JPH03126803A - Treatment of sealing of hole in sintered parts - Google Patents
Treatment of sealing of hole in sintered partsInfo
- Publication number
- JPH03126803A JPH03126803A JP26428789A JP26428789A JPH03126803A JP H03126803 A JPH03126803 A JP H03126803A JP 26428789 A JP26428789 A JP 26428789A JP 26428789 A JP26428789 A JP 26428789A JP H03126803 A JPH03126803 A JP H03126803A
- Authority
- JP
- Japan
- Prior art keywords
- sealing
- sintered parts
- treatment
- resin
- hole
- 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
- 238000007789 sealing Methods 0.000 title claims description 11
- 239000011347 resin Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000005238 degreasing Methods 0.000 description 6
- 238000005470 impregnation Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は自動車のパワーステアリング用油圧ポンプの
ような気密性を必要とする製品を製造するのに使用する
焼結部品の封化処理方法に関するものである。[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a method for sealing sintered parts used in manufacturing products that require airtightness, such as hydraulic pumps for power steering of automobiles. It is something.
〈従来の技術〉
従来、鉄系の焼結部品の封化処理法としては、水蒸気に
よる酸化処理、樹脂による含浸処理等が目的に応じてそ
れぞれ単独に行なわれている。<Prior Art> Conventionally, as a sealing treatment method for iron-based sintered parts, oxidation treatment with steam, impregnation treatment with resin, etc. have been carried out independently depending on the purpose.
〈発明が解決しようとする課題〉
しかしながら、焼結部品に対する封化処理として水蒸気
による酸化処理のみでは十分な気密性を得ることは困難
であり、また樹脂の含浸処理は樹脂含浸前の十分な脱脂
が困難であるばかりでなく、樹脂自体が高価なため、高
コストであるという問題があった。<Problem to be solved by the invention> However, it is difficult to obtain sufficient airtightness only by oxidation treatment using water vapor as a sealing treatment for sintered parts, and resin impregnation treatment requires sufficient degreasing before resin impregnation. Not only is it difficult to use, but the resin itself is expensive, resulting in high costs.
く課題を解決するための手段〉
この発明は上記の問題点を解消するべく検討の結果得ら
れたものであって、焼結部品に対する樹脂含浸処理前に
水蒸気による酸化処理を行ない、樹脂含浸前の脱脂およ
び予備封孔による使用樹脂の節減をはかりながら気密性
にすぐれた焼結部品を得ようとするものである。Means for Solving the Problems> The present invention was obtained as a result of studies to solve the above problems. The aim is to obtain sintered parts with excellent airtightness while reducing the amount of resin used through degreasing and preliminary sealing.
即ち、この発明は焼結部品を水蒸気雰囲気中で４００〜
７００℃に加熱して該焼結部品の表面および内部に酸化
皮膜を形成させ、その後樹脂を含浸し硬化させる焼結部
品の封化処理方法を提供するものである。That is, in this invention, the sintered parts are heated in a steam atmosphere to
The present invention provides a method for sealing a sintered part by heating it to 700°C to form an oxide film on the surface and inside of the sintered part, and then impregnating and hardening the sintered part with a resin.
〈作用〉
この発明においては、焼結部品に対する樹脂含浸処理の
前処理として４００〜７００℃の温度範囲で水蒸気によ
る酸化処理を行うことにより十分な脱脂を行なうことが
できるのである。<Function> In the present invention, sufficient degreasing can be achieved by performing oxidation treatment with steam at a temperature range of 400 to 700° C. as a pretreatment for resin impregnation treatment of the sintered parts.
また、この水蒸気による酸化処理においても、ある程度
の封孔が行なわれることからその後の含浸樹脂量が少な
くてすむという効果を有する。In addition, this oxidation treatment with steam also has the effect that a certain amount of pore sealing is performed, so that the subsequent amount of impregnated resin can be reduced.
尚、水蒸気処理の温度範囲を上記の範囲とするのは、４
００℃以下では脱脂効果および酸化皮膜形成が不十分で
あり、また７００℃以上では酸化皮膜が焼結部品の表面
部に重点的に形成されて、内部空孔の予備封孔という目
的を果し得ないためである。In addition, the temperature range of the steam treatment is set to the above range.
At temperatures below 00°C, the degreasing effect and oxide film formation are insufficient, and at temperatures above 700°C, the oxide film is formed mainly on the surface of the sintered part, which does not serve the purpose of pre-sealing internal pores. This is because you don't get it.
尚、この発明で使用する樹脂としては特に限定はなく、
一般に市販されているもので良い。Note that there are no particular limitations on the resin used in this invention.
Any commercially available material may be used.
〈実施例〉 以下、この発明を実施例により詳細に説明する。<Example> Hereinafter, this invention will be explained in detail with reference to Examples.
主として鉄からなる密度６．５ｇ／ｃｍ”の焼結部品に
対して、５７０℃×２時間の水蒸気による酸化処理を行
なった後、アクリル系熱硬化性樹脂を含浸処理した。A sintered part mainly made of iron and having a density of 6.5 g/cm'' was oxidized with steam at 570° C. for 2 hours, and then impregnated with an acrylic thermosetting resin.
