MMAW：手动金属弧焊

手动金属弧焊（Manual Metal Arc Welding，常缩写为MMAW）是一种广泛应用于建筑、制造等综合领域的焊接技术。该缩写形式便于快速书写和使用，既提高了文档记录与专业交流的效率，也符合行业术语的标准化要求。这一工艺通过人工操作完成金属材料的电弧焊接，适用于多种施工场景。

The paper also describes the principle of welding material selection, recommends the welding process parameters of tungsten inert gas arc welding and manual metal arc welding, and points the special process measure and notable matters for welding.
阐述了焊接材料的选择原则，给出了钨极惰性气体保护焊和手工电弧焊的推荐焊接工艺参数。指出了该材料在焊接时采取的特殊工艺措施和注意事项。
The microstructure and mechanical properties of welding joints were studied by manual metal arc welding, carbon dioxide arc welding and plasma arc welding.
采用手工电弧焊、二氧化碳气体保护焊、等离子弧焊焊接400MPa级超级钢，并对焊接接头显微组织及力学性能作了分析研究。
It is found that the temperature distribution of weld pool and its adjacent area has a combined shape of cone and trumpet, which is different from the Gaussian distribution of TIG welding and manual metal arc welding.
发现在熔池及其邻近区域的温度场呈现锥形加喇叭形的分布特点，不同于以往TIG焊和手工焊条电弧焊的高斯分布。
In the manual metal arc welding, there exist on the droplets two kinds of fortes, i.e., the surface tension and the dynamic force of the gas formed in carbon oxidation.
手工电弧焊时，熔滴主要受两种力的作用，即表面张力和碳的氧化形成的气体动力。

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