免费咨询热线
182-0333-2444 188-0318-0271Common defects of punching net
In addition to the defects of the original plate, any improper operation of the process will cause quality problems. Common surface defects are
Punching mesh spot: color spot, dark spot and other defects on the surface of the coating. It is caused by poor deposition of metal ions, adhesion of foreign matters or unclean passivation solution after passivation
Positive and negative surface of punching net: the defect of uneven brightness or color on the surface of coating, which shows certain regularity in similar products in most cases
Local non plating of punching net: there are defects on the surface of the plating layer with different areas and shapes, such as missing plating, exposed iron spots or spots (except for process regulations)
Punching mesh peeling: the cracking or non cracking defect of coating and punching mesh plate. It is usually caused by poor treatment before plating
Punching mesh pitting: refers to the irregular concave holes on the surface of the coating, which are characterized by different shapes, sizes and depths. Pockmarks are usually caused by substrate defects or foreign body adhesion during electroplating
Punching net burr: a foreign body protruding and pricking on the surface of the plating layer, which is usually characterized by the upward plating or high current density area. The thickness of zinc layer depends on the control of current density and strip speed, that is, increasing the current density and reducing the strip speed can increase the zinc layer thickness. However, there is a certain limit. When the strip speed is very low and the current density is high, the coating surface will become rough, which will affect the coating quality
Pinhole of punching net: the pinhole on the surface of plating layer is similar to that of the needle tip. Although its density and distribution are not the same, they are generally similar in size and shape when observed under a magnifying glass. Pinholes are usually defects caused by hydrogen bubble adsorption during electroplating. In the electroplating reaction, a large number of bubbles will be produced. If these bubbles are not removed in time, they will stay between the strip surface and the anode. The anode and the surface of the strip are covered by the gas layer, which will affect the electrical conductivity, resulting in the local plating on the surface of the strip steel
The above are common defects of punched mesh, also known as round hole mesh. These problems are caused by improper operation and process flow problems. A person who wholeheartedly makes metal mesh will avoid the above situation. Please believe the reputation of Hebei Xiaodi wire mesh products Co., Ltd., and your satisfaction is our goal. Hope to get in touch with you and cooperate!
以上都是冲孔网又称圆孔网的常见缺陷出现这些情况都是由操作不当和工艺生产流程问题,一个全心全意做金属网的人士会避免出现以上情况请相信河北逍迪丝网制品有限公司的信誉,你的满意就是我们努力的目标。希望能和你取得联系和合作!
Copyright © 2002-2020 河北逍迪丝网制品有限公司 版权所有 冀ICP备17023073号 XML地图