JPS5852407A - Infiltration method for lead to sintered alloy material - Google Patents
Infiltration method for lead to sintered alloy materialInfo
- Publication number
- JPS5852407A JPS5852407A JP15053481A JP15053481A JPS5852407A JP S5852407 A JPS5852407 A JP S5852407A JP 15053481 A JP15053481 A JP 15053481A JP 15053481 A JP15053481 A JP 15053481A JP S5852407 A JPS5852407 A JP S5852407A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- sintered alloy
- alloy material
- alloy
- flux
- 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
- 239000000956 alloy Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims description 27
- 230000008595 infiltration Effects 0.000 title description 14
- 238000001764 infiltration Methods 0.000 title description 14
- 230000004907 flux Effects 0.000 claims abstract description 22
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 17
- 229910000978 Pb alloy Inorganic materials 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical group [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 235000005074 zinc chloride Nutrition 0.000 description 2
- 239000011592 zinc chloride Substances 0.000 description 2
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 1
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910020174 Pb-In Inorganic materials 0.000 description 1
- 229910020220 Pb—Sn Inorganic materials 0.000 description 1
- 229910020218 Pb—Zn Inorganic materials 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000001119 stannous chloride Substances 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F3/26—Impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は焼結合金材の空孔に鉛を溶浸する方法の改良に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the method of infiltrating lead into the pores of a sintered alloy material.
焼結合金材特に鉄系焼結合金材に鉛を含有させた焼結合
金材は、優，れだ耐摩耗性及び自己潤滑性を有する焼結
合金材として知られているが、鉛の融点が３２８゜Ｃと
鉄系焼結合金の焼結温度より極端に低くしかも鉛は鉄と
合金化せずそのため、ぬれ性が極めて悪いため、鉄系焼
結合金粉と鉛粉の混合圧粉体を焼結すると、初期に鉛が
溶融流動しそのため偏析しやすいと言う欠陥を有してい
た。Sintered alloy materials, especially iron-based sintered alloy materials containing lead, are known as sintered alloy materials that have excellent wear resistance and self-lubricating properties, but the melting point of lead The temperature is 328°C, which is extremely lower than the sintering temperature of iron-based sintered alloy, and lead does not alloy with iron, resulting in extremely poor wettability. When sintered, lead melted and flowed in the initial stage, which caused it to be easily segregated.
従って、この方法に代えて、焼結合金材の空孔に鉛又は
鉛合金を溶浸する手法がとられているが鉛は鉄と合金化
せず、極めてぬれ性が悪いだめに種々の溶浸方法が開発
されている。Therefore, instead of this method, a method has been adopted in which lead or a lead alloy is infiltrated into the pores of the sintered alloy material, but lead does not alloy with iron and has extremely poor wettability, so it Soaking methods have been developed.
しかしながら、近時の高密度焼結合金の微小空孔に充分
溶浸し得る鉛溶浸方法は開発されていないのが実状であ
り、その開発は急務である。ｋ本発明は、上述状況に鑑
み、高密度焼結合金の微小空孔にも充分溶浸可能な鉛溶
浸方法を提供しようとするものであり、第１発明と第２
発明からなる。However, the reality is that a lead infiltration method that can sufficiently infiltrate the micropores of modern high-density sintered alloys has not been developed, and its development is urgently needed. k In view of the above-mentioned situation, the present invention aims to provide a lead infiltration method that can sufficiently infiltrate even the minute pores of a high-density sintered alloy, and the present invention is based on the first and second aspects of the present invention.
Consists of inventions.
第１発明の目的とするところは、近時の高密度 、焼結
合金材の空孔にも充分溶浸可能な溶浸方法を提供しよう
とするものであり、第２発明は、第１発明の効果に加え
、鉛の無駄を防止した溶浸方法を提供しようとするもの
である。The object of the first invention is to provide an infiltration method that can sufficiently infiltrate the pores of recent high-density, sintered alloy materials, and the second invention is directed to the first invention. In addition to the above effects, the present invention aims to provide an infiltration method that prevents waste of lead.
以下、本発明を第１発明から説明する。Hereinafter, the present invention will be explained starting from the first invention.
先ず、公知の方法によって焼結合金材を脱脂、乾燥し、
焼結合金材の表面の汚れをとることが望ましい。First, the sintered alloy material is degreased and dried by a known method.
It is desirable to remove dirt from the surface of the sintered metal material.
このようにした焼結合金材の溶浸個所にフラックス（ｆ
ｌｕｘ）を塗布する。Flux (f
lux).
フラックスが塗布された焼結合金材の表面は、フラック
ス特有の作用によって、焼結合金材表面の酸化被膜が除
去されるとともに、酸化被膜の形成が防止されるだめ表
面は極めて活性化された状態を呈することとなる。The surface of the sintered alloy material coated with flux has an extremely activated state in which the oxidized film on the surface of the sintered alloy material is removed and the formation of an oxidized film is prevented due to the unique action of the flux. will be presented.
