JP2796583B2 - Overlay welding method of overlay material to engine valve - Google Patents
Overlay welding method of overlay material to engine valveInfo
- Publication number
- JP2796583B2 JP2796583B2 JP2196169A JP19616990A JP2796583B2 JP 2796583 B2 JP2796583 B2 JP 2796583B2 JP 2196169 A JP2196169 A JP 2196169A JP 19616990 A JP19616990 A JP 19616990A JP 2796583 B2 JP2796583 B2 JP 2796583B2
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- JP
- Japan
- Prior art keywords
- overlay
- base material
- engine valve
- build
- layer
- 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 - Lifetime
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、例えばエンジンバルブの弁フェース部等
に、硬質かつ高耐摩耗性を有する盛金材料を肉盛溶接す
る方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for overlay-welding a hard metal material having high wear resistance to, for example, a valve face portion of an engine valve.
エンジンバルブの弁フェース部は、高負荷、高サイク
ルの繰返し荷重を受けるため、母材単体のままでは著し
く摩耗する。そのため、弁フェース部に、硬質かつ高耐
摩性の盛金材料、例えばステライト等の合金粉末を肉盛
溶接して、耐摩耗性を高めるようにしている。Since the valve face of the engine valve receives a high load and a high cycle load, the base face alone wears remarkably. Therefore, a hard metal material having high wear resistance, for example, an alloy powder of stellite or the like is overlay-welded to the valve face portion to increase wear resistance.
このような肉盛材料は、通常、第３図に示すようなプ
ラズマ溶接装置を用いて行なわれる。Such a build-up material is usually performed using a plasma welding apparatus as shown in FIG.
垂直面に対して、ほぼ30゜傾斜させた回転台（１）上
に、エンジンバルブ（２）の傘部（2a）を載置し、回転
台（１）を一定方向に回転させつつ、弁フェース部（2
b）の直上に臨ませたトーチ（３）の先端よりプラズマ
アーク（４）を発生させる。The umbrella part (2a) of the engine valve (2) is placed on the turntable (1) inclined at about 30 ° with respect to the vertical plane, and while the turntable (1) is rotated in a certain direction, the valve is rotated. Face (2
A plasma arc (4) is generated from the tip of the torch (3) facing directly above b).
これと同時に、トーチ（３）の先端のノズルより、粉
末状のステライト（５）を供給し、プラズマアーク
（４）の熱により、ステライト（５）と弁フェース部
（2b）の表層とを溶融させながら、傘部（2a）を軸線ま
わりに１周させることにより、弁フェース部（2b）に形
成された環状凹溝（2c）の全面に肉盛り（６）が施され
る。At the same time, powdery stellite (5) is supplied from the nozzle at the tip of the torch (3), and the stellite (5) and the surface layer of the valve face (2b) are melted by the heat of the plasma arc (4). By causing the umbrella portion (2a) to make one revolution around the axis while making it, the padding (6) is applied to the entire surface of the annular groove (2c) formed in the valve face portion (2b).
最近の自動車用エンジンは、過給器を装着したり、多
弁機構を採用するなど、高速、高回転、高負荷及び高出
力化の傾向にあり、かつ排気がガス清浄化の観点から、
弁フェース部等に潤滑効果のある物質（例えば四エチル
鉛等）を含まない燃料が使用される傾向にある。Recent automobile engines tend to be high speed, high rotation, high load and high output, such as mounting a supercharger and adopting a multi-valve mechanism, and the exhaust gas from the viewpoint of gas purification,
There is a tendency to use fuel that does not contain a substance having a lubricating effect (for example, tetraethyl lead or the like) in the valve face or the like.
また、ディーゼルエンジンにおいては、使用される燃
料の点から、優れた耐食性、耐酸化性が要求される。Diesel engines are required to have excellent corrosion resistance and oxidation resistance in view of the fuel used.
このようなエンジンに用いられるエンジンバルブやバ
ルブシートには、優れた高温強度や高温耐食性などの優
れた高温特性、並びに高い耐摩耗性が要求される。しか
し、上記のように、ステライト単体からなる盛金材料
を、エンジンバルブの弁フェース部やバルブシートのシ
ート部に肉盛溶接したのみでは、要求される十分な高温
特性や耐摩耗性等を得ることが難しい。Engine valves and valve seats used in such engines are required to have excellent high-temperature properties such as excellent high-temperature strength and high-temperature corrosion resistance and high wear resistance. However, as described above, simply by overlay-welding the stellite single-piece filler material to the valve face portion of the engine valve or the seat portion of the valve seat will obtain the required sufficient high-temperature characteristics and wear resistance. It is difficult.
