CN106493471A - A kind of method that laser MIG Combined Weldings reduce high-carbon steel weld crack - Google Patents
A kind of method that laser MIG Combined Weldings reduce high-carbon steel weld crack Download PDFInfo
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- CN106493471A CN106493471A CN201611175251.9A CN201611175251A CN106493471A CN 106493471 A CN106493471 A CN 106493471A CN 201611175251 A CN201611175251 A CN 201611175251A CN 106493471 A CN106493471 A CN 106493471A
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- welding
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- carbon steel
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- steel material
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Classifications
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- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of method that laser MIG Combined Weldings reduce high-carbon steel weld crack, using generating laser, light-dividing device, welding gun, welding tool setup；The method be mainly electric arc combined to double focus laser and MIG together, using the different laser of two beam power densities and MIG electric arcs collective effect in soldered position, make weld seam while collective effect by 3 thermals source.Tandem arrangement, front a branch of low-power laser is adopted to carry out pre- heat fixation before and after the method laser beam；A branch of high power laser, is welded afterwards；MIG electric arcs carry out wire melting and post weld heat treatment.By rationally control thermal weld stress amount, the purpose for reducing high-strength steel weld crack is realized.
Description
Technical field
The present invention relates to a kind of method for reducing high-carbon steel weld crack, belongs to high-carbon steel welding field.
Background technology
High-carbon steel is very high due to carbon content, and quenching is more sensitive, and pure hard tendency is very big, and Jin Feng areas easily form high-carbon
Martensitic structure, due to the effect of structural stress, Shi Jinfeng areas produce cold crack.The impact of welding high temperature, crystal grain are grown up soon, carbon
Compound is easily gathered on crystal boundary, is grown up, and makes weld seam fragile, and strength of welded joint reduces.Meanwhile, shape in the welding heat affected zone
Into martensitic structure, performance is crisp and hard, causes the plasticity and toughness of weld seam to be greatly reduced.Therefore, the welding performance of high-carbon steel
Excessively poor, easily form fire check and cold crack.
At present, when welding to high-carbon steel, to be preheated before weldering, preheating temperature and interlayer temperature are controlled at 350 DEG C
More than；During multilayer welding, when ground floor weld seam is welded, small current, slow speed of welding should be adopted as far as possible, to reduce the fusion penetration of mother metal.
Half vertical position welding is used during welding, to make whole mother metal heat affected area be heated, the effect for being preheated and being incubated.
Postwelding puts workpiece as in heating furnace or slow cooling.Welding procedure is various, and the welding processing time is long.Another kind of method is exactly to adopt
Be input into less welding heat, using austenite wlding, so can without preheating and rear heat treatment, but austenite wlding
Expensive relatively costly, it is not suitable for large-scale weld job.
Content of the invention
The technical problem to be solved is the defect for overcoming prior art to exist, there is provided a kind of laser-MIG is multiple
Close weldering reduce high-carbon steel weld crack method, its purpose in order to reduce in high-carbon steel welding process occur welding cold cracking
With the quantity of fire check, welding procedure is simplified, improve the welding quality of joint.
In order to solve above-mentioned technical problem,
The method that the laser-MIG hybrid welding that the present invention is provided reduces high-carbon steel weld crack, is filled using generating laser, light splitting
Put, welding gun, welding tool setup；The method is comprised the following steps：
Step one：Before welding, high-carbon steel material surface is cleaned or is polished, the high-carbon after cleaning or polishing are completed
Steel material is fixed on welding tool setup；
Step 2：Logical shielding gas, opens laser generator and sends original laser beam, after the original laser beam enters light-dividing device
It is divided into low-power laser beam, high-power laser beam and is respectively acting on high-carbon steel material welding region；Welding gun is opened, using MIG
Arc welding, adjustment welding parameter and welding geometric parameter, weld to high-carbon steel material welding region；
Step 3：After the completion of welding, high-carbon steel material is placed on slow cooling under room temperature state.
Further, the laser generator is CO2 gas lasers, YAG solid state lasers or optical-fiber laser generator.
Further, the light-dividing device is semi-transparent semi-reflecting light splitting eyeglass.
The present invention sends beam of laser using a laser light source generator, and the Shu Jiguang enters light-dividing device and is divided into work(
Two beams that rate is differed, light-beam position are arranged in tandem.Lower-powered laser front, the larger laser of power rear, two
Shu Jiguang forms two focuses, double focus laser and MIG power supply collective effects domain welding region in surface of the work to be welded, realizes weldering
Connect purpose.