この状態を保っている間に公知の溶浸方法（鉛溶湯中に
焼結合金材を浸漬する所謂ドブ漬は法や焼結合金材の表
面に鉛圧粉オ又は溶製材を積載し、水素ガス中で約７５
０℃に加熱する方法など）によって鉛又は鉛合金を溶浸
するものである。While this state is maintained, a well-known infiltration method (the so-called dobbing method, in which the sintered alloy material is immersed in molten lead metal) is used, or the surface of the sintered alloy material is loaded with lead compacted powder or molten material, and then heated with hydrogen. Approximately 75 in gas
In this method, lead or lead alloy is infiltrated by heating to 0°C, etc.).
このように、焼結合金材の表誼はフラックスの作用□に
よって、極めて活性化された状態を呈しているために、
高密度焼結体の微小空孔にも溶浸が可能となるものであ
る。In this way, the surface of the sintered alloy material is in an extremely activated state due to the action of the flux.
This makes it possible to infiltrate even the micropores of a high-density sintered body.
なお、フラックスには多種多様のものが存在するが、焼
結合金材表面の酸化被膜除去を顕著に行なわさせしめる
ためには、無機系塩類フラックス（例えば、塩化亜鉛、
塩化アンモニウム、塩化第一スズなど）が主成分のフラ
ックスを用いることが望ましく効果が大きいものである
。Although there are many types of fluxes, inorganic salt fluxes (e.g. zinc chloride, zinc chloride,
It is desirable to use a flux whose main component is ammonium chloride, stannous chloride, etc., and is highly effective.
以上説明の第１発明に於ては、溶浸は可能になっても溶
浸時の鉛の無駄については従来と変るところがなく、こ
の点改善の余地を残している。In the first invention described above, even if infiltration becomes possible, there is no difference in waste of lead during infiltration compared to the conventional method, and there is still room for improvement in this point.
第２発明にあっては、この点を加養することが課題とな
っている。In the second invention, it is an object to improve this point.
以下第２発明につき詳細に説明すると第２発明について
は先ず、望ましくは公知の手法によって、焼結合金材を
脱脂、乾燥し、焼結合金材の表面の汚れをとる。The second invention will be described in detail below. In the second invention, first, the sintered metal material is degreased and dried, preferably by a known method, to remove dirt from the surface of the sintered metal material.
しかる後、この焼結合金材の溶浸個所に、フラックスと
、鉛粉末及び／又は鉛合金粉末のペースト状溶浸剤を塗
布する。Thereafter, flux and a paste-like infiltrant of lead powder and/or lead alloy powder are applied to the infiltrated area of the sintered alloy material.
このペースト状溶浸剤の塗布された焼結合金材表面はフ
ラックスの作用によって、焼結合金材表面の酸化被膜が
除去されるとともに、酸化被膜の形成が防止されるため
表面は極めて活性化された状態を呈する。The surface of the sintered alloy material coated with this paste-like infiltrant has an extremely activated surface due to the action of the flux, which removes the oxide film on the surface of the sintered alloy material and prevents the formation of an oxide film. exhibit a condition.
この状態が保たれている状態で、Ｈ２等の保護雰囲気中
で加熱し、粉末状の鉛及び／又は鉛合金を溶し、溶浸を
行うものである。このようにフラックスと鉛とのペース
ト状溶浸剤を塗布するものであるため鉛が均一に塗布さ
れるために必要以外の個所に鉛が溶浸や付着することが
なく、鉛の無駄がなくなるものである。While this state is maintained, it is heated in a protective atmosphere such as H2 to melt the powdered lead and/or lead alloy and perform infiltration. As this method applies a paste-like infiltrant of flux and lead, the lead is applied evenly, so lead does not infiltrate or adhere to areas other than where it is needed, and lead is not wasted. It is.
なお、フラックスと鉛粉末及び／又は鉛合金粉末との混
合比率は、フラックスを２５〜３５重量係にすることが
よいことが判明している。It has been found that the mixing ratio of flux and lead powder and/or lead alloy powder is preferably 25 to 35% by weight of flux.
また、第１発明及び第２発明ともに鉛の溶浸に当っては
純鉛よりも鉛合金（例えばＰｂ −Ｓｎ合金、Ｐｂ−Ａ
ｇ合金、Ｐｂ −Ｉｎ合金、Ｐｂ−Ｂ１合金、ｐｂ−Ｃ
ｄ合金、Ｐｂ −Ｚｎ合金、ｐｂ −ｓｂ金合金ど）と
して鉛を溶浸した方がより一層良好に溶浸されるもので
ちゃ。この理由として１は、鉛は鉄と合金を形成しない
が、鉛合金を形成する他の金属（Ｓｎ、Ｚｎなど）が鉄
と合金を形成し、そのため鉛合金全体としてのぬれ性を
向上させるためと考えら第１る。In addition, in both the first and second inventions, when infiltrating lead, lead alloys (e.g., Pb-Sn alloy, Pb-A
g alloy, Pb-In alloy, Pb-B1 alloy, pb-C
d alloy, Pb-Zn alloy, pb-sb gold alloy, etc.), it is better to infiltrate lead. The first reason for this is that lead does not form an alloy with iron, but other metals that form lead alloys (Sn, Zn, etc.) form alloys with iron, which improves the wettability of the lead alloy as a whole. That's the first thing I thought about.
