JPH02224889A - Method for welding stainless steel and different metal - Google Patents
Method for welding stainless steel and different metalInfo
- Publication number
- JPH02224889A JPH02224889A JP1047375A JP4737589A JPH02224889A JP H02224889 A JPH02224889 A JP H02224889A JP 1047375 A JP1047375 A JP 1047375A JP 4737589 A JP4737589 A JP 4737589A JP H02224889 A JPH02224889 A JP H02224889A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- welding
- coating layer
- layer
- dissimilar metal
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 40
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 37
- 239000010935 stainless steel Substances 0.000 title claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 22
- 239000002184 metal Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 14
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000007769 metal material Substances 0.000 claims abstract description 31
- 239000011247 coating layer Substances 0.000 claims abstract description 24
- 239000010410 layer Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 10
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 150000002739 metals Chemical class 0.000 claims description 14
- 229910000765 intermetallic Inorganic materials 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 239000011230 binding agent Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000003925 fat Substances 0.000 abstract 1
- 230000001678 irradiating effect Effects 0.000 abstract 1
- 238000004898 kneading Methods 0.000 abstract 1
- 230000005012 migration Effects 0.000 abstract 1
- 238000013508 migration Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229910017076 Fe Zr Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/211—Bonding by welding with interposition of special material to facilitate connection of the parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/32—Bonding taking account of the properties of the material involved
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/32—Bonding taking account of the properties of the material involved
- B23K26/323—Bonding taking account of the properties of the material involved involving parts made of dissimilar metallic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、ステンレス鋼材と異種金属材との溶接方法に
係り、特に、鉄に対して金属間化合物を生成し易いＴｉ
、Ｚｒ等の異種金属材をステンレス鋼材に溶接する方法
に関するものである。Detailed Description of the Invention "Field of Industrial Application" The present invention relates to a method of welding stainless steel materials and dissimilar metal materials.
The present invention relates to a method of welding dissimilar metal materials such as , Zr, etc. to stainless steel materials.
「従来の技術」
従来、原子力発電プラント、化学プラントなどには、耐
食性に優れたステンレス鋼が多用されている。このステ
ンレス鋼には、他種金属との溶接が難しいという弱点が
ある。すなわちステンレス鋼とＴ（（チタン）あるいは
Ｚｒ（ジルコニウム）との溶接を例に挙げれば、溶接時
の熱により融合部に脆弱な金属間化合物（Ｆ ｅ−Ｔ
ｉあるいはＦｅ−Ｚｒ）が生成されるため、十分な溶接
強度が得られず、実際上、これらの金属を溶接すること
は困難である。したがって、上記ステンレス鋼と異種金
属とを結合しようとする°場合、機械的な結合手段、す
なわち配管の場合にあっては７ランジ継手を用いて結合
するのが一般的であった。"Conventional Technology" Conventionally, stainless steel, which has excellent corrosion resistance, has been widely used in nuclear power plants, chemical plants, etc. This stainless steel has the disadvantage that it is difficult to weld with other metals. In other words, taking as an example the welding of stainless steel and T (titanium) or Zr (zirconium), the heat during welding causes a weak intermetallic compound (F e-T
In practice, it is difficult to weld these metals because sufficient welding strength cannot be obtained because Zr or Fe-Zr) is generated. Therefore, when attempting to join the stainless steel and dissimilar metals, it has been common to use mechanical joining means, ie, in the case of piping, a 7-lunge joint.
「発明が解決しようとする課題」
しかしながら、７ランジ継手による機械的な結合は、高
い加工精度が要求されるためコストが高くなる傾向があ
り、また、溶接継手に比して施工上の融通性に欠け、さ
らには、重量が大きくなるという問題がある。``Problem to be solved by the invention'' However, mechanical connection using a 7-lunge joint requires high processing precision and tends to be expensive, and is less flexible in construction than a welded joint. Moreover, there is a problem that the weight is increased.
また、ステンレス鋼と異種金属との連結手段の他の例と
して、拡散接合、すなわち、異種金属の接合面を強固に
密着させて再結晶温度以上に加熱することにより、境界
面を通じて内金、属の原子を拡散させて一体化する技術
が知られているが、この拡散接合における金属間化合物
の発生を防止するには、両金属の接合面を例えば真空下
で処理するなどの処理が必要となって生産性の面で問題
がある。Another example of a method for connecting stainless steel and dissimilar metals is diffusion bonding, in which the bonding surfaces of dissimilar metals are brought into close contact and heated to a temperature higher than the recrystallization temperature. A technique is known to diffuse and integrate the atoms of two metals, but in order to prevent the generation of intermetallic compounds in this diffusion bonding, it is necessary to treat the joint surfaces of both metals under vacuum, for example. This poses a problem in terms of productivity.
