How to spray molding process of punching network

- Dec 04, 2018-

Compared with other surface treatment methods, spray molding is undoubtedly the most effective way to deal with the anti-corrosion problem of punched net surface. However, some manufacturers have often reflected in the recent process that they have encountered many problems during the process of spraying. The sprayed plastic product did not meet the standard and was returned without any reason. The emergence of this situation has even affected the production enthusiasm of the manufacturers, and is ready to abandon the production of spray-punched mesh products. In view of the frequent occurrence of this situation, the author's suggestion is to adjust the steps in the spray process and make reasonable arrangements. In the spray process, if necessary, start with the selection of spray materials. Here are all the suggestions I gave:


1. Work before spraying:

Before the punching net is processed, first of all, we have to ensure that the surface of the product is clean, such as: paint used for rust removal, rust on the surface, dust on the cover, etc. These substances can be used for punching nets. The spray process has a certain impact, so manufacturers should pay special attention to this.


2. spray powder quality:

In addition, the quality of the sprayed powder is also a special point of attention. It should be noted that during the process of spraying, the quality of the spray is closely related to the material selection. Therefore, if you want to spray it well, Plastic anti-corrosion treatment, we need better quality spray plastic materials. If the cheaper image is used, and the sprayed powder with lower price and lower quality is applied, the appearance of the processed product will be very poor. Similarly, in the long-term application process, surface cracking will occur.


3. electrostatic voltage:

In the process of plasticizing the punched mesh products, the voltage also needs our precise control, otherwise it will greatly affect the quality of the spray. In general, people often use voltage values ranging from 50 kV to 60 kV. When the amount of powder is large, the voltage value of 60 kW to 80 kW is used, but the frequency should not be too large. Otherwise, It is extremely easy to cause security risks. In the usual spray process, the voltage value of about 30 kV to 50 kV is the most ideal and most suitable voltage value.

 

4. spraying distance:

This is determined by the distance between the meshes. In general, in the field of punching mesh products, the spray spacing ranges from 100 mm to 300 mm, which is the most ideal for punching mesh products. The spray spacing value.


5. the amount of powder spray:

To mention this problem, we must first look at the basic conditions of the sprayed product itself, such as: hole shape, aperture, groove and so on. These parts can influence the quality of the punching net spray, so it is a point that producers should pay special attention to. In addition, I would like to warn everyone that if the punching net products of the box structure are sprayed, we must pay attention to the proper application of the spray powder. Otherwise, it will easily lead to the accumulation of spray powder in the interior. Guarantee the hygiene standards and quality of products.


6. Spraying at the corners:

When the surface of the punching net is sprayed, we try to spray the corners first. After the corners are processed, we will process the other parts. The angle and voltage standard of the spray tool can also be adjusted if necessary.


When the above points are achieved, the problem is basically solved. Naturally, the sprayed punching net produced can reach the standard, and the customer's return will not occur again. In fact, these problems are not difficult to solve. The solution is not only based on simple construction steps, but also on the determination and dedication of the manufacturers. It is necessary to know the business, and the pay and return are directly proportional.