Sharing of welding methods for titanium and titanium alloy, aluminum and aluminum alloy
Release time:
2022-11-09
【Summary Description】 How to weld aluminum and aluminum alloy? Aluminum and aluminum alloys are particularly likely to produce an oxide film having a large specific gravity and a high melting point during welding. This oxide film can also absorb a large amount of water, so it is easy to produce defects such as slag inclusion, poor fusion and pores during welding. In addition, aluminum alloys are also prone to thermal cracking. Gas welding or manual arc welding can be used to weld aluminum and aluminum alloys. The heat of gas welding is not concentrated, and the heat transfer of aluminum is very fast, so the production efficiency is low and the workpiece deformation is large, so it is rarely used except for thin plates. At present, AC argon arc welding is widely used for welding aluminum and aluminum alloys. Its advantages are concentrated heat, beautiful welds, small deformation, and argon protection to prevent slag inclusion and pores. If manual arc welding is used to weld aluminum, it is suitable for thick plates above 4mm. The electrode brands used are aluminum 109, aluminum 209 and aluminum 309. They are all salt-based electrodes with poor arc stability and require a DC inverter power supply. How to weld titanium and titanium alloy? Titanium is a very active element. In the liquid state and the solid state above 600 ℃, it is easy to react with oxygen, nitrogen, hydrogen and other gases to generate harmful impurities, making titanium embrittlement. Therefore, except for oxygen-acetylene gas welding, manual arc welding or other gas shielded welding, titanium and titanium alloys can only be welded by argon arc welding, vacuum electron beam welding and contact welding. The thin plates below 3mm shall be welded by argon arc welding, the power supply shall be connected by DC positive pole, and the purity of argon shall not be less than 99.98. The nozzle is as close to the workpiece as possible, the welding current is small, and the welding speed is fast. Generally, low temperature annealing should be carried out after welding to improve the crystal structure and eliminate the welding stress.
How to weld aluminum and aluminum alloy?
Aluminum and aluminum alloys are particularly likely to produce an oxide film having a large specific gravity and a high melting point during welding. This oxide film can also absorb a large amount of water, so it is easy to produce defects such as slag inclusion, poor fusion and pores during welding. In addition, aluminum alloys are also prone to thermal cracking. Gas welding or manual arc welding can be used to weld aluminum and aluminum alloys. The heat of gas welding is not concentrated, and the heat transfer of aluminum is very fast, so the production efficiency is low and the workpiece deformation is large, so it is rarely used except for thin plates. At present, AC argon arc welding is widely used for welding aluminum and aluminum alloys. Its advantages are concentrated heat, beautiful welds, small deformation, and argon protection to prevent slag inclusion and pores. If manual arc welding is used to weld aluminum, it is suitable for thick plates above 4mm.
The electrode brands used are aluminum 109, aluminum 209 and aluminum 309. They are all salt-based electrodes with poor arc stability and require a DC inverter power supply.
How to weld titanium and titanium alloy?
Titanium is a very active element. In the liquid state and the solid state above 600 ℃, it is easy to react with oxygen, nitrogen, hydrogen and other gases to generate harmful impurities, making titanium embrittlement. Therefore, except for oxygen-acetylene gas welding, manual arc welding or other gas shielded welding, titanium and titanium alloys can only be welded by argon arc welding, vacuum electron beam welding and contact welding.
The thin plates below 3mm shall be welded by argon arc welding, the power supply shall be connected by DC positive pole, and the purity of argon shall not be less than 99.98. The nozzle is as close to the workpiece as possible, the welding current is small, and the welding speed is fast. Generally, low temperature annealing should be carried out after welding to improve the crystal structure and eliminate the welding stress.
Related News
Telephone:+86-18594983359
E-mail:Firmkim@cn-huaguang.com
Zip Code: 311112
Address: No. 82, Qihang Road, Renhe Street, Yuhang District, Hangzhou City, Zhejiang Province
Douyin QR code
We chat number
WeChat public account