なお、鉛に対する他の元素（Ｓｎなど）の割合は１〜ｌ
Ｏ重量係が良好な結果が得られることが判明したＯ
以下、本発明方法の優秀性を立証するために、従来方法
と本発明方法との比較試験を行った。Note that the ratio of other elements (Sn, etc.) to lead is 1 to 1.
It was found that good results were obtained in terms of weight.Hereinafter, in order to prove the superiority of the method of the present invention, a comparative test was conducted between the conventional method and the method of the present invention.
先ず、鉛溶湯が強く要求されている内燃機関用鉄系焼結
合金製バルブシート素材（外径４０關、内径２８ ｍｍ
、厚さ８．５關、密度６．９９ ＆ ／ｃｒｌ）を５個
作成し、全て、脱脂、乾燥を行った後、表−１に示す如
〈従来方法、第１発明方法、第２発明方法によって溶浸
を行い、密度を測定し溶浸状態の比較を行った。First, molten lead is a material for valve seats made of iron-based sintered alloy for internal combustion engines (40mm outer diameter, 28mm inner diameter).
, thickness 8.5 mm, density 6.99 & /crl), and after degreasing and drying all of them, as shown in Table 1, (conventional method, first invention method, second invention method) Infiltration was performed according to the method, the density was measured, and the infiltration state was compared.
（表−１）
この結果は表−１に示される如〈従来方法よりも本願第
１、第２発明の方が密度が極めて向上しており良好に溶
浸されていることが確認された。(Table 1) The results are shown in Table 1. It was confirmed that the density was significantly improved in the first and second inventions of the present invention compared to the conventional method, and that infiltration was performed better.
このように本発明方法による鉛溶浸方法は°、簡単な方
法によって良好な溶浸を可能にしだものでありその効果
は極めて大きい。As described above, the lead infiltration method according to the present invention enables good infiltration by a simple method, and its effects are extremely large.
特許出願人 日本ピストンリング株式会社patent applicant Nippon Piston Ring Co., Ltd.
Claims (3)
鉛焼結合金材を得る方法に於て、焼結合金材の表面にフ
ラックスを塗布し、しかる後鉛又は鉛合金の溶浸を行う
ことを特徴とする焼結合金材への鉛溶浸方法。(1) In the method of obtaining a lead-containing sintered alloy material by infiltrating lead or a lead alloy into the pores of the sintered alloy material, flux is applied to the surface of the sintered alloy material, and then lead or lead alloy is infiltrated into the pores of the sintered alloy material. A method for infiltrating lead into a sintered alloy material, which is characterized by infiltrating an alloy.
のフラックスとしたことを特徴とする特許許請求の範囲
第１項記載の焼結合金材への鉛溶浸方法。(2) The method for infiltrating lead into a sintered alloy material according to claim 1, wherein the flux is a flux whose main component is an inorganic salt flux.
含鉛焼結合金材を得る方法に於て、鉛粉末及び／又は鉛
合金粉末とフラックスよりなるペースト状溶浸剤を焼結
合金材の表面に塗布し、保護雰囲気中にて加熱し溶浸す
ることを特徴とする焼結合金材への鉛溶浸方法。(3) In the method of obtaining a lead-containing sintered alloy material by infiltrating lead or a lead alloy into the pores of the sintered alloy material, a paste-like infiltrant consisting of lead powder and/or lead alloy powder and flux is used. A method for infiltrating lead into a sintered alloy material, which is characterized by applying lead to the surface of the sintered alloy material and heating and infiltrating it in a protective atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15053481A JPS5852407A (en) | 1981-09-25 | 1981-09-25 | Infiltration method for lead to sintered alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15053481A JPS5852407A (en) | 1981-09-25 | 1981-09-25 | Infiltration method for lead to sintered alloy material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5852407A true JPS5852407A (en) | 1983-03-28 |
Family
ID=15498963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15053481A Pending JPS5852407A (en) | 1981-09-25 | 1981-09-25 | Infiltration method for lead to sintered alloy material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5852407A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49128917A (en) * | 1973-04-11 | 1974-12-10 | ||
| JPS52127414A (en) * | 1976-04-19 | 1977-10-26 | Toyota Motor Corp | Infiltrating method into sintered skeleton |
-
1981
- 1981-09-25 JP JP15053481A patent/JPS5852407A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49128917A (en) * | 1973-04-11 | 1974-12-10 | ||
| JPS52127414A (en) * | 1976-04-19 | 1977-10-26 | Toyota Motor Corp | Infiltrating method into sintered skeleton |
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