CN103464909A - Laser-high-frequency hybrid welding device and welding method thereof - Google Patents
Laser-high-frequency hybrid welding device and welding method thereof Download PDFInfo
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- CN103464909A CN103464909A CN 201310384350 CN201310384350A CN103464909A CN 103464909 A CN103464909 A CN 103464909A CN 201310384350 CN201310384350 CN 201310384350 CN 201310384350 A CN201310384350 A CN 201310384350A CN 103464909 A CN103464909 A CN 103464909A
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Abstract
The invention discloses a laser-high-frequency hybrid welding device used for machining a precision welded pipe. The laser-high-frequency hybrid welding device comprises a laser welding mechanism, a high frequency welding mechanism and an extruding roller, and produces a laser beam to irradiate on a precision pipe workpiece to weld through a laser welding head; then the precision pipe workpiece is pressed through the extruding roller. The high frequency welding mechanism comprises a first heat induction coil and a second heat induction coil which are respectively located on opposite sides of the laser welding head and which are used for heating the precision pipe workpiece before and after a laser welding region. The invention further provides a welding method of the laser-high-frequency hybrid welding device. By the aid of the device, a welded workpiece can be preheated before laser welding, cooling speed after laser welding can be reduced, and defects of air holes and cracks caused by direct laser welding can be reduced.
Description
Technical field
The present invention relates to the Precision Welded Pipe processing technique field, relate in particular to a kind of laser-high frequency composite welding apparatus and welding method thereof, for the processing precise welded tube.
Background technology
Precision Welded Pipe is that production technology is simple with weld the steel pipe of making after cans with steel, and description is many, and intensity is higher than seamless steel pipe.Precision Welded Pipe is the result further improved on general welded tube basis, it is the fine product in the welded tube product, permissible accuracy is higher than the precision of common welded tube, technique has strict requirement, it is poor generally to take off, quality reaches the level of accurate seamless thin wall pipe fully, is mainly used in the every field such as chemical industry, weaving, machinery, instrument, aviation, automobile.
Laser weld is compared owing to having following features (a 1) laser power density high with the normal welding method, can be welded high-melting-point, infusibility gold bits or two kinds of different gold bits materials; (2) focal beam spot is little, and firing rate is fast, and action time is short, and heat affected area is little, and thermal deformation can be ignored; (3) laser weld belongs to noncontact welding, machinery-free stress and mechanical deformation; (4) laser soldering device easily and computer interconnection, can accurately be located; (5) laser weld can be carried out in atmosphere, non-environmental-pollution; Therefore in the manufacturing process that laser weld is widely used with Precision Welded Pipe.
But, because produce very high peak temperature and thermograde during laser weld, make the mother metal vaporization, easy generation can absorb the plasma cloud with scattering laser simultaneously, so, single thermal source laser weld energy conversion efficiency and utilization rate are low, welding process is unstable, and interface easily misplaces, and easily produces pore, loose, welding depression, and the cooling velocity of laser weld is very fast, easily cracks etc.Laser and other thermals source, as compound as electric arc, plasma arc, high-frequency induction or other a branch of special laser, jointly workpiece is welded, can change the distribution of power density on time and space, improve the mother metal Temperature Distribution of heat effect and influence area, reduce or eliminate plasma cloud, improve the absorptivity of workpiece to laser, increase welding penetration, improve cooling condition, transformation tissue and the stress state of weld seam and heat affected area, what have can also relax mother metal end face interface precision.Therefore exploring a kind of laser compound welding device and welding method that is suitable for the Precision Welded Pipe processing technology extremely is necessary.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency in prior art, a kind of laser-high frequency composite welding apparatus and welding method thereof is provided, can before laser weld, to welding work pieces, carry out preheating, and slow down cooling velocity after laser weld, reduce the pore and the crackle that directly use laser weld to cause bad.
The technical solution adopted for the present invention to solve the technical problems is: a kind of laser-high frequency composite welding apparatus, for the processing precise welded tube, comprise laser weld mechanism, high-frequency welding mechanism and compression roller, described laser weld mechanism produces a laser beam and shines on the Precision Welded Pipe workpiece described Precision Welded Pipe workpiece is welded by laser welding system, and then through the compression roller pressing; Wherein, described high-frequency welding mechanism comprises the first thermoinduction coil and the second thermoinduction coil, described the first thermoinduction coil and the second thermoinduction coil lay respectively at the relative both sides of described laser welding system, are respectively used to the Precision Welded Pipe workpiece before and after the laser weld zone is heated; Wherein, the operating frequency of described the first thermoinduction coil is 250～350KHz, and its current density is 8～12A/mm
2; The operating frequency of described the second thermoinduction coil is 250～350KHz, and its current density is 12～15A/mm
2.
