How to improve the defects of stainless steel thermos painting process?

Hello everyone, "Dong Dong Talk Cup" is here. In the previous article, the editor explained the difference between painting and powder spraying on the surface of a thermos cup. http://www.zhanyict.com/en/ProductsDetail-VB-10441.htmlToday, the editor will share with you how to improve the process defects after painting the surface of a thermos cup.

Thermos cups currently sold on the market are basically made of metal, and there are also a few ceramic thermos cups, but the heat preservation effect is much worse than that of metal. Metal thermos cups are mainly made of stainless steel and titanium. http://www.zhanyict.com/en/ProductsDetail-VB-10441.htmlThe use of titanium has also begun to be sought after by the market in the past two years. Today, the editor mainly talks about how to improve the process defects of stainless steel surface after spraying paint.

Stainless steel is widely used in the cup and pot industry due to its excellent corrosion resistance and aesthetics. http://www.zhanyict.com/en/ProductsDetail-VB-10441.htmlHowever, when stainless steel is sprayed with paint, the paint surface is often scratched and peeled off, which greatly affects its aesthetics and durability. In order to solve this problem, paint manufacturers, spray coating factories and cup and pot factories are actively looking for ways to improve it.

The surface treatment of stainless steel before painting is a key step in determining the quality of the paint layer. Ensuring that the stainless steel surface is clean, oil-free and dust-free is a basic requirement. In addition, proper surface grinding or sandblasting can increase the surface roughness, provide more attachment points, and help the paint layer and stainless steel to better combine. http://www.zhanyict.com/en/ProductsDetail-VB-10441.htmlSome manufacturers currently have misunderstandings in this regard, believing that the smoother the stainless steel surface is polished, the better the effect of painting will be, and the smoother the surface, the worse the adhesion of the paint.

The choice of primer is crucial to improving the overall adhesion of the paint layer. Primers designed specifically for stainless steel should be selected. Such primers can form a stronger base layer and increase the adhesion between the top paint and stainless steel. http://www.zhanyict.com/en/ProductsDetail-VB-10441.htmlPrimers containing epoxy resin are recommended because they have excellent mechanical properties and adhesion. However, it must be said that most factories usually use direct spraying of top paint in order to pursue profits and reduce costs.

The temperature and humidity of the environment during the painting process also affect the quality of the paint layer. Painting in an environment that is too humid or too cold will cause the paint layer to cure poorly, thus affecting the adhesion and durability of the paint layer. http://www.zhanyict.com/en/ProductsDetail-VB-10441.htmlOnly by ensuring that the working environment meets the standards can products with satisfactory performance be produced.

The quality of painting techniques is directly related to the uniformity and smoothness of the paint surface. Using a high-quality spray gun and maintaining a certain spray distance and angle can greatly reduce the occurrence of sags and unevenness in the paint surface. http://www.zhanyict.com/en/ProductsDetail-VB-10441.htmlIn addition, the proper flash-off time between layers during the spraying process is also crucial. Ensuring that each layer of paint has enough time to dry can improve the integrity of the paint layer.

Choosing a high-quality topcoat not only provides a more durable protective layer, but also increases the paint's ability to resist scratches. http://www.zhanyict.com/en/ProductsDetail-VB-10441.htmlIt is recommended to use paints with high wear resistance, such as polyurethane or fluorocarbon paint, which can form a high-hardness protective layer after curing, effectively reducing scratches and peeling of the paint.

The above viewpoints are summarized by the editor from real cases with engineers, paint factory technicians and spray technicians. http://www.zhanyict.com/en/ProductsDetail-VB-10441.htmlThere is one thing that the editor must say. If you want the effect of spraying paint to reach or approach the firmness effect after powder spraying, the final cost will be close to or exceed the cost of powder spraying.