本文介绍了一种由作者研制的手弧焊模拟训练装置，目的在于给手弧焊学习者提供辅助练习。

This paper introduces a manual welding simulant trainer which is developed by the writer in order to provide learners of manual welding an auxiliary training.

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根据对比铝热焊与手弧焊修复工艺，阐明了用铝热焊修复钢锭模是一种高效、节能、焊接质量好的新方法。

By comparison with manual arc welding, it is found that the thermit welding is a efficiency, energy saving and high quality process for repair welding of steel ingot die.

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本文详细地分析了ZX5-400型可控硅手弧焊电源动特性的几个特点。

Several aspects of the dynamic characteristics of ZX5-400 silicon controlled are welding power supply are analyzed in detail in this paper.

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