CN104690445B - 2505 phase stainless steel use metal flux-cored wires and preparation method thereof - Google Patents
2505 phase stainless steel use metal flux-cored wires and preparation method thereof Download PDFInfo
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- CN104690445B CN104690445B CN201510075161.1A CN201510075161A CN104690445B CN 104690445 B CN104690445 B CN 104690445B CN 201510075161 A CN201510075161 A CN 201510075161A CN 104690445 B CN104690445 B CN 104690445B
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- flux
- stainless steel
- medicine core
- cored wire
- type groove
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 36
- 239000010935 stainless steel Substances 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000003814 drug Substances 0.000 claims abstract description 44
- 239000000843 powder Substances 0.000 claims abstract description 37
- 238000001035 drying Methods 0.000 claims abstract description 19
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims abstract description 14
- 239000000470 constituent Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 12
- 239000010963 304 stainless steel Substances 0.000 claims description 11
- 238000005491 wire drawing Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 16
- 238000005260 corrosion Methods 0.000 abstract description 13
- 230000007797 corrosion Effects 0.000 abstract description 13
- 229910052742 iron Inorganic materials 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 4
- 230000008520 organization Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000003517 fume Substances 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract description 2
- 229940079593 drug Drugs 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 23
- 229910000831 Steel Inorganic materials 0.000 description 18
- 239000010959 steel Substances 0.000 description 18
- 230000001681 protective effect Effects 0.000 description 7
- 230000008602 contraction Effects 0.000 description 6
- 229910052750 molybdenum Inorganic materials 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 4
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
Abstract
2505 phase stainless steel use metal flux-cored wires, are made up of crust and medicine core, and medicine core is metal-powder, composed of the following components by mass percentage：Cr38 50%, Ni10 15%, Mo3 5%, Mn2 4%, remaining is iron, and above constituent mass percentage sum is 100%.The invention also discloses its preparation method：Drying obtains medicine core powder after each component is well mixed；Medicine core powder is added in the U-type groove that stainless steel 304 steel band is rolled into, U-type groove is rolled into closure, drawing is stretched, disk is packed into disk.Flux-cored wire of the present invention can obtain ferrite and austenitic duplex seam organization, and welding point has excellent mechanical property and corrosion resisting property, with good welding usability, and spatter is few, and weld fumes is few, without slag inclusion problem in welding process；Face of weld is bright and clean smooth, postwelding without cleaning, can continuous sequence, effectively increase welding production efficiency.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to a kind of 2505 phase stainless steel use metal mold medicine core weldering
Silk, the invention further relates to the preparation method of the flux-cored wire.
Background technology
Two phase stainless steel since the U.S. is born, has had evolved to the third generation from 1940s.Its main feature
Be yield strength up to 400-550MPa, be 2 times of common stainless steel, therefore can economize on material, reduce device fabrication cost.
Under conditions of anticorrosive aspect, particularly media environment relatively more severe (such as seawater, chloride ion content is higher), two phase stainless steel
Anti- spot corrosion, crevice corrosion, stress corrosion and Corrosion Fatigue Properties be substantially better than common austenitic stainless steel, can with height conjunction
Golden austenitic stainless steel matches in excellence or beauty.
Ferritic phase is makeed an appointment with austenite and respectively accounts for half in the metallographic structure of two phase stainless steel, the content of the few phase of general quantity
Need to reach 30%.In the case of relatively low containing C, Cr contents are in 18%~28%, Ni contents 3%~10%.Some steel are also
Contain Mo, Cu, Nb, Ti, the alloying element such as N.The characteristics of such steel has austenite and ferritic stainless steel concurrently, with ferritic phase
Than plasticity, toughness are higher, and no brittleness at room temperature, intergranular corrosion resistance performance and welding performance are significantly increased, while also maintaining iron
The 475 DEG C of fragility and thermal conductivity factor of ferritic stainless steel are high, the features such as with superplasticity.Compared with austenitic stainless steel, intensity
High and intergranular corrosion resistance and resistance to chloride stress corrosion are significantly improved.
