JPS6033343A - Wear resistance sintered alloy - Google Patents
Wear resistance sintered alloyInfo
- Publication number
- JPS6033343A JPS6033343A JP14096383A JP14096383A JPS6033343A JP S6033343 A JPS6033343 A JP S6033343A JP 14096383 A JP14096383 A JP 14096383A JP 14096383 A JP14096383 A JP 14096383A JP S6033343 A JPS6033343 A JP S6033343A
- Authority
- JP
- Japan
- Prior art keywords
- sintered alloy
- wear resistance
- steadite
- wear
- processability
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
- C22C33/0271—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5% with only C, Mn, Si, P, S, As as alloying elements, e.g. carbon steel
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は内燃機関用摺動部材として使用ｙれる耐摩耗性
焼結合金に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a wear-resistant sintered alloy used as a sliding member for an internal combustion engine.
〈従来技術〉
近時、内燃機関用の諸部材は高負荷運転に酎えることが
要求され、特にカムシャフト、ロッカアーム等の摺動部
材は高面圧に対する耐久性が要求されるようになった。<Prior art> In recent years, various parts for internal combustion engines have been required to withstand high-load operation, and in particular, sliding members such as camshafts and rocker arms are required to have durability against high surface pressure. .
この要求を満たすと共に、加工費と材料費の節減と軽量
化を図るため、摺動部材に合金粉末の焼結材料を使用す
ることが試みられてきた。In order to meet this demand, reduce processing costs and material costs, and reduce weight, attempts have been made to use sintered alloy powder materials for sliding members.
〈発明の目的〉
本発明は上記要求に応え得る内燃機関用摺動部材の材料
として、高い耐摩耗性と優れた加工性を有する焼結合金
を提供することを目的とするものである。<Object of the Invention> An object of the present invention is to provide a sintered alloy having high wear resistance and excellent workability as a material for a sliding member for an internal combustion engine that can meet the above requirements.
〈発明の構成〉
前記目的を達成するため本発明の耐摩耗性焼結合金は、
重量比でＣ１，５〜２．５％、Ｓｉ０．５〜３゜０％、
Ｐｏ、２〜０．Ｅｉ％、残部Ｆｅを含み、液相において
焼結されるものであるが、上記の元素以外に、重量比で
１．０％以下のＭｎと１．０〜Ｉｉ、ｏ％のＣｕのいず
れかを含むものでもよく、あるいはＭｏ、Ｎ、ｉ、Ｃｒ
のうち一種類以上を重量比で２．０％含むものでもよい
。<Configuration of the Invention> In order to achieve the above object, the wear-resistant sintered alloy of the present invention has the following features:
Weight ratio: C1.5~2.5%, Si0.5~3゜0%,
Po, 2-0. Ei%, balance Fe, and is sintered in the liquid phase, but in addition to the above elements, either Mn of 1.0% or less and Cu of 1.0 to Ii, o% by weight ratio or Mo, N, i, Cr
It may contain 2.0% by weight of one or more of these.
ここで、Ｃを １．５〜２．５％とした理由は、Ｃが２
．５％を越えると、遊離黒鉛が多量に生じて割れが発生
しやすくなり、又、硬度が非常に高いセメンタイトとＦ
ｅ−Ｃ−Ｐの共晶であるステダイトが過多に生じて被削
性が悪くなるからである。逆に、Ｃが１．５％未満では
、セメンタイト、ステダイトの析出量が少なくなり、１
ｗ摩耗性を高めることができない。ステダイトは凝固点
が９５０ ’０前後と低く液相焼結を促進させるが、そ
のステダイトが少ないと液相が生じ難くなる。したがっ
て、Ｃの組成範囲を１．５〜２．５％に限定すれば、セ
メンタイトとステダイトの析出による高い耐摩耗性が得
られると共に、ステダイトによる液相焼結も促進される
。Here, the reason for setting C to 1.5 to 2.5% is that C is 2
．． If it exceeds 5%, a large amount of free graphite will be generated and cracks will easily occur, and cementite and F, which have extremely high hardness, will
This is because too much steadite, which is the eutectic of e-C-P, is produced, resulting in poor machinability. Conversely, when C is less than 1.5%, the amount of cementite and steadite precipitated decreases, and 1.
