When welding with tungsten arc welding equipment, the following steps should be followed.① Turn on the main power source, cooling water source and gas source, and check if they are in normal condition.② Switch the switch in the welding power source to the "on" position and the welding changeover swi

Due to the increasingly prominent pressures such as environmental protection, energy conservation and emission reduction, carbon peaking, and carbon neutrality, lightweight will be an inevitable trend in automobile manufacturing. The concept of lightweight originated in motorsports, its advantage is