The stainless steel that 2505 two phase stainless steels are made up of 25% Cr, 2% Mo, 5% Ni and 0.25% N.
2505 phase stainless steel use metal flux-cored wires are developed, make welding point that there is the mechanical property matched with 2505 two phase stainless steels
Can and corrosion resisting property, obtain 2505 two-phase stainless steel welding constructions can the two phase stainless steel of further genralrlization 2505 use.
The content of the invention
It is an object of the invention to provide a kind of 2505 phase stainless steel use metal flux-cored wire, ferrite and Ovshinsky are obtained
The seam organization of body, its welding point has the mechanical property and corrosion resisting property matched with 2505 two phase stainless steels.
It is a further object to provide a kind of preparation method of 2505 phase stainless steel use metal flux-cored wire.
The technical solution adopted in the present invention is, 2505 phase stainless steel use metal flux-cored wires, by crust and medicine core
Composition, medicine core is metal-powder, composed of the following components by mass percentage：Cr38%-50%, Ni10%-15%, Mo3%-
5%, Mn2%-4%, remaining is iron, and above constituent mass percentage sum is 100%.
The features of the present invention is also resided in：
Skin material is 304 stainless steel belts.
The filling rate (mass ratio) of medicine core is 25%-27% in the flux-cored wire.
A diameter of 1.2-2.0mm of the flux-cored wire.
Another technical scheme of the present invention is, the preparation side of 2505 phase stainless steel use metal flux-cored wires
Method, is comprised the following steps that：
Step 1, Cr38%-50%, Ni10%-15%, Mo3%-5%, Mn2%- are weighed respectively by mass percentage
4%, remaining is iron, and above constituent mass percentage sum is 100%；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
200-300 DEG C, the time is 2-2.5h, obtains medicine core powder；
Step 3, by 304 stainless steel belts be placed on flux-cored wire forming machine put band machine on, will be stainless by forming machine
The steel band of steel 304 is rolled into U-type groove, and the medicine core powder that step 2 is obtained then is added into U-type groove, controls the filling of medicine core powder
Rate is 25%-27%, then U-type groove is rolled into closure by forming machine, and is drawn to 1.2mm-2.0mm, obtains medicine core weldering
Silk；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The beneficial effects of the invention are as follows,
1. flux-cored wire of the present invention can obtain ferrite and austenitic duplex seam organization, its welding point have with
The mechanical property and corrosion resisting property of 2505 two phase stainless steels matching.
2. the flux-cored wire has good welding usability, spatter is few, and weld fumes is few, without folder in welding process
Slag problem.
3. the flux-cored wire face of weld is bright and clean smooth, postwelding without cleaning, can continuous sequence, effectively increase welding life
Produce efficiency.It is suitable for automatic welding device, with higher production efficiency.
4. flux-cored wire preparation method of the present invention, technique is simple, easy to operate, it is adapted to mass production.
Embodiment
With reference to embodiment, the present invention is described in detail.
2505 phase stainless steel use metal flux-cored wires of the invention, are made up of, medicine core is metal-powder crust and medicine core,
It is composed of the following components by mass percentage：Cr38%-50%, Ni10%-15%, Mo3%-5%, Mn2%-4%, remaining is
Iron, above constituent mass percentage sum is 100%.Skin material is 304 stainless steel belts.