w It is not possible to increase wear resistance. Steadite has a low freezing point of around 950'0 and promotes liquid phase sintering, but if there is less steadite, it becomes difficult to form a liquid phase. Therefore, if the composition range of C is limited to 1.5 to 2.5%, high wear resistance due to the precipitation of cementite and steadite can be obtained, and liquid phase sintering due to steadite is also promoted.
本発明の合金は液相焼結を特徴とする。本発明の合金が
カムシャフト、ロッカアーム等の摺動部として母材に部
分的に組付けられて使用されるとき、その特徴は効果を
奏する。すなわち、粉末焼結合金の液相焼結時の収縮を
利用すれば、合金と母材の強固な固着が得られる。例え
ば、シャフトを鋼管とし、そのシャフトに焼結合金製の
カムロブで組付ける構造のカムシャフトの場合、カムロ
ブは高密度になると共にカムシャフトと強固に結合する
。The alloy of the invention is characterized by liquid phase sintering. When the alloy of the present invention is used as a sliding part of a camshaft, rocker arm, etc. by being partially assembled to a base material, its characteristics are effective. That is, by utilizing the contraction of the powder sintered alloy during liquid phase sintering, strong adhesion between the alloy and the base material can be obtained. For example, in the case of a camshaft having a structure in which the shaft is made of a steel tube and a cam lobe made of a sintered alloy is attached to the shaft, the cam lobe has a high density and is firmly connected to the camshaft.
Ｓｌを ０．５〜３．０％とする理由は、Ｓｉが３．０
％を越えると、基地が脆化する外、粉末の圧粉成形性が
低下し、焼結時の変形が大きくなることと、ＳｌはＣ，
Ｐの量を低い範囲に限定した上で！夜相の発生を促進さ
せる成分となるが、 ０．５％未満ではこの効果は得ら
れないことによる。The reason for setting Sl to 0.5 to 3.0% is that Si is 3.0%.
%, the matrix becomes brittle, the compactability of the powder decreases, deformation during sintering becomes large, and Sl is C,
After limiting the amount of P to a low range! It is a component that promotes the occurrence of the night phase, but this effect cannot be obtained if it is less than 0.5%.
Ｐを０．２〜ｏ、ｅ％とする理由は、Ｐが０．６％を越
えると、析出するステダイト量が過多となり、被削性が
悪くなり、又、脆化も進むが、逆に、 ０．２′Ａ未満
では、ステダイト量が過小となって液相が生じ難く、母
材との結合性も低下することによる。The reason for setting P to 0.2 to o, e% is that if P exceeds 0.6%, the amount of precipitated steadite will be excessive, machinability will deteriorate, and embrittlement will also progress; If it is less than 0.2'A, the amount of steadite becomes too small, making it difficult to form a liquid phase, and the bondability with the base material also decreases.
Ｍｎを１．０％以下とする理由は、Ｍｎが強さを増大さ
せる成分であることによるが、 １．０％を越えると、
焼結の進行が抑制されて粗大な空孔が残り、又、圧粉成
形性も低下させるから、 １．０％以下に限定する。The reason for setting Mn to 1.0% or less is that Mn is a component that increases strength, but if it exceeds 1.0%,
The content is limited to 1.0% or less because it inhibits the progress of sintering, leaving coarse pores and also reduces compaction properties.
Ｃｕを含める理由は、Ｃｕが基地強度と引っ張り強さを
増大させることによるが、Ｃｕが４．０％を越えると焼
結時に１膨張が起きて収縮が進まない傾向が生じる。し
かし、 １．０％未満では基地強度と引っ張り強さを増
す効果は得られないので、添加する組成範囲は１．０〜
４．０％に限定する。The reason for including Cu is that Cu increases base strength and tensile strength, but if Cu exceeds 4.0%, one expansion occurs during sintering and shrinkage tends not to proceed. However, if it is less than 1.0%, the effect of increasing base strength and tensile strength cannot be obtained, so the composition range of addition is from 1.0 to
Limited to 4.0%.
