JP3124300B2 - Composite valve seat and method of manufacturing the same - Google Patents

Composite valve seat and method of manufacturing the same

Info

Publication number
JP3124300B2
JP3124300B2 JP03010054A JP1005491A JP3124300B2 JP 3124300 B2 JP3124300 B2 JP 3124300B2 JP 03010054 A JP03010054 A JP 03010054A JP 1005491 A JP1005491 A JP 1005491A JP 3124300 B2 JP3124300 B2 JP 3124300B2
Authority
JP
Japan
Prior art keywords
valve seat
compact
copper alloy
weight
composite valve
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.)
Expired - Fee Related
Application number
JP03010054A
Other languages
Japanese (ja)
Other versions
JPH04308308A (en
Inventor
治 川村
保吉 江上
輝夫 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Piston Ring Co Ltd
Original Assignee
Nippon Piston Ring Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Piston Ring Co Ltd filed Critical Nippon Piston Ring Co Ltd
Priority to JP03010054A priority Critical patent/JP3124300B2/en
Publication of JPH04308308A publication Critical patent/JPH04308308A/en
Application granted granted Critical
Publication of JP3124300B2 publication Critical patent/JP3124300B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Powder Metallurgy (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は内燃機関用の複合バルブ
シートおよびその製造方法に関し、さらに詳しくは耐摩
耗性、耐熱性、剛性等の諸特性が向上していて総合性能
の高い複合バルブシートと、この複合バルブシートを効
率良く得ることのできる製造方法とに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite valve seat for an internal combustion engine and a method for manufacturing the same. And a manufacturing method capable of efficiently obtaining the composite valve seat.

【0002】[0002]

【従来の技術】内燃機関において用いられるバルブシー
トにおいては、その使用条件が過酷であるため、優れた
耐摩耗性、耐熱性、剛性等が要求される。従来、特に熱
負荷の高い条件下で使用されるバルブシート、たとえば
大型ディーゼルエンジン用のバルブシートとしては、耐
熱鋼(SUH鋼)を機械加工により削り出したバルブシ
ート形成材のバルブ接触面に例えばステライト盛り等の
表面処理を施してなるものが用いられてきた。
2. Description of the Related Art Valve seats used in internal combustion engines are required to have excellent wear resistance, heat resistance, rigidity, etc., because of the severe use conditions. Conventionally, valve seats used under particularly high heat load conditions, for example, as valve seats for large diesel engines, include, for example, a valve seat formed on a valve seat formed by cutting heat resistant steel (SUH steel) by machining. What has been subjected to a surface treatment such as stellite embossing has been used.

【0003】また、少なくともバルブとの接触面に焼結
材を用いてなる複合バルブシートも知られている。
[0003] A composite valve seat using a sintered material at least on a contact surface with the valve is also known.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、耐熱鋼
を用いてなるバルブシート形成材にステライト盛り等の
表面処理を施してなる従来のバルブシートにおいては、
耐熱鋼を削り出した後に、新たに表面処理を行なう必要
があるので、製造工程が煩雑であり、また製造コストが
高くなるという問題がある。しかも、このバルブシート
の耐摩耗性は未だ充分ではない。
However, in a conventional valve seat in which a surface treatment such as stellite filling is applied to a valve seat forming material using heat-resistant steel,
Since it is necessary to newly perform a surface treatment after cutting out the heat-resistant steel, there is a problem that the manufacturing process is complicated and the manufacturing cost is increased. Moreover, the wear resistance of this valve seat is not yet sufficient.