The filling rate (mass ratio) of medicine core is 25%-27% in the flux-cored wire.A diameter of 1.2- of the flux-cored wire
2.0mm。
The preparation method of above-mentioned 2505 phase stainless steel use metal flux-cored wire, is comprised the following steps that：
Step 1, Cr38%-50%, Ni10%-15%, Mo3%-5%, Mn2%- are weighed respectively by mass percentage
4%, remaining is iron, and above constituent mass percentage sum is 100%；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
200-300 DEG C, the time is 2-2.5h, obtains medicine core powder；
Step 3, by 304 stainless steel belts be placed on flux-cored wire forming machine put band machine on, will be stainless by forming machine
The steel band of steel 304 is rolled into U-type groove, and the medicine core powder that step 2 is obtained then is added into U-type groove, controls the filling of medicine core powder
Rate is 25%-27%, then U-type groove is rolled into closure by forming machine, and is drawn to 1.2mm-2.0mm, obtains medicine core weldering
Silk；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
Flux-cored wire of the present invention is applied to gas metal-arc welding (GMAW), and welding current is 180-220A, and voltage is
20-25V, protective gas is CO2, Ar, or Ar20%-CO280% mixed gas, gas flow rate is 15-20L/min.
The effect of each component in medicine core：
1st, Cr, Mo are ferritiseies, make to have the tendency of to generate ferritic structure in weld seam；Ni, Mn are austenitizings
Element, makes to have the tendency of to produce austenite structure in weld seam.Cr, Ni, Mo, Mn coordinate, when designed ratio is suitable,
The duplex structure of weld seam meeting ferrite and austenite, therefore Cr, Ni, Mo, Mn use are in order that ultimately generating iron in weld seam
The duplex structure of ferritic and austenite.
2nd, Cr, which also has, significantly improves the corrosion proof ability of weld metal, the corrosion resistance of weld seam is reached that what is used wants
Ask.
3rd, Mo and Mn also have the effect for improving weld strength.
4th, Ni can ensure that weld seam has certain toughness.
5th, iron supplements remaining weight in powder core, powder core weight is reached 100%.
Embodiment 1
Step 1, Cr380g, Ni120g, Mo50g, Mn40g, Fe410g are weighed respectively；
Step 2, the powder that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
200 DEG C, the time is 2h, obtains medicine core powder；
Step 3, by 304 stainless steel belts be placed on flux-cored wire forming machine put band machine on, will be stainless by forming machine
The steel band of steel 304 is rolled into U-type groove, and the medicine core powder that step 2 is obtained then is added into U-type groove, controls the filling of medicine core powder
Rate is 25%-27%, then U-type groove is rolled into closure by forming machine, and is drawn to 1.2mm, obtains flux-cored wire；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 1, using gas metal-arc welding (GMAW), welding current is 180-
200A, voltage is 22V, and protective gas is CO2, gas flow rate is 15L/min.The tensile strength of welding point is 675Mpa, is bent
The limit is taken for 578Mpa, the contraction percentage of area is 55%, and ballistic work is 52J.Performance meets the use requirement of 2505 two phase stainless steels.
Embodiment 2
Step 1, Cr400g, Ni150g, Mo40g, Mn20g, Fe390g are weighed respectively；
Step 2, the powder that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
250 DEG C, the time is 2.25h, obtains medicine core powder；
Step 3, by 304 stainless steel belts be placed on flux-cored wire forming machine put band machine on, will be stainless by forming machine
The steel band of steel 304 is rolled into U-type groove, and the medicine core powder that step 2 is obtained then is added into U-type groove, controls the filling of medicine core powder
Rate is 25%-27%, then U-type groove is rolled into closure by forming machine, and is drawn to 1.4mm, obtains flux-cored wire；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 2, using gas metal-arc welding (GMAW), welding current is 190-
200A, voltage is 22V, and protective gas is CO2, gas flow rate is 15L/min.The tensile strength of joint is 647Mpa, surrender
The limit is 526Mpa, and the contraction percentage of area is 53%, and ballistic work is 56J.Performance meets the use requirement of 2505 two phase stainless steels.