そこで本願出願人は、上記ステライトに化わる高耐摩
耗性を有する盛金材料として、Co基合金からなるステラ
イト粉末をベー材料とし、これに高硬度かつ高融点の硬
質粒子、例えば炭化物系の粉末を添加した複合盛金材料
を開発し、平成２年５月30日に出願している（特願平２
−138448号）。Accordingly, the applicant of the present application has used a stellite powder made of a Co-based alloy as a base material as a ferrite material having high wear resistance to be converted to the stellite, and hard particles having a high hardness and a high melting point, such as a carbide-based powder. Developed composite embankment material with addition of filing and filed application on May 30, 1990
No. 138448).
上記複合盛金材料は、炭化物系の粉末の添加割合が増
加するにしたがって、ベース材中における析出炭化物の
占める割合が増大して、肉盛部の硬度が比例的に高まる
特性を有しているが、次のような問題を生じることがあ
る。The composite overlay material has a characteristic that as the addition ratio of the carbide-based powder increases, the ratio of the precipitated carbide in the base material increases, and the hardness of the overlay portion increases proportionally. However, the following problem may occur.
すなわち、上記した複合盛金材料を、上述のステライ
ト単体と同様に、単にワークを１回転させて、１度に所
要量肉盛溶接すると、ステライトよりも高比重で、かつ
融点の高い炭化物系の粉末が、未溶融又は半溶融状態の
まま母材との境界部に沈降して集積し、耐摩耗性の最も
必要な弁フェースの表層部に、炭化物による析出硬化層
が形成されないことがある。That is, the above-mentioned composite embankment material, just like the above-mentioned stellite simple substance, is simply rotated by one rotation of the work and welded by a required amount at a time, and a carbide-based material having a higher specific gravity than stellite and having a higher melting point. The powder may settle and accumulate at the boundary with the base material in an unmelted or semi-molten state, and a precipitation hardened layer made of carbide may not be formed on the surface layer of the valve face that is most required for wear resistance.
本発明は、上記課題に鑑みてなされたもので、その目
的とするところは、炭化物等の硬質粒子を肉盛部の表層
に分布させることにより、表層部の硬度を高め、もっ
て、耐摩耗性に優れる弁フェース部等が形成されるよう
にした、エンジンバルブ等への盛金材料の肉盛溶接方法
を提供することにある。The present invention has been made in view of the above problems, and aims at distributing hard particles such as carbides to the surface layer of the build-up portion, thereby increasing the hardness of the surface layer portion, and thereby improving wear resistance. It is an object of the present invention to provide a method for overlay welding of an overlay material to an engine valve or the like, in which a valve face portion or the like excellent in the above is formed.
上記目的は、本発明によれば、次のようにして達成さ
れる。According to the present invention, the above object is achieved as follows.
（１）エンジンバルブの弁フェース部等に形成された環
状凹溝に、母材と異なる盛金材料を肉盛溶接するに際
し、エンジンバルブをその軸線まわりに回転させつつ、
前記軸線に対してほぼ対称的に配置された少なくとも２
つのトーチを備える肉盛溶接装置における一方のトーチ
にベース材料のみを供給して、前記環状凹溝内に、予定
の肉盛厚さよりも薄肉の第１層目の肉盛溶接を施しつ
つ、肉盛溶接装置における他方のトーチに硬質粒子を供
給して、前記第１層目の肉盛りの上面に、肉盛全体の厚
さが予定の厚さとなるように、第２層目の肉盛溶接を施
す。(1) At the time of overlay welding of an overlay material different from the base material to an annular groove formed in a valve face portion or the like of an engine valve, while rotating the engine valve around its axis,
At least two arranged approximately symmetrically with respect to said axis
Only the base material is supplied to one of the torches in the overlay welding apparatus having two torches, and while the first groove is thinner than the expected overlay thickness in the annular groove, the overlay is welded. Hard particles are supplied to the other torch in the build-up welding apparatus, and the second-layer build-up welding is performed on the upper surface of the first-layer build-up so that the entire thickness of the build-up becomes a predetermined thickness. Is applied.
