The Research of De-Gassing with Silicon Powder Gapping for Remote Laser Welding of Zinc Coated Sheet Metal

2012 ◽  
Vol 548 ◽  
pp. 250-253
Author(s):  
Zhong Ning Zhang ◽  
Jian Tian
Keyword(s):  
Laser Welding ◽  
Weld Metal ◽  
Sheet Metal ◽  
Silicon Powder ◽  
Zinc Vapor ◽  
Root Cause ◽  
Remote Laser Welding ◽  
Coated Sheet

There are the four types of defects during remote laser welding of zinc coated sheet metal. The root cause of all these defects is the explosion or ejection of molten weld metal caused by the escape of trapped high pressurized zinc vapor. De-gassing gapping is a method used to solve the defects. We have researched the silicon powder de-gassing gapping method for remote laser welding with coupons of zinc coated sheet metal. The result shows that silicon powder de-gassing gapping method works well.

The De-Gassing Evaluation with Full Penetration for Remote Laser Welding of Zinc Coated Sheet Metal

2012 ◽  
Vol 496 ◽  
pp. 272-275
Author(s):  
Jian Tian ◽  
Zhong Ning Zhang
Keyword(s):  
Laser Welding ◽  
Sheet Metal ◽  
High Heat ◽  
Removal Method ◽  
Full Penetration ◽  
Zinc Removal ◽  
High Heat Input ◽  
Remote Laser Welding ◽  
The Cost ◽  
Coated Sheet

There are the four types of defects during remote laser welding of zinc coated sheet metal. The root cause of all these defects is the explosion or ejection of molten weld metal caused by the escape of trapped high pressurized zinc vapor. Zinc removal is one of the methods used to solve the defects. We have researched the full penetration zinc removal method for remote laser welding with coupons of zinc coated sheet metal. The result shows that the full penetration zinc removal method works at the cost of high heat input and low welding speed

scholarly journals Effect of Micro Solidification Crack on Mechanical Performance of Remote Laser Welded AA6063 Fillet Lap Joint in Automotive Battery Tray Construction

2021 ◽  
Vol 11 (10) ◽  
pp. 4522
Author(s):  
Tianzhu Sun ◽  
Pasquale Franciosa ◽  
Conghui Liu ◽  
Fabio Pierro ◽  
Darek Ceglarek
Keyword(s):  
Laser Welding ◽  
Fusion Zone ◽  
Aluminium Alloys ◽  
Mechanical Performance ◽  
Lap Joints ◽  
Fatigue Durability ◽  
Micro Cracks ◽  
Remote Laser Welding ◽  
Weld Fatigue ◽  
Weld Root

Remote laser welding (RLW) has shown a number of benefits of joining 6xxx aluminium alloys such as high processing speed and process flexibility. However, the crack susceptibility of 6xxx aluminium alloys during RLW process is still an open problem. This paper experimentally assesses the impact of transverse micro cracks on joint strength and fatigue durability in remote laser welding of AA6063-T6 fillet lap joints. Distribution and morphology of transverse micro cracks were acquired by scanning electron microscope (SEM) on cross-sections. Grain morphology in the weld zone was determined by electron backscatter diffraction (EBSD) while static tensile and dynamic fatigue tests were carried out to evaluate weld mechanical performance. Results revealed that increasing welding speed from 2 m/min to 6 m/min did not introduce additional transverse micro cracks. Additionally, welding at 2 m/min resulted in tensile strength improvement by 30% compared to 6 m/min due to the expansion of fusion zone, measured by the throat thickness, and refinement of columnar grains near fusion lines. Furthermore, the weld fatigue durability is significantly higher when fracture occurs in weld root instead of fusion zone. This can be achieved by increasing weld root angle with optimum weld fatigue durability at around 55°.

scholarly journals Remote Laser Welding of Steel and Aluminum Alloys

2017 ◽  
Vol 14 (1) ◽  
pp. 32-35 ◽  
Author(s):  
Florian Albert ◽  
Philip Marben ◽  
Tom Graham
Keyword(s):  
Aluminum Alloys ◽  
Laser Welding ◽  
Remote Laser Welding

scholarly journals Laser Welding of High-strength Aluminium Alloys for the Sheet Metal Forming Process

Procedia CIRP ◽  
2014 ◽  
Vol 18 ◽  
pp. 203-208 ◽  
Author(s):  
J. Enz ◽  
S. Riekehr ◽  
V. Ventzke ◽  
N. Sotirov ◽  
N. Kashaev
Keyword(s):  
Laser Welding ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Aluminium Alloys ◽  
High Strength ◽  
Forming Process ◽  
Metal Forming Process

Sheet Metal Fiber Laser Welding System and Welding Jig Design

Applied laser ◽  
2010 ◽  
Vol 30 (5) ◽  
pp. 395-398
Author(s):  
姜兆华 Jiang Zhaohua ◽  
潘涌 Pan Yong ◽  
王健超 Wang Jianchao ◽  
陈俊 Chen Jun ◽  
骆公序 Luo Gongxu ◽  
...  
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
Sheet Metal ◽  
Metal Fiber ◽  
Fiber Laser Welding ◽  
Welding System
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