本発明は上記事情に鑑みて提案されたもので、金属間化
合物を発生させることなくステンレス鋼と異種金属との
溶接を可能にすることを目的としている。The present invention was proposed in view of the above circumstances, and an object of the present invention is to enable welding of stainless steel and dissimilar metals without generating intermetallic compounds.
［課題を解決するための手段」
上記目的を達成するため、ステンレス鋼材と、Ｆｅｉ二
対して金属間化合物を生成し易いＴ ｉ、Ｚ ｒ等の異
種金属材との溶接方法において、ステンレス鋼材の表面
に異種金属材と同質の粉末を塗布した後、該粉末をレー
ザ照射により短時間焼成してステンレス鋼材表面に異種
金属の焼成層を形成するとともに、該焼成層の形成を複
数回繰り返すことによりコーティング層を厚く形成し、
次いで該コーティング層と異種金属材との間を異種金属
材と同質の溶接材により溶接するステンレス鋼と異種金
属との溶接方法としている。[Means for Solving the Problems] In order to achieve the above object, in a method of welding stainless steel materials and dissimilar metal materials such as Ti and Zr, which tend to generate intermetallic compounds compared to Fe2, After applying a powder of the same quality as the dissimilar metal material to the surface, the powder is fired for a short time by laser irradiation to form a fired layer of the dissimilar metal on the surface of the stainless steel material, and by repeating the formation of the fired layer multiple times. Form a thick coating layer,
The method of welding stainless steel and dissimilar metals then involves welding the coating layer and the dissimilar metal material using a welding material of the same quality as the dissimilar metal material.
「作用」
ステンレス鋼材の表面に塗布された粉末を焼成するとき
の熱の影響は、レーザ焼成の特性により短時間加熱とな
って、ステンレス鋼材側の温度上昇が小さく、シたがっ
て、ステンレス鋼材に含まれるＦｅをほとんど拡散させ
ることなく焼成層が形成される。焼成層を厚くしたコー
ティング層の形成後に、異種金属材と同質の溶接材で溶
接を施すことにより溶接を容易にし、かつ、コーティン
グ層の厚さにより、この時の溶接熱がステンレス鋼材に
影響を及ぼすことを避けるも、のである。"Effect" Due to the characteristics of laser firing, the effect of heat when firing the powder applied to the surface of stainless steel material is that it is heated for a short time, and the temperature rise on the stainless steel material side is small. A fired layer is formed with almost no diffusion of Fe contained therein. After forming a coating layer with a thicker firing layer, welding is performed with a welding material of the same quality as the dissimilar metal material, making welding easier, and depending on the thickness of the coating layer, the welding heat at this time does not affect the stainless steel material. It is also possible to avoid causing harm.
「実施例」
第１図ないし第３図は、本発明に係るステンレス鋼と異
種金属との溶接方法の実施工程順を示すものである。"Example" FIGS. 1 to 3 show the order of implementation steps of the method of welding stainless steel and dissimilar metals according to the present invention.
図中符号１は例えば板状のステンレス鋼材であり、該ス
テンレス鋼材ｌには溶接開先１１が形成されている。符
号２はＴｉ、Ｚｒ等のＦｅに対して金属間化合物を生成
し易い異種金属材であり、該異種金属材２にも溶接開先
２１が形成されている。そして、符号３はコーティング
層、４は完成状態の溶接部である。Reference numeral 1 in the figure is, for example, a plate-shaped stainless steel material, and a welding groove 11 is formed in the stainless steel material 1. As shown in FIG. Reference numeral 2 denotes a dissimilar metal material such as Ti, Zr, etc. that tends to form an intermetallic compound with Fe, and the dissimilar metal material 2 also has a weld groove 21 formed therein. Reference numeral 3 indicates a coating layer, and 4 indicates a welded portion in a completed state.
前記コーティング層３は、異種金属材２と同質の材料か
らなるもので、以下の工程順に形成される。The coating layer 3 is made of the same material as the dissimilar metal material 2, and is formed in the following steps.
■ 前記異種金属材２と同質の金属材料の粉末を例えば
油脂類のようなバインダーと練り合わせて塗布性を高め
たものを、はけなどによってステンレス鋼材ｌにおける
溶接開先１１に塗布する。(2) Powder of a metal material of the same quality as the dissimilar metal material 2 is kneaded with a binder such as oil to improve its applicability, and then applied to the welding groove 11 of the stainless steel material 1 using a brush or the like.