Preferably, described Precision Welded Pipe is X70, X80, X90 or X100 pipeline steel tube.
Preferably, described laser weld mechanism power density is 10
6～10
7w/cm
2.
Preferably, the light source of described laser weld mechanism is CO
2gas laser or YAG solid state laser.
Another aspect of the present invention is to provide a kind of laser-high frequency complex welding method, and for the processing precise welded tube, it comprises step:
(a) apply the first thermoinduction coil the Precision Welded Pipe workpiece is heated, before the described Precision Welded Pipe workpiece of laser weld, to carry out preheating, the operating frequency of wherein said the first thermoinduction coil is 250～350KHz, and its current density is 8～12A/mm
2;
(b) the Precision Welded Pipe workpiece of application laser weld mechanism after to preheating welded, and wherein, described laser weld mechanism power density is 106～107W/cm
2, the light source of described laser weld mechanism is CO
2gas laser or YAG solid state laser;
(c) the Precision Welded Pipe workpiece after laser weld is carried out to pressing by compression roller;
(d) apply the Precision Welded Pipe workpiece of the second thermoinduction coil after to pressing and heated, to reduce the cooling velocity of Precision Welded Pipe workpiece, the operating frequency of wherein said the second thermoinduction coil is 250～350KHz, and its current density is 12～15A/mm
2.
Preferably, the speed of welding of this welding method is 1～1.5m/min.
Preferably, the operating frequency of described the first thermoinduction coil is 250KHz, and its current density is 10A/mm
2; The operating frequency of described the second thermoinduction coil is 350KHz, and its current density is 12A/mm
2.
The invention has the beneficial effects as follows, by the first thermoinduction coil, the Precision Welded Pipe workpiece is heated, to carry out preheating and the second thermoinduction coil Precision Welded Pipe workpiece after to pressing before the described Precision Welded Pipe workpiece of laser weld, heated, to reduce the cooling velocity of Precision Welded Pipe workpiece; The absorption that improves material for laser light on the one hand, can be in the situation that the certain welding penetration that further improves of laser power, guarantee appearance of weld, improve the reliability of welding workmanship, can control the cooling velocity of welding point on the other hand, prevent the generation of weld crack, improve tissue and the performance of welding point.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of the laser-high frequency composite welding apparatus of the embodiment of the present invention;
In figure: 1. laser weld mechanism, 101. laser welding systems, 102. laser beams, 2. high-frequency welding mechanism, 201. first thermoinduction coils, 202. second thermoinduction coils, 3. Precision Welded Pipe workpiece, 4. compression roller.
The specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Figure 1, the laser that the present embodiment provides-high frequency composite welding apparatus comprises laser weld mechanism 1, high-frequency welding mechanism 2 and compression roller 4, described laser weld mechanism 1 produces a laser beam 102 and shines on Precision Welded Pipe workpiece 3 described Precision Welded Pipe workpiece 3 is welded by laser welding system 101, and then through compression roller 4 pressings; Wherein, described high-frequency welding mechanism 2 comprises the first thermoinduction coil 201 and the second thermoinduction coil 202, described the first thermoinduction coil 201 and the second thermoinduction coil 202 lay respectively at the relative both sides of described laser welding system 101, are respectively used to the Precision Welded Pipe workpiece 3 before and after the laser weld zone is heated; Wherein, the operating frequency of described the first thermoinduction coil 201 is 250～350KHz, and its current density is 8～12A/mm
2; The operating frequency of described the second thermoinduction coil 202 is 250～350KHz, and its current density is 12～15A/mm
2.
Wherein, described laser weld mechanism power density is 10
6～10
7w/cm
2; The light source of described laser weld mechanism is CO
2gas laser or YAG solid state laser.
The laser that the present embodiment provides-high frequency composite welding apparatus is mainly used in the processing technology of X70, X80, X90 or X100 pipeline steel tube.