Ｍｏ 、Ｎｉ 、Ｃｒを添加する理由は、これらが基地
強化元素であることによるが、２．０％を越えると、炭
化物の析出、基地のマルテンサイト化、ベイナイト化が
進み、被削性が低下するので、添加は２．０％以下に限
定する。The reason for adding Mo, Ni, and Cr is that these are elements that strengthen the matrix, but if the content exceeds 2.0%, precipitation of carbides, martensite formation, and bainitic formation of the base progress, resulting in decreased machinability. Therefore, the addition is limited to 2.0% or less.
〈実施例〉
ベース鉄粉にＣ，Ｃｕ等の元素を添加し、ステアリン酸
亜鉛を加えて混合した。粉末混合目標の成分（重量％で
）は次の通りである。<Example> Elements such as C and Cu were added to base iron powder, and zinc stearate was added and mixed. The powder mix target ingredients (in weight percent) are as follows:
Ｃ１，８％
Ｓｉ １．２ ％
Ｐ Ｏ，４０％
Ｍｎ ０．３０％
Ｃｕ ２ 、Ｏ％
Ｆｅ 残り
ついで、４〜６ ｔ ／ ｃ ｍ’のプレス面圧でプレ
ス成形後、アンモニア分解カスふんい気の炉に入れ、１
０５０〜１２００℃（平均１１２０℃）の温度で焼結し
て耐摩耗性焼結合金を得た。C1.8% Si 1.2% P O, 40% Mn 0.30% Cu 2 , O% Fe After press forming with a press surface pressure of 4 to 6 t/cm', remove the ammonia decomposition residue. Put it in the furnace of air, 1
A wear-resistant sintered alloy was obtained by sintering at a temperature of 050 to 1200°C (average 1120°C).
得られた合金は、第１図顕微鏡写真に示すように、黒く
見えるパーライトの基地組織Ａに白く見える炭化物Ｂ（
セメンタイＩ・とステダイト）が網状に分布する組織を
有し、その硬度はＨＲＢＩＯ４，３で密度は６．７９ｇ
／ｃｒｎ’であるから、高硬度で高密度の耐摩耗性に優
れた合金である。As shown in the micrograph in Figure 1, the obtained alloy has a black pearlite base structure A and a white carbide B (
It has a structure in which cementite I and steadite are distributed in a network, its hardness is HRBIO4.3 and the density is 6.79g.
/crn', it is an alloy with high hardness, high density, and excellent wear resistance.
〈発明の効果〉
−に記の通り、本発明の鉄系焼結合金は液相焼結により
セメンタイトとステダイトが基地中で網状に分４ｊする
組織となるから、高い耐摩耗性を有し、圧粉成型されて
液相焼結により母材に強固に結合するから加工性にも優
れている。<Effects of the Invention> As described in -, the iron-based sintered alloy of the present invention has a structure in which cementite and steadite are divided into a network in the matrix by liquid phase sintering, so it has high wear resistance. It has excellent workability because it is compacted and firmly bonded to the base material by liquid phase sintering.
第１図は本発明の一実施例の合金の顕微鏡写真（倍率２
００倍、ナイタル液腐食）であり、Ａが基地、Ｂは炭化
物を示す。
出願人 日本ピストンリング株式会社
第１図Figure 1 is a microscopic photograph (magnification: 2) of an alloy according to an embodiment of the present invention.
