CN103252589A - Laser-MAG (Metal-Active-Gas) compound welding method used for welding and splicing high-strength or ultrahigh-strength steel of thick plate - Google Patents
Laser-MAG (Metal-Active-Gas) compound welding method used for welding and splicing high-strength or ultrahigh-strength steel of thick plate Download PDFInfo
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Abstract
The invention discloses a laser-MAG (Metal-Active-Gas) compound welding method used for welding and splicing high-strength or ultrahigh-strength steel of a thick plate. The method aims at high-strength or ultrahigh-strength steel thick plates and utilizes a laser-MAG compound heat source to carry out single-side single-channel, single-layer and double-face molding welding; a welding part is an I-shaped groove; laser or oxyacetylene torch is adopted to pre-heat a work-piece before welding; and the temperature is kept for 20 min to 1 hour after the welding. The welding technical parameters are that the spot diameter of the laser is 0.3-1 mm, the laser power is 4-10 KW, the arc current is 200-300 A, and the arc voltage is 25.2-30 V. By improving the form of the groove of the work-piece and reserving an assembling distance and optimized welding parameters during the splicing, the splicing and welding of the ultrahigh-strength steel plate is realized; the welded joint performance is satisfied with and better than that of regular TIG (Tungsten-Inert-Gas) welding, the welding speed can be up to 60 m/h; and the welding efficiency is improved by 10 times than the regular TIG welding.
Description
Technical field
The present invention relates to laser-arc hybrid welding process slab processing technique field, be specifically related to a kind of laser-MAG complex welding method of the high-strength or super-high strength steel welding for slab.
Background technology
Along with the high-strength and fast development of super-high strength steel on space flight and aviation and other military equipment, also have higher requirement satisfying on the basis of property of welded joint welding efficiency high-strength to slab and super-high strength steel.
High-strength or the super-high strength steel splicing welding to slab, domestic industry mainly adopt bevel to reserve the conventional TIG welding of root face.Be subjected to the influence of himself technology of TIG welding, speed of welding and welding penetration, welding need be opened the multi-pass welding of Y-type groove in advance for slab, and these problems have suppressed the raising of slab welding efficient.The existing employing in the laser-arc hybrid welding process welding high-strength steel technology, a kind of welding method high-strength or the super-high strength steel slab of welding is disclosed in the Chinese patent application (publication number CN101367157A), 60 ° of " V " type grooves are opened in employing to slab welding part, or offer the mode of 60 ° of " X " type grooves, its shortcoming is that speed of welding is slow, does not bring efficiently under expensive laser-arc composite heat power supply drops into and produces.In addition, announced in the Chinese patent application (publication number CN101733564A) that a kind of weld gap control is at the laser-electric arc composite heat source high-speed welding method of the super-high strength steel of 0mm, its shortcoming is that welding assembling tolerance is low, in production reality the assembly unit before the workpiece welding is brought great difficulty and inconvenience.
Summary of the invention
In order to solve the problem that exists in the welding of high-strength or super-high strength steel in the prior art, the invention provides a kind of laser-MAG complex welding method of the high-strength or super-high strength steel welding for slab, this method is by improving the workpiece grooves form, the welding parameter of reserving the assembly building distance during splicing and optimizing, realized welding high-strength or the super-high strength steel plate, its welding line joint performance is better than conventional TIG weldering, and speed of welding can reach 60m/h, and welding efficiency is compared conventional TIG welding and improved ten times.
Technical scheme of the present invention is as follows:
A kind of laser-MAG complex welding method of the high-strength or super-high strength steel welding for slab, this method is high-strength or super-high strength steel workpiece at slab, utilizes laser-MAG composite heat power supply under protective gas it to be implemented one-sided single track individual layer double-faced forming welding; Specifically comprise the steps:
(1) splicing workpiece: open I-type groove at position to be welded, splicing spacing 0.5～2mm;
(2) preheating: workpiece is adopted laser or oxyacetylene torch preheating, 150～250 ℃ of preheat temperatures;
(3) laser-MAG composite welding: reach after the preheat temperature and namely adopt electric arc preceding along welding direction, laser beam after the complex form welding; Welding condition: laser spot diameter 0.3～1mm, laser power 4～10KW, arc current 200～300A, arc voltage 25.2～30V.
(4) postweld heat preservation: transfer weldment and to holding furnace, be incubated, be incubated 20min～1h under 150～200 ℃ of conditions, cool to room temperature then with the furnace.
When carrying out laser-MAG composite welding, 45 ° of arc welding gun and surface of the work angles, speed of welding 1～5m/min, chevilled silk spacing 3mm.
