JPH0455065A - Method for build-up welding of filling material to engine valve or the like - Google Patents
Method for build-up welding of filling material to engine valve or the likeInfo
- Publication number
- JPH0455065A JPH0455065A JP16556990A JP16556990A JPH0455065A JP H0455065 A JPH0455065 A JP H0455065A JP 16556990 A JP16556990 A JP 16556990A JP 16556990 A JP16556990 A JP 16556990A JP H0455065 A JPH0455065 A JP H0455065A
- Authority
- JP
- Japan
- Prior art keywords
- annular groove
- torch
- black skin
- valve
- engine 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 22
- 239000007769 metal material Substances 0.000 claims description 8
- 238000005242 forging Methods 0.000 abstract description 7
- 238000003754 machining Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 23
- 238000005488 sandblasting Methods 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 229910001347 Stellite Inorganic materials 0.000 description 2
- 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 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000316887 Saissetia oleae Species 0.000 description 1
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 201000001441 melanoma Diseases 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は１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 1, 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.
この場合、第３図〜第６図に示すように、鍛造工程を経
たエンジンバルブ（以下ワークという）（１）の弁フェ
ース部（ｌａ）に、まず第４図示のような環状凹溝（２
）を形成したのち、第５図示のように、この環状凹溝（
２）に上記した盛金材料をプラズマ溶接等により肉盛り
（３）を施し、最後に、肉盛り（３）部を機械加工によ
り、第６図のようなテーバ状のフェース面（１ｂ）に仕
上げている。In this case, as shown in FIGS. 3 to 6, first, an annular groove (2) as shown in FIG.
), as shown in Figure 5, this annular groove (
In step 2), build-up (3) is applied to the above-mentioned overlay material by plasma welding, etc., and finally, the build-up (3) is machined to form a tapered face surface (1b) as shown in Fig. 6. I'm finishing it.
上記環状凹溝（２）は、通常、機械加工により形成され
るが、機械加工では、大掛がすな前工程を要することに
加えて、材料の歩留まりが悪いなどの問題があるため、
最近では、上記環状凹溝（２）を、鍛造工程において、
エンジンバルブ（１）を成形するのと同時に形成するこ
とが行われている。The annular groove (2) is usually formed by machining, but machining requires extensive pre-processing and has problems such as poor material yield.
Recently, the annular groove (2) is formed in the forging process.
Forming is performed at the same time as molding the engine valve (1).
このような鍛造により環状凹溝（２）を形成すると、そ
の表面は、酸化したスケールや黒皮等により覆われ、こ
の状態のまま肉盛溶接すると、盛金材料の溶着性が損な
われて、内部欠陥が発生したり、組織が不安定となった
りするので、黒皮層を除去する必要がある。When the annular groove (2) is formed by such forging, its surface will be covered with oxidized scale, black scale, etc., and if overlay welding is performed in this state, the weldability of the overlay material will be impaired. It is necessary to remove the cortical layer because internal defects may occur or the tissue may become unstable.
従来、上記黒皮層は、旋削盤やサンドブラスト装置によ
り除去していた。Conventionally, the black skin layer has been removed using a lathe or a sandblasting device.
黒皮層を、旋削盤やサンドブラスト装置により除去する
従来の方法では、鍛造工程と肉盛工程との間に、余分な
前工程を要することとなり、その分多くの作業時間を費
やして生産性が低下するばかりでなく、それ専用の旋削
盤やサンドブラスト装置を設置したり、作業者を確保し
たりしなければならないので、設備費や人件費が嵩む。The conventional method of removing the black skin layer using a turning machine or sandblasting equipment requires an extra pre-process between the forging process and the overlay process, which takes up more work time and reduces productivity. Not only that, but it is also necessary to install a dedicated turning machine and sandblasting equipment, and to secure workers, which increases equipment and personnel costs.
