JPH0484670A - Method for build-up welding with build-up material on engine valve or the like - Google Patents
Method for build-up welding with build-up material on engine valve or the likeInfo
- Publication number
- JPH0484670A JPH0484670A JP19616990A JP19616990A JPH0484670A JP H0484670 A JPH0484670 A JP H0484670A JP 19616990 A JP19616990 A JP 19616990A JP 19616990 A JP19616990 A JP 19616990A JP H0484670 A JPH0484670 A JP H0484670A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- layer
- overlay
- welding
- hard particles
- 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
- 239000000463 material Substances 0.000 title claims description 52
- 238000003466 welding Methods 0.000 title claims description 40
- 238000000034 method Methods 0.000 title claims description 12
- 239000002245 particle Substances 0.000 claims description 32
- 239000010410 layer Substances 0.000 claims description 31
- 239000002344 surface layer Substances 0.000 claims description 15
- 239000007769 metal material Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 11
- 229910001347 Stellite Inorganic materials 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 229910003470 tongbaite Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- -1 NbC Chemical class 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- VLZZXGOEDAYHOI-UHFFFAOYSA-N ethyllead Chemical compound CC[Pb] VLZZXGOEDAYHOI-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (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〕
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。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides, for example, a valve face portion of an engine valve, etc.
The present invention relates to a method of overlay welding a hard metal material having high wear resistance.
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、母材単体の強度では著しく
摩耗する。そのため、弁フェース部に、硬質かつ高耐摩
耗性の盛金材料、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。The valve face portion of an engine valve is subject to repeated high load and high cycle loads, so it will wear out significantly if the strength of the base material alone is not sufficient. Therefore, a hard and highly wear-resistant overlay material, such as alloy powder such as stellite, is overlay-welded to the valve face portion to improve wear resistance.
このような肉盛溶接は、通常、第４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 overlay welding is normally performed using a plasma welding device as shown in FIG.
すなわち、はぼ３０°傾斜させた回転台（１，）」：に
、エンジンバルブ（２）の傘部（２ａ）を載置して、一
定方向に回転させつつ、弁フェース部（２ｂ）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、かつ同時に、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、アーク熱に
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１周させると、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。That is, the umbrella part (2a) of the engine valve (2) is placed on the rotary table (1,) tilted at approximately 30 degrees, and while rotating in a constant direction, the valve face part (2b) is rotated. Plasma arc (4) from the tip of the torch (3) facing directly above
While simultaneously supplying powdered stellite (5) from the nozzle at the tip of the torch (3) and melting the stellite (5) and the surface layer of the valve face portion (2b) by arc heat, When the umbrella portion (2a) is rotated once, the build-up (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ｐｇ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 higher speeds, higher revolutions, higher loads, and higher outputs, such as by being equipped with superchargers or adopting multi-valve mechanisms. There is a tendency to use fuels that do not contain substances that have a lubricating effect (for example, pg ethyl lead, etc.).
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。Furthermore, diesel engines are required to have excellent corrosion resistance and oxidation resistance due to 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、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が、上記ステラ
イト単体の盛金材料を、エンジンバルブの弁フェース部
やバルブシートのシー１〜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 high-temperature strength and high-temperature corrosion resistance, as well as high wear resistance. If only overlay welding is done on the valve face or seam 1~ part of the valve seat,
It is difficult to obtain the required high-temperature properties, wear resistance, etc.
そこで本願出願人は、上記ステライ１〜に代わる高耐摩
耗性を有する盛金材料として、Ｃｏ基基合金らなるステ
ライト粉末をベース材料とし、これ３〜
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Ｓ月３０日
に出願している（特願平２−１３８４４８号）。Therefore, the applicant of the present application has developed Stellite powder made of a Co-based alloy as a base material to replace Stellite 1~ with high wear resistance, and added hard particles of high hardness and high melting point to Stellite powder, such as We developed a composite metal material containing carbide powder and filed an application on S. 30, 1990 (Japanese Patent Application No. 138448/1990).
