Nanjing Qianjin Sheet Metal Co., Ltd

Qianjin sheet metal company was found in 1989 and we have 2 factories and more than 110 people in each factory over 20 years development.

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What Should Be Paid Attention To In Surface Treatment Of Sheet Metal Processing? - 1
- Jan 15, 2019 -

Sheet metal processing is to carry out processing technology, it not only includes the traditional cutting material, punching processing, bending molding and other methods and process parameters, but also includes a variety of cold stamping die structure and process parameters, a variety of equipment working principle and handling methods, also includes some new tamping technology and new technology. More and more sheet metal processing enterprises realize that the appropriate surface treatment can play a good role in decorative and protective effect on the surface of the product, improve the "color value" of the product, and thus improve the competitiveness of the market.


The most commonly used surface treatment methods in sheet metal processing are electroplating and spraying these two kinds. Electroplating is divided into galvanized, nickel plating, chrome plating, etc., the main purpose is to use the principle of electrolysis, in the sheet metal work piece surface to form a layer of metals or alloy protective layer, play a role in protection and decoration. Spraying is divided into painting and spraying powder, with spray gun gas to disperse the paint into a uniform and fine droplets, and sprayed on the surface of the sheet metal working surface, so that the coating on the surface to become coating, re-heating drying. Spraying can play a protective role on the surface treatment.


In addition to the above two methods, there are a number of other surface treatment methods, such as Anodic oxidation, chromate, drawing, sandblasting and oxidation, etc., here will not be a specific introduction.


Precautions for surface treatment of sheet metal work pieces 

First: To pay attention to the state of the work piece, all electrochemical treatment must be carried out in the bulk of the work piece body, the assembly can not be electrochemical treatment. Because during processing, the solution is trapped in a gap in the assembly and causes corrosion to the work piece.