本発明は、上記問題点を解決するためになされたもので
、黒皮層等を除去するための前工程を廃止することによ
り、設備費や人件費の削減を計るとともに、生産性を大
幅に高めうるようにした、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を目的としている。The present invention was made to solve the above problems, and by eliminating the pre-process for removing the black skin layer, etc., it reduces equipment costs and personnel costs, and significantly increases productivity. It is an object of the present invention to provide a method for overlaying a metal overlay material onto an engine valve or the like in a manner such that the overlay material is applied to an engine valve or the like.
°上記目的は、エンジンバルブ（１）の弁フェース部（
１ａ）等に形成された環状凹溝（２）に、母材と異なる
盛金材料（７）を肉盛溶接するに際し、前記エンジンバ
ルブ（１）等を一定方向に回転させつつ、第１開目にお
いて、適宜の肉盛溶接装置（Ｗ）におけるトーチ（５）
より発生させた火炎（６）により、前記環状凹溝（２）
の表面の黒皮層等を除去し、第２肩口において、前記ト
ーチ（５）に盛金材料（７）を供給して、環状凹溝（２
）の全面に肉盛溶接することにより達成することができ
る。°The above purpose is to improve the valve face of the engine valve (1) (
1a), etc., when overlaying a metal material (7) different from the base material into the annular groove (2), the engine valve (1) etc. is rotated in a fixed direction while the first opening is welded. In the eye, a torch (5) in a suitable overlay welding device (W)
The flame (6) generated by the annular groove (2)
The black skin layer etc. on the surface of
) can be achieved by overlay welding on the entire surface.
また、上記目的は、エンジンバルブ（１）等を一定方向
に回転させつつ、少なくとも２つのトーチ（５）（９）
を備える適宜の肉盛溶接装置（Ｗ）における一方のトー
チ（９）より発生させた火炎（１０）により、前記環状
凹溝（２）の表面の黒皮層等を除去しつつ、肉盛溶接装
置における他方のトーチ（５）に盛金材料（７）を供給
して、黒皮層等の除去された環状凹溝（２）の全面に順
次肉盛溶接することによっても達成される。Further, the above purpose is to rotate at least two torches (5) (9) while rotating the engine valve (1) etc. in a certain direction.
While removing the black skin layer etc. on the surface of the annular groove (2) by the flame (10) generated from one torch (9) in the appropriate overlay welding apparatus (W) equipped with This can also be achieved by supplying the overlay material (7) to the other torch (5) and sequentially overlaying the entire surface of the annular groove (2) from which the black skin layer and the like have been removed.
環状凹溝（２）の黒皮層等を、肉盛溶接工程時に除去す
ることにより、旋削盤等の機械を使用した前工程を廃止
することができ、生産性は著しく高まる。By removing the black skin layer of the annular groove (2) during the overlay welding process, it is possible to eliminate the previous process using a machine such as a turning machine, and productivity is significantly increased.
以下５本発明の実施例を５図面に基づいて説明する。 Hereinafter, five embodiments of the present invention will be described based on the five drawings.
第１図（Ａ）及び（Ｂ）は、請求項（１）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 claim (1).
まず、第１図（Ａ）に示すように、プラズマ溶接装置（
Ｗ）におけるほぼ３０°傾斜させた回転台（４）上に、
鍛造により成形された。弁フェース部（１ａ）に環状凹
溝（２）を備えるワーク（エンジンバルブ）（１）の傘
部（ｌｃ）を載置して９回転台（４）の回転により一定
方向に回転させつつ、弁フェース部（ｌａ）の直上に臨
ませたトーチ（５）の先端より、不活性シールドガス（
図示略）を噴射しながら、プラズマアーク（火炎）（６
）のみを発生させ、環状凹溝（２）の表層に形成された
。鍛造時の酸化スケールや黒皮層等を、アーク熱により
焼失又は剥離させる。First, as shown in Figure 1 (A), a plasma welding device (
On the turntable (4) inclined at approximately 30° at W),
Molded by forging. The umbrella part (lc) of the workpiece (engine valve) (1) having the annular groove (2) on the valve face part (1a) is placed and rotated in a fixed direction by the rotation of the 9-turn table (4), Inert shielding gas (
While injecting a plasma arc (flame) (not shown),
) was formed on the surface layer of the annular groove (2). Oxidized scale, black skin layer, etc. during forging are burned away or peeled off by arc heat.