」二記複合盛余材料は、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、肉盛部の硬度は比例的に高まる
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 described in Section 2 has the characteristic that as the addition ratio of carbide powder increases, the ratio of precipitated carbide in the base material increases, and the hardness of the overlay part increases proportionally. However, the following problems 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硬質で、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。In other words, when the above-mentioned composite overlay material is welded by simply rotating the workpiece once and overlaying the required amount at once in the same way as the above-mentioned stellite alone, a carbide-based powder that is harder than stellite and has a higher melting point is produced. may settle and accumulate at the interface with the base metal in an unmolten or semi-molten state, and a precipitated hardened layer of carbides may not be formed on the surface layer of the valve face where wear resistance is most needed.
本発明は、」１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 problem described in item 1, and its purpose is to increase the hardness of the surface layer by distributing hard particles such as carbide in the surface layer of the built-up portion, thereby increasing the durability. An object of the present invention is to provide a method for overlaying metal material onto an engine valve or the like, in which a valve face portion having excellent wear resistance is formed.
上記目的は、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、母相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、その上面にベース材料よりも高硬度の硬質粒子を
供給しつつ加熱することにより、硬質粒子をベース材料
の表層部に分布させることにより達成することができる
。The above purpose is to weld only the base material to the annular groove formed in the valve face of an engine valve when overlaying a metal material different from the base material to the annular groove formed on the valve face of an engine valve. This can be achieved by distributing the hard particles in the surface layer of the base material by heating while supplying hard particles having a higher hardness than the base material to the upper surface.
より具体的には、エンジンバルブ等を一定方向に回転さ
せつつ、第１層目において、適宜の肉盛溶接装置におけ
るトーチにベース材料のみを供給して、環状凹溝に第１
層目の肉盛溶接を施したのち、第２層目において、前記
第１層目の上面に硬質粒子を供給して、第２層目の肉盛
溶接を施すか又は、エンジンバルブ等を一定方向に回転
させつつ、少なくとも２つの１−−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
、環状凹溝に第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１−−チに硬質粒子を供給して、前
記第１層目の−Ｆ面に第２層目の肉盛溶接を施すように
してもよい。More specifically, while rotating the engine valve etc. in a fixed direction, only the base material is supplied to the torch of an appropriate overlay welding device in the first layer, and the first layer is supplied to the annular groove.
After overlay welding of the layer, in the second layer, hard particles are supplied to the upper surface of the first layer to perform overlay welding of the second layer, or engine valves etc. are fixed at a certain level. While rotating in the direction, only the base material is supplied to one torch of the overlay welding device equipped with at least two 1--chies, and the first layer of overlay welding is performed on the annular groove. Hard particles may be supplied to the other one of the welding devices to perform overlay welding of the second layer on the -F surface of the first layer.
さらに、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ことによっ
ても達成することができる。Furthermore, when overlaying a metal material different from the base material into an annular groove formed on the valve face of an engine valve, only the base material is overlay welded to the annular groove, and then the base material is By supplying hard particles with higher hardness than the base material to the upper surface in the uncured state,
This can also be achieved by distributing hard particles in 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 overlay welded 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 part is significantly increased.
以下、本発明の実施例を、図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
なお、第４図に示す従来例と同様の部材には、同じ符号
を付して説明する。Note that the same members as in the conventional example shown in FIG. 4 will be described with the same reference numerals.
第１図（Ａ）及び（Ｂ）は、請求項（１）及び（２）記
載の発明の溶接要領を略示するものである。FIGS. 1(A) and 1(B) schematically illustrate the welding procedure of the invention as claimed in claims (1) and (2).
まず第１図（Ａ）に示すように、弁フェース部（２ｂ）
に環状凹溝（２ｃ）が形成されたエンジンバルブ（２）
の傘部（２ａ）を、前述した従来例と同様のプラズマ溶
接装置の回転台（１）に載置して、平面視反時計方向に
回転させつつ、弁フェース部（２ｂ）の直」二に臨ませ
たトーチ（３）の先端より、不活性シールドガスととも
にプラズマアーク（４）を発生させ、かつ同時に、粉末
状のベース材料（８）、すなわち、例えばＣｏ基からな
るステライト等の盛金材料のみを供給し、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, as shown in Fig. 1(A), the valve face part (2b)
Engine valve (2) with an annular groove (2c) formed therein
The umbrella part (2a) of the valve face part (2b) is placed on the turntable (1) of a plasma welding apparatus similar to the conventional example described above, and while being rotated counterclockwise in plan view, the valve face part (2b) is A plasma arc (4) is generated together with an inert shielding gas from the tip of the torch (3), which is facing toward Only the material is supplied, and while the engine valve (2) makes one revolution, the annular groove (2c
) Apply the first layer of overlay (9) on the entire surface.