00 times, nital liquid corrosion), where A represents the base and B represents the carbide. Applicant Nippon Piston Ring Co., Ltd. Figure 1
Claims (1)
３．０％、Ｐ、０．２〜０．８％、残部Ｆｅを含み液相
において焼結されることを特徴とする耐摩耗性焼結合金
。 ２）重量比で １．０％以下のＭｎを含むことを特徴と
する特許請求の範囲第１項記載の耐摩耗性焼結合金。 ３）重量比でＣｕ１．０〜４．０％を含むことを特徴と
する特許請求の範囲第１項又は第２項記載の耐摩耗性焼
結合金。 ４）Ｍｏ 、Ｎｉ 、Ｃｒのうちの少なくとも−っを重
量比で２．０％以下含むことを特徴とする特許請求の範
囲第１項記載の耐摩耗性焼結合金。[Claims] 1) Weight ratio -cC1.5 to 2.5%, S i 0.5 to
A wear-resistant sintered alloy containing 3.0% P, 0.2 to 0.8% Fe, and the balance being sintered in a liquid phase. 2) The wear-resistant sintered alloy according to claim 1, which contains Mn in a weight ratio of 1.0% or less. 3) The wear-resistant sintered alloy according to claim 1 or 2, which contains Cu in a weight ratio of 1.0 to 4.0%. 4) The wear-resistant sintered alloy according to claim 1, which contains at least 2.0% by weight of at least - of Mo, Ni, and Cr.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14096383A JPS6033343A (en) | 1983-08-03 | 1983-08-03 | Wear resistance sintered alloy |
| GB08506986A GB2155037B (en) | 1983-08-03 | 1984-03-23 | Iron-base abrasion-resistant sintered alloy |
| PCT/JP1984/000122 WO1985000835A1 (en) | 1983-08-03 | 1984-03-23 | Iron-base abrasion-resistant sintered alloy |
| DE19843490361 DE3490361T1 (en) | 1983-08-03 | 1984-03-23 | Wear-resistant sintered iron-based alloy |
| DE3490361A DE3490361C2 (en) | 1983-08-03 | 1984-03-23 | Use of a wear-resistant sintered alloy based on iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14096383A JPS6033343A (en) | 1983-08-03 | 1983-08-03 | Wear resistance sintered alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6033343A true JPS6033343A (en) | 1985-02-20 |
| JPH0379428B2 JPH0379428B2 (en) | 1991-12-18 |
Family
ID=15280887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14096383A Granted JPS6033343A (en) | 1983-08-03 | 1983-08-03 | Wear resistance sintered alloy |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS6033343A (en) |
| DE (2) | DE3490361T1 (en) |
| GB (1) | GB2155037B (en) |
| WO (1) | WO1985000835A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61291950A (en) * | 1985-06-17 | 1986-12-22 | Nippon Piston Ring Co Ltd | Wear resistance sintered alloy |
| JPS62120465A (en) * | 1985-11-20 | 1987-06-01 | Hitachi Metals Ltd | Wear resistant iron-base sintered sliding material |
| JPS62271914A (en) * | 1986-04-11 | 1987-11-26 | Nippon Piston Ring Co Ltd | Sintered cam shaft |
| JPH01100575U (en) * | 1987-12-23 | 1989-07-06 | ||
| TWI426186B (en) * | 2011-12-20 | 2014-02-11 | Metal Ind Res & Dev Ct | Low thermal expansion screw |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62271913A (en) * | 1986-04-11 | 1987-11-26 | Nippon Piston Ring Co Ltd | Builtup cam shaft |
| US6358298B1 (en) | 1999-07-30 | 2002-03-19 | Quebec Metal Powders Limited | Iron-graphite composite powders and sintered articles produced therefrom |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5638672B2 (en) * | 1973-06-11 | 1981-09-08 | ||
| GB1576143A (en) * | 1977-07-20 | 1980-10-01 | Brico Eng | Sintered metal articles |
| JPS6023188B2 (en) * | 1978-09-07 | 1985-06-06 | 住友電気工業株式会社 | Sintered steel and its manufacturing method |
| JPS55145151A (en) * | 1979-04-26 | 1980-11-12 | Nippon Piston Ring Co Ltd | Wear resistant sintered alloy material for internal combustion engine |