この際のプラズマアーク（６）の温度は、母材の表層の
みが若干溶融しうる程度とするのがよい。The temperature of the plasma arc (6) at this time is preferably such that only the surface layer of the base material can be slightly melted.
ついで、ワーク（１）が１回転して、環状凹溝（２）内
の黒皮層等が全て除去されたのち、第１図（Ｂ）に示す
ように、引き続きワーク（１）を１回転させるとともに
、プラズマアーク（６）を発生させ、かつ同時に、トー
チ（５）の先端よりステライト等の盛金材料（７）をプ
ラズマアーク（６）に向けて供給し、アーク熱により盛
合材料（７）と環状凹溝（２）を溶融させて、環状凹溝
（２）の全面に肉盛り（８）を施す。Next, the workpiece (1) is rotated once to remove all the black skin layer etc. in the annular groove (2), and then the workpiece (1) is rotated once again as shown in FIG. 1(B). At the same time, a plasma arc (6) is generated, and at the same time, the overlay material (7) such as stellite is supplied from the tip of the torch (5) toward the plasma arc (6), and the overlay material (7) is heated by the arc heat. The annular groove (2) is melted and a build-up (8) is applied to the entire surface of the annular groove (2).
この肉盛溶接時においては、プラズマアーク（６）の温
度を、母材の融点と同程度かそれ以上に高める。During this overlay welding, the temperature of the plasma arc (6) is raised to about the same level as or higher than the melting point of the base material.
次に、請求項（２）記載の発明の溶接要領を、第２図に
基づいて説明する。Next, the welding procedure of the invention according to claim (2) will be explained based on FIG. 2.
この発明は、前述したと同様の肉盛り用のトーチ（５）
と、その反対側に、はぼ１８０°位置をずらして設けた
、黒皮層等を除去するトーチ（９）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 torch (5) for filling meat similar to the one described above.
Overlay welding is performed using two torches: a torch (9) for removing the black skin layer, etc., and a torch (9) provided on the opposite side, shifted by 180 degrees.
すなわち、まず前述の発明と同様に、回転台（４）によ
りワーク（１）を一定方向に回転させつつ、トーチ（９
）よりプラズマアーク（１０）のみを発生させて、環状
凹溝（２）内の黒皮層等を除去する。That is, first, as in the above-mentioned invention, while rotating the workpiece (1) in a fixed direction by the rotary table (4), the torch (9) is rotated.
), only the plasma arc (10) is generated to remove the black skin layer and the like within the annular groove (2).
ついで、ワーク（１）が約半回転して、黒皮層等の除去
された環状凹溝（２）が、肉盛り用のトーチ（５）の直
下まで移動したとき、トーチ（５）の先端よりプラズマ
アーク（６）を発生させると同時に、盛金材料（７）を
供給して、順次黒度層等が除去されて回転してくる環状
凹溝（２）に肉盛り（８）を施す。Next, when the workpiece (1) rotates about half a turn and the annular groove (2) from which the black skin layer has been removed moves to just below the overlaying torch (5), it is removed from the tip of the torch (5). At the same time as the plasma arc (6) is generated, the overlay material (7) is supplied to apply overlay (8) to the rotating annular groove (2) from which the blackness layer and the like are sequentially removed.
ついで、ワーク（１）が１回転して、環状凹溝（２）内
の黒皮層等が全周に亘って除去されたと同時に、トーチ
（９）よりのプラズマアーク（１０）を停止し、かつト
ーチ（５）により、引き続き肉盛り（８）を続行する。Then, the workpiece (1) rotates once and the black skin layer etc. in the annular groove (2) is removed from the entire circumference, and at the same time, the plasma arc (10) from the torch (9) is stopped, and Continue filling the meat (8) with the torch (5).