（２）エンジンバルブの弁フェース部等に形成された環
状凹溝に、母材と異なる盛金材料を肉盛溶接するに際
し、前記環状凹溝にベース材料のみを肉盛溶接したの
ち、ベース材料が未硬化の状態において、その上面にベ
ース材料よりも高硬度の硬質粒子を供給することによ
り、硬質粒子をベース材料の表層部に分布させる。(2) When overlaying a base material different from the base metal into an annular groove formed in a valve face portion or the like of an engine valve, only the base material is overlay-welded to the annular groove, and then the base material is formed. In an uncured state, hard particles having higher hardness than the base material are supplied to the upper surface thereof, so that the hard particles are distributed on the surface layer of the base material.
先にベース材料を肉盛溶接し、その上に硬質粒子を溶
着又は散布するので、硬質粒子が母材との境界部に沈降
するのが防止され、肉盛部表層の硬度は著しく高まる。Since the base material is first overlaid and the hard particles are welded or dispersed thereon, the hard particles are prevented from settling at the boundary with the base material, and the hardness of the surface layer of the overlay is significantly increased.
以下、本発明の実施例を、第１図および第２図に基づ
いて説明する。Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
なお、第３図に示す従来例と同様の部材には、同じ符
号を付して、説明を省略する。The same members as those in the conventional example shown in FIG. 3 are denoted by the same reference numerals, and description thereof will be omitted.
第１図に示すように、基本的には従来と同様のプラズ
マ溶接装置におけるほぼ水平の回転台（１）には、傘部
（2a）における弁フェース部（2b）に環状凹溝（2c）が
予め形成されるエンジンバルブ（２）が、その傘部（2
a）を下方として、妄りに動くことないように、垂直状
態で適宜載置して保持されている。As shown in FIG. 1, a substantially horizontal turntable (1) in a plasma welding apparatus basically similar to the conventional one has an annular concave groove (2c) in a valve face part (2b) in an umbrella part (2a). The engine valve (2), which is formed in advance, has its umbrella (2)
With a) facing downward, it is properly placed and held in a vertical state so as not to move sly.
上記弁フェース部（2b）を右左両側方には、それぞ
れ、下端が弁フェース部（2b）の方向を向くように、エ
ンジンバルブ（２）の中心方向へ向けて傾斜させた第１
層目肉盛り用トーチ（12）と、同じく第２層目肉盛用ト
ーチ（13）とが、配設されている。The first valve face (2b) is tilted toward the center of the engine valve (2) so that the lower end faces the right and left sides of the engine valve (2) so that the lower end faces the direction of the valve face (2b).
A second layer overlay torch (12) and a second layer overlay torch (13) are also provided.
まず、第１層目肉盛り用トーチ（12）の先端より、不
活性シールドガスで囲まれたプラズマアーク（14）を発
生させ、かつそれと同時に、粉末状のベース材料
（８）、例えばCo基からなるステライト等の盛金材料の
みをを供給し、エンジンバルブ（２）が１周する間に、
肉盛部の厚さが予定の肉盛厚さのほぼ半分かそれ以上と
なるように、環状凹溝（2c）の全面に、第１層目の肉盛
り（９）を施す。First, a plasma arc (14) surrounded by an inert shielding gas is generated from the tip of the first layer overlay torch (12), and at the same time, a powdery base material (8), for example, a Co-based material. Is supplied only by the stellite or other prosthetic material, and while the engine valve (2) makes one revolution,
The first-layer build-up (9) is applied to the entire surface of the annular groove (2c) so that the thickness of the build-up portion is substantially half or more than the planned build-up thickness.
ついで、エンジンバルブ（２）が約半回転して、第１
層目の肉盛り（９）部の先端が、第２層目肉盛り用トー
チ（13）の直下まで来たとき、このトーチ（13）の先端
よりプラズマアーク（15）を発生させると同時に、図示
しない別のホッパより、ベース材料（８）よりも高硬度
高融点の盛金材料としての炭化物系の硬質粒子（10）を
供給し、順次回転してくる第１層目の肉盛り（９）の表
層を溶融しつつ、その上面に、第２層目の肉盛り（11）
を施し、所定の肉盛厚さとする。Then, the engine valve (2) rotates about half a
When the tip of the cladding (9) of the layer reaches just below the torch (13) for the second layer, a plasma arc (15) is generated from the tip of the torch (13). From another hopper (not shown), carbide-based hard particles (10) as a bank material having a higher hardness and a higher melting point than the base material (8) are supplied, and the first-layer build-up (9) rotating sequentially. (2) While the surface layer of (2) is being melted,
To a predetermined overlay thickness.
