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 PDF

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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
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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
Application number
CN201510484981.6A
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Chinese (zh)
Inventor
曹玉林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Fuhuang Steel Structure Co Ltd
Original Assignee
Anhui Fuhuang Steel Structure Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anhui Fuhuang Steel Structure Co Ltd filed Critical Anhui Fuhuang Steel Structure Co Ltd
Priority to CN201510484981.6A priority Critical patent/CN105108283A/en
Publication of CN105108283A publication Critical patent/CN105108283A/en
Pending legal-status Critical Current

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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

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

The welding method of a kind of xenogenesis steel plate 45 steel and ZG275-485 steel
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.
CN201510484981.6A 2015-08-10 2015-08-10 Method for welding dissimilar steel plate of 45 steel and ZG275-485 steel Pending CN105108283A (en)

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

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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)

* Cited by examiner, † Cited by third party
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 A kind of welding method of power shovel dipper
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Title
代薇等: "辽河油田SAGD注汽阀门的焊接", 《焊接技术》 *

Cited By (4)

* Cited by examiner, † Cited by third party
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 A kind of welding method of power shovel dipper
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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Application publication date: 20151202