【0005】一方、少なくともバルブとの接触面に焼結
材を用いてなる従来の複合バルブシートは、耐摩耗性に
は優れているものの焼結材の剛性が充分ではなく、運転
時にいわゆる熱へたりを起こして焼結材が脱落するの
で、未だ実用に供されるまでには至っていない。本発明
は前記の事情に基づいてなされたものであり、本発明の
目的は、耐摩耗性、耐熱性および剛性等の諸特性が向上
していて過酷な使用条件下でも高い総合性能を発揮する
複合バルブシートと、この複合バルブシートを効率良く
得ることのできる製造方法とを提供することを目的とす
る。
On the other hand, conventional composite valve seats using a sintered material at least on the contact surface with the valve are excellent in abrasion resistance, but the rigidity of the sintered material is not sufficient, so that the valve is exposed to heat during operation. Since the sintered material falls off due to slippage, it has not yet been put to practical use. The present invention has been made based on the above circumstances, and an object of the present invention is to exhibit high overall performance even under severe use conditions in which various properties such as wear resistance, heat resistance and rigidity are improved. It is an object of the present invention to provide a composite valve seat and a manufacturing method capable of efficiently obtaining the composite valve seat.

【0006】[0006]

【課題を解決するための手段】前記の目的を達成するた
めの本発明の要旨は、耐熱鋼からなる母材と、焼結体か
らなるとともにバルブとの接触面を備えたバルブ接触部
材とを有する複合バルブシートにおいて、前記焼結体
が、この焼結体の空孔に銅合金が充分に含浸するように
前記焼結体における銅合金の含浸率が5〜20重量%の
範囲内で銅合金を含浸してなる鉄系焼結体からなり、前
記母材と前記焼結体とが焼結拡散接合および前記銅合金
のろう付効果により接合されてなることを特徴とする複
合バルブシートであり、耐熱鋼からなる母材上にバルブ
接触部材の形状に形成した鉄系耐摩耗性焼結材の圧粉体
を載置し、さらに該圧粉体上に銅合金圧粉体を載置して
複合バルブシート形成材とし、次いで該複合バルブシー
ト形成材を温度1000℃〜1200℃で焼結させるこ
とを特徴とする複合バルブシートの製造方法であり、前
記鉄系耐摩耗性焼結材の圧粉体と、該圧粉体上に載置す
る前記銅合金圧粉体との重量比を95:5〜80:20
に調整する請求項2記載の複合バルブシートの製造方法
である。
The gist of the present invention to achieve the above object is to provide a base material made of heat-resistant steel and a valve contact member made of a sintered body and having a contact surface with a valve. In the composite valve seat having the sintered body, the impregnation rate of the copper alloy in the sintered body is in the range of 5 to 20% by weight so that the pores of the sintered body are sufficiently impregnated with the copper alloy. A composite valve seat comprising an iron-based sintered body impregnated with an alloy, wherein the base material and the sintered body are joined by sinter diffusion bonding and a brazing effect of the copper alloy. Yes, a compact of iron-based wear-resistant sintered material formed in the shape of a valve contact member is placed on a base material made of heat-resistant steel, and a copper alloy compact is placed on the compact. To form a composite valve seat forming material. A method for producing a composite valve seat, comprising sintering at 0 ° C. to 1200 ° C., comprising: a green compact of the iron-based wear-resistant sintered material; and a copper alloy placed on the green compact. The weight ratio with the green compact is 95: 5 to 80:20.
The method for manufacturing a composite valve seat according to claim 2, wherein the pressure is adjusted to a value.

【0007】[0007]

