Causes of pinholes in workpieces after coating by coating machine and how to eliminate them?
We learned that Spray coating machine Pinholes in the paint film of the workpiece after coating are a headache for customers. Small pinholes greatly reduce the coating effect and affect the beauty of the workpiece.
So what is the reason for the pinhole in the coating workpiece with the coating machine? How should we put an end to this phenomenon?
reason:
1. The viscosity of the coating is too high, the mixing time is too long, and the air cannot be released into the coating.
2. There is oil stain and water on the surface of the coated workpiece.
3. The spraying air pressure is large, the diameter is small, and the spraying distance is too far.
4. The coating is too thick and the solvent volatilization is difficult. 5. The construction site has high temperature and high temperature.
resolvent:
1. The Spray coating machine paint viscosity shall be properly prepared and placed for a period of time before use.
2. The work surface shall be cleaned before construction.
3. Adjust the air pressure, generally 0.6MPa, and master the spraying distance.
4. The primary coating shall not be too thick, no more than 30 mm μ m。
5. Add moisture-proof agent properly and dry water slowly.
It can be seen that the coating defects are not only caused by single reasons such as coatings and workpieces, but often small problems will affect the emergence of larger problems.
Therefore, before using the drenching machine, it is better to conduct a detailed inspection on the coating and workpiece, and operate in strict accordance with the drenching process.
Foshan Shuofeng Intelligent Equipment Co., Ltd. is a specialized coating equipment manufacturer integrating R & D, manufacturing, sales and service. More than 20 years of manufacturing experience in UV coating industry, mainly engaged in: automation equipment, UV roller coating machine, membrane press, soil patching machine, coating machine, flat pasting machine, UV curing machine, coating equipment, coating production line, automatic feeding machine, etc.
The company introduces Italian coating technology, kneading and mature process, and develops coating production equipment with strong adaptability and strong applicability. The company's equipment is applied to the surface coating of panel furniture, calcium silicate board, glass magnesium board, flat door, cabinet, solid wood composite floor, bamboo and wood curtain and other flat parts, and provides scientific, rigorous and Applicable production process and equipment configuration to achieve high-quality coating effect for each customer.
The company has a loyal, stable and technologically mature development, manufacturing and after-sales team, specializing in automatic paint coating equipment. For a long time, adhering to the purpose of "focusing on quality and intimate service", the company has strictly grasped all details of the equipment and continuously innovated and improved the equipment. Over the years, the company's integrity, strength and product quality have been recognized by most customers. In the future, we will, as always, sincerely cooperate with our customers to create the future together. We wish our customers to visit, guide and negotiate business.