ついで、エンジンバルブ（２）が１回転して、環状凹
溝（2c）の前面に第１層目の肉盛り（９）が施されたの
と同時に、第１層目肉盛り用トーチ（12）よりのプラズ
マアーク（14）とベース材料（８）の供給を停止し、さ
らにエンジンバルブ（２）が半回転して、第１層目の肉
盛り（９）の上面の全面に第２層目の肉盛り（11）が施
されたとき、第２層目肉盛り用トーチ（13）よりのプラ
ズマアーク（15）と硬質粒子（10）の供給を停止させ
る。Next, the engine valve (2) makes one rotation, and the first layer of the build-up (9) is formed on the front surface of the annular groove (2c), and at the same time, the first-layer build-up torch (12) is formed. ), The supply of the plasma arc (14) and the base material (8) is stopped, and the engine valve (2) is further rotated half a turn to cover the entire upper surface of the first layer buildup (9). When the eye cladding (11) is applied, the supply of the plasma arc (15) and the hard particles (10) from the second layer cladding torch (13) is stopped.
このように、第１周目でベース材料（８）のみを、ま
た第２周目で硬質粒子（10）を肉盛溶接するから、弁フ
ェース部（2b）には、第２図に示すように、第１周目の
肉盛り（９）と、第２周目の肉盛り（11）との２層から
なる肉盛部が形成され、かつ第２層目の肉盛り（11）を
施す際において、硬質粒子（10）が、母材との境界部、
すなわち、環状凹溝（2c）付近に沈降するのが防止され
るので、弁フェース部（2b）の表層部に、硬質粒子（1
0）による炭化物が効果的に析出し、あるいは、硬質粒
子（10）が半溶融状態のまま広く分布し浸透するため、
その部分の硬度は、著しく高められる。In this way, only the base material (8) is welded on the first cycle and the hard particles (10) are welded on the second cycle, so that the valve face (2b) is welded as shown in FIG. In addition, a built-up portion composed of two layers, that is, a first round build-up (9) and a second round build-up (11) is formed, and the second layer build-up (11) is applied. In this case, the hard particles (10) are
That is, sedimentation near the annular groove (2c) is prevented, so that the hard particles (1) are formed on the surface layer of the valve face (2b).
0) effectively precipitates carbides, or hard particles (10) are widely distributed and penetrate in a semi-molten state,
The hardness of that part is significantly increased.
請求項（２）記載の発明は、図示を省略してあるが、
第１図に示す肉盛溶接装置におけるトーチ（３）の近傍
に、硬質粒子を供給するための供給手段を設けることに
より実施される。Although the invention described in claim (2) is not shown,
This is carried out by providing a supply means for supplying hard particles in the vicinity of the torch (3) in the overlay welding apparatus shown in FIG.
すなわち、ベース材料の肉盛溶接を施した直後におい
て、肉盛部の表層がまだ硬化しない半溶融状態にある間
に、硬質粒子供給手段より供給された硬質粒子を、ベー
ス材料の肉盛部の表層に散布して溶け込ませる。That is, immediately after performing the build-up welding of the base material, while the surface layer of the build-up portion is still in a semi-molten state where it is not hardened, the hard particles supplied from the hard particle supply means are applied to the build-up portion of the base material. Sprinkle on the surface to dissolve.
この発明によっても、硬質粒子が母材との境界部に沈
降するのが防止され、弁フェース部（2b）の表層部に硬
質粒子が広範に分布浸透することにより、その硬度は著
しく高まる。According to the present invention as well, the hard particles are prevented from settling at the boundary with the base material, and the hardness is significantly increased because the hard particles are widely distributed and infiltrated into the surface layer of the valve face (2b).
本発明は、上記実施例に限定されるものではなく、種
々の態様をとりうる。The present invention is not limited to the above-described embodiments, and can take various aspects.
例えば、トーチ（12）（13）を、必ずしも、互いに18
0゜異ならせて配置する要はなく、第１層目の肉盛部全
体が第２層目肉盛り用トーチ（13）により、再溶融され
ない位置であれば、それらを適宜の位置に配設してもよ
い。For example, torches (12) and (13)
There is no need to dispose them differently, and if the entire first-layer buildup portion is not re-melted by the second-layer buildup torch (13), they are placed at appropriate positions. May be.