【作用】本発明の複合バルブシートは、耐熱鋼からなる
母材と、焼結体からなるとともにバルブとの接触面を備
えたバルブ接触部材とを有し、該焼結体が銅または銅合
金を含浸してなる鉄系焼結体からなる。そして、この複
合バルブシートは、母材上にバルブ接触部材の形状に成
形した鉄系耐摩耗性焼結材の圧粉体を載置し、さらに該
圧粉体上に銅圧粉体または銅合金圧粉体を載置して複合
バルブシート形成材とし、次いで該複合バルブシート形
成材を温度1000℃〜1200℃で焼結させることに
より製造される。母材上にバルブ接触部材の形状に成形
した鉄系耐摩耗性焼結材の圧粉体を載置し、さらに該圧
粉体上に銅圧粉体または銅合金圧粉体を載置して複合バ
ルブシート形成材を形成した後、該複合バルブシート形
成材を温度1000℃〜1200℃で焼結させると、バ
ルブ接触部材の形状に成形した鉄系耐摩耗性焼結材の圧
粉体上に載置された銅圧粉体または銅合金圧粉体が鉄系
耐摩耗性焼結材の圧粉体内の空孔に含浸(溶浸)し、耐
熱鋼からなる母材と鉄系耐摩耗性焼結材の圧粉体とは焼
結拡散接合および銅または銅合金のろう付け効果によっ
て強固に接合される。
The composite valve seat of the present invention has a base material made of heat-resistant steel and a valve contact member made of a sintered body and having a contact surface with the valve, and the sintered body is made of copper or copper alloy. Made of an iron-based sintered body. In this composite valve seat, a green compact of an iron-based wear-resistant sintered material formed in the shape of a valve contact member is placed on a base material, and a copper compact or a copper compact is further placed on the green compact. It is manufactured by placing an alloy compact to form a composite valve seat forming material, and then sintering the composite valve seat forming material at a temperature of 1000C to 1200C. A green compact of an iron-based wear-resistant sintered material formed in the shape of a valve contact member is placed on the base material, and a copper compact or a copper alloy compact is placed on the green compact. After the composite valve seat forming material is formed by sintering the composite valve seat forming material at a temperature of 1000 ° C. to 1200 ° C., a green compact of an iron-based wear resistant sintered material formed into a shape of a valve contact member The copper compact or copper alloy compact placed on top is impregnated (infiltrated) into the pores in the compact of the iron-based wear-resistant sintered material, and the base material made of heat-resistant steel and the iron-based It is firmly bonded to the compact of the wearable sintered material by sintering diffusion bonding and the brazing effect of copper or a copper alloy.

【0008】したがって、本発明の複合バルブシート
は、高温にさらされても、いわゆる熱へたりを生じるこ
とがなく、耐摩耗性に優れたバルブ接触部材が脱落する
こともない。その結果、優れた耐熱性を保持していると
ともに耐摩耗性、剛性等の諸特性が向上した総合性能の
高い複合バルブシートが得られる。
Therefore, the composite valve seat of the present invention does not suffer from so-called heat sag even when exposed to a high temperature, and the valve contact member having excellent wear resistance does not fall off. As a result, it is possible to obtain a composite valve seat having high overall performance, which retains excellent heat resistance and has improved properties such as wear resistance and rigidity.

【0009】[0009]

【実施例】次に本発明の一実施例について、図面を参照
して説明する。図1は、本発明の複合バルブシートの断
面図である。図1に示すように、この複合バルブシート
は耐熱鋼からなる母材1と鉄系耐摩耗性焼結材からなる
バルブ接触部材2とからなり、このバルブ接触部材2に
は銅または銅合金が含浸(溶浸)されている。
Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of the composite valve seat of the present invention. As shown in FIG. 1, the composite valve seat includes a base material 1 made of heat-resistant steel and a valve contact member 2 made of an iron-based wear-resistant sintered material. Impregnated (infiltrated).

【0010】ここで、母材1を形成する耐熱鋼として
は、たとえば炭素(C)、けい素(Si)、マンガン
(Mn)、ニッケル(Ni)、クロム(Cr)等を含有
するSUH鋼が好ましく、いわゆるマルテンサイト系の
SUH鋼は特に好ましい。さらに具体的には、重量割合
で、C:0.35〜0.45重量%、Si:1.8〜
2.5重量%、Mn:0.1〜0.6重量%、Ni:
0.1〜0.6重量%、Cr:10〜12重量%、モリ
ブデン(Mo):0.7〜1.3重量%および残部鉄
(Fe)を含有するSUH3鋼が好ましい。
Here, as the heat-resistant steel forming the base material 1, for example, SUH steel containing carbon (C), silicon (Si), manganese (Mn), nickel (Ni), chromium (Cr) and the like is used. A so-called martensitic SUH steel is particularly preferred. More specifically, C: 0.35 to 0.45% by weight, Si: 1.8 to 1.8% by weight.
2.5% by weight, Mn: 0.1 to 0.6% by weight, Ni:
SUH3 steel containing 0.1 to 0.6% by weight, Cr: 10 to 12% by weight, molybdenum (Mo): 0.7 to 1.3% by weight and the balance iron (Fe) is preferred.

