welding fume

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。

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.

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。

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%。

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

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.