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热镀锌槽钢的表面粗糙影响因素

作者:http://wolfandpack.com 时间:2020/10/31 11:34:34 0次浏览

信息摘要:表面粗糙的热镀锌层一般比光洁的热镀锌层更厚,因此抗腐蚀的使用寿命很有可能更长,仅仅外型不佳罢…

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  导致热镀锌槽钢热镀锌层表面粗糙缺点的关键缘故以下:

  一、镀前处理方式中造成“过酸洗钝化”,对热镀锌槽钢热镀锌层表面粗糙的影响。

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  二、锌液溫度过高或浸锌時间太长,对热镀锌槽钢热镀锌层表面粗糙的影响。

  锌液溫度过高、浸锌時间太长时,或因为热镀锌槽钢成份及圣德林效用的影响,使Zn-Fe铝合金相形成过多或不匀称,也会导致表面粗糙。热镀锌层越厚表层越非常容易看起来不光滑。

  热浸镀锌热镀锌槽钢从锌液中取下后制冷迟缓,或不锈钢板材横截面太厚,或热浸镀锌后热镀锌槽钢不用防护马上叠起来等缘故,也会出現表面粗糙状况。

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