Embodiment 3
Step 1, Cr420g, Ni110g, Mo30g, Mn40g, Fe400g are weighed respectively；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
300 DEG C, the time is 2.5h, obtains medicine core powder；
Step 3, by 304 stainless steel belts be placed on flux-cored wire forming machine put band machine on, will be stainless by forming machine
The steel band of steel 304 is rolled into U-type groove, and the medicine core powder that step 2 is obtained then is added into U-type groove, controls the filling of medicine core powder
Rate is 25%-27%, then U-type groove is rolled into closure by forming machine, and is drawn to 1.6mm, obtains flux-cored wire；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 3, using gas metal-arc welding (GMAW), welding current is 200-
220A, voltage is 23V, and protective gas is CO2, gas flow rate is 17L/min.The tensile strength of joint is 689Mpa, surrender
The limit is 582Mpa, and the contraction percentage of area is 56%, and ballistic work is 60J.Performance meets the use requirement of 2505 two phase stainless steels.
Embodiment 4
Step 1, Cr460g, Ni140g%, Mo40g, Mn30g, Fe330g are weighed respectively；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
200 DEG C, the time is 2.5h, obtains medicine core powder；
Step 3, by stainless steel 304 steel band be placed on flux-cored wire forming machine put band machine on, will be stainless by forming machine
The steel band of steel 304 is rolled into U-type groove, and the medicine core powder that step 2 is obtained then is added into U-type groove, controls the filling of medicine core powder
Rate is 25%-27%, then U-type groove is rolled into closure by forming machine, and is drawn to 1.8mm, obtains flux-cored wire；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 4, using gas metal-arc welding (GMAW), welding current is 220-
220A, voltage is 25V, and protective gas is CO2, gas flow rate is 20L/min.The tensile strength of joint is 672Mpa, surrender
The limit is 535Mpa, and the contraction percentage of area is 56%, and ballistic work is 62J.Performance meets the use requirement of 2505 two phase stainless steels.
Embodiment 5
Step 1, Cr480g, Ni130g, Mo50g, Mn40g, Fe300g are weighed respectively；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
220 DEG C, the time is 2.3h, obtains medicine core powder；
Step 3, by 304 stainless steel belts be placed on flux-cored wire forming machine put band machine on, will be stainless by forming machine
The steel band of steel 304 is rolled into U-type groove, and the medicine core powder that step 2 is obtained then is added into U-type groove, controls the filling of medicine core powder
Rate is 25%-27%, then U-type groove is rolled into closure by forming machine, and is drawn to 2.0mm, obtains flux-cored wire；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 5, using gas metal-arc welding (GMAW), welding current is 200-
220A, voltage is 23V, and protective gas is argon gas, and gas flow rate is 17L/min.The tensile strength of joint is 661Mpa, surrender
The limit is 522Mpa, and the contraction percentage of area is 52%, and ballistic work is 56J.Performance meets the use requirement of 2505 two phase stainless steels.
Embodiment 6
Step 1, Cr500g, Ni100g, Mo30g, Mn20g, Fe350g are weighed respectively；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is
270 DEG C, the time is 2.4h, obtains medicine core powder；
Step 3, by 304 stainless steel belts be placed on flux-cored wire forming machine put band machine on, will be stainless by forming machine
The steel band of steel 304 is rolled into U-type groove, and the medicine core powder that step 2 is obtained then is added into U-type groove, controls the filling of medicine core powder
Rate is 25%-27%, then U-type groove is rolled into closure by forming machine, and is drawn to 2.0mm, obtains flux-cored wire；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
The flux-cored wire prepared with embodiment 6, using gas metal-arc welding (GMAW), welding current is 220-
220A, voltage is 25V, and protective gas is Ar20%+CO280%, gas flow rate is 20L/min.The tensile strength of joint is
680Mpa, yield limit is 562Mpa, and the contraction percentage of area is 54%, and ballistic work is 60J.Performance meets 2505 two phase stainless steels
Use requirement.