| JPS5983704A (en) * | 1982-11-01 | 1984-05-15 | Mazda Motor Corp | Alloy powder sheet and use thereof |
| DE3346089A1 (en) * | 1983-12-21 | 1985-07-18 | Dr. Weusthoff GmbH, 4000 Düsseldorf | METHOD FOR MANUFACTURING HIGH-STRENGTH, DUCTILE BODY FROM CARBON-BASED IRON-BASED ALLOYS |
-
1983
- 1983-08-03 JP JP14096383A patent/JPS6033343A/en active Granted
-
1984
- 1984-03-23 DE DE19843490361 patent/DE3490361T1/en active Pending
- 1984-03-23 DE DE3490361A patent/DE3490361C2/en not_active Expired - Fee Related
- 1984-03-23 WO PCT/JP1984/000122 patent/WO1985000835A1/en active Application Filing
- 1984-03-23 GB GB08506986A patent/GB2155037B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61291950A (en) * | 1985-06-17 | 1986-12-22 | Nippon Piston Ring Co Ltd | Wear resistance sintered alloy |
| JPS62120465A (en) * | 1985-11-20 | 1987-06-01 | Hitachi Metals Ltd | Wear resistant iron-base sintered sliding material |
| JPS62271914A (en) * | 1986-04-11 | 1987-11-26 | Nippon Piston Ring Co Ltd | Sintered cam shaft |
| JPH01100575U (en) * | 1987-12-23 | 1989-07-06 | ||
| TWI426186B (en) * | 2011-12-20 | 2014-02-11 | Metal Ind Res & Dev Ct | Low thermal expansion screw |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1985000835A1 (en) | 1985-02-28 |
| GB2155037A (en) | 1985-09-18 |
| GB2155037B (en) | 1987-02-18 |
| DE3490361T1 (en) | 1985-08-22 |
| JPH0379428B2 (en) | 1991-12-18 |
| GB8506986D0 (en) | 1985-04-24 |
| DE3490361C2 (en) | 1994-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4243414A (en) | Slidable members for prime movers | |
| US4388114A (en) | Anti-wear sintered alloy | |
| JPS60247036A (en) | Cv-cast iron cylinder liner | |
| JP2506333B2 (en) | Abrasion resistant iron-based sintered alloy | |
| JP3469435B2 (en) | Valve seat for internal combustion engine | |
| US4268309A (en) | Wear-resisting sintered alloy | |
| JPH0360901B2 (en) | ||
| US4504312A (en) | Wear-resistant sintered ferrous alloy and method of producing same | |
| JPS6033343A (en) | Wear resistance sintered alloy | |
| JPS61291950A (en) | Wear resistance sintered alloy | |
| KR20030055751A (en) | Cast iron with improved oxidation resistance at high temperature | |
| JPH07113141B2 (en) | Abrasion resistant iron-based sintered alloy | |
| JPS5985847A (en) | Fe-base sintered material for sliding member of internal-combustion engine | |
| JP3988971B2 (en) | Sintered member | |
| JP3470595B2 (en) | Al-Si alloy piston that can be installed above the top ring groove | |
| JPH0116296B2 (en) | ||
| JP2594505B2 (en) | Rocker arm | |
| JP2000337511A (en) | Piston-ring abrasion-resistant ring made of free-graphite precipitated iron system sintered material excellent in abrasion resistance and heat conductivity | |
| JPH0140101B2 (en) | ||
| JP3440008B2 (en) | Sintered member | |
| JPH0561346B2 (en) | ||
| JPS5982508A (en) | Sintered material of fe-tic system for sliding member in internal-combustion engine | |
| JP2000282192A (en) | Wear resistant ring for piston ring made of free graphite precipitated ferrous sintering material excellent in wear resistance | |
| JP2000282166A (en) | Wear resistant ring for piston ring, made of free graphite precipitated ferrous sintered material, excellent in wear resistance and thermal conductivity | |
| JPH0953423A (en) | Lead infiltrative fe radical sintered alloy valve guide member with excellent wear resistance and low-counter attackability |