる。As explained above, according to the present invention, Ni-Fe with a Ni content of 30 to 55% is used as the raw material iron alloy powder.
By using shape metal alloy powder, the corrosion resistance of the material itself for iron-based sintered parts can be greatly increased. Therefore, even if a complete pore sealing effect cannot currently be obtained by resin impregnation treatment, it is possible to significantly improve the corrosion resistance of the material itself for iron-based sintered parts. It is said that the corrosion resistance of iron-based sintered parts can be sufficiently increased with a thickness of about 5 μm (for example, in the case of Ni plating), and that the management of the thickness of the plating layer can be greatly simplified. A remarkable effect can be obtained, and the plating processing cost of sintered parts can be reduced, and dimensional accuracy can be maintained highly and uniformly. For example, according to the present invention, when the thickness of the Ni plating layer is about 5 μm, the corrosion resistance is at least equal to or higher than that of the conventional example described above when the thickness of the Ni plating layer is about 20 μm. Obtainable.
第１図は本発明の詳細な説明するためのブロック図であ
る。
１１・・・原材料（Ｎｉ含有量が３０〜５５％のＮ ｉ
−Ｆｅ系合金粉末）、
１２・・・潤滑材混合工程、
１３・・・圧粉成形工程、
１４・・・焼結工程、
１５・・・樹脂含浸処理工程、
１６・・・めっき処理工程。FIG. 1 is a block diagram for explaining the present invention in detail. 11... Raw materials (Ni with a Ni content of 30 to 55%)
-Fe-based alloy powder), 12...Lubricant mixing process, 13...Powder compacting process, 14...Sintering process, 15...Resin impregnation process, 16...Plating process.
Claims (1)
と、圧粉成形工程と、焼結工程と、樹脂含浸処理工程と
、めっき処理工程とを経由して成る鉄系焼結部品の製造
方法において、上記鉄系合金粉末としてＮｉ含有量が３
０〜５５％のＮｉ−Ｆｅ系合金粉末を用いたことを特徴
とする鉄系焼結部品の製造方法。1. Manufacture of iron-based sintered parts using iron-based alloy powder through at least a lubricant mixing process, a powder compacting process, a sintering process, a resin impregnation process, and a plating process. In the method, the iron-based alloy powder has a Ni content of 3
A method for manufacturing iron-based sintered parts, characterized in that 0 to 55% Ni-Fe-based alloy powder is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59234039A JPS61113701A (en) | 1984-11-08 | 1984-11-08 | Production of ferrous sintered parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59234039A JPS61113701A (en) | 1984-11-08 | 1984-11-08 | Production of ferrous sintered parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61113701A true JPS61113701A (en) | 1986-05-31 |
Family
ID=16964606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59234039A Pending JPS61113701A (en) | 1984-11-08 | 1984-11-08 | Production of ferrous sintered parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61113701A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032070A (en) * | 1973-07-24 | 1975-03-28 | ||
| JPS5536060A (en) * | 1978-09-08 | 1980-03-13 | Nippon Steel Corp | Manufacture of hard long size chain |
| JPS564141A (en) * | 1979-06-22 | 1981-01-17 | Fuji Photo Film Co Ltd | Gelatin hardning method |
| JPS57101648A (en) * | 1980-12-17 | 1982-06-24 | Daido Steel Co Ltd | Alloy powder |
| JPS5811482A (en) * | 1981-07-13 | 1983-01-22 | 三菱電機株式会社 | Controller for elevator |
| JPS5854185A (en) * | 1981-09-28 | 1983-03-31 | 株式会社ナブコ | Method and apparatus for controlling opening and closing of automatic door |
-
1984
- 1984-11-08 JP JP59234039A patent/JPS61113701A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032070A (en) * | 1973-07-24 | 1975-03-28 | ||
| JPS5536060A (en) * | 1978-09-08 | 1980-03-13 | Nippon Steel Corp | Manufacture of hard long size chain |
| JPS564141A (en) * | 1979-06-22 | 1981-01-17 | Fuji Photo Film Co Ltd | Gelatin hardning method |
| JPS57101648A (en) * | 1980-12-17 | 1982-06-24 | Daido Steel Co Ltd | Alloy powder |
| JPS5811482A (en) * | 1981-07-13 | 1983-01-22 | 三菱電機株式会社 | Controller for elevator |
| JPS5854185A (en) * | 1981-09-28 | 1983-03-31 | 株式会社ナブコ | Method and apparatus for controlling opening and closing of automatic door |
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