冲孔网常见缺陷 

• 除原板缺陷外，任何一个工序操作不当，都会造成质量问题。一般的表面缺陷有

1. 冲孔网斑点：镀层表面的色斑、暗斑等缺陷。是由于电镀过程中镀层金属离子沉积不良、异物粘附或钝化处理后钝化液清洗不净造成
2. 冲孔网阴阳面：镀层表面局部亮度不一或色泽不均匀的缺陷，多数情况下在同类产品中表现出一定的规律性
3. 冲孔网局部无镀层：镀层表面的存在面积大小不一、形状不一的漏镀、露铁斑或点的缺陷(工艺规定除外)
4. 冲孔网脱皮:镀层与冲孔网板剥落的开裂状或非裂状缺陷。通常是由于镀前处理不良引起
5. 冲孔网麻点：指镀层表面不规则的凹穴孔，其特征是形状、大小、深浅不一。麻点一般是由于基板缺陷或电镀过程中异物粘附造成的缺
6. 冲孔网毛刺：镀层表面凸起而有刺手感觉的异物，通常其特点是在电镀向上面或高电流密度区较为显着。电镀锌的锌层厚度依靠控制电流密度和带钢速度来控制，即增加电流密度、降低带钢速度可以提高锌层厚度。但是这是有一定的限度的，当带钢速度很低，电流密度又高时，镀层表面会变得毛糙，反而影响镀层质量
7. 冲孔网针孔：镀层表面的与针尖凿过类似的细孔，其疏密及分布虽不相同，但在放大镜下观察时，一般其大小、形状相似。针孔通常是由电镀过程中氢气泡吸附而产生的缺陷。在电镀反应中，产生大量的气泡，这些气泡如不及时排除，就要滞留在带钢表面和阳极之间，阳极及带钢表面被气体层覆盖而影响导电，造成带钢表面局部镀不上

• 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!

Common 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!