Described protective gas is argon gas (Ar) and carbon dioxide (CO
2) mist, carbon dioxide (CO
2) volume content 0～20%, shield gas flow rate 15～30L/min.
Described thickness of workpiece is 8～20mm, and the welding wire material is selected according to the workpiece material, and gage of wire 0.8～2.0mm, dry extension of electrode degree are 15mm.
The workpiece welding portion is cleaned with angle mill polishing and with acetone in that step (1) is preceding.
The invention has the beneficial effects as follows:
The present invention is guaranteeing that the welding line joint performance is better than on the basis of conventional TIG weldering, by improving the workpiece grooves form, reserve the assembly building distance during splicing, can realize the one-sided single track individual layer double-faced forming welding of the thick super-high strength steel plate of 10mm, speed of welding can reach 60m/h, and welding efficiency is compared conventional TIG welding and improved ten times.1～1.5mm splicing spacing has promoted the operability of laser-MAG composite welding in the welding of slab super-high strength steel plate.
Description of drawings
Fig. 1 is laser of the present invention-MAG complex welding method schematic diagram.
Wherein 1 is laser, and 2 is arc welding gun head, and 3 is welding wire, and 4 is the super-high strength steel plate, and 5 is weld seam.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Use laser-MAG compound welding technology in the embodiment of the invention, the YLS-10000 type optical fiber laser that laser instrument adopts German IPG to make, peak power output is 10KW, Laser Transmission adopts 200 μ m core optical fibers, laser Machining head is the YW52 of PRECITEC company, focus on 300mm, collimation 150mm.Electric arc adopts the digital IGBT inversion control DC pulse MAG/MIG CO of Japanese OTC company
2/ MAG automatic welding machine, preheating device is the heating of oxyacetylene torch rifle or laser preheating, postwelding carries out the heat tracing slow cooling to be handled.
Embodiment
As shown in Figure 1, welding base metal is the 31Si2MnCrMoVE super-high strength steel plate 4 of thickness 10mm, tensile strength 1600MPa in the present embodiment, and welding wire 3 is the H10SiMnCrNiMoV of diameter 1.2mm.At first polish off welding and go up the rust position, clean with acetone.Carry out as follows then:
(1) clamping welding sheet material: open I-type groove at position to be welded, splicing spacing 1～2mm;
(2) adopt the oxyacetylene torch preheating, the control preheat temperature is in 150 ℃～250 ℃ scopes;
(3) laser-MAG composite welding: reach after the preheat temperature and namely adopt electric arc preceding along welding direction, laser 3 after the complex form welding; Welding condition: laser spot diameter 0.3～1mm, laser power 4.2KW, arc current 280A, arc voltage 28.2V; Speed of welding 1m/min, protective gas (argon gas) flow 25L/mm, the wire feed angle is 45 °, and the chevilled silk spacing is 3mm, and the stem elongation degree is 15mm.
(4) postwelding is transferred in weldment to the 200 ℃ constant holding furnace, is incubated about 1 hour back and slowly cools to room temperature with stove.
Do not find crackle by butt welded seam 5 detections in the present embodiment, weld seam 5 positive and negative moulding are good, detect weld seam by X ray and do not have gas hole defect, and the tensile strength of welding point can reach 1680Mpa, and is suitable with substrate intensity.Maximum 30 ° of welding point angle of bend.Compare with existing TIG welding, welding efficiency is obvious, and speed reaches 60m/min, is equivalent to tens of times of raisings of conventional TIG weldering, and welding point toughness, plasticity all are better than conventional TIG.I-type groove reaches the flexibility that the tolerance in the welding spacing certain limit has been increased operation.
Above-described embodiment only is for concrete technical scheme of the present invention is described, be not intended to limit, and on using, can extend to other modification, variation, application and embodiment, think that simultaneously all such modifications, variation, application and embodiment are within the spirit and scope of the present invention.
Claims (6)
1. one kind is used for laser-MAG complex welding method that slab is high-strength or super-high strength steel welds, it is characterized in that: this method is high-strength or super-high strength steel workpiece at slab, utilizes laser-MAG composite heat power supply under protective gas it to be implemented one-sided single track individual layer double-faced forming welding; Specifically comprise the steps:
(1) splicing workpiece: open I-type groove at position to be welded, splicing spacing 0.5～2mm;
(2) preheating: workpiece is adopted laser or oxyacetylene torch preheating, 150～250 ℃ of preheat temperatures;
(3) laser-MAG composite welding: reach after the preheat temperature and namely adopt electric arc preceding along welding direction, laser beam after the complex form welding; Welding condition: laser spot diameter 0.3～1mm, laser power 4～10KW, arc current 200～300A, arc voltage 25.2～30V.
