According to the principle of thru the partition (TTP) welding test result and by analysis of processing conditions of TTP welding, the rules which should be followed in welding have been presented.
根据穿壁焊原理和试验，通过对穿壁焊工艺条件的分析，指出焊接所应遵循的规律。
2
Microstructure and mechanical properties changing rules of 2219 Al-alloy HAZ (heat-affected zone) with twin wire welding were studied using welding thermal simulation method.
采用焊接热模拟试验方法研究了2219铝合金双丝焊热影响区的微观结构和力学性能的变化规律。
3
Weldingwelding operation must hold professional certificates, and strictly abide by the rules.