ワーク（１）が１回転して、環状凹溝（２）の全周の黒
皮層等が除去された時点では、環状凹溝（２）の約半周
に肉盛溶接されたのみであるので、引き続きワーク（１
）を約半回転させて、トーチ（５）により、環状凹溝（
２）の残りの半周に肉盛り（８）を施し、全面に肉盛溶
接された直後において、トーチ（５）のプラズマアーク
（６）と盛金材料（７）の供給を停止する。When the workpiece (1) has rotated once and the black skin layer etc. around the entire circumference of the annular groove (2) has been removed, only about half of the circumference of the annular groove (2) has been overlaid welded. Continue working (1
) about half a turn, and use the torch (5) to open the annular groove (
Immediately after overlay (8) is applied to the remaining half circumference of 2), and the entire surface is overlay-welded, the plasma arc (6) of the torch (5) and the supply of the overlay material (7) are stopped.
以上説明した請求項（１）及び（２）記載の発明におい
ては、いずれも黒皮層等を肉盛溶接と同時に除去するた
め、従来のような機械による黒皮層等の除去工程を経る
必要がなく、生産性は著しく高まる。In the inventions described in claims (1) and (2) described above, since the black skin layer, etc. is removed at the same time as the overlay welding, there is no need to go through the process of removing the black skin layer, etc. using a conventional machine. , productivity increases significantly.
また、黒皮層等が除去された後のワーク（１）は、傘部
（１ｃ）全体がアーク熱により予熱されているため、そ
の後の肉盛溶接時において、温度上昇が緩やかとなって
、熱ひずみの発生するのが防止されるとともに、盛金材
料（７）の湯流れ性が良好となるので：母材に対する溶
着性が向上し、ピンホールや未溶着等、内部欠陥の発生
率が極めて少なくなる。In addition, since the entire umbrella part (1c) of the workpiece (1) after the black skin layer, etc. has been removed is preheated by arc heat, the temperature rise is gradual during subsequent overlay welding, and heat is generated. This prevents the occurrence of distortion and improves the flowability of the metal filling material (7): the weldability to the base material is improved, and the incidence of internal defects such as pinholes and unwelded parts is extremely low. It becomes less.
請求項（１）記載の発明は、１つのトーチにより黒皮層
等の除去と肉盛溶接とを行なうので、装置が簡略化する
利点がある。The invention described in claim (1) has the advantage that the apparatus is simplified because the removal of the black skin layer and the overlay welding are performed using one torch.
また、請求項（２）記載の２ト一チ式の発明は、ワーク
を１回転半させるのみで溶接が終了するので１Ｍ求項（
１）記載の発明に比べて生産性は高い。Furthermore, in the two-towel type invention described in claim (2), welding is completed by only rotating the workpiece one and a half rotations, so the 1M claim (
1) Productivity is higher than the invention described above.
なお、請求項（２）記載の発明において、黒皮層等を除
去するトーチ（９）の位置を、肉盛り用トーチ（５）に
対しほぼ１８０＠ずらした反対側としであるが、例えば
それら２つのトーチ（５）（９）を互いに接近させるな
ど、その位置は適宜である。In addition, in the invention described in claim (2), the position of the torch (9) for removing the black skin layer etc. is shifted from the overlaying torch (5) by approximately 180 @ on the opposite side. The positions of the two torches (5) and (9) may be determined as appropriate, such as placing the two torches (5) and (9) close to each other.
本発明方法に用いる肉盛溶接手段は、上記プラズマ溶接
以外に、酸素−アセチレンガスやその他の溶接手段でも
よい。The overlay welding means used in the method of the present invention may be oxygen-acetylene gas or other welding means in addition to the plasma welding described above.
