CN105108283A - Method for welding dissimilar steel plate of 45 steel and ZG275-485 steel - Google Patents
Method for welding dissimilar steel plate of 45 steel and ZG275-485 steel Download PDFInfo
- Publication number
- CN105108283A CN105108283A CN201510484981.6A CN201510484981A CN105108283A CN 105108283 A CN105108283 A CN 105108283A CN 201510484981 A CN201510484981 A CN 201510484981A CN 105108283 A CN105108283 A CN 105108283A
- Authority
- CN
- China
- Prior art keywords
- welding
- steel
- adopt
- weld
- gas shielded
- 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 76
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims description 6
- 239000010425 asbestos Substances 0.000 claims description 3
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 238000010583 slow cooling Methods 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000009659 non-destructive testing Methods 0.000 abstract description 2
- 238000012797 qualification Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a method for welding a dissimilar steel plate of 45 steel and ZG275-485 steel, and relates to the technical field of steel welding. The method mainly comprises three steps of pre-welding preparation, welding and post-welding thermal treatment. According to the welding method, welding joints are good in anti-cracking ability; the welding quality of a component is high; the nondestructive testing of a weld line area is high in qualification rate; and the welding requirement is met.
Description
Technical field
The present invention relates to Plate Welding technical field, is more particularly the welding method of a kind of xenogenesis steel plate 45 steel and ZG275-485 steel.
Background technology
Cast steel ZG275-485H and 45 steel belong to pearlitic steel together, and metallographic structure is identical, and main Welding Problems easily produces hardened structure and welding cold cracking.When cast steel ZG275-485H and 45 steel different steel weld, the carbon equivalent of cast steel ZG275-485H is that 0.37%, 45 steel carbon equivalents reach 0.56%.As w(C) eq < 0.4% time, tendency of hardenability is little, and weldability is good; Work as w(C) eq=0.4%-0.6%, especially w(C) eq>0.5% time, steel easily harden, weldability be deteriorated.In actual components, the thickness of steel-casting and 45 steel is all very large, and anisotropy is large, and crack resistance is poorer.
Summary of the invention
The object of the invention is to make up the deficiencies in the prior art, the welding method of a kind of xenogenesis steel plate 45 steel and ZG275-485 steel is provided.
The object of the invention is to be achieved through the following technical solutions:
A welding method for xenogenesis steel plate 45 steel and ZG275-485 steel, is characterized in that: comprise the following steps:
(1) welds prepares
The first, the selection of welding manner and welding material, adopt the welding of CO2 gas shielded arc welding, welding material is CHT-711 welding wire, and wlding specification is φ 1.2mm;
The second, open double V-groove to welding steel, groove size is 60 °, and root gap is 2mm, and root face size is 2mm;
3rd, adopt oxy-acetylene flame to carry out preheating to bevel for welding and 100mm scope thereof, preheat temperature is 250-300 DEG C;
(2) weld
The first, prime coat welds, and adopt CO2 gas shielded arc welding to weld with the speed of welding of 25-40cm/min, welding current is 200-220A, and weldingvoltage is 23-25V;
The second, packed layer welds, and adopt CO2 gas shielded arc welding to weld with the speed of welding of 20-30cm/min, welding current is 220-260A, and weldingvoltage is 26-30V;
3rd, capping layer welds, and adopt CO2 gas shielded arc welding to weld with the speed of welding of 25-40cm/min, welding current is 180-210A, and weldingvoltage is 22-24V;
(3) post weld heat treatment
By the isothermal holding 3 hours at 300-350 DEG C of the steel plate after welding, then with asbestos cloth insulation slow cooling to environment temperature.
The invention has the advantages that:
The cracking resistance of welding method welding point of the present invention is good, and the welding quality of component is high, and welded seam area Non-Destructive Testing qualification rate is high, meets welding requirements.
Detailed description of the invention
A welding method for xenogenesis steel plate 45 steel and ZG275-485 steel, is characterized in that: comprise the following steps:
(1) welds prepares
The first, the selection of welding manner and welding material, adopt the welding of CO2 gas shielded arc welding, welding material is CHT-711 welding wire, and wlding specification is φ 1.2mm;
The second, open double V-groove to welding steel, groove size is 60 °, and root gap is 2mm, and root face size is 2mm;
3rd, adopt oxy-acetylene flame to carry out preheating to bevel for welding and 100mm scope thereof, preheat temperature is 250-300 DEG C;
(2) weld
The first, prime coat welds, and adopt CO2 gas shielded arc welding to weld with the speed of welding of 25cm/min, welding current is 200A, and weldingvoltage is 23V;
The second, packed layer welds, and adopt CO2 gas shielded arc welding to weld with the speed of welding of 20cm/min, welding current is 220A, and weldingvoltage is 26V;
3rd, capping layer welds, and adopt CO2 gas shielded arc welding to weld with the speed of welding of 25cm/min, welding current is 180A, and weldingvoltage is 22V;
(3) post weld heat treatment
By the isothermal holding 3 hours at 300 DEG C of the steel plate after welding, then with asbestos cloth insulation slow cooling to environment temperature.
