There are many methods for processing on the surface of stainless steel, which can be roughly divided into two types. One is to process the stainless steel to make it have a surface gloss, and the artistic processing of using gloss contrast to form patterns; the other is to give color to the composition of the patterns Art processing. Among them, the typical examples of the screen printing method are etching processing and color spraying processing.
The etching processing method is to screen-print the acid-resistant protective film on the surface of stainless steel with color, and then etch it with ferrous chloride solution to form an artistic pattern. The color spray method is to spray color particles after screen printing to form a pear-like surface and form an artistic pattern.
In recent years, in order to adapt to the diversification of stainless steel applications and increasingly high artistic requirements, the "color art" processing method with colors has been developed and has become the mainstream in this field. The method of imparting color to stainless steel includes a method of screen printing color ink followed by firing and a chemical coloring method.
The process of chemical coloring art processing method for stainless steel products is: stainless steel products â†’ silk screen â†’ oxidation coloring â†’ alkali treatment â†’ finished products.
The process of etching art processing method of stainless steel products is: stainless steel products â†’ silk screen â†’ etching â†’ alkali treatment â†’ oxidation coloring â†’ finished products.
The technological process of the color painting art processing method of stainless steel products is: stainless steel products â†’ silk screen â†’ etching â†’ alkali treatment â†’ silk screen â†’ oxidation coloring â†’ alkali treatment â†’ finished product.
The chemical coloring method of stainless steel does not use pigments and dyes. Instead, the stainless steel is immersed in a heated concentrated chromium sulfate solution for chemical coloring, which is characterized by good food resistance. The ink used in this processing method must have a very strong acid resistance, and generally use a UV vulcanized ink with special properties that is compatible with the processing process.
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