本発明の方法に用いるベース材料は、上記ステライト
（８）の代わりに、安価なFe基やNi基の耐熱合金粉末や
ステンレス等の粉末を用いてもよい。As the base material used in the method of the present invention, inexpensive Fe-based or Ni-based heat-resistant alloy powders or powders of stainless steel or the like may be used instead of the stellite (8).
また、硬質粒子（10）は、上記炭化クロム（Cr3C2）
の外、NbC、WC、TiC、TaCなどの炭化物、TiN、TaNなど
の窒化物及びAl2O3、ZrO3などの酸化物等を用いてもよ
い。The hard particles (10) are made of the above chromium carbide (Cr 3 C 2 )
In addition, carbides such as NbC, WC, TiC and TaC, nitrides such as TiN and TaN, and oxides such as Al 2 O 3 and ZrO 3 may be used.
本発明の実施に用いる溶接装置は、上記プラズマ溶接
装置の外、酸素−アセチレンガス、TiG、その他の溶接
手段でもよい。The welding apparatus used for carrying out the present invention may be an oxygen-acetylene gas, TiG, or other welding means in addition to the above-described plasma welding apparatus.
本発明は、バルブシートのシート部に肉盛溶接する際
にも適用しうる。The present invention can be applied to overlay welding on a seat portion of a valve seat.
本発明によれば、次のような効果が奏せられる。 According to the present invention, the following effects can be obtained.
（ａ）硬質粒子が母材との境界部に沈降するのが防止さ
れて、肉盛部の表層にのみ大量に分布されるので、弁フ
ェース部等の表面の硬度及び耐摩耗性は著しく高まる。(A) Since the hard particles are prevented from settling at the boundary with the base material and are distributed in large amounts only on the surface layer of the overlay, the hardness and wear resistance of the surface of the valve face and the like are significantly increased. .
（ｂ）連続して２回に亘って肉盛りを施すため、弁フェ
ース部には、第２図に示すように、第１層目の肉盛りと
第２層目の肉盛りとの２層からなる肉盛部が形成され、
かつ第２層目の肉盛りを施す際において、盛金材料の中
の炭化クロムや炭化ニオブ等の高比重かつ融点の高い粉
末が、母材との境界部、すなわち環状凹溝付近に沈降す
るのが防止されるので、弁フェース部の表層部に、炭化
物が効果的に析出して、その硬度は、著しく高められ
る。(B) Since the buildup is performed twice consecutively, the valve face portion has two layers of the first buildup and the second buildup as shown in FIG. The build-up part consisting of
In addition, when the second-layer overlay is formed, powder having a high specific gravity and a high melting point, such as chromium carbide or niobium carbide, in the embankment material settles at the boundary with the base material, that is, in the vicinity of the annular groove. Therefore, carbide is effectively deposited on the surface layer of the valve face, and the hardness thereof is significantly increased.
（ｃ）盛金材料を２分して、１周当たりの供給量を減ら
したことにより、盛金材料の溶融性及び湯流れ性は高ま
り、従って、盛金材料に、融点の高いトリバロイをベー
スとした複合盛金材料を用いた際でも、母材への溶着性
が損なわれる恐れはなく、ピンホール等の内部欠陥や冷
却収縮時における割れ等が防止される。(C) By reducing the amount of supply per round by dividing the embankment material into two, the meltability and flowability of the embankment material are improved, and therefore, the base material is made of tribaloy having a high melting point. Even when the composite metal material is used, the weldability to the base material is not impaired, and internal defects such as pinholes and cracks during cooling shrinkage are prevented.
（ｄ）第２層目の肉盛り時において、第１層目の肉盛り
部の表層が加熱再溶融されるので、熱ひずみや残留応力
の発生するのが防止されるとともに、徐冷効果により、
冷却収縮時において肉盛部が割れるなど、不良品の発生
率が極めて少なくなる。(D) At the time of the second layer overlaying, the surface layer of the first layer overlaying portion is heated and re-melted, so that the occurrence of thermal strain and residual stress is prevented and the slow cooling effect is provided. ,
The rate of occurrence of defective products such as cracking of the build-up portion during cooling shrinkage is extremely reduced.