(4) postweld heat preservation: transfer weldment and to holding furnace, be incubated, be incubated 20min～1h under 150～200 ℃ of conditions, cool to room temperature then with the furnace.
2. welding method according to claim 1 is characterized in that: when carrying out laser-MAG composite welding, and 45 ° of arc welding gun and surface of the work angles, speed of welding 1～5m/min, chevilled silk spacing 3mm.
3. welding method according to claim 1, it is characterized in that: described shield gas flow rate 15～30L/min, protective gas are the mist of argon gas and carbon dioxide, carbon dioxide volume content 0～20%.
4. welding method according to claim 1, it is characterized in that: described thickness of workpiece is 8～20mm.
5. welding method according to claim 1, it is characterized in that: solder wire material is selected according to the workpiece material, gage of wire 0.8～2.0mm, dry extension of electrode degree 15mm.
6. welding method according to claim 1 is characterized in that: the workpiece welding portion is cleaned with polishing and with acetone in that step (1) is preceding.
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|---|---|---|---|
| CN2012100397619A CN103252589A (en) | 2012-02-21 | 2012-02-21 | Laser-MAG (Metal-Active-Gas) compound welding method used for welding and splicing high-strength or ultrahigh-strength steel of thick plate |
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| CN2012100397619A CN103252589A (en) | 2012-02-21 | 2012-02-21 | Laser-MAG (Metal-Active-Gas) compound welding method used for welding and splicing high-strength or ultrahigh-strength steel of thick plate |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831541A (en) * | 2013-12-05 | 2014-06-04 | 北京航星机器制造有限公司 | Laser and MIG electric arc compound welding method for high-strength steel butt joints |
| CN104551406A (en) * | 2014-12-23 | 2015-04-29 | 南车青岛四方机车车辆股份有限公司 | Activity-enhanced MAG composite welding method for side beam of railway vehicle |
| CN104690402A (en) * | 2014-10-22 | 2015-06-10 | 江苏科技大学 | Back chipping-free butt plate submerged-arc welding method |
| CN106271139A (en) * | 2016-08-25 | 2017-01-04 | 南京先进激光技术研究院 | A kind of Invar steel laser electrical arc complex welding method |
| CN106488824A (en) * | 2014-05-09 | 2017-03-08 | 海斯坦普硬高科技公司 | Method for joining two blanks |
| CN106735968A (en) * | 2016-12-02 | 2017-05-31 | 机械科学研究总院青岛分院 | A kind of laser electrical arc complex welding method |
| CN106964901A (en) * | 2017-04-11 | 2017-07-21 | 中车青岛四方机车车辆股份有限公司 | Complex welding method, draw beam and the rail vehicle with the draw beam of draw beam |
| CN107363399A (en) * | 2017-08-16 | 2017-11-21 | 温州大学 | A kind of method of electric arc auxiliary laser weldering |
| CN108672929A (en) * | 2018-07-16 | 2018-10-19 | 内蒙古第机械集团股份有限公司 | A kind of method for laser welding of super high strength armour steel |
| CN108941913A (en) * | 2018-08-14 | 2018-12-07 | 辽宁增材制造产业技术研究院有限公司 | A kind of efficient laser-MAG compound welding method of slab marine high strength steel |
| CN109641309A (en) * | 2016-08-17 | 2019-04-16 | 钢材康托尔有限责任两合公司 | Laser beam-MSG the hybrid welding process of high-intensitive Relationship between Software Fine-grained Components using targetedly induction heat transfer |
| CN110614438A (en) * | 2019-09-04 | 2019-12-27 | 上海工程技术大学 | Laser-arc hybrid welding method for high-strength steel in butt joint gap |
| CN110722265A (en) * | 2019-11-19 | 2020-01-24 | 中国科学院合肥物质科学研究院 | Method for controlling high-energy beam welding deformation |
| CN111496383A (en) * | 2020-04-21 | 2020-08-07 | 上海锐戎激光焊接技术有限公司 | Thick-wall titanium alloy laser-MIG composite welding priming welding method and device |
| CN112222653A (en) * | 2020-10-20 | 2021-01-15 | 中国石油天然气集团有限公司 | Welding method of layered bimetal composite plate |
| CN113305419A (en) * | 2021-05-25 | 2021-08-27 | 苏州科韵激光科技有限公司 | Automatic accurate positioner |
