GMAW与SMAW对焊接成形的比较

Comparison of GMAW and SMAW Butt Welding Methods

通过CO2气体保护焊（GMAW）与手工焊（SMAW）两种焊接方法对Q235B钢的焊接性能的对比得出两种焊接方法各自的特点。本文对两者焊后的焊缝形状、硬度和金相组织进行分析,以确定两种焊接方法的焊接性能。

The comparisons of welding performances of the two welding methods of GMAW and SMAW used on Q235B steel elicit the respective peculiarities of the two methods.This paper,in view of the above-mentioned reason,analyzes the weld shape,hardness and metallographic structures after welding by the two welding methods in order to confirm the welding performances of the two methods.