镀锌层

Moreover, the pre-treatment and post-treatment processes for the steel sheet subject to continuous zinc plating were also discussed. Results showed that the alkaline zincate plating process had many advantages over conventional alkaline cyanide zinc plating process, including high current efficiency, good throwing power, and strung adhesion strength of the coating.

结果表明，该工艺电流效率高（锌离子含量16~24g/L时，电流效率可提高约20%，镀液均镀能力好（宽度为1m的镀锌薄板，中心点厚度与边缘厚度差不大于10%，镀层结合力优良（将试片180°任意弯曲，镀层无起皮、剥落现象；在烘箱中加热至180-200℃，保温60min，冷水中急剧冷却，镀层无突起、鼓泡、剥落现象），所镀得的镀锌薄钢板适合于钝化和彩涂等后处理。

Thus the alkaline zincate continuous zinc plating technology for steel sheet was investigated, with the emphasis being placed on the effects of the bath composition and process conditions on the current efficiency. The throwing power of the plating solution was tested using Hull's cell 8 points thickness method, and the adhesion strength of the coating was examined by heating and shock cooling test.

为此，研究了用于薄钢板连续电镀的锌酸盐镀锌工艺，重点研究了镀液成分及工艺条件对电流效率的影响，用Hull槽8点法测试了镀液的均镀能力；用加热骤冷法测试了镀层的结合力，并对薄钢板连续电镀锌的前后处理工艺作了探讨。

The pore distribution in the direction of coating thickness was self-existent and could not join to intercommunicating pore.The pore diameter was very tiny so that it could prevent hydrotropic solution entering into the pore.

机械镀锌的形层过程既没有热镀锌那样的高温冶金反应，也没有电镀锌那样的电沉积效应，镀层是常温常压下利用化学吸附沉积和机械碰撞使金属锌粉在工件表面镶嵌堆积而成[1]，所以人们认为机械镀锌镀层的致密性要低于电镀和热镀锌镀层，但机械镀锌镀层又表现出良好的耐腐蚀性能。

Particularly rust of all galvanised and stainless steel components must be removed.

特别是所有镀锌层和不锈钢部件上的铁锈应该清除。

On the condition of laser welding lap joint composed of dissimilar materials under the same parameters, the weld width was relatively narrow when the galvanized steel for boarding up.

在相同参数下焊接异种板材搭接接头，当具有镀锌层的钢板为上板时，焊缝熔宽较窄。

Sulphates, nitrates and phosphates are generally considered to be protective towards galvanizing.

硫酸盐、硝酸盐和磷酸盐一般被认为对镀锌层有保护作用。

Comparative tests of black color passivation of zinc coating based on reference formulas published in literature including copper salt method, silver salt method and method of mixture of copper salt and silver salt were conducted.

根据已发表的镀锌层黑色钝化的铜盐法、银盐法及铜银结合法等类型的黑色钝化的参考配方进行了对比试验，并就其中较为理想的钝化配方的成分含量及其作用、操作条件的影响做了细致的分析，并对钝化液配制时的注意事项予以说明。

The results show that the zinc coating is eroded mostly, and some red rust and black rust appear on the substrate in the environment of oxygen supplied intermittently.

结果表明：在间歇通O2的情况下，锌层大部分被腐蚀，而且在基体上有一些红锈和黑锈产生，镀锌板表面的腐蚀产物呈现着不均匀的针状物；而在间歇通N2时，镀锌板的锌层脱落面积较少，基体上没有产生红锈，腐蚀产物呈大块状；在间歇通O2和通N2的情况下，镀锌板的腐蚀速率先增后降，在200 h时，前者的腐蚀质量损失速率是后者的2倍左右；镀锌板附着库尔勒泥浆时的腐蚀过程受氧去极化过程控制。

Material: electrolytic zinc council CRS 0.048 thick asst.

材料：镀锌层表面为0.048厚的 CRS。

It's obviously that corrosion-resistance and brightness are much better than those of Zn plating.

实验结果表明，其耐蚀性和光亮度明显优于镀锌层。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