ついで、第１図（Ｂ）に示すように、エンジンバルブ（
２）の第２周目において、ベース材料供給ホッパ（図示
略）よりのベース材料（８）の１−−チ（３）への供給
を停止するとともに、引き続き発生させたプラズマアー
ク（４）に向けて、′別の供給ホッパ（図示略）より、
ベース材料（８）よりも高硬度でかつ融点の高い、例え
ば炭化クロム（Ｃｒ３Ｃ２）等の炭化物系の硬質粒子（
１０）を供給し、第１層目の肉盛り（９）の表層を溶融
させつつ、その上面に第２層目の肉盛り（１１）を施す
。Next, as shown in Figure 1 (B), the engine valve (
In the second round of step 2), the supply of the base material (8) from the base material supply hopper (not shown) to 1--chi (3) is stopped, and the plasma arc (4) that was subsequently generated is From another supply hopper (not shown),
Hard particles of carbide, such as chromium carbide (Cr3C2), which have higher hardness and melting point than the base material (8) (
10) is supplied, and while the surface layer of the first layer build-up (9) is melted, the second layer build-up (11) is applied to the upper surface thereof.
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）を肉盛溶接すると、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（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（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
（１０）による炭化物が効果的に析出し、あるいは、硬
質粒子（ＪＯ）が半溶融状態のまま分布して、その部分
の硬度を著しく高めうる。In this way, when only the base material (8) is welded in the first round and the hard particles (10) are welded in the second round, the valve face part (2b) has a shape as shown in Fig. 2. , when a build-up part consisting of two layers, the build-up (9) of the first turn and the build-up (11) of the second turn, is formed, and when applying the build-up of the second layer (11). In this case, since the hard particles (10) are prevented from settling near the boundary with the base material, that is, near the annular groove (2c), the hard particles (10) are By effectively precipitating carbides, or by distributing hard particles (JO) in a semi-molten state, the hardness of the part can be significantly increased.
次に、請求項（１）及び（３）記載の発明の溶接要領を
、第３図に基づいて説明する。Next, welding procedures according to the invention described in claims (1) and (3) will be explained based on FIG. 3.
この発明は、はぼ水平をなす回転台（１） １．に、エ
ンジンバルブ（２）を垂直に載置し、その両側に互いに
ほぼ１８０°位置を異ならせて設けた、第１層目肉盛用
のトーチ（１２）と、第２層目肉盛用ト−チ（］］載と
の２トーチにより、肉盛溶接を行なうものである。This invention provides a nearly horizontal rotating table (1) 1. The engine valve (2) is mounted vertically, and torches (12) for the first layer welding and torches (12) for the second layer welding are provided on both sides at approximately 180° different positions from each other. Overlay welding is carried out using two torches: one (1) and one (1).
すなわち、まず前述した発明と同様に、回転台（１）に
よりエンジンバルブ（２）を反時計方向に回転させつつ
、トーチ（１２）の先端よりプラズマアーク（１４）を
発生させると同時に、図示しないベース材供給用ホッパ
より、前述したと同様のベース材料（８）を供給して、
環状凹溝（２ｃ）に第１層目の肉盛り（９）を施す。That is, first, like the invention described above, while rotating the engine valve (2) counterclockwise using the rotary table (1), a plasma arc (14) is generated from the tip of the torch (12), and at the same time The same base material (8) as described above is supplied from the base material supply hopper,
The first layer of overlay (9) is applied to the annular groove (2c).
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、トーチ（１３）の直下ま
で移動したとき、トーチ（］］載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
ッパより硬質粒子（１０）を供給して、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。Next, when the engine valve (2) rotates about half a turn and the tip of the built-up part (9) of the first layer moves to just below the torch (13), a plasma arc is emitted from the tip of the torch (]). At the same time as generating (15), hard particles (10) are supplied from another hopper (not shown) to melt the surface layer of the first layer build-up (9) that rotates sequentially, and to apply it to the upper surface. A second layer of build-up (11) is applied to obtain a predetermined build-up 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、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、かつ。Next, the engine valve (2) rotates once and the first layer of build-up (9) is applied to the front surface of the annular groove (2c), and at the same time, the plasma arc (14) from the torch (12) is applied.