| CN113333957A (en) * | 2021-05-21 | 2021-09-03 | 南京钢铁股份有限公司 | laser-MAG (metal active gas) arc hybrid welding method for wide thin plate for ship |
| CN113814566A (en) * | 2021-09-18 | 2021-12-21 | 重庆溯联塑胶股份有限公司 | New energy automobile cooling system connects laser welding mechanism |
| CN114505566A (en) * | 2022-03-18 | 2022-05-17 | 西部超导材料科技股份有限公司 | Welding method for inhibiting cracks of titanium alloy ingots after welding |
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| CN103831541A (en) * | 2013-12-05 | 2014-06-04 | 北京航星机器制造有限公司 | Laser and MIG electric arc compound welding method for high-strength steel butt joints |
| US10471544B2 (en) | 2014-05-09 | 2019-11-12 | Autotech Engineering A.I.E. | Methods for joining two blanks |
| CN106488824A (en) * | 2014-05-09 | 2017-03-08 | 海斯坦普硬高科技公司 | Method for joining two blanks |
| CN106488824B (en) * | 2014-05-09 | 2019-11-08 | 海斯坦普硬高科技公司 | Method for joining two blanks |
| CN104690402A (en) * | 2014-10-22 | 2015-06-10 | 江苏科技大学 | Back chipping-free butt plate submerged-arc welding method |
| CN104690402B (en) * | 2014-10-22 | 2016-08-17 | 江苏科技大学 | A kind of buttcover plate submerged-arc welding method exempting from back chipping |
| CN104551406A (en) * | 2014-12-23 | 2015-04-29 | 南车青岛四方机车车辆股份有限公司 | Activity-enhanced MAG composite welding method for side beam of railway vehicle |
| CN104551406B (en) * | 2014-12-23 | 2016-08-24 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle curb girder strengthens activity laser MAG complex welding method |
| CN109641309A (en) * | 2016-08-17 | 2019-04-16 | 钢材康托尔有限责任两合公司 | Laser beam-MSG the hybrid welding process of high-intensitive Relationship between Software Fine-grained Components using targetedly induction heat transfer |
| CN106271139A (en) * | 2016-08-25 | 2017-01-04 | 南京先进激光技术研究院 | A kind of Invar steel laser electrical arc complex welding method |
| CN106735968A (en) * | 2016-12-02 | 2017-05-31 | 机械科学研究总院青岛分院 | A kind of laser electrical arc complex welding method |
| CN106964901A (en) * | 2017-04-11 | 2017-07-21 | 中车青岛四方机车车辆股份有限公司 | Complex welding method, draw beam and the rail vehicle with the draw beam of draw beam |
| CN106964901B (en) * | 2017-04-11 | 2019-05-21 | 中车青岛四方机车车辆股份有限公司 | Complex welding method, draw beam and the rail vehicle with the draw beam of draw beam |
| CN107363399A (en) * | 2017-08-16 | 2017-11-21 | 温州大学 | A kind of method of electric arc auxiliary laser weldering |
| CN108672929A (en) * | 2018-07-16 | 2018-10-19 | 内蒙古第机械集团股份有限公司 | A kind of method for laser welding of super high strength armour steel |
| CN108941913A (en) * | 2018-08-14 | 2018-12-07 | 辽宁增材制造产业技术研究院有限公司 | A kind of efficient laser-MAG compound welding method of slab marine high strength steel |
| CN110614438A (en) * | 2019-09-04 | 2019-12-27 | 上海工程技术大学 | Laser-arc hybrid welding method for high-strength steel in butt joint gap |
| CN110722265A (en) * | 2019-11-19 | 2020-01-24 | 中国科学院合肥物质科学研究院 | Method for controlling high-energy beam welding deformation |
| CN111496383A (en) * | 2020-04-21 | 2020-08-07 | 上海锐戎激光焊接技术有限公司 | Thick-wall titanium alloy laser-MIG composite welding priming welding method and device |
| CN112222653A (en) * | 2020-10-20 | 2021-01-15 | 中国石油天然气集团有限公司 | Welding method of layered bimetal composite plate |
| CN113333957A (en) * | 2021-05-21 | 2021-09-03 | 南京钢铁股份有限公司 | laser-MAG (metal active gas) arc hybrid welding method for wide thin plate for ship |
| CN113305419A (en) * | 2021-05-25 | 2021-08-27 | 苏州科韵激光科技有限公司 | Automatic accurate positioner |
| CN113814566A (en) * | 2021-09-18 | 2021-12-21 | 重庆溯联塑胶股份有限公司 | New energy automobile cooling system connects laser welding mechanism |
| CN113814566B (en) * | 2021-09-18 | 2023-09-29 | 重庆溯联塑胶股份有限公司 | New energy automobile cooling system connects laser welding mechanism |
| CN114505566A (en) * | 2022-03-18 | 2022-05-17 | 西部超导材料科技股份有限公司 | Welding method for inhibiting cracks of titanium alloy ingots after welding |
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Application publication date: 20130821 |