【0011】また、バルブ接触部材2を形成する鉄系耐
摩耗性焼結材としては、たとえば、重量割合でC:0.
5〜2.0重量%、Ni:1.0〜5.0重量%、C
r:5.0〜15.0重量%、Mo:0.3〜3.0重
量%、Co:5.0〜15.0重量%、W:1.0〜
5.0重量%および残部鉄(Fe)よりなる焼結材が挙
げられる。
As the iron-based wear-resistant sintered material forming the valve contact member 2, for example, C: 0.
5 to 2.0% by weight, Ni: 1.0 to 5.0% by weight, C
r: 5.0 to 15.0% by weight, Mo: 0.3 to 3.0% by weight, Co: 5.0 to 15.0% by weight, W: 1.0 to
A sintered material composed of 5.0% by weight and the balance iron (Fe) is included.

【0012】また、このバルブ接触部材2を形成する焼
結材は空孔を有し、その空孔率は容積割合で、通常、4
〜17%、好ましくは8.5〜13%である。そして、
この空孔には銅または銅合金が含浸(溶浸)される。こ
こで、溶浸用の銅または銅合金はこの技術分野において
周知のものであり、銅合金としては、たとえば特開昭5
4−31008号公報、同56−108803号公報、
同56−130406号公報および同56−12181
0号公報等に記載のCu−Fe、Cu−Fe−Mn、C
u−Sn、Cu−Fe−Si−Mn、Cu−Zn、Cu
−Co等が挙げられ、さらに具体的には、95Cu−5
Fe、92Cu−3Fe−5Mn、91Cu−3Fe−
6Mn、90Cu−10Zn、80Cu−20Zn、9
7Cu−3Co等が挙げられる。
The sintered material forming the valve contact member 2 has porosity, and the porosity is a volume ratio, usually 4%.
To 17%, preferably 8.5 to 13%. And
These holes are impregnated (infiltrated) with copper or a copper alloy. Here, copper or copper alloy for infiltration is well known in this technical field.
JP-A-4-31008, JP-A-56-108803,
Nos. 56-130406 and 56-12181
No. 0, etc., Cu-Fe, Cu-Fe-Mn, C
u-Sn, Cu-Fe-Si-Mn, Cu-Zn, Cu
-Co and the like, and more specifically, 95Cu-5
Fe, 92Cu-3Fe-5Mn, 91Cu-3Fe-
6Mn, 90Cu-10Zn, 80Cu-20Zn, 9
7Cu-3Co and the like.

【0013】バルブ接触部材2における銅または銅合金
の含浸率は重量割合で、通常、5〜20重量%、好まし
くは10〜15重量%の範囲であり、バルブ接触部材2
を形成する焼結材の空孔に銅または銅合金が充分に含浸
(溶浸)する割合を適宜に設定することができる。この
バルブ接触部材2は、図1に示すように、少なくともバ
ルブ10との接触面に設けられる。
The impregnation rate of copper or copper alloy in the valve contact member 2 is usually in the range of 5 to 20% by weight, preferably 10 to 15% by weight.
The rate at which copper or a copper alloy is sufficiently impregnated (infiltrated) into the pores of the sintered material forming the above can be appropriately set. The valve contact member 2 is provided on at least a contact surface with the valve 10 as shown in FIG.

