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热镀锌和冷镀锌如何辨别区别和辨别?

来源:http://www.jnlhjscl.com/ 日期:2020-06-16 发布人:adminlehao

  热镀锌和冷镀锌如何辨别区别和辨别?

  How to distinguish hot galvanizing from cold galvanizing?
  首先工艺的区别是:
  The first difference between processes is:
  热镀锌是将工件除油、酸洗、浸药、烘干后浸入溶化的锌液里一定时间,提出来即可。
  Hot dip galvanizing is to remove oil, pickling, soaking, drying and then immerse the workpiece in the molten zinc solution for a certain period of time.
  冷镀锌也叫电镀锌,是利用电解设备将工件经过除油、酸洗后放入成分为锌盐的溶液中,并连接电解设备的负极;在工件的对面放置锌板连接在电解设备的正极 ,接通电源,利用电流从正极向负极的定向移动,就会在工件上沉积一层锌。
  Cold galvanizing, also known as electro galvanizing, is to use the electrolytic equipment to put the workpiece into the zinc salt solution after oil removal and acid pickling, and connect the negative pole of the electrolytic equipment; place the zinc plate on the opposite side of the workpiece to connect the positive pole of the electrolytic equipment, connect the power supply, and use the current to move from the positive pole to the negative pole in the direction, and a layer of zinc will be deposited on the workpiece.
  外观的区别:电镀锌外表比较光滑、明亮,采用彩色钝化工艺的电镀层也黄绿色为主色,呈七彩。采用白色钝化工艺的电镀层呈青白色或白色呈绿光,白色钝化工艺的镀层与阳光呈一定角度下略显七彩。在复杂工件的角棱部位容易产生“电烧”而成灰暗,该部位锌层较厚。在阴角部位易形成电流死角而产生欠电流灰暗区,该区域锌层较薄。工件整体无锌瘤、结块等现象。热镀锌外观较电镀锌稍微粗糙,呈银白色,外观容易产生工艺水纹和少许滴瘤,尤其是在工件的一端较为明显。但热镀锌的锌层比电镀锌厚几十倍,防腐蚀性能 是电镀锌的几十倍。
   济南镀锌管
  Appearance difference: the galvanized surface is relatively smooth and bright, and the plating layer with color passivation process is mainly yellow and green, showing seven colors. The plating layer with white passivation process is blue white or green, and the plating layer with white passivation process is slightly colorful with sunlight at a certain angle. It is easy to produce "electric burn" at the corner of the complex workpiece, which makes the zinc layer thick. It is easy to form a dead angle of current at the internal corner, which leads to the undercurrent gray area, where the zinc layer is thin. There is no zinc lump and caking on the whole workpiece. The appearance of hot-dip galvanizing is slightly rougher than that of electro galvanizing, which is silvery white. The appearance is easy to produce process water lines and a few droppings, especially at one end of the workpiece. However, the zinc layer of hot-dip galvanizing is dozens of times thicker than that of electro galvanizing, and its corrosion resistance is dozens of times that of electro galvanizing.
  镀锌成品的区别:
  Difference of galvanized products:
  1.热镀锌钢管内外壁均镀锌,而冷镀锌钢管则仅外壁镀锌;
  1. The inner and outer walls of hot-dip galvanized steel pipes are galvanized, while the outer walls of cold galvanized steel pipes are only galvanized;
  2.冷镀层均匀,厚度很薄;热镀层较厚,厚度不均匀。
  2. The cold coating is uniform and the thickness is very thin; the hot coating is thick and the thickness is uneven.
  3.冷镀外观光亮,热镀颜色较暗。
  3. The appearance of cold plating is bright, and the color of hot plating is dark.
  4.冷镀层因为较薄,耐蚀性较差;热镀层因为较厚是冷镀锌的几十倍,而且与基体金属形成渗入层,耐蚀性好。
  4. The corrosion resistance of cold coating is poor because it is thinner; the corrosion resistance of hot coating is good because it is dozens of times thicker than that of cold galvanizing, and it forms a penetrating layer with the base metal.
  5.冷镀锌钢管看上去表面亮一些,光滑平整;热镀锌外表没有冷镀锌细腻光亮,热镀锌钢管表面看上去好像有一些高低不平的凹凸,而且表面不发亮,不太反光。
  5. The surface of the cold galvanized steel pipe looks bright, smooth and flat; the surface of the hot galvanized steel pipe is not as smooth as that of the cold galvanized steel pipe, and the surface of the hot galvanized steel pipe seems to have some uneven bumps, and the surface is not bright, not too reflective.
  以上是关于热镀锌和冷镀锌如何辨别区别和辨别的相关介绍,由济南镀锌管整理提供,想要了解更多内容欢迎咨询http://www.jnlhjscl.com网站。
  The above is about how to distinguish between hot galvanizing and cold galvanizing. It is provided by Jinan Galvanized Pipe Co., Ltd. for more information, please consult http://www.jnlhjscl.com Website.



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