Common processes in sheet metal processing

Sheet metal processing technology is a comprehensive cold processing technology of sheet metal processing. With the more and more extensive application of sheet metal parts, sheet metal processing technology has become a very important part in the process of product development. Designers need to master the process characteristics of sheet metal. On the one hand, we need to meet the requirements of product function and appearance, on the other hand, we need to simplify the model and simplify the production process, so as to achieve low production cost and high production efficiency.

The following mainly introduces the common processes in sheet metal processing.


Laser cutting machine or punch machine processes materials according to programming documents. Among them, laser cutting machine can meet the cutting of parts with various shapes, and punch has advantages in batch processing.


According to the size indicated in the bending icon, the workpiece is bent and formed by the bending machine. Bending die is divided into upper die and lower die. Different shapes require different molds. The accuracy of the bending dimension is determined by the quality of the die.


According to the bottom hole of the workpiece, the corresponding internal thread is processed on the workpiece. Tapping requires plate thickness, and it is easy to slip if it is too thin.

Press riveting

Fasteners such as riveting nuts, screws or nut posts shall be firmly crimped on the workpiece by punch or hydraulic press. The bottom hole is pre opened on the workpiece for press riveting, and the fastener is pressed on the workpiece during bending, which can reduce the welding workload and protect the appearance of special workpiece.

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Use the die to punch words, symbols or other shapes on the workpiece, mainly including the company name, company logo, company website and company contact number. Its advantage is that it can be permanently retained with the workpiece.

Punching net

Use the die on the ordinary punch or CNC punch to punch the grid hole from the workpiece. The mesh plate on the workpiece can play a beautiful decorative role and meet the heat dissipation function.


The rough edges on the workpiece surface can be removed by grinding machine, file and other tools to make the workpiece processing place smooth and flat and prevent cutting scratch.

Argon arc welding

The connection between workpiece and workpiece adopts argon arc welding machine to weld at the edge or joint of workpiece, which is divided into intermittent welding and full welding. It needs to be clearly marked on the drawing. Argon arc welding has the advantages of stable arc combustion, high production efficiency, small welding deformation and convenient operation and observation.

Planting welding

The planting welding screw is firmly welded on the workpiece with a planting welding gun. Planting welding is often used on the workpiece with small stress and requirements for the outer surface of the workpiece to ensure the beauty of the workpiece.

Welding and grinding

Use grinding machine, file and other tools to make the welding mark of the workpiece smooth and flat, which can obtain a better forming surface and increase the adhesion for subsequent plastic powder spraying.

wire drawing

It uses wire drawing machine and abrasive belt to texture the surface of the workpiece, so as to increase the aesthetics and market demand. Mainly stainless steel surface treatment.


Use polishing equipment to polish the workpiece surface to increase beauty and surface finish, mainly stainless steel surface treatment.

Fuel injection

Spray the paint evenly on the surface of the workpiece with a spray gun, which is convenient, fast and easy to use.

Plastic spraying

Spray the powder evenly on the surface of the workpiece with a spray gun and bake it in an oven. Plastic sprayed workpiece has better wear resistance and corrosion resistance.

screen printing

Special ink forms characters or patterns on the surface of the workpiece through a special grid. Screen printing has a wide range of applications, lasting colors and fast and convenient operation.

Laser marking

Surface treatment based on optical principle; The laser beam can engrave permanent marks on the surface of the workpiece in a variety of shapes.

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