CN105583497A - High strength alloy steel plate welding technology - Google Patents
High strength alloy steel plate welding technology Download PDFInfo
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- CN105583497A CN105583497A CN201410561684.2A CN201410561684A CN105583497A CN 105583497 A CN105583497 A CN 105583497A CN 201410561684 A CN201410561684 A CN 201410561684A CN 105583497 A CN105583497 A CN 105583497A
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Abstract
The invention aims to solve the technical problems of providing a high strength alloy steel plate welding technology; the technology can weld 1mm thickness H340L high strength low alloy steel plate, can save more welding materials, electric energy, and work hours, is easy to process, and can effectively improve high welding strength; the main technical parameters are listed below: a welding groove employs I-type groove and overlap welding with 15mm in length; a welding stick employs a H08MnSiA solid core welding stick with diameter of 0.8mm; a welding machine employs KRII350, and electrodes employ DC reversal connection; two sides of a welding line are cleaned and polished before welding; welding current is 90-120A, voltage is 21-25V, and speed is 450mm/min. The front side of the material is firstly welded, one welding line is welded in one time, then the backside of the material is welded, and one welding line is welded in one time; carbon dioxide gas shielded arc welding is applied in the welding process; the gas employs 80%CO2+20%Ar mixture gas, and gas flow is about 20L/min.
Description
Technical field
The invention belongs to high-strength alloy steel plate welding procedure, relate in particular to H340L high-strength alloy steel plate welding procedure.
Background technology
Welding procedureTypically refer to the technological package regulation in welding process, compriseWelding method, weldering before prepare,Welding material, welding equipment, welding sequence, welding operation, technological parameter andPost weld heat treatmentDeng. Therefore diverse ways also just has different welding procedures, has also just brought the concept of welding condition here, and we are called guaranteeWelding qualityAnd selected many physical quantitys are welding condition. Welding procedure is one of key process technology of modern ships construction engineering, and in hull construction, Ship Welding quality is to evaluate the important indicator of shipbuilding quality. Therefore, solder technology progress is of great significance the development tool that promotes shipbuilding and bridge of boats production.
H340L steel plate is a kind of low-alloy high-strength steel plate, and has stronger corrosion resistance, is applicable to do bridge of boats deck, base plate, side plate voluntarily and uses. Low-alloy steel welding has the features such as fire check, cold crack, tendency of hardenability and hydrogen induced cracking sensitiveness are strong. Bridge of boats deck, base plate, side plate etc. use H34OL sheet metal to make voluntarily, owing to using the thinner thickness of steel plate, except having common weld characteristics, burn-through, weld strength also easily occur lower than phenomenons such as timber.
The present invention, through changing technological measure, studies for the H340L low-alloy high-strength alloy-steel plate welding procedure that 1mm is thick.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of welding procedure of high-strength alloy steel plate, for the thick H340L low-alloy high-strength steel plate welding of 1mm, can save more welding material, electric energy and man-hour, and be easy to processing, can effectively improve weld strength.
In order to address the above problem, the invention provides high-strength alloy steel plate welding procedure, it is characterized in that: be the H340L low-alloy high-strength steel plate welding that 1mm is thick for mother metal, comprise following technological parameter and step:
Bevel for welding: I type groove, joint welding, joint welding length is 15mm;
Welding wire: H08Mn2SiA solid core welding wire, diameter phi 0.8mm;
Welding machine: KR II 350, electrode: DC reverse connection;
Welding pretreatment: butt welded seam both sides are cleared up, polishing work;
Welding parameter: welding current 90～120A, voltage 21V～25V, the about 450mm/min of speed;
Welding sequence: first material front is welded, adopt a welded seam together, then material reverse side is welded, adopt a welded seam together;
Welding manner: carbon dioxide gas arc welding, gas adopts 80%CO2+ 20%Ar mist, the about 20L/min of gas flow.
Preferably, described front welding and reverse side welding, the welding procedure adopting is identical.
Preferably, while carrying out welding operation, baffle plate is set around; Forbid to use scavenger fan and electric fan.
Realize by changing technological process the carbon dioxide gas arc welding welding procedure that thickness of slab is the H340L sheet material of 1mm; by the measure such as weldability test, qualification of welding procedure; the carbon dioxide gas arc welding of making high-strength steel H340L connects scheme; can enhance productivity; reduce energy consumption; improve weld strength, save raw material etc.
Brief description of the drawings
Fig. 1 is the bevel for welding in the present invention.
Fig. 2 is the position view of welded seam in the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment
Select in the present embodiment H34OL Aldecor plate that 1mm is thick as the deck materials of the bridge of boats voluntarily, its yield strength is σS>=390Mpa, tensile strength sigmab>=471Mpa, elongation after fracture δ5≥30％。
Baffle plate is around set at the construction field (site), adopts carbon dioxide gas arc welding:
1, welding material is as follows: H08Mn2SiA solid core welding wire, diameter phi 0.8mm.
2, gas adopts 80%CO2+ 20%Ar mist, the about 20L/min of gas flow.
3, as shown in Figure 2, taking interface length is 15mm, first material front is welded for welding sequence and groove yardstick, adopt a welded seam together, material reverse side is welded again, adopt a welded seam together, positive welding is identical with the technique that reverse side welding machine adopts.
4, welding variables: welding current 90～120A, voltage 21V～25V, speed of welding is controlled at 450mm/min; Select KR II 350 welding machines, electrode reversal connection.
Before welding, grinding process is carried out in the both sides of the weld seam of butt welded seam, after having welded, the intensity of welding junction is tested accordingly, and test result is as follows:
Illustrate by detection, adopt after welding procedure provided by the invention, the hot strength of the intensity mother metal of its welding junction itself.