Adopt laser as above-high frequency composite welding apparatus to carry out the method for processing precise welded tube as described below, comprise step:
(a) applying 201 pairs of Precision Welded Pipe workpiece 3 of the first thermoinduction coil is heated, before the described Precision Welded Pipe workpiece 3 of laser weld, to carry out preheating, the scope of the operating frequency of wherein said the first thermoinduction coil 201 can be chosen as 250～350KHz, and the scope of its current density can be chosen as 8～12A/mm
2; In the present embodiment, the operating frequency of described the first thermoinduction coil 201 is 250KHz, and its current density is 10A/mm
2;
(b) the Precision Welded Pipe workpiece 3 after application laser weld mechanism 1 pair of preheating is welded, and wherein, described laser weld mechanism 1 power density is 10
6～10
7w/cm
2, the light source of described laser weld mechanism is CO
2gas laser or YAG solid state laser;
(c) the Precision Welded Pipe workpiece 3 after laser weld is carried out to pressing by compression roller 4;
(d) apply and Precision Welded Pipe workpiece 3 after 202 pairs of pressings of thermoinduction coil heated, to reduce the cooling velocity of Precision Welded Pipe workpiece 3, the operating frequency of wherein said the second thermoinduction coil 202 can be chosen as 250～350KHz, and its current density can be chosen as 12～15A/mm
2, in the present embodiment, the operating frequency of described the second thermoinduction coil 202 is 350KHz, its current density is 12A/mm
2.
In welding method provided by the invention, speed of welding can be chosen as 1～1.5m/min.
Comprehensive the above, the present invention is heated the Precision Welded Pipe workpiece by the first thermoinduction coil, to carry out preheating and the second thermoinduction coil Precision Welded Pipe workpiece after to pressing before the described Precision Welded Pipe workpiece of laser weld, heated, to reduce the cooling velocity of Precision Welded Pipe workpiece; The absorption that improves material for laser light on the one hand, can be in the situation that the certain welding penetration that further improves of laser power, guarantee appearance of weld, improve the reliability of welding workmanship, can control the cooling velocity of welding point on the other hand, prevent the generation of weld crack, improve tissue and the performance of welding point.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, the relevant staff can, in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to the claim scope.
Claims (9)
1. laser-high frequency composite welding apparatus, for the processing precise welded tube, comprise laser weld mechanism (1), high-frequency welding mechanism (2) and compression roller (4), described laser weld mechanism (1) produces a laser beam (102) and shines on Precision Welded Pipe workpiece (3) described Precision Welded Pipe workpiece (3) is welded by laser welding system (101), and then through compression roller (4) pressing; It is characterized in that, described high-frequency welding mechanism (2) comprises the first thermoinduction coil (201) and the second thermoinduction coil (202), described the first thermoinduction coil (201) and the second thermoinduction coil (202) lay respectively at the relative both sides of described laser welding system (101), are respectively used to the Precision Welded Pipe workpiece (3) before and after the laser weld zone is heated; Wherein, the operating frequency of described the first thermoinduction coil (201) is 250～350KHz, and its current density is 8～12A/mm
2; The operating frequency of described the second thermoinduction coil (202) is 250～350KHz, and its current density is 12～15A/mm
2.
2. laser according to claim 1-high frequency composite welding apparatus, is characterized in that, described Precision Welded Pipe is X70, X80, X90 or X100 pipeline steel tube.
3. laser according to claim 1-high frequency composite welding apparatus, is characterized in that, described laser weld mechanism (1) power density is 10
6～10
7w/cm
2.
4. laser according to claim 1-high frequency composite welding apparatus, is characterized in that, the operating frequency of described the first thermoinduction coil (201) is 250KHz, and its current density is 10A/mm
2; The operating frequency of described the second thermoinduction coil (202) is 350KHz, and its current density is 12A/mm
2.
5. laser according to claim 1-high frequency composite welding apparatus, is characterized in that, the light source of described laser weld mechanism is CO
2gas laser or YAG solid state laser.
6. laser-high frequency complex welding method, for the processing precise welded tube, is characterized in that, comprises step:
(a) applying the first thermoinduction coil (201) is heated Precision Welded Pipe workpiece (3), to carry out preheating the described Precision Welded Pipe workpiece of laser weld (3) is front, the operating frequency of wherein said the first thermoinduction coil (201) is 250～350KHz, and its current density is 8～12A/mm
2;
(b) application laser weld mechanism (1) is welded the Precision Welded Pipe workpiece (3) after preheating, and wherein, described laser weld mechanism (1) power density is 10
6～10
7w/cm
2, the light source of described laser weld mechanism is CO
2gas laser or YAG solid state laser;
(c) the Precision Welded Pipe workpiece (3) after laser weld is carried out to pressing by compression roller (4);
(d) apply and thermoinduction coil (202) is heated the Precision Welded Pipe workpiece (3) after pressing, to reduce the cooling velocity of Precision Welded Pipe workpiece (3), the operating frequency of wherein said the second thermoinduction coil (202) is 250～350KHz, and its current density is 12～15A/mm
2.
7. laser according to claim 6-high frequency complex welding method, is characterized in that, the speed of welding of this welding method is 1～1.5m/min.
