CN102922137B - Laser no-filling penetration weld seal welding process for T-shaped welding head of steel plate - Google Patents
Laser no-filling penetration weld seal welding process for T-shaped welding head of steel plate Download PDFInfo
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- CN102922137B CN102922137B CN201210453204.1A CN201210453204A CN102922137B CN 102922137 B CN102922137 B CN 102922137B CN 201210453204 A CN201210453204 A CN 201210453204A CN 102922137 B CN102922137 B CN 102922137B
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Abstract
The invention discloses a laser no-filling penetration weld seal welding process for a T-shaped welding head of a steel plate. The laser no-filling penetration weld seal welding process comprises the steps as follows: carrying out laser no-filling penetration weld on a weld joint overlapping part of a first workpiece and a second workpiece from the rear surface of the first workpiece by adopting a laser welding machine so as to form a weld joint; carrying out laser no-filling penetration weld in the perpendicular direction of the weld joint for multiple times so as to form a plurality of perpendicular weld joints perpendicular to the weld joint, wherein a gap exists between the adjacent perpendicular weld joints; and carrying out weld joint leak detection on the weld joint, and when a weld joint leak point is found, manually repairing the weld joint between the adjacent perpendicular weld joints in a position where the weld joint leak point is. With the adoption of the laser no-filling penetration weld seal welding process, the phenomenon of welding the whole weld joint is avoided, the difficulty and the workload of manual repair welding are lowered, and the welding deformation of manual repair welding when the whole weld joint is weld is also reduced at the same time, thereby enabling the weld joint to be beautiful.
Description
Technical field
The laser that the present invention relates to a kind of steel plate T-shaped plumb joint penetrates weldering seal welding technique without filling, belongs to welding technology field.
Background technology
At present, laser welding technology has been widely used in the welding production of steel plate, and when thick plates, multiplex C02 laser instrument, generally adopts Nd:YAG laser instrument during plate sheet welding.This is because C02 laser power is large, can obtain larger fusion penetration, YAG laser power is little, can not export the energy needed for thick plates.Laser weld can adopt continuously or pulse laser beam is realized, and the principle of laser weld can be divided into heat-conduction-type to weld and Laser Deep Penetration Welding.It is heat conduction welding that power density is less than 104 ~ 105 W/cm2, and now fusion penetration is shallow, speed of welding is slow; When power density is greater than 105 ~ 107 W/cm2, metal surface, by the recessed one-tenth of heat effect " hole ", forms deep penetration welding, has the advantages that speed of welding is fast, depth-to-width ratio is large.Steel plate laser is without filling deep penetration welding technology, generally be applied to the anti-butt welding of steel and stitch welding, now also start the welding being applied to steel plate T-shaped plumb joint, but will be formed " pore " when weld gap is greater than 0.1mm or laser power is unstable, cause and penetrate welding line and can not seal discovery leak source, due to palpus repair welding whole piece weld seam when welding space constraints needs to find that fusion penetration is inadequate during manual repair welding, repair welding two ends are even wanted to extend weld seam around, which increase difficulty and the workload of manual repair welding, repair welding whole piece weld seam, welding deformation is also large.
Summary of the invention
Technical problem to be solved by this invention is the defect overcoming prior art, a kind of laser of steel plate T-shaped plumb joint is provided to penetrate weldering seal welding technique without filling, avoiding after adopting this technique when weld seam leak detection finds weld seam leak source even wants repair welding two ends to extend the phenomenon of weld seam around because the welding penetration of manual repair welding must carry out repair welding to whole piece weld seam not, alleviate difficulty and the workload of manual repair welding, decrease the welding deformation of manual repair welding during welding whole piece weld seam simultaneously, make weld seam attractive in appearance.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of laser of steel plate T-shaped plumb joint penetrates weldering seal welding technique without filling, the step of this technique is as follows: adopt laser welder to carry out laser from the back side of the first workpiece to the weld seam lap-joint of the first workpiece and second workpiece and penetrate weldering without filling, form weld seam; Weld seam vertical direction is carried out repeatedly laser and penetrates weldering without filling, form some the vertical welds perpendicular to weld seam, and between adjacent vertical weld, there is interval; Butt welded seam carries out weld seam leak detection, when finding weld seam leak source, and the weld seam between the neighboring vertical weld seam at this weld seam leak source place of manual repair welding.
After have employed technique scheme, the present invention is when weld seam leak detection finds weld seam leak source, the starting the arc and receipts arc on the vertical weld at the weld seam two ends place at this weld seam leak source place is only needed to carry out manual repair welding, extend the weld seam of surrounding to two ends without the need to manual repair welding whole piece weld seam or repair welding, alleviate difficulty and the workload of manual repair welding, decrease the welding deformation of manual repair welding during welding whole piece weld seam simultaneously, make weld seam attractive in appearance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram after the laser weld of steel plate T-shaped plumb joint of the present invention;
Fig. 2 is the top view of Fig. 1.