第１図は、本発明の方法の一実施例を示す概略説明図で
ある。 第２図は、肉盛りが施されたエンジンバルブの弁フェー
ス部の要部の拡大縦断側面図である。 第３図は、従来の肉盛溶接方法を示す概略説明図であ
る。 （１）回転台 （２）エンジンバルブ （2a）傘部 （2b）弁フェース部 （2c）環状凹溝 （３）トーチ （４）プラズマアーク （８）ベース材料（盛金材料） （９）（11）肉盛り （10）硬質粒子（盛金材料） （12）第１層目肉盛り用トーチ （13）第２層目肉盛り用トーチ （14）（15）プラズマアークFIG. 1 is a schematic explanatory view showing one embodiment of the method of the present invention. FIG. 2 is an enlarged vertical cross-sectional side view of a main part of a valve face portion of the engine valve on which a build-up is performed. FIG. 3 is a schematic explanatory view showing a conventional overlay welding method. (1) Turntable (2) Engine valve (2a) Head (2b) Valve face (2c) Annular groove (3) Torch (4) Plasma arc (8) Base material (filling material) (9) ( 11) Overlay (10) Hard particles (fill material) (12) Torch for first layer overlay (13) Torch for second layer overlay (14) (15) Plasma arc
Claims (2)
れた環状凹溝に、母材と異なる盛金材料を肉盛溶接する
に際し、エンジンバルブをその軸線まわりに回転させつ
つ、前記軸線に対してほぼ対称的に配置された少なくと
も２つのトーチを備える肉盛溶接装置における一方のト
ーチにベース材料のみを供給して、前記環状凹溝内に、
予定の肉盛厚さよりも薄肉の第１層目の肉盛溶接を施し
つつ、肉盛溶接装置における他方のトーチに硬質粒子を
供給して、前記第１層目の肉盛りの上面に、肉盛全体の
厚さが予定の厚さとなるように、第２層目の肉盛溶接を
施すことを特徴とするエンジンバルブへの盛金材料の肉
盛溶接方法。When an overlay material is welded to an annular groove formed in a valve face portion of an engine valve or the like, the engine valve is rotated around its axis while rotating the engine valve around its axis. And supplying only the base material to one of the torches in the overlay welding apparatus having at least two torches arranged substantially symmetrically in the annular groove,
The hard particles are supplied to the other torch in the build-up welding apparatus while performing the build-up welding of the first layer thinner than the expected build-up thickness, and the upper surface of the build-up of the first layer is A method for overlay welding of an overlay material to an engine valve, wherein the overlay welding of the second layer is performed so that the thickness of the entire overlay becomes a predetermined thickness.
れた環状凹溝に、母材と異なる盛金材料を肉盛溶接する
に際し、前記環状凹溝にベース材料のみを肉盛溶接した
のち、ベース材料が未硬化の状態において、その上面に
ベース材料よりも高硬度の硬質粒子を供給することによ
り、硬質粒子をベース材料の表層部に分布させることを
特徴とするエンジンバルブへの盛金材料の肉盛溶接方
法。2. When overlaying a base metal material different from a base material into an annular groove formed in a valve face portion of an engine valve or the like, only a base material is overlay-welded to the annular groove. In a state where the base material is in an uncured state, hard particles having a hardness higher than that of the base material are supplied to an upper surface of the base material so that the hard particles are distributed on a surface layer of the base material. Overlay welding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196169A JP2796583B2 (en) | 1990-07-26 | 1990-07-26 | Overlay welding method of overlay material to engine valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196169A JP2796583B2 (en) | 1990-07-26 | 1990-07-26 | Overlay welding method of overlay material to engine valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0484670A JPH0484670A (en) | 1992-03-17 |
| JP2796583B2 true JP2796583B2 (en) | 1998-09-10 |
Family
ID=16353356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2196169A Expired - Lifetime JP2796583B2 (en) | 1990-07-26 | 1990-07-26 | Overlay welding method of overlay material to engine valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2796583B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6227618B2 (en) * | 2015-11-30 | 2017-11-08 | Ｊｆｅスチール株式会社 | Method for producing sleeve in molten metal plating bath and method for producing molten metal plated steel sheet |
| CN109531031A (en) * | 2019-01-17 | 2019-03-29 | 安徽海螺川崎装备制造有限公司 | A kind of welding method of hydraulic blocking wheel welding hollow shaft tooling and hollow shaft |
| CN110449680A (en) * | 2019-08-05 | 2019-11-15 | 辽宁三三工业有限公司 | Cutter and welding method in a kind of cutter head of shield machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63165073A (en) * | 1986-12-26 | 1988-07-08 | Nippon Steel Corp | Method for compound padding of engine valve |
-
1990
- 1990-07-26 JP JP2196169A patent/JP2796583B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0484670A (en) | 1992-03-17 |
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