【0014】母材1とバルブ接触部材2との境界は、焼
結拡散接合およびバルブ接触部材2に含浸された銅また
は銅合金のろう付け効果によって接合されている。した
がって、本発明の複合バルブシートにおいては、母材1
とバルブ接触部材2とが強固に接合され、耐摩耗性、耐
熱性および剛性等の諸特性が向上している。
The boundary between the base material 1 and the valve contact member 2 is joined by sintering diffusion bonding and brazing effect of copper or a copper alloy impregnated in the valve contact member 2. Therefore, in the composite valve seat of the present invention, the base material 1
And the valve contact member 2 are firmly joined, and various properties such as wear resistance, heat resistance and rigidity are improved.

【0015】本実施例においては、この複合バルブシー
トを次のようにして製造した。先ず、重量割合で、C:
0.40重量%、Si:2.00重量%、Mn:0.3
0重量%、Ni:0.20重量%、Cr:11.00重
量%、Mo:1.00重量%および残部Feを含有する
SUH3鋼を用いて、図2に示した断面形状の母材1を
形成した。
In this embodiment, this composite valve seat was manufactured as follows. First, by weight, C:
0.40% by weight, Si: 2.00% by weight, Mn: 0.3
Base material 1 having a cross-sectional shape shown in FIG. 2 using SUH3 steel containing 0% by weight, Ni: 0.20% by weight, Cr: 11.00% by weight, Mo: 1.00% by weight and the balance Fe. Was formed.

【0016】次に、重量割合で、C:1.30重量%、
Ni:2.00重量%、Cr:10.00重量%、M
o:1.00重量%、Co:10.00重量%、W:
2.00重量%および残部Feよりなる鉄系耐摩耗性焼
結材の圧粉体3を、図2に示すように、母材1上に載置
した。さらに、この鉄系耐摩耗性焼結材の圧粉体3上に
銅合金(銅97重量%、コバルト3重量%)圧粉体4を
載置して図2に示した複合バルブシート形成材5を作成
した。なお、使用に供した鉄系耐摩耗性焼結材の圧粉体
3と銅合金圧粉体4との重量比は、(鉄系耐摩耗性焼結
材の圧粉体3の重量):(銅合金圧粉体4の重量)で9
0:10であった。ここで、鉄系耐摩耗性焼結材の圧粉
体と該圧粉体上に載置する銅合金圧粉体との重量比は、
通常、95:5〜80:20、好ましくは93:7〜8
5:15である。
Next, C: 1.30% by weight,
Ni: 2.00% by weight, Cr: 10.00% by weight, M
o: 1.00% by weight, Co: 10.00% by weight, W:
As shown in FIG. 2, a green compact 3 of an iron-based wear-resistant sintered material consisting of 2.00% by weight and the balance of Fe was placed on the base material 1. Further, a copper alloy (97% by weight of copper, 3% by weight of cobalt) compact 4 is placed on the compact 3 of the iron-based wear-resistant sintered material, and the composite valve seat forming material shown in FIG. 5 was created. The weight ratio of the iron-based wear-resistant sintered compact 3 and the copper alloy compact 4 used was (weight of the iron-based wear-resistant sintered compact 3): 9 (weight of copper alloy compact 4)
It was 0:10. Here, the weight ratio between the green compact of the iron-based wear-resistant sintered material and the copper alloy green compact placed on the green compact is:
Usually 95: 5 to 80:20, preferably 93: 7 to 8
5:15.

【0017】次いで、この複合バルブシート形成材5
を、温度1130℃の雰囲気炉中で45分間焼結させ
て、図3に示したように、バルブシート接触部材2中に
銅合金が含浸(溶浸)されているとともに、母材1とバ
ルブシート接触部材2とが接合されてなる複合バルブシ
ートを得た。なお、焼成温度は、通常、1000〜12
00℃、好ましくは1100〜1150℃である。
Next, the composite valve seat forming material 5
Is sintered in an atmosphere furnace at a temperature of 1130 ° C. for 45 minutes, so that the copper alloy is impregnated (infiltrated) in the valve seat contact member 2 as shown in FIG. A composite valve seat obtained by joining the sheet contact member 2 was obtained. The firing temperature is usually 1000 to 12
00 ° C, preferably 1100 to 1150 ° C.