8. laser according to claim 6-high frequency complex welding method, is characterized in that, the operating frequency of described the first thermoinduction coil (201) is 250KHz, and its current density is 10A/mm
2; The operating frequency of described the second thermoinduction coil (202) is 350KHz, and its current density is 12A/mm
2.
9. laser according to claim 6-high frequency complex welding method, is characterized in that, described Precision Welded Pipe is X70, X80, X90 or X100 pipeline steel tube.
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|---|---|---|---|
| CN 201310384350 CN103464909A (en) | 2013-08-29 | 2013-08-29 | Laser-high-frequency hybrid welding device and welding method thereof |
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|---|---|---|---|
| CN 201310384350 CN103464909A (en) | 2013-08-29 | 2013-08-29 | Laser-high-frequency hybrid welding device and welding method thereof |
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Family
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552921A (en) * | 2014-12-31 | 2015-04-29 | 东莞理工学院 | Plastic laser hybrid welding system |
| CN107081528A (en) * | 2017-06-27 | 2017-08-22 | 重庆科技学院 | A kind of method for laser welding of high-grade pipe line steel |
| CN107803593A (en) * | 2017-09-27 | 2018-03-16 | 北京科技大学 | A kind of high frequency lasers silk filling composite welding apparatus and method |
| CN108436463A (en) * | 2017-01-10 | 2018-08-24 | 温州职业技术学院 | A kind of high-frequency induction laserHybrid welding connection device of socket hollow copper tubing |
| CN108608113A (en) * | 2018-05-10 | 2018-10-02 | 上海交通大学 | A kind of adaptive laser soldering device and application method based on cooling velocity |
| CN112404658A (en) * | 2020-10-19 | 2021-02-26 | 中国石油天然气集团有限公司 | Remote control-based in-service pipeline arc 3D printing repair system and method |
| CN114559149A (en) * | 2022-02-10 | 2022-05-31 | 湖北文理学院 | Welding equipment, welding system and welding control method |
| CN114871566A (en) * | 2022-04-15 | 2022-08-09 | 湖北文理学院 | Welding equipment with partitioned auxiliary heating device, welding system and welding control method |
| CN116689963A (en) * | 2023-06-25 | 2023-09-05 | 浙江摩多巴克斯科技股份有限公司 | Laser welding process for high-strength steel pipe |
-
2013
- 2013-08-29 CN CN 201310384350 patent/CN103464909A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552921A (en) * | 2014-12-31 | 2015-04-29 | 东莞理工学院 | Plastic laser hybrid welding system |
| CN108436463B (en) * | 2017-01-10 | 2019-05-28 | 温州职业技术学院 | A kind of high-frequency induction laserHybrid welding connection device being socketed hollow copper tubing |
| CN108436463A (en) * | 2017-01-10 | 2018-08-24 | 温州职业技术学院 | A kind of high-frequency induction laserHybrid welding connection device of socket hollow copper tubing |
| CN107081528A (en) * | 2017-06-27 | 2017-08-22 | 重庆科技学院 | A kind of method for laser welding of high-grade pipe line steel |
| CN107803593B (en) * | 2017-09-27 | 2019-12-13 | 北京科技大学 | high-frequency-laser wire filling composite welding device and method |
| CN107803593A (en) * | 2017-09-27 | 2018-03-16 | 北京科技大学 | A kind of high frequency lasers silk filling composite welding apparatus and method |
| CN108608113A (en) * | 2018-05-10 | 2018-10-02 | 上海交通大学 | A kind of adaptive laser soldering device and application method based on cooling velocity |
| CN112404658A (en) * | 2020-10-19 | 2021-02-26 | 中国石油天然气集团有限公司 | Remote control-based in-service pipeline arc 3D printing repair system and method |
| CN114559149A (en) * | 2022-02-10 | 2022-05-31 | 湖北文理学院 | Welding equipment, welding system and welding control method |
| CN114559149B (en) * | 2022-02-10 | 2024-03-12 | 湖北文理学院 | Welding equipment, welding system and welding control method |
| CN114871566A (en) * | 2022-04-15 | 2022-08-09 | 湖北文理学院 | Welding equipment with partitioned auxiliary heating device, welding system and welding control method |
| CN114871566B (en) * | 2022-04-15 | 2024-03-22 | 湖北文理学院 | Welding equipment with partitioned auxiliary heating device, welding system and welding control method |
| CN116689963A (en) * | 2023-06-25 | 2023-09-05 | 浙江摩多巴克斯科技股份有限公司 | Laser welding process for high-strength steel pipe |
| CN116689963B (en) * | 2023-06-25 | 2023-12-01 | 浙江摩多巴克斯科技股份有限公司 | Laser welding process for high-strength steel pipe |
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Application publication date: 20131225 |