本発明方法は、バルブシートのシート部に肉盛溶接する
際にも適用しつる。The method of the present invention can also be applied to overlay welding on the seat portion of a valve seat.
本発明方法によれば、ワーク（１）の環状凹溝（２）の
黒皮層等を、肉盛溶接工程と同時に除去するようにした
から、従来のような機械による前工程を廃止することが
でき、生産性の向上は勿論のこと、機械設備や人件費等
が削減され、製造コストの低減が図れる。According to the method of the present invention, the black skin layer, etc. of the annular groove (2) of the workpiece (1) is removed at the same time as the overlay welding process, so it is possible to eliminate the conventional pre-process using a machine. This not only improves productivity, but also reduces machinery and equipment, personnel expenses, etc., and reduces manufacturing costs.
第１図（Ａ）及び（Ｂ）は、請求項（１）記載の発明方
法の一実施例を示し、（Ａ）は黒皮層等の除去、（Ｂ）
は肉盛溶接時をそれぞれ示す概略説明図、第２図は、請
求項（２）記載の発明方法の一実施例を示す概略説明図
、
第３図は、ワークの正面図、
第４図は、弁フェース部に環状凹溝を形成した状態を示
す要部の拡大図、
第５図は、同じく肉盛溶接した状態を示す要部の拡大図
、
第６図は、同じく仕上加工を施“した状態を示す要部の
拡大図である。
（１）ワーク（エンジンバルブ）
（１ａ）弁フェース部
（２）環状凹溝
（５）トーチ
（６）プラズマアーク（火炎）
（７）盛金材料
（９）トーチ
（１０）プラズマアーク（火炎）
（Ｗ）プラズマ溶接装置
（１ｃ）傘部
（４）回転台
（８）肉盛り
第２図
第３図
銅４図
第５図
第６図FIGS. 1(A) and 1(B) show an embodiment of the inventive method as claimed in claim (1), in which (A) is the removal of the melanoma layer, etc., and (B) is
2 is a schematic explanatory diagram showing an embodiment of the invention method according to claim (2), FIG. 3 is a front view of the workpiece, and FIG. , an enlarged view of the main part showing a state in which an annular groove is formed on the valve face, Fig. 5 is an enlarged view of the main part showing a state in which overlay welding has also been performed, and Fig. 6 shows a similar finishing process. It is an enlarged view of the main parts showing the state in which the work is done. (1) Workpiece (engine valve) (1a) Valve face part (2) Annular groove (5) Torch (6) Plasma arc (flame) (7) Overlay material (9) Torch (10) Plasma arc (flame) (W) Plasma welding device (1c) Umbrella (4) Turntable (8) Overlay Figure 2 Figure 3 Copper Figure 4 Figure 5 Figure 6
Claims (2)
状凹溝に、母材と異なる盛金材料を肉盛溶接するに際し
、前記エンジンバルブ等を一定方向に回転させつつ、第
１周目において、適宜の肉盛溶接装置におけるトーチよ
り発生させた火炎により、前記環状凹溝の表面の黒皮層
等を除去し、第２周目において、前記トーチに盛金材料
を供給して、環状凹溝の全面に肉盛溶接することを特徴
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 into an annular groove formed on the valve face of an engine valve, the engine valve, etc. is rotated in a fixed direction, and during the first round, , the black skin layer etc. on the surface of the annular groove is removed by a flame generated from a torch in a suitable overlay welding device, and in the second round, a metal material is supplied to the torch to form the annular groove. A method for overlaying metal material on engine valves, etc., which comprises overlaying the entire surface of the engine valve.