【0018】この複合バルブシートについて、剪断強度
試験および抜き荷重試験をそれぞれ次のようにして行な
った。 剪断強度試験;本実施例の複合バルブシートから母材と
バルブ接触部材との接合体を切り出して試験片(6mm
×2.7mm×2mm)を作成し、この試験片における
バルブ接触部材から0.3mmの部位(母材とルブ接触
部材との境界部分)において下方に荷重を加えて剪断強
度を測定した。
The composite valve seat was subjected to a shear strength test and a punching load test as follows. Shear strength test: A joined body of the base material and the valve contact member was cut out from the composite valve seat of the present example and a test piece (6 mm
× 2.7 mm × 2 mm), a load was applied downward at a portion of 0.3 mm from the valve contact member (a boundary portion between the base material and the lube contact member) in the test piece, and the shear strength was measured.

【0019】抜き荷重試験;外径38mmφ、内径3
2.5mmφ、厚さ6mmの試験片を使用し、バルブシ
ートを鋳鉄製シリンダーヘッドに焼き止めし、その後、
温度400℃で15時間熱負荷を加えてから空冷した後
の抜き荷重を測定した。 また、比較のため以下のバルブシートを作成し、実施例
と同様にして剪断強度試験および抜き荷重試験をそれぞ
れ行なった。その結果を表1に示す。
Punching load test; outer diameter 38 mmφ, inner diameter 3
Using a 2.5 mmφ, 6 mm thick test piece, the valve seat was baked on a cast iron cylinder head.
A heat load was applied at a temperature of 400 ° C. for 15 hours, and then the air-cooled load was measured. Further, the following valve seats were prepared for comparison, and a shear strength test and a punching load test were performed in the same manner as in the examples. Table 1 shows the results.

【0020】比較例1:SUH3鋼にステライト盛りを
施してなるバルブシート。 比較例2:以下の組成の焼結材からなるバルブシート。 C:1.2重量%、Ni:1.7重量%、Cr:6.5
重量%、Mo:0.5重量%、Co:6.4重量%、
W:2.0重量%、残部Fe 比較例3:SUH3鋼および比較例2の焼結材と同様の
焼結材からなる複合バルブシート。
Comparative Example 1: A valve seat obtained by applying stellite to SUH3 steel. Comparative Example 2: A valve seat made of a sintered material having the following composition. C: 1.2% by weight, Ni: 1.7% by weight, Cr: 6.5
% By weight, Mo: 0.5% by weight, Co: 6.4% by weight,
W: 2.0% by weight, balance Fe Comparative Example 3: Composite valve seat made of SUH3 steel and the same sintered material as the sintered material of Comparative Example 2.

【0021】[0021]

【表1】 [Table 1]

【0022】表1の結果から、本実施例の複合バルブシ
ートは、母材とバルブ接触部材との接合強度が充分であ
るとともに、いわゆる熱へたりを起こしにくいことが確
認された。すなわち、本発明の複合バルブシートは、耐
摩耗性、剛性等の諸特性が向上しているにもかかわら
ず、優れた耐熱性を保持しているものであり、耐摩耗
性、耐熱性および剛性等の諸特性に優れている。
From the results shown in Table 1, it was confirmed that the composite valve seat of the present embodiment has sufficient bonding strength between the base material and the valve contact member, and hardly causes so-called heat sag. That is, the composite valve seat of the present invention retains excellent heat resistance even though various properties such as wear resistance and rigidity are improved, and has excellent wear resistance, heat resistance and rigidity. Excellent in various properties such as

【0023】[0023]