It should be noted last that, above detailed description of the invention is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (3)
1. high-strength alloy steel plate welding procedure, is characterized in that: be the H340L low-alloy high-strength steel plate welding that 1mm is thick for mother metal, comprise following technological parameter and step:
Bevel for welding: I type groove, joint welding, the lap of splice is 15mm;
Welding wire: H08Mn2SiA solid core welding wire, diameter phi 0.8mm;
Welding machine: KR II 350, electrode: DC reverse connection;
Welding pretreatment: butt welded seam both sides are cleared up, polishing work;
Welding parameter: welding current 90～120A, voltage 21V～25V, the about 450mm/min of speed;
Welding sequence: first material front is welded, adopt a welded seam together, then material reverse side is welded, adopt a welded seam together;
Welding manner: carbon dioxide gas arc welding, gas adopts 80%CO2+ 20%Ar mist, the about 20L/min of gas flow.
2. high-strength alloy steel plate welding procedure according to claim 1, is characterized in that: described front welding and reverse side welding, the welding procedure adopting is identical.
3. high-strength alloy steel plate welding procedure according to claim 1, is characterized in that: preferred, while carrying out welding operation, baffle plate is set around, and forbid to use scavenger fan and electric fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410561684.2A CN105583497A (en) | 2014-10-21 | 2014-10-21 | High strength alloy steel plate welding technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410561684.2A CN105583497A (en) | 2014-10-21 | 2014-10-21 | High strength alloy steel plate welding technology |
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| CN105583497A true CN105583497A (en) | 2016-05-18 |
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| CN201410561684.2A Pending CN105583497A (en) | 2014-10-21 | 2014-10-21 | High strength alloy steel plate welding technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539076A (en) * | 2019-09-19 | 2019-12-06 | 天津玛斯特车身装备技术有限公司 | protective gas for laser welding and laser welding method using same |
| CN113664330A (en) * | 2021-08-31 | 2021-11-19 | 江南造船(集团)有限责任公司 | Continuous welding method for transition area of corrugated plate and angle steel of fuel tank |
| CN115180092A (en) * | 2022-08-18 | 2022-10-14 | 上海外高桥造船有限公司 | Hull sheet sectional connection method and hull |
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| JPS56134078A (en) * | 1980-03-19 | 1981-10-20 | Mitsubishi Electric Corp | Consumable electrode type gas shielded arc welding method |
| JPH11291040A (en) * | 1998-04-09 | 1999-10-26 | Nippon Sanso Kk | Shielding gas for fillet welding of lap joint of steel sheet and method for fillet welding of lap joint using the same gas |
| JP2002120072A (en) * | 2000-10-17 | 2002-04-23 | Nippon Steel Corp | Method for lap arc welding for thin steel member having excellent appearance, shape, and joint strength of weld zone |
| CN101396755A (en) * | 2007-12-26 | 2009-04-01 | 广东顺安达太平货柜有限公司 | Mixed gas welding method for light-gage welding |
| CN101623789A (en) * | 2008-07-11 | 2010-01-13 | 胜狮货柜技术研发（上海）有限公司 | Method for welding thin plate by using mixing gas |
| CN102179602A (en) * | 2011-04-08 | 2011-09-14 | 机械科学研究院哈尔滨焊接研究所 | Non-preheating structural gradient matching welding process for dilute alloy high-strength steel with yield strength of 800MPa |
| CN102441727A (en) * | 2011-11-16 | 2012-05-09 | 南京钢铁股份有限公司 | Gas shielded welding method for hardened and tempered low-alloy high-strength steel |
| JP2013233557A (en) * | 2012-05-08 | 2013-11-21 | Jfe Steel Corp | Laser and arc hybrid welding method |
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2014
- 2014-10-21 CN CN201410561684.2A patent/CN105583497A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56134078A (en) * | 1980-03-19 | 1981-10-20 | Mitsubishi Electric Corp | Consumable electrode type gas shielded arc welding method |
| JPH11291040A (en) * | 1998-04-09 | 1999-10-26 | Nippon Sanso Kk | Shielding gas for fillet welding of lap joint of steel sheet and method for fillet welding of lap joint using the same gas |
| JP2002120072A (en) * | 2000-10-17 | 2002-04-23 | Nippon Steel Corp | Method for lap arc welding for thin steel member having excellent appearance, shape, and joint strength of weld zone |
| CN101396755A (en) * | 2007-12-26 | 2009-04-01 | 广东顺安达太平货柜有限公司 | Mixed gas welding method for light-gage welding |
| CN101623789A (en) * | 2008-07-11 | 2010-01-13 | 胜狮货柜技术研发（上海）有限公司 | Method for welding thin plate by using mixing gas |
| CN102179602A (en) * | 2011-04-08 | 2011-09-14 | 机械科学研究院哈尔滨焊接研究所 | Non-preheating structural gradient matching welding process for dilute alloy high-strength steel with yield strength of 800MPa |
| CN102441727A (en) * | 2011-11-16 | 2012-05-09 | 南京钢铁股份有限公司 | Gas shielded welding method for hardened and tempered low-alloy high-strength steel |
| JP2013233557A (en) * | 2012-05-08 | 2013-11-21 | Jfe Steel Corp | Laser and arc hybrid welding method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539076A (en) * | 2019-09-19 | 2019-12-06 | 天津玛斯特车身装备技术有限公司 | protective gas for laser welding and laser welding method using same |
| CN113664330A (en) * | 2021-08-31 | 2021-11-19 | 江南造船(集团)有限责任公司 | Continuous welding method for transition area of corrugated plate and angle steel of fuel tank |
| CN115180092A (en) * | 2022-08-18 | 2022-10-14 | 上海外高桥造船有限公司 | Hull sheet sectional connection method and hull |
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Application publication date: 20160518 |