Detailed description of the invention
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation,
As shown in Figure 1, 2, a kind of laser of steel plate T-shaped plumb joint penetrates weldering seal welding technique without filling, the step of this technique is as follows: adopt laser welder to carry out laser from the back side of the first workpiece 1 to the weld seam lap-joint of the first workpiece 1 and second workpiece 2 and penetrate weldering without filling, form weld seam 12; Weld seam 12 vertical direction is carried out four laser and penetrates weldering without filling, form four vertical welds 3 perpendicular to weld seam 12, and between adjacent vertical weld 3, there is interval; Butt welded seam 12 carries out weld seam leak detection, when finding weld seam leak source, and the weld seam 12 between the neighboring vertical weld seam 3 at this weld seam leak source place of manual repair welding.
The thickness of the first workpiece 1 is 2 ~ 4mm, when the thickness of second workpiece 2 is greater than 2.5mm, laser below can be adopted without filling the welding condition penetrating weldering: bonding power 4000W; Speed of welding 1500mm/min; During laser weld, nozzle is 9 ~ 11 mm from the welding and assembling height of weld seam; And ensure that the Laser Deep Penetration Welding degree of depth is 5 ~ 6 mm.
The present invention is when weld seam leak detection finds weld seam leak source, the starting the arc and receipts arc on the vertical weld 3 at the weld seam two ends place at this weld seam leak source place is only needed to carry out manual repair welding, extend the weld seam of surrounding to two ends without the need to manual repair welding whole piece weld seam 12 or repair welding, alleviate difficulty and the workload of manual repair welding, decrease the welding deformation of manual repair welding during welding whole piece weld seam 12 simultaneously, make weld seam attractive in appearance.
The quantity of the vertical weld 3 in embodiment is not limited to four, ensures good looking appearance.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. the laser of steel plate T-shaped plumb joint penetrates a weldering seal welding technique without filling, it is characterized in that the step of this technique is as follows:
A) adopt laser welder to carry out laser from the back side of the first workpiece (1) to the weld seam lap-joint of the first workpiece (1) and second workpiece (2) and penetrate weldering without filling, formation weld seam (12);
B) in weld seam (12) vertical direction, carry out repeatedly laser and penetrate weldering without filling, form some the vertical welds perpendicular to weld seam (12) (3), and between adjacent vertical weld (3), there is interval;
C) butt welded seam (12) carries out weld seam leak detection, when finding weld seam leak source, and the weld seam (12) between the neighboring vertical weld seam (3) at this weld seam leak source place of manual repair welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210453204.1A CN102922137B (en) | 2012-11-13 | 2012-11-13 | Laser no-filling penetration weld seal welding process for T-shaped welding head of steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210453204.1A CN102922137B (en) | 2012-11-13 | 2012-11-13 | Laser no-filling penetration weld seal welding process for T-shaped welding head of steel plate |
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| Publication Number | Publication Date |
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| CN102922137A CN102922137A (en) | 2013-02-13 |
| CN102922137B true CN102922137B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210453204.1A Active CN102922137B (en) | 2012-11-13 | 2012-11-13 | Laser no-filling penetration weld seal welding process for T-shaped welding head of steel plate |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382417B (en) * | 2015-12-02 | 2017-03-29 | 中国航空工业集团公司北京航空制造工程研究所 | The method of aluminium lithium alloy light sheet T type joint xenogenesis Mode for Laser welding |
| CN107639325B (en) * | 2017-09-27 | 2020-07-03 | 阳江市五金刀剪产业技术研究院 | Method for welding blade and cover plate |
| CN109926743A (en) * | 2019-04-01 | 2019-06-25 | 山东电力设备有限公司 | The welding method and welding structure of antiseep weld seam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1867418A (en) * | 2003-10-08 | 2006-11-22 | 新日本制铁株式会社 | Weld structure having excellent brittle crack propagation resistance and method of welding the weld structure |
| CN101108441A (en) * | 2007-08-30 | 2008-01-23 | 沈阳飞机工业（集团）有限公司 | Penetrating welding technique |
| CN101474727A (en) * | 2009-01-16 | 2009-07-08 | 北京工业大学 | Laser-arc hybrid welding method of light sheet T type joint |
| CN101676060A (en) * | 2008-09-19 | 2010-03-24 | 湖北中航精机科技股份有限公司 | Method for welding plate material of seat of vehicle by laser |
| CN102672360A (en) * | 2012-05-16 | 2012-09-19 | 上海人民电力设备股份有限公司 | Welding method for long weld joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5629895B2 (en) * | 2007-09-07 | 2014-11-26 | ジャパンマリンユナイテッド株式会社 | Welded structure |
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- 2012-11-13 CN CN201210453204.1A patent/CN102922137B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1867418A (en) * | 2003-10-08 | 2006-11-22 | 新日本制铁株式会社 | Weld structure having excellent brittle crack propagation resistance and method of welding the weld structure |
| CN101108441A (en) * | 2007-08-30 | 2008-01-23 | 沈阳飞机工业（集团）有限公司 | Penetrating welding technique |
| CN101676060A (en) * | 2008-09-19 | 2010-03-24 | 湖北中航精机科技股份有限公司 | Method for welding plate material of seat of vehicle by laser |
| CN101474727A (en) * | 2009-01-16 | 2009-07-08 | 北京工业大学 | Laser-arc hybrid welding method of light sheet T type joint |
| CN102672360A (en) * | 2012-05-16 | 2012-09-19 | 上海人民电力设备股份有限公司 | Welding method for long weld joint |
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| CN102922137A (en) | 2013-02-13 |
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