■ 塗布された粉末金属にレーザ光線を照射して瞬間的
に加熱すると、粉末金属が溶融して溶接開先１ａの表面
に一体に溶着した焼成状態となり、前記バインダーは加
熱によって気化することにより除去され、溶接開先１１
の表面には、異種金属材２と同質の薄い焼成層が形成さ
れる。■ When the applied powder metal is irradiated with a laser beam and instantaneously heated, the powder metal melts and becomes a fired state in which it is integrally welded to the surface of the weld groove 1a, and the binder is removed by being vaporized by heating. and welding groove 11
A thin fired layer of the same quality as the dissimilar metal material 2 is formed on the surface of the dissimilar metal material 2.
なお、このレーザ光線の照射は、局部的なものであるか
ら、ステンレス鋼材１の内壁における温度上昇は極めて
小さく、ステンレス鋼材１の内部からＦｅが拡散してレ
ーザによる焼成層に移行する現象の発生が抑制される。Note that since this laser beam irradiation is localized, the temperature rise on the inner wall of the stainless steel material 1 is extremely small, and a phenomenon in which Fe diffuses from inside the stainless steel material 1 and transfers to the laser-fired layer occurs. is suppressed.
１回の焼成層の厚さは、短時間焼成を目的とするために
、例えば０．３ｍｍないし０．４ｍｔａ程度に設定され
る。このような焼成層の形成を複数回繰り返すことによ
り、コーティング層３を次第に厚く形成する。The thickness of one fired layer is set, for example, to about 0.3 mm to 0.4 mta for the purpose of short-time firing. By repeating the formation of such a fired layer multiple times, the coating layer 3 is gradually formed thicker.
第１図に示すコーティング層３の厚さ寸法Ｓは、後述す
る溶接部４の形成時の溶接熱による影響が、ステンレス
鋼材ｌに及ばないように（当初からの溶接開先１ムのス
テンレス鋼層の界面が再度溶融状態とならないように）
、３ｍｍないし５■程度に設定される。The thickness dimension S of the coating layer 3 shown in FIG. (so that the interface between the layers does not become molten again)
, is set to about 3mm to 5mm.
■ 上記コーティング層３の厚さを十分なものとした後
、第２図に示すように、異種金属材２の溶接開先２ａを
コーティング層３に突き合わせた状態に配置する。(2) After the coating layer 3 has been made sufficiently thick, the welding groove 2a of the dissimilar metal material 2 is placed so as to butt against the coating layer 3, as shown in FIG.
■ 次いで、コーティング層３と異種金属材２における
溶接開先２１との間を、異種金属材２と同質の溶接材に
より溶接すると、第３図に示すように、溶接部４を介し
てステンレス鋼材１と異種金属材２とが相互に溶接され
る。■ Next, when the coating layer 3 and the welding groove 21 of the dissimilar metal material 2 are welded using a welding material of the same quality as the dissimilar metal material 2, the stainless steel material 1 and dissimilar metal material 2 are welded together.
この溶接部４の形成時においては、コーティング１１３
の厚さにより、溶接熱がステンレス鋼材２に影響を及ぼ
さないので、つまり、溶接時の熱によりステンレス鋼材
１とコーティング層３との界面が伝導熱ζこよって加熱
されるが、溶接開先Ｉｎが溶融状態となる加熱がなされ
ないので、金属間化合物が生成されることがなく、十分
な溶接部４の強度を得ることができるものである。When forming this welded portion 4, the coating 113
Due to the thickness of the welding groove In Since no heating is performed to bring the metal into a molten state, intermetallic compounds are not generated, and sufficient strength of the welded portion 4 can be obtained.
なお、コーティング層３の厚さＳの値は、上記実施例に
限定されるものではなく、ステンレス鋼材１に溶接すべ
き異種金属材２の材質、寸法、あるいは、これに伴う溶
接温度に応じて、ステンレス鋼材ｌの温度上昇を抑制し
得る程度に設定される。Note that the value of the thickness S of the coating layer 3 is not limited to the above example, and may vary depending on the material and dimensions of the dissimilar metal material 2 to be welded to the stainless steel material 1, or the welding temperature associated therewith. , is set to such an extent that the temperature rise of the stainless steel material 1 can be suppressed.