また、比較例（１）として、上記の焼結部品に５７０℃
×２時間の水蒸気による酸化処理および比較例（２）と
してアクリル系熱硬化性樹脂の含浸処理を行なった。In addition, as a comparative example (1), the above sintered parts were heated at 570°C.
An oxidation treatment using steam for 2 hours and an acrylic thermosetting resin impregnation treatment were carried out as Comparative Example (2).
かくして得られた３種の焼結部品について第１図に示す
治具を用いて油圧による気密試験を行なった。なお、第
１図において１：試験片、２：油、３：Ｏリング、４ニ
ブランジヤーである。The three types of sintered parts thus obtained were subjected to a hydraulic airtightness test using the jig shown in FIG. In addition, in FIG. 1, 1: test piece, 2: oil, 3: O-ring, and 4 nib run gear.
その結果、比較例（１）のものは油圧４００ｋｇｆ／ｃ
ｍ”の気密性しか得られず、また比較例Ｃ）のものは油
圧５１０ｋｇｆ／ｃ−の気密性を得ることはできたが、
前処理として１２時間もの有機溶剤による脱脂が必要で
あった。As a result, the comparative example (1) had a hydraulic pressure of 400 kgf/c.
Comparative example C) was able to obtain an airtightness of only 510 kgf/c- of oil pressure.
As a pretreatment, degreasing with an organic solvent for as long as 12 hours was required.
これに対して、この発明の実施例によるものは油圧５１
０ｋｇｆ／ｃｍ”の気密性を得ると共に比較例（２）に
おける使用樹脂量の約７０％の節減をはかることができ
た。In contrast, the hydraulic pressure 51 according to the embodiment of the present invention is
It was possible to obtain an airtightness of 0 kgf/cm'' and to reduce the amount of resin used by about 70% compared to Comparative Example (2).
〈発明の効果〉
以上説明したように、樹脂含浸処理の前処理として水蒸
気による酸化処理を行なうこの発明の封化処理方法によ
れば、脱脂時間をおよそｌ／１０に短縮できるうえに７
０％程度もの樹脂を節減できるのであり、特に大型の鉄
系焼結部品に利用すると大きな効果が得られるのである
。<Effects of the Invention> As explained above, according to the sealing treatment method of the present invention in which oxidation treatment with water vapor is performed as a pretreatment for resin impregnation treatment, the degreasing time can be shortened to about 1/10, and
The resin can be saved by about 0%, and a great effect can be obtained especially when used for large-sized iron-based sintered parts.
図面はこの発明において気密試験に用いる治具の説明図
である。
１・・・試験片 ２・・・油 ３・・・Ｏリ
ング４・・・プランジャーThe drawing is an explanatory diagram of a jig used for an airtight test in the present invention. 1... Test piece 2... Oil 3... O-ring 4... Plunger
Claims (1)
囲気中で４００〜７００℃に加熱して該焼結部品の表面
および内部に酸化皮膜を形成させ、その後樹脂を含浸硬
化させることを特徴とする焼結部品の封孔処理方法。In the sealing treatment of iron-based sintered parts, the sintered parts are heated to 400 to 700°C in a steam atmosphere to form an oxide film on the surface and inside of the sintered parts, and then resin is impregnated and hardened. Features a method for sealing sintered parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26428789A JPH03126803A (en) | 1989-10-11 | 1989-10-11 | Treatment of sealing of hole in sintered parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26428789A JPH03126803A (en) | 1989-10-11 | 1989-10-11 | Treatment of sealing of hole in sintered parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03126803A true JPH03126803A (en) | 1991-05-30 |
Family
ID=17401070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26428789A Pending JPH03126803A (en) | 1989-10-11 | 1989-10-11 | Treatment of sealing of hole in sintered parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03126803A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009074114A (en) * | 2007-09-19 | 2009-04-09 | Hitachi Powdered Metals Co Ltd | Iron-based sintered material superior in corrosion resistance, fixing case for cylinder lock device made from the material, and method for manufacturing them |
| JP2021066945A (en) * | 2019-10-28 | 2021-04-30 | 株式会社クボタ | Engine exterior part, and manufacturing method thereof |
| CN112792336A (en) * | 2020-12-29 | 2021-05-14 | 广东东睦新材料有限公司 | Valve plate machining process |
| CN115127008A (en) * | 2021-04-27 | 2022-09-30 | 帝伯爱尔株式会社 | Sintered alloy valve guide tube and method for manufacturing sintered alloy valve guide tube |
-
1989
- 1989-10-11 JP JP26428789A patent/JPH03126803A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009074114A (en) * | 2007-09-19 | 2009-04-09 | Hitachi Powdered Metals Co Ltd | Iron-based sintered material superior in corrosion resistance, fixing case for cylinder lock device made from the material, and method for manufacturing them |
| JP2021066945A (en) * | 2019-10-28 | 2021-04-30 | 株式会社クボタ | Engine exterior part, and manufacturing method thereof |
| CN112792336A (en) * | 2020-12-29 | 2021-05-14 | 广东东睦新材料有限公司 | Valve plate machining process |
| CN115127008A (en) * | 2021-04-27 | 2022-09-30 | 帝伯爱尔株式会社 | Sintered alloy valve guide tube and method for manufacturing sintered alloy valve guide tube |
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