The beneficial effects of the present invention is：The present invention is divided into two beams using beam of laser contributes to energy saving, the laser
Shu Qianhou using front a branch of low-power laser beam, is preheated to welding region and is fixed, be conducive to using tandem arrangement
Absorption of the high-carbon steel material to laser；A branch of high-power laser beam, is conducive to melting welding wire afterwards；MIG electric arcs have to be carried out to welding wire
The effect of postheating is stitched in heating and butt welding, adopts inert gas shielding using the welding of MIG electric arcs, reduces Mn etc. in weld seam beneficial
The loss of metal, reduces the generation of HOT CRACK FOR WELDING P；By three thermals source to the common heating in welding position, rationally control sweating heat is defeated
Enter tissue of the amount to the thermograde change, welding stress and control weld metal of weld dimensions, realize that minimizing is high-strength
The purpose of steel weld crack.
Description of the drawings
Fig. 1 is the schematic diagram that the present invention reduces high-carbon steel weld crack method；
It is numbered in figure：1st, laser generator；2nd, light-dividing device；3rd, welding gun；4th, original laser beam；5a, low-power laser beam；
5b, high-power laser beam；6th, high-carbon steel material.
Specific embodiment
The present invention is elaborated below in conjunction with accompanying drawing：
As shown in figure 1, the method that the laser-MIG hybrid welding of the present invention reduces high-carbon steel weld crack, the method adopts laser
Emitter 1, light-dividing device 2, welding gun 3, welding tool setup；The laser generator 1 be optical-fiber laser generator, the light splitting
Device 2 is semi-transparent semi-reflecting light splitting eyeglass；
The method is comprised the following steps：
Step one：Before welding, 6 surface of high-carbon steel material is cleaned or is polished, the height after cleaning or polishing are completed
Carbon steel material 6 is fixed on welding tool setup；
Step 2：Logical shielding gas, opens laser generator 1 and sends original laser beam 4, and the original laser beam 4 enters light splitting dress
It is divided into low-power laser beam 5a, high-power laser beam 5b after putting 2 and is respectively acting on 6 welding region of high-carbon steel material；Open weldering
Rifle 3, using MIG arc weldings, adjusts welding parameter and welding geometric parameter, 6 welding region of high-carbon steel material is welded；
Step 3：After the completion of welding, high-carbon steel material 6 is placed on slow cooling under room temperature state.
Above-described embodiment technology design only to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.All according to the present invention
Equivalence changes or modification that spirit is made, should all be included within the scope of the present invention.
Claims (3)
1. a kind of method that laser-MIG hybrid welding reduces high-carbon steel weld crack, it is characterised in that：Using generating laser
（1）, light-dividing device（2）, welding gun（3）, welding tool setup；The method is comprised the following steps：
Step one：Before welding, by high-carbon steel material（6）Surface is cleaned or is polished, after cleaning or polishing are completed
High-carbon steel material（6）It is fixed on welding tool setup；
Step 2：Logical shielding gas, opens laser generator（1）Send original laser beam（4）, the original laser beam（4）Enter
Light-dividing device（2）After be divided into low-power laser beam（5a）, high-power laser beam（5b）It is respectively acting on high-carbon steel material（6）Weldering
Connect region；Open welding gun（3）, using MIG arc weldings, welding parameter and welding geometric parameter is adjusted, to high-carbon steel material（6）Weldering
Connect region welding；
Step 3：After the completion of welding, by high-carbon steel material（6）It is placed on slow cooling under room temperature state.
2. the method that laser-MIG hybrid welding according to claim 1 reduces high-carbon steel weld crack, it is characterised in that：Institute
State laser generator（1）For CO2 gas lasers, YAG solid state lasers or optical-fiber laser generator.