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つのトーチを備える適宜の肉盛溶接装置にお
ける一方のトーチより発生させた火炎により、前記環状
凹溝の表面の黒皮層等を除去しつつ、肉盛溶接装置にお
ける他方のトーチに盛金材料を供給して、黒皮層等の除
去された環状凹溝の全面に順次肉盛溶接することを特徴
とするエンジンバルブ等への盛金材料の肉盛溶接方法。(2) When overlaying a metal material different from the base material into an annular groove formed on the valve face of an engine valve, at least two torches are used while rotating the engine valve in a fixed direction. While removing the black skin layer etc. on the surface of the annular groove with a flame generated from one torch in an appropriate overlay welding device, supplying metal material to the other torch in the overlay welding device, A method for overlaying metal material on engine valves, etc., characterized by sequentially overlaying the entire surface of an annular groove from which black skin layer etc. have been removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16556990A JP2729247B2 (en) | 1990-06-26 | 1990-06-26 | Overlay welding method of overlay material to engine valve etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16556990A JP2729247B2 (en) | 1990-06-26 | 1990-06-26 | Overlay welding method of overlay material to engine valve etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0455065A true JPH0455065A (en) | 1992-02-21 |
| JP2729247B2 JP2729247B2 (en) | 1998-03-18 |
Family
ID=15814855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16556990A Expired - Lifetime JP2729247B2 (en) | 1990-06-26 | 1990-06-26 | Overlay welding method of overlay material to engine valve etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2729247B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014512961A (en) * | 2011-03-31 | 2014-05-29 | ノルスク・チタニウム・コンポーネンツ・アーエス | Method and apparatus for constructing metal object by three-dimensional free-form fabrication method |
| CN104722903A (en) * | 2015-03-23 | 2015-06-24 | 重庆大东隆腾汽车摩托车气门制造有限公司 | Plasma surfacing method for small end of valve rod |
| CN109689267A (en) * | 2016-07-08 | 2019-04-26 | 挪威钛公司 | Method and apparatus for constructing metal object by solid free fo manufacture by two welding guns |
| CN113664347A (en) * | 2021-09-29 | 2021-11-19 | 江苏神通核能装备有限公司 | Plasma arc surfacing method for surface of sphere |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990239A (en) * | 2012-12-26 | 2013-03-27 | 南通三九焊接机器制造有限公司 | Valve inner girth welding method |
-
1990
- 1990-06-26 JP JP16556990A patent/JP2729247B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014512961A (en) * | 2011-03-31 | 2014-05-29 | ノルスク・チタニウム・コンポーネンツ・アーエス | Method and apparatus for constructing metal object by three-dimensional free-form fabrication method |
| US9481931B2 (en) | 2011-03-31 | 2016-11-01 | Norsk Titanium As | Method and arrangement for building metallic objects by solid freeform fabrication |
| JP2016193457A (en) * | 2011-03-31 | 2016-11-17 | ノルスク・チタニウム・コンポーネンツ・アーエスＮｏｒｓｋ Ｔｉｔａｎｉｕｍ Ｃｏｍｐｏｎｅｎｔｓ Ａｓ | System for organizing metal body by solid freeform fabrication, and method for producing three-dimensional object of metal material by solid freeform fabrication |
| US10421142B2 (en) | 2011-03-31 | 2019-09-24 | Norsk Titanium As | Method and arrangement for building metallic objects by solid freeform fabrication using plasma transferred arc (PTA) torches |
| US11213920B2 (en) | 2011-03-31 | 2022-01-04 | Norsk Titanium As | Method and arrangement for building metallic objects by solid freeform fabrication |
| CN104722903A (en) * | 2015-03-23 | 2015-06-24 | 重庆大东隆腾汽车摩托车气门制造有限公司 | Plasma surfacing method for small end of valve rod |
| CN109689267A (en) * | 2016-07-08 | 2019-04-26 | 挪威钛公司 | Method and apparatus for constructing metal object by solid free fo manufacture by two welding guns |
| CN113664347A (en) * | 2021-09-29 | 2021-11-19 | 江苏神通核能装备有限公司 | Plasma arc surfacing method for surface of sphere |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2729247B2 (en) | 1998-03-18 |
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