) and the supply of base material (8) is stopped, and.
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）
が施されたと同時に、トーチ（］３）よりのプラズマア
ーク（１５）と硬質粒子の（１０）の供給を停止させる
。Furthermore, the engine valve (2) rotates half a turn, and the second layer build-up (11) is placed on the entire top surface of the first layer build-up (9).
At the same time, the supply of plasma arc (15) and hard particles (10) from the torch (3) is stopped.
この２ト一チ式の発明によっても、前述した発明と同様
の作用効果を奏することができるとともに、ワークを１
回転半させるだけで肉盛溶接が完了する利点がある。This two-to-one type invention can also achieve the same effects as the above-mentioned invention, and can also
It has the advantage that overlay welding can be completed by just rotating it half a turn.
請求項（４）記載の発明は、図示を省略しであるが、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
り実施しうる。Although not shown, the invention as claimed in claim (4) can be carried out by providing a supply means for supplying hard particles near the torch (3) in the overlay welding apparatus shown in FIG. I can do it.
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は込ませる。That is, immediately after overlay welding of the base material, while the surface layer of the overlay part is still in a semi-molten state without hardening, the hard particles supplied from the hard particle supply means are applied to the overlay part of the base material. Spray it on the surface layer and let it melt.
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 this invention, the hard particles are prevented from settling at the boundary with the base material, and the hard particles are widely distributed and permeated into the surface layer of the valve face portion (2b), thereby significantly increasing its hardness.
本発明は、上記実施例に限定されるものではなく、種々
の態様をとりつる。The present invention is not limited to the above embodiments, but includes various embodiments.
例えば、２ト一チ式の場合において、トーチ（１２）（
１３）を、互いに１８０°異ならせて配置しであるが、
第１層目の肉盛郡全体がトーチ（１３）により、再溶融
されない位置であれば、それらを適宜位置に配設しても
よい。For example, in the case of a two-torch type, the torch (12) (
13) are arranged 180° different from each other,
They may be placed at appropriate positions as long as the entire overlay group of the first layer is not remelted by the torch (13).
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。The base material used in the method of the present invention is the above-mentioned stellite (
Instead of 8), an inexpensive Fe-based or Ni-based heat-resistant alloy powder, stainless steel powder, or the like may be used.
また、硬質粒子（１０）は、」１記炭化クロム（Ｃｒ３
Ｃ２）の外、ＮｂＣ，ＷＣ，ＴｊＣ，ＴａＣなどの炭化
物、Ｔｉ Ｎ、ＴａＮなとの窒化物及び〜１１
Ａｌ２Ｏ，、ＺｒＯ，などの酸化物等を用いてもよい。Further, the hard particles (10) are chromium carbide (Cr3
In addition to C2), carbides such as NbC, WC, TjC, TaC, nitrides such as TiN, TaN, and oxides such as ~11Al2O, ZrO, etc. 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。In addition to the plasma welding apparatus described above, the welding apparatus used to carry out the present invention may be oxygen-acetylene gas, TiG, or other welding means.
本発明は、バルブシー１〜のシート部に肉盛溶接する際
にも適用しうる。The present invention can also be applied to overlay welding on the seat portions of the valve seats 1 to 1.
本発明によれば、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。According to the present invention, hard particles are prevented from settling at the boundary with the base material, and are distributed in large quantities only on the surface layer of the built-up part, so that the hardness and wear resistance of the surface of the valve face etc. increases significantly.