3. the method for high-carbon steel weld crack being reduced according to the arbitrary described laser-MIG hybrid welding of claim 1 or 2, its feature
It is：The light-dividing device（2）For semi-transparent semi-reflecting light splitting eyeglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611175251.9A CN106493471A (en) | 2016-12-19 | 2016-12-19 | A kind of method that laser MIG Combined Weldings reduce high-carbon steel weld crack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611175251.9A CN106493471A (en) | 2016-12-19 | 2016-12-19 | A kind of method that laser MIG Combined Weldings reduce high-carbon steel weld crack |
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| Publication Number | Publication Date |
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| CN106493471A true CN106493471A (en) | 2017-03-15 |
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| CN201611175251.9A Pending CN106493471A (en) | 2016-12-19 | 2016-12-19 | A kind of method that laser MIG Combined Weldings reduce high-carbon steel weld crack |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322159A (en) * | 2017-06-12 | 2017-11-07 | 广东工业大学 | Metal dual-laser beam impact forges low stress welder and method |
| CN107363399A (en) * | 2017-08-16 | 2017-11-21 | 温州大学 | A kind of method of electric arc auxiliary laser weldering |
| CN107999916A (en) * | 2017-12-11 | 2018-05-08 | 哈尔滨工业大学 | A kind of double light beam laser-TIG compound silk filling melt-brazing methods of dissimilar material |
| CN109093259A (en) * | 2017-06-21 | 2018-12-28 | 深圳市联赢激光股份有限公司 | A kind of compound wire feed welding method of dual wavelength |
| CN111975203A (en) * | 2020-06-06 | 2020-11-24 | 南京理工大学 | High-nitrogen steel double-beam laser + (N-MIG) electric arc hybrid welding method |
| CN115846871A (en) * | 2023-02-03 | 2023-03-28 | 武汉华工激光工程有限责任公司 | System and method for welding middle frame assembly of aluminum alloy mobile phone |
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| US20120006795A1 (en) * | 2010-07-07 | 2012-01-12 | General Electric Company | Hybrid laser arc welding process and apparatus |
| CN103862178A (en) * | 2014-04-01 | 2014-06-18 | 哈尔滨工业大学 | Method for removing aluminum alloy laser welding air holes |
| CN102310289B (en) * | 2010-06-30 | 2015-10-07 | 通用电气公司 | Hybrid laser arc welding technology and equipment |
| CN104985327A (en) * | 2015-07-27 | 2015-10-21 | 哈尔滨工业大学 | Bifocus laser and InFocus arc hybrid welding method |
| JP5869972B2 (en) * | 2012-06-22 | 2016-02-24 | 株式会社神戸製鋼所 | Laser-arc combined welding method |
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Patent Citations (5)
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| CN102310289B (en) * | 2010-06-30 | 2015-10-07 | 通用电气公司 | Hybrid laser arc welding technology and equipment |
| US20120006795A1 (en) * | 2010-07-07 | 2012-01-12 | General Electric Company | Hybrid laser arc welding process and apparatus |
| JP5869972B2 (en) * | 2012-06-22 | 2016-02-24 | 株式会社神戸製鋼所 | Laser-arc combined welding method |
| CN103862178A (en) * | 2014-04-01 | 2014-06-18 | 哈尔滨工业大学 | Method for removing aluminum alloy laser welding air holes |
| CN104985327A (en) * | 2015-07-27 | 2015-10-21 | 哈尔滨工业大学 | Bifocus laser and InFocus arc hybrid welding method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322159A (en) * | 2017-06-12 | 2017-11-07 | 广东工业大学 | Metal dual-laser beam impact forges low stress welder and method |
| CN109093259A (en) * | 2017-06-21 | 2018-12-28 | 深圳市联赢激光股份有限公司 | A kind of compound wire feed welding method of dual wavelength |
| CN107363399A (en) * | 2017-08-16 | 2017-11-21 | 温州大学 | A kind of method of electric arc auxiliary laser weldering |
| CN107999916A (en) * | 2017-12-11 | 2018-05-08 | 哈尔滨工业大学 | A kind of double light beam laser-TIG compound silk filling melt-brazing methods of dissimilar material |
| CN107999916B (en) * | 2017-12-11 | 2019-12-03 | 哈尔滨工业大学 | A kind of compound silk filling melt-brazing method of the double light beam laser-TIG of dissimilar material |
| CN111975203A (en) * | 2020-06-06 | 2020-11-24 | 南京理工大学 | High-nitrogen steel double-beam laser + (N-MIG) electric arc hybrid welding method |
| CN115846871A (en) * | 2023-02-03 | 2023-03-28 | 武汉华工激光工程有限责任公司 | System and method for welding middle frame assembly of aluminum alloy mobile phone |
| CN115846871B (en) * | 2023-02-03 | 2023-06-13 | 武汉华工激光工程有限责任公司 | System and method for welding middle frame assembly of aluminum alloy mobile phone |
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Application publication date: 20170315 |
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