welding fume

During this subject research the author mainly investigate and examine the self-shielded mechanism base on mix metal powder such as C-Mn-Si or C-Al-Si, which without fluoride and produce little slag and fume during welding.

笔者在本课题研究中着重论证并考察了C-Mn-Si与C-Al-Si等不含氟化物主要依靠合金元素实现的非造渣型自保护机制。

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Also, the characteristic, filtration and vent of welding fume is described.

并讲述了焊接烟尘的特点 、 过滤与排出.

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On Direct Method of Sample Preparation for Analyzing Welding Fume Using TEM

电镜分析焊接烟尘的直接采样法研究

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VH series ding smoke forare special for welding fume Produced by the welding site.

VH系列焊烟净化器,主要收集车间焊接现场所产生的有害致癌焊接烟尘.

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For this reason the author decide to put forward a metal cored self-shielded flux-cored wire, in this way the author expect to ameliorate the problem of welding fume and increase the welding efficiency.

为此笔者提出了金属粉芯自保护药芯焊丝构想，以此改善自保护药芯焊丝烟尘较大的问题和提高焊接效率。

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Results show that the collecting efficiency for the welding fume increases by 3% compared with ordinary fabric filtering, especially for those fine particles. The break through rate of 2 μ m particles decreases by 47%.

现场测试表明，该技术对焊接烟尘的滤除效率提高了3%，尤其对微细粉尘效果显著，2μm粉尘穿透率相对下降了47%。

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