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镀锌方矩管如何加工电镀

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【 发布于:2018-01-12 16:50:38 】


济南镀锌管加工业内人士表示,镀锌方矩管由于具有优良的耐蚀性、深加工成型性、涂漆性和焊接性,以及良好的表面质量和综合力学性能而被广泛用于建筑钢结构,汽车制造,机械制造,桥梁构造,集装箱龙骨,船舶制造等领域。

Industry insiders said Ji'nan galvanized pipe, galvanized square pipe with excellent corrosion resistance, deep processing molding, painting and welding, and good surface quality and mechanical properties and is widely used in building steel structure, automobile manufacturing, machinery manufacturing, bridge structure, container keel, shipbuilding and other fields.

镀锌方矩管加工电镀工艺主要有预处理、电镀及镀后处理等过程,镀层的质量取决于材料的电镀过程,而电镀过程又受很多因素的影响,归纳六大因素如下:

The plating process of galvanized square pipe is mainly pretreated, electroplated and post treated. The quality of the coating depends on the plating process of the material, and the electroplating process is affected by many factors. The six factors are summarized as follows:

济南镀锌管

1、锌含量:锌块的锌纯度越高,其光亮范围越窄,汽车板就更易获得较厚的镀层,镀层中铁含量也会较低;当锌块的纯度太低时,其光亮范围会较宽,要达到规定的锌层厚度就需要更长的时间,这就会导致镀锌层中铁含量较高。

1, the zinc content of zinc in zinc block: the higher the purity, the brightness range is narrow, the car plate is easier to get thicker coating, the iron content of the coating will be low; when the purity of zinc block is too low, the light range is wide, the thickness of zinc layer provisions to achieve longer in time, this will lead to a high iron content in zinc coating.

2、氢氧化钠:氢氧化钠对反应具有双重影响,当其含量太高时,高温操作过程中易出现烧焦现象;而其含量过低时,溶液分散能力较差,这样会降低锌层的质量。

2, sodium hydroxide: sodium hydroxide has double effects on the reaction. When the content is too high, the phenomenon of Scorch is likely to occur during high temperature operation. When the content is too low, the dispersing ability of the solution is poor, which will reduce the quality of the zinc coating.

3、铁含量:济南镀锌管称当铁含量太高时,镀层中的铁会相应较多,会导致产品钝化膜光亮度不足;而铁含量太低则会导致镀锌层中铁含量较低,降低汽车板的耐蚀性,且会导致汽车板表面偏橄榄色。

3, Ji'nan: galvanized iron content that when iron content is too high, in the coating of iron will lead to more appropriate, product passivation brightness is insufficient; and the iron content is too low will lead to low iron content in zinc coating, corrosion resistance of automobile plate, and will cause the car plate surface is olive.

4、光亮剂:浓度太高会增强镀层的脆性,而太低会造成低电流区的镀层较为稀疏,出现钝化不均现象。

4, brightener: too high concentration will enhance the brittleness of the coating, and too low will cause the low current zone is thinning, the phenomenon of inhomogeneous passivation.

5、温度:电镀过程中温度太高会导致溶液分散能力下降,镀层中铁含量升高,钝化不均匀;而反应温度过低时,高电流密度区会容易烧焦,镀层脆性较大且沉积速度较慢。

5, temperature: too high temperature in the electroplating process will lead to the decrease of the dispersing ability of the solution, the increase of the iron content in the coating and the inhomogeneity of passivation. When the reaction temperature is too low, the high current density area will easily scorch, the coating is brittle and the deposition speed is slow.

6、阴极移动速度:电镀过程中必须保证阴极处于移动状态,如果移动速度太快,电镀过程中高电流密度区镀层会较粗糙;而移动速度太慢又可能产生气流,造成了材料镀层的不均。

6, cathode movement speed: during the electroplating process, the cathode must be kept in the mobile state. If the moving speed is too fast, the coating in the high current density area will be coarser during the plating process, and the moving speed is too slow, which may cause air flow, resulting in the uneven coating.

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