「発明の効果」
以上の説明で明らかなように、本発明に係るステンレス
鋼と異種金属との溶接方法によれば、ステンレス鋼材の
表面に異種金属材と同質のコーティング層がレーザ焼成
によって形成され、レーザ焼成時の加熱状態が従来の溶
接による加熱状態と比較して、著しく短時間で小熱量と
なるために、金属間化合物の発生を防止する。また、異
種金属材は同質のコーティング層と溶接することになる
ため、脆性物質を生じることなく溶接することができる
。加えて、上記手法によって異種金属を自由に接合する
範囲が拡大されるから、プラント配管系等に用いられて
、一部の箇所だけに必要とされる耐食性、耐熱性など性
能を容易に満足させることができる等の効果を奏するも
のである。"Effects of the Invention" As is clear from the above explanation, according to the method of welding stainless steel and dissimilar metals according to the present invention, a coating layer having the same quality as the dissimilar metal material is formed on the surface of the stainless steel material by laser firing. Since the heating state during laser firing is significantly shorter and requires less heat than the heating state during conventional welding, generation of intermetallic compounds is prevented. Further, since dissimilar metal materials are welded to a coating layer of the same quality, welding can be performed without producing brittle materials. In addition, because the above method expands the range in which dissimilar metals can be freely joined, it can be used in plant piping systems, etc., to easily satisfy performance requirements such as corrosion resistance and heat resistance that are only required in certain areas. It has the following effects:
図面は本発明に係るステンレス鋼と異種金属との溶接方
法の実施工程順を示すもので、第１図はコーティング層
形成時の断面図、第２図は突き合わせ時の断面図、第３
図は溶接終了後の断面図である。
第１図
１・・・・・・ステンレス鋼材、
ｌａ・・・・・・溶接開先、
２・・・・・・異種金属材、
２為・・・・・・溶接開先、
３・・・・・・コーティング層、
４・・・・・・溶接部。
第２図
出願人 石川島播磨重工業株式会社
第３図The drawings show the order of implementation steps of the method of welding stainless steel and dissimilar metals according to the present invention, in which Figure 1 is a cross-sectional view when a coating layer is formed, Figure 2 is a cross-sectional view when they are butted together, and Figure 3 is a cross-sectional view when they are butted together.
The figure is a sectional view after welding is completed. Fig. 1 1...Stainless steel material, la...Welding groove, 2...Dissimilar metal material, 2...Welding groove, 3... ...Coating layer, 4...Welded part. Figure 2 Applicant Ishikawajima Harima Heavy Industries Co., Ltd. Figure 3
Claims (1)
易いＴｉ、Ｚｒ等の異種金属材との溶接方法において、
ステンレス鋼材の表面に異種金属材と同質の粉末を塗布
した後、該粉末をレーザ照射により短時間焼成してステ
ンレス鋼材表面に異種金属の焼成層を形成するとともに
、該焼成層の形成を複数回繰り返すことによりコーティ
ング層を厚く形成し、次いで該コーティング層と異種金
属材との間を異種金属材と同質の溶接材により溶接する
ことを特徴とするステンレス鋼と異種金属との溶接方法
。In a method of welding stainless steel material and dissimilar metal materials such as Ti and Zr, which tend to form intermetallic compounds with Fe,
After applying a powder of the same quality as the dissimilar metal material to the surface of the stainless steel material, the powder is fired for a short time by laser irradiation to form a fired layer of the dissimilar metal on the surface of the stainless steel material, and the fired layer is formed multiple times. A method for welding stainless steel and dissimilar metals, characterized by forming a thick coating layer by repeating the welding process, and then welding the coating layer and the dissimilar metal material using a welding material of the same quality as the dissimilar metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1047375A JPH02224889A (en) | 1989-02-28 | 1989-02-28 | Method for welding stainless steel and different metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1047375A JPH02224889A (en) | 1989-02-28 | 1989-02-28 | Method for welding stainless steel and different metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02224889A true JPH02224889A (en) | 1990-09-06 |
Family
ID=12773354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1047375A Pending JPH02224889A (en) | 1989-02-28 | 1989-02-28 | Method for welding stainless steel and different metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02224889A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345233A (en) * | 2015-11-30 | 2016-02-24 | 天津威尔朗科技有限公司 | Gas metal arc welding process of medium-manganese wear-resistant steel and Q345B low-alloy steel |
| JP2018065144A (en) * | 2016-10-17 | 2018-04-26 | 三菱重工業株式会社 | Dissimilar metal joining method |
| CN110238525A (en) * | 2019-05-17 | 2019-09-17 | 东莞材料基因高等理工研究院 | A kind of method for welding dissimilar metal of mild steel and cast iron |
-
1989
- 1989-02-28 JP JP1047375A patent/JPH02224889A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345233A (en) * | 2015-11-30 | 2016-02-24 | 天津威尔朗科技有限公司 | Gas metal arc welding process of medium-manganese wear-resistant steel and Q345B low-alloy steel |
| JP2018065144A (en) * | 2016-10-17 | 2018-04-26 | 三菱重工業株式会社 | Dissimilar metal joining method |
| WO2018074312A1 (en) * | 2016-10-17 | 2018-04-26 | 三菱重工業株式会社 | Method for bonding dissimilar metals to each other |
| CN110238525A (en) * | 2019-05-17 | 2019-09-17 | 东莞材料基因高等理工研究院 | A kind of method for welding dissimilar metal of mild steel and cast iron |
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