【発明の効果】本発明によると、耐熱鋼からなる母材と
特定のバルブ接触部材とが焼結拡散接合および銅あるい
は銅合金のろう付け効果により接合されているので、母
材とバルブ接触部材との接合強度が極めて高く、耐摩耗
性に優れたバルブ接触部材が熱へたりにより脱落するこ
とがない。したがって、耐摩耗性、耐熱性および剛性等
の諸特性に優れていて総合性能の高い複合バルブシート
を提供することができるとともに、この複合バルブシー
トを効率良く得ることのできる製造方法を提供すること
ができる。
According to the present invention, since the base material made of heat resistant steel and the specific valve contact member are joined by sintering diffusion bonding and the brazing effect of copper or a copper alloy, the base material and the valve contact member are joined. The valve contact member, which has an extremely high bonding strength to the valve and has excellent wear resistance, does not fall off due to heat. Therefore, it is possible to provide a composite valve seat which is excellent in various properties such as wear resistance, heat resistance and rigidity and has high overall performance, and to provide a manufacturing method capable of efficiently obtaining the composite valve seat. Can be.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本実施例の複合バルブシートを示す断面図であ
る。
FIG. 1 is a cross-sectional view showing a composite valve seat of the present embodiment.

【図2】本実施例における複合バルブシート形成材を示
す断面説明図である。
FIG. 2 is an explanatory sectional view showing a composite valve seat forming material according to the present embodiment.

【図3】本実施例において鉄系耐摩耗性焼結材上に載置
した銅合金圧粉体が該鉄系耐摩耗性焼結材からなるバル
ブ接触部材内に含漬した状態を示す断面説明図である。
FIG. 3 is a cross-sectional view showing a state in which a copper alloy compact placed on an iron-based wear-resistant sintered material is immersed in a valve contact member made of the iron-based wear-resistant sintered material in the present embodiment. FIG.

【符号の説明】[Explanation of symbols]

1 母材 2 バルブ接触部材 3 鉄系耐摩耗性焼結材の圧粉体 4 銅合金圧粉体 5 複合バルブシート形成材 DESCRIPTION OF SYMBOLS 1 Base material 2 Valve contact member 3 Iron-based wear-resistant sintered compact 4 Copper alloy compact 5 Composite valve seat forming material

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−23856(JP,A) 特開 昭59−203813(JP,A) 特開 昭61−505(JP,A) 特開 昭61−561(JP,A) 特開 昭62−164803(JP,A) 特公 昭56−14848(JP,B2) 特公 昭63−52093(JP,B2) (58)調査した分野(Int.Cl.7,DB名) F01L 3/02 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-23856 (JP, A) JP-A-59-203813 (JP, A) JP-A-61-505 (JP, A) JP-A-61-505 561 (JP, A) JP-A-62-164803 (JP, A) JP-B-56-14848 (JP, B2) JP-B-63-52093 (JP, B2) (58) Fields investigated (Int. Cl. 7 , DB name) F01L 3/02

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 耐熱鋼からなる母材と、焼結体からなる
とともにバルブとの接触面を備えたバルブ接触部材とを
有する複合バルブシートにおいて、前記焼結体が、この
焼結体の空孔に銅合金が充分に含浸するように前記焼結
体における銅合金の含浸率が5〜20重量%の範囲内で
銅合金を含浸してなる鉄系焼結体からなり、前記母材と
前記焼結体とが焼結拡散接合および前記銅合金のろう付
効果により接合されてなることを特徴とする複合バルブ
シート。
And the base material consisting of 1. A heat-resistant steel, in the composite valve seat having a valve contacting member having a contacting surface between the valve together with a sintered body, the sintered body, this
The sintering is performed so that the copper alloy is sufficiently impregnated
An iron-based sintered body impregnated with a copper alloy having an impregnation ratio of the copper alloy in the range of 5 to 20% by weight , wherein the base material and the sintered body are sintered and diffusion bonded. And a composite valve seat which is joined by a brazing effect of the copper alloy.
【請求項2】 耐熱鋼からなる母材上にバルブ接触部材
の形状に形成した鉄系耐摩耗性焼結材の圧粉体を載置
し、さらに該圧粉体上に銅合金圧粉体を載置して複合バ
ルブシート形成材とし、次いで該複合バルブシート形成
材を温度1000℃〜1200℃で焼結させることを特
徴とする複合バルブシートの製造方法。
2. A valve contact member on a base material made of heat resistant steel.
Places a compact of iron-based wear-resistant sintered material formed into a shape
Then, a copper alloy compact is placed on the compact and the composite
Lube sheet forming material, and then forming the composite valve seat
Specially, sintering the material at a temperature of 1000 to 1200 ° C.
A method of manufacturing a composite valve seat.
【請求項3】 前記鉄系耐摩耗性焼結材の圧粉体と、該
圧粉体上に載置する前記銅合金圧粉体との重量比を9
5:5〜80:20に調整する請求項2記載の複合バル
ブシートの製造方法。
3. A green compact of the iron-based wear-resistant sintered material,
The weight ratio to the copper alloy compact placed on the compact is 9
3. The composite valve according to claim 2, wherein the ratio is adjusted to 5: 5 to 80:20.
Busheet manufacturing method.
JP03010054A 1991-01-30 1991-01-30 Composite valve seat and method of manufacturing the same Expired - Fee Related JP3124300B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03010054A JP3124300B2 (en) 1991-01-30 1991-01-30 Composite valve seat and method of manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03010054A JP3124300B2 (en) 1991-01-30 1991-01-30 Composite valve seat and method of manufacturing the same