Claims (3)
1.2505 phase stainless steel use metal flux-cored wires, it is characterised in that be made up of crust and medicine core, medicine core is metal powder
Body, it is composed of the following components by mass percentage：Cr38%-50%, Ni10%-15%, Mo3%-5%, Mn2%-4%, its
Yu Weitie, above constituent mass percentage sum is 100%；
The skin material is 304 stainless steel belts；
The filling rate (mass ratio) of medicine core is 25%-27% in the flux-cored wire.
2. 2505 phase stainless steel use metal flux-cored wire according to claim 1, it is characterised in that the flux-cored wire
A diameter of 1.2-2.0mm.
The preparation method of 3.2505 phase stainless steel use metal flux-cored wires, it is characterised in that comprise the following steps that：
Step 1, Cr38%-50%, Ni10%-15%, Mo3%-5%, Mn2%-4% are weighed respectively by mass percentage, its
Yu Weitie, above constituent mass percentage sum is 100%；
Step 2, the material that step 1 is weighed is well mixed, is then placed within drying oven and dries, the temperature of drying is 200-
300 DEG C, the time is 2-2.5h, obtains medicine core powder；
Step 3,304 stainless steel belts are placed on the putting on band machine of flux-cored wire forming machine, by forming machine by stainless steel 304
Steel band is rolled into U-type groove, and the medicine core powder that step 2 is obtained then is added into U-type groove, and the filling rate for controlling medicine core powder is
25%-27%, then U-type groove is rolled by closure by forming machine, and 1.2mm-2.0mm is drawn to, obtain flux-cored wire；
Step 4, finally flux-cored wire prepared by step 3 is stretched with wire drawing machine, disk is packed into disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510075161.1A CN104690445B (en) | 2015-02-12 | 2015-02-12 | 2505 phase stainless steel use metal flux-cored wires and preparation method thereof |
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|---|---|---|---|
| CN201510075161.1A CN104690445B (en) | 2015-02-12 | 2015-02-12 | 2505 phase stainless steel use metal flux-cored wires and preparation method thereof |
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| CN104690445B true CN104690445B (en) | 2017-08-25 |
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| CN106736048B (en) * | 2016-11-29 | 2019-04-19 | 洛阳双瑞特种合金材料有限公司 | A kind of high-strength weathering steel metal powder core pattern seamless flux-cored wire |
| CN113714682B (en) * | 2021-08-27 | 2022-07-01 | 广东省科学院中乌焊接研究所 | Super duplex stainless steel self-protection flux-cored wire and preparation method thereof |
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| KR100352644B1 (en) * | 2000-07-28 | 2002-09-12 | 고려용접봉 주식회사 | Flux cored welding wire having properties of anti-stress corrosion, anti-pitting and good weldibilty for dual phase stainless steel |
| JP4672177B2 (en) * | 2001-05-15 | 2011-04-20 | 新日鐵住金ステンレス株式会社 | Submerged arc welding method for duplex stainless steel |
| KR100774155B1 (en) * | 2006-10-20 | 2007-11-07 | 고려용접봉 주식회사 | Flux cored wire for duplex stainless steel and the manufacturing method thereof |
| WO2009145347A1 (en) * | 2008-05-27 | 2009-12-03 | 新日鐵住金ステンレス株式会社 | Flux-cored wire for welding of duplex stainless steel which enables the miniaturization of solidified crystal particles |
| CN102049632A (en) * | 2009-10-30 | 2011-05-11 | 北京赛亿科技股份有限公司 | High-hardness self-protecting cold roll build-up welding flux-cored wire |
| JP4995888B2 (en) * | 2009-12-15 | 2012-08-08 | 株式会社神戸製鋼所 | Stainless steel arc welding flux cored wire |
| JP5431373B2 (en) * | 2011-01-18 | 2014-03-05 | 日鐵住金溶接工業株式会社 | Flux-cored wire for duplex stainless steel welding |
| CN102962562A (en) * | 2012-12-03 | 2013-03-13 | 永胜机械工业（昆山）有限公司 | Control method for ferrite of duplex stainless steel welded joint |
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