Claims (1)
1. a welding method for xenogenesis steel plate 45 steel and ZG275-485 steel, is characterized in that: comprise the following steps:
(1) welds prepares
The first, the selection of welding manner and welding material, adopt the welding of CO2 gas shielded arc welding, welding material is CHT-711 welding wire, and wlding specification is φ 1.2mm;
The second, open double V-groove to welding steel, groove size is 60 °, and root gap is 2mm, and root face size is 2mm;
3rd, adopt oxy-acetylene flame to carry out preheating to bevel for welding and 100mm scope thereof, preheat temperature is 250-300 DEG C;
(2) weld
The first, prime coat welds, and adopt CO2 gas shielded arc welding to weld with the speed of welding of 25-40cm/min, welding current is 200-220A, and weldingvoltage is 23-25V;
The second, packed layer welds, and adopt CO2 gas shielded arc welding to weld with the speed of welding of 20-30cm/min, welding current is 220-260A, and weldingvoltage is 26-30V;
3rd, capping layer welds, and adopt CO2 gas shielded arc welding to weld with the speed of welding of 25-40cm/min, welding current is 180-210A, and weldingvoltage is 22-24V;
(3) post weld heat treatment
By the isothermal holding 3 hours at 300-350 DEG C of the steel plate after welding, then with asbestos cloth insulation slow cooling to environment temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484981.6A CN105108283A (en) | 2015-08-10 | 2015-08-10 | Method for welding dissimilar steel plate of 45 steel and ZG275-485 steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484981.6A CN105108283A (en) | 2015-08-10 | 2015-08-10 | Method for welding dissimilar steel plate of 45 steel and ZG275-485 steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105108283A true CN105108283A (en) | 2015-12-02 |
Family
ID=54656511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510484981.6A Pending CN105108283A (en) | 2015-08-10 | 2015-08-10 | Method for welding dissimilar steel plate of 45 steel and ZG275-485 steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105108283A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825876A (en) * | 2017-03-23 | 2017-06-13 | 江苏信泰化工装备有限公司 | The welding method of the CO2 gas shielded arc weldings of large diameter pipeline foreign material |
| CN108515255A (en) * | 2018-04-04 | 2018-09-11 | 石家庄铁道大学 | Welding method of electric bucket rod |
| CN108655546A (en) * | 2017-03-30 | 2018-10-16 | 南阳二机石油装备集团股份有限公司 | Dissimilar steel welding technology method |
| CN109702302A (en) * | 2019-01-22 | 2019-05-03 | 湖南机电职业技术学院 | Dissimilar steel welding technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259562A (en) * | 2008-03-20 | 2008-09-10 | 浙江盛达铁塔有限公司 | Welding technique for rolled steel |
| CN101269432A (en) * | 2008-05-20 | 2008-09-24 | 南通市电站阀门有限公司 | Dissimilar metal welding method for WCB steel valve and WB36 steel pipeline |
| CN104209625A (en) * | 2014-09-16 | 2014-12-17 | 武汉一冶钢结构有限责任公司 | Q460 steel thick plate welding process |
| CN104708170A (en) * | 2013-12-16 | 2015-06-17 | 江苏鸿光杆塔有限公司 | Q460C steel welding process |
-
2015
- 2015-08-10 CN CN201510484981.6A patent/CN105108283A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259562A (en) * | 2008-03-20 | 2008-09-10 | 浙江盛达铁塔有限公司 | Welding technique for rolled steel |
| CN101269432A (en) * | 2008-05-20 | 2008-09-24 | 南通市电站阀门有限公司 | Dissimilar metal welding method for WCB steel valve and WB36 steel pipeline |
| CN104708170A (en) * | 2013-12-16 | 2015-06-17 | 江苏鸿光杆塔有限公司 | Q460C steel welding process |
| CN104209625A (en) * | 2014-09-16 | 2014-12-17 | 武汉一冶钢结构有限责任公司 | Q460 steel thick plate welding process |
Non-Patent Citations (1)
| Title |
|---|
| 代薇等: "辽河油田SAGD注汽阀门的焊接", 《焊接技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825876A (en) * | 2017-03-23 | 2017-06-13 | 江苏信泰化工装备有限公司 | The welding method of the CO2 gas shielded arc weldings of large diameter pipeline foreign material |
| CN108655546A (en) * | 2017-03-30 | 2018-10-16 | 南阳二机石油装备集团股份有限公司 | Dissimilar steel welding technology method |
| CN108515255A (en) * | 2018-04-04 | 2018-09-11 | 石家庄铁道大学 | Welding method of electric bucket rod |
| CN109702302A (en) * | 2019-01-22 | 2019-05-03 | 湖南机电职业技术学院 | Dissimilar steel welding technology |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20151202 |