Publications (2)

Publication Number Publication Date
JPH04308308A JPH04308308A (en) 1992-10-30
JP3124300B2 true JP3124300B2 (en) 2001-01-15

Family

ID=11739680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03010054A Expired - Fee Related JP3124300B2 (en) 1991-01-30 1991-01-30 Composite valve seat and method of manufacturing the same

Country Status (1)

Country Link
JP (1) JP3124300B2 (en)

Also Published As

Publication number Publication date
JPH04308308A (en) 1992-10-30

Similar Documents

Publication Publication Date Title
US4734968A (en) Method for making a valve-seat insert for internal combustion engines
CA2172029C (en) A metal sintered body composite material and a method for producing the same
JP4223559B2 (en) Iron-based powder
US4485147A (en) Process for producing a sintered product of copper-infiltrated iron-base alloy and a two-layer valve seat produced by this process
JP2002129296A (en) Iron-base sintered alloy material for valve seat, and valve seat made of iron-base sintered alloy
JP2010215951A (en) Sintered composite sliding component and manufacturing method therefor
JPH11753A (en) Metallic porous body, light alloy composite member, and their manufacture
KR100691097B1 (en) Sintered steel material
JP2001295915A (en) Sintered sprocket for silent chain and method of manufacturing the same
JP3124300B2 (en) Composite valve seat and method of manufacturing the same
JP3340908B2 (en) Sintered sliding member and manufacturing method thereof
KR101046830B1 (en) Sintered composite sliding parts and its manufacturing method
JPS60147514A (en) High-temperature abrasion resistant valve seat
KR19980028998A (en) Valve lifter for internal combustion engine and its manufacturing method
JP3254909B2 (en) Internal-combustion engine tappet member having high joining strength with chip material
JPH11141316A (en) Valve seat body having two layer structure and its manufacture
JP3230125B2 (en) Internal-combustion engine tappet member having high joining strength with chip material
JP3248407B2 (en) Internal combustion engine tappet member with strong bonding of chip material
JP3230124B2 (en) Internal-combustion engine tappet member having high joining strength with chip material
JPH01186261A (en) Joining method for valve seat
JP3230126B2 (en) Internal-combustion engine tappet member having high joining strength with chip material
JP2697429B2 (en) Two-layer valve seat made of iron-based sintered alloy for internal combustion engine
JPH05140702A (en) Two layer valve seat made of ferrous sintered alloy for internal combustion engine
JP3230127B2 (en) Internal-combustion engine tappet member having high joining strength with chip material
JPH06145720A (en) Double layer valve seat made of copper-infiltrated iron series sintered alloy for internal combustion engine

Legal Events

Date Code Title Description
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071027

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081027

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081027

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091027

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101027

Year of fee payment: 10

LAPS Cancellation because of no payment of annual fees