Pretreatment Process Flow of Cookware Coating Line

The pretreatment process flow of cookware coating line is one of the key steps to ensure the quality of the final product. This process mainly includes pretreatment, sandblasting, dust removal and preheating, aiming to remove grease, dust and dirt on the surface of the workpiece, providing a good foundation for the subsequent coating process. The following is a detailed analysis of the pretreatment process flow of cookware spray coating line.

Ⅰ. Pretreatment Process

The pretreatment process is the first step of the coating production line. Its main purpose is to remove grease, dust and moisture on the surface of the workpiece, and provide a clean and dry surface for subsequent processes. The pretreatment process usually includes the following steps:

1. Loading: Place the cookware workpiece to be processed on the production line and prepare for subsequent processing.

2. Hot water washing: Use hot water to wash the workpiece to remove grease and dirt on the surface.

3. Pre-degreasing and main degreasing: Through the action of chemical agents, further remove grease and impurities on the surface of the workpiece.

4. Water washing: Use clean water to wash the workpiece multiple times to ensure the cleanliness of the surface.

5. Blowing and drying: Use compressed air to blow off the water droplets on the surface of the workpiece, and use the drying equipment to dry the workpiece to a moisture-free state.

6. Cooling and hanging: Cool the dried workpiece to a suitable temperature and hang it on the hanger of the next process.

Ⅱ. Sandblasting Process

Sandblasting process is an important part of the pretreatment process. Its main purpose is to increase the roughness of the workpiece surface and increase the adhesion between the coating and the workpiece. The sandblasting process usually includes the following steps:

1. Loading: Place the pre-treated workpiece on the sandblasting machine.

2. Sandblasting: Use a sandblasting machine to sandblast the surface of the workpiece to remove the oxide layer and dirt on the surface and increase the roughness of the surface. (Chuangzhi Coating Patented Product, Automatic Sandblasting Machine without Fixtures)

3. Water washing and sand removal: Use clean water to clean the workpiece after sandblasting to remove sand and impurities on the surface.

4. Drying: Dry the cleaned workpiece to a moisture-free state to prepare for the subsequent coating process.

Ⅲ. Dust Rremoval and Preheating Process

The dust removal and preheating process is the last pretreatment process before painting. Its main purpose is to remove fine particles and dust on the surface of the workpiece and increase the temperature of the workpiece to provide suitable conditions for the subsequent painting process. The dust removal and preheating process usually includes the following steps:

1. Automatic dust removal: Use dust removal equipment to remove dust from the workpiece to remove fine particles and dust on the surface. Dust removal equipment usually adopts dry or wet dust removal methods, which are selected according to the specific conditions of the workpiece.

2. Preheating: Preheat the workpiece through the preheating equipment to increase the temperature of the workpiece to a suitable painting temperature range. Preheating can improve the adhesion and curing effect of the coating, and also help reduce defects in the painting process.

Ⅳ. Summary

The pretreatment process flow of the cookware liquid coating line includes pretreatment, sandblasting, dust removal and preheating. These links are interrelated and interdependent, and together constitute an efficient and stable production system for the coating production line. Through strict pretreatment process, it can ensure that the cleanliness, roughness and temperature of the surface of the cookware workpiece meet the requirements of the coating process, providing a good foundation for the subsequent coating process. At the same time, the pretreatment process can also improve the adhesion and curing effect of the coating, thereby improving the quality and performance of the final product.

In the actual production process of the cookware coating line, the pretreatment process should be flexibly adjusted and optimized according to the specific conditions of the workpiece and the requirements of the coating process. Through continuous practice and innovation, the production efficiency and product quality of the cookware painting line can be further improved to meet market demand and consumer expectations.