第１図（Ａ）及び（Ｂ）は、請求項（１）及び（２）記
載の本発明の方法の一実施例を示し、（Ａ、 ’）はベ
ース材料の肉盛溶接中、（Ｂ）は硬質粒子の肉盛溶接中
の概略説明図。
第２図は、第１図（Ｂ）におけるＩＩ−Ｕ線に沿う要部
の拡大縦断側面図、
第３図は、請求項（１）及び（３）記載の本発明の方法
の一実施例を示す概略説明図、
第４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（盛金材料）
（９）（１１）肉盛り （１０）硬質粒子（盛金
材料）（１２） （１３） トーチ
（１４）（１５）プラズマアーク
第１図
第２図
Ｃ
第３図
○1 (A) and (B) show an embodiment of the method of the invention according to claims (1) and (2), in which (A,') is during overlay welding of the base material, (B) ) is a schematic illustration of hard particle build-up welding. FIG. 2 is an enlarged longitudinal sectional side view of the main part along the line II-U in FIG. FIG. 4 is a schematic explanatory diagram showing a conventional overlay welding method. (1) Turntable (2) Engine valve (2a)
Umbrella part (2b) Valve face part (2c) Annular groove (3) Torch (4) Plasma arc (8) Base material (metallic material) (9) (11) Overlay (10) Hard particles (metallic material ) (12) (13) Torch (14) (15) Plasma arc Figure 1 Figure 2 C Figure 3 ○
Claims (4)
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、
その上面にベース材料よりも高硬度の硬質粒子を供給し
つつ加熱することにより、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等への
盛金材料の肉盛溶接方法。(1) When overlaying a metal material different from the base material to an annular groove formed in the valve face of an engine valve, after overlaying only the base material to the annular groove,
A method for welding overlay material to engine valves, etc., characterized by distributing hard particles to the surface layer of the base material by supplying hard particles with higher hardness than the base material to the upper surface and heating the base material. .
１周目において、適宜の肉盛溶接装置におけるトーチに
ベース材料のみを供給して、環状凹溝に第１層目の肉盛
溶接を施したのち、第２周目において、前記第１層目の
上面に硬質粒子を供給して、第２層目の肉盛溶接を施す
ことを特徴とする請求項（１）記載のエンジンバルブ等
への盛金材料の肉盛溶接方法。(2) While rotating the engine valve, etc. in a constant direction, during the first round, only the base material is supplied to the torch of an appropriate overlay welding device, and the first layer of overlay welding is performed in the annular groove. The engine valve or the like according to claim 1, wherein, in a second round, hard particles are supplied to the upper surface of the first layer to perform overlay welding of the second layer. Method of overlaying welding of overlay material to.
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、環状凹溝に第
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層目の上面
に第２層目の肉盛溶接を施すことを特徴とする請求項（
１）記載のエンジンバルブ等への盛金材料の肉盛溶接方
法。(3) While rotating the engine valve, etc. in a fixed direction, only the base material is supplied to one torch in an overlay welding device equipped with at least two torches, and the first layer of overlay welding is performed on the annular groove. Claim: 1. While performing overlay welding, hard particles are supplied to the other torch in the overlay welding device to perform overlay welding of the second layer on the upper surface of the first layer.
1) Method for welding overlay material to engine valves, etc. as described above.
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等への盛金材料の肉盛溶接方法。(4) When overlaying a metal material different from the base material to an annular groove formed in the valve face of an engine valve, after overlaying only the base material to the annular groove,
Molding for engine valves, etc. characterized by distributing hard particles on the surface layer of the base material by supplying hard particles with higher hardness than the base material to the upper surface of the base material in an uncured state. Overlay welding method for materials.
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 true JPH0484670A (en) | 1992-03-17 |
| JP2796583B2 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017101273A (en) * | 2015-11-30 | 2017-06-08 | Ｊｆｅスチール株式会社 | Roll shaft member in molten metal plating bath, method for producing the same, 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 |
| CN116921808A (en) * | 2023-08-30 | 2023-10-24 | 重庆跃进机械厂有限公司 | Surfacing method of sealing surface of valve of internal combustion engine and valve of internal combustion engine |
| CN119407296A (en) * | 2024-12-16 | 2025-02-11 | 南京航空航天大学 | A stress control method for plasma surfacing of ultra-high hardness materials |
Citations (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
Patent Citations (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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017101273A (en) * | 2015-11-30 | 2017-06-08 | Ｊｆｅスチール株式会社 | Roll shaft member in molten metal plating bath, method for producing the same, 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 |
| CN116921808A (en) * | 2023-08-30 | 2023-10-24 | 重庆跃进机械厂有限公司 | Surfacing method of sealing surface of valve of internal combustion engine and valve of internal combustion engine |
| CN119407296A (en) * | 2024-12-16 | 2025-02-11 | 南京航空航天大学 | A stress control method for plasma surfacing of ultra-high hardness materials |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2796583B2 (en) | 1998-09-10 |
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