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Sheet Metal Fabrication

Sheet Metal Fabrication involves cutting, punching, bending, stamping, stretching and welding the metal sheets into intended structures and shapes. The metal sheet thickness ranges from as thin as 0.2 mm to as thick as 10 mm or more. Sheet metal parts are widely used in applications where strength, durability, resistance to corrosion are indispensable, such as in the construction of buildings, vehicles, sports, electricity,defence, aerospace, machinery, etc.
Designing sheet metal parts should well consider the factors of material options and thickness, bending radius, location of the bends and holes, manufacturing tolerance, assembly, and surface finishing. Bending is the primary step for sheet metal fabrication, the bending features should be followed to have the part bent at tight tolerance, good performance and appearance. Our bending tolerance is usually ± 0.1 mm as well as the laser cutting.



Sheet Metal Process:

•Laser Processing
It has a large laser cutting machine, it can be cut by laser cutting  such as carbon steel, stainless steel, etc material. After the workpiece is processed, the section is neat, smooth and beautiful, and the size is accurate. It has advantages for the workpiece with arc. CNC stamping can not replace the processing method.

•Stamping
With imported turret CNC punching machine, CNC punching is mainly for the thickness of product processing materials, generally suitable for materials below 2.5mm. Sheet metal processing workpieces have more holes or need to open special molds to process the workpiece. CNC punching has a certain cost advantage.
•Bending
After the workpiece is cut, if most of them need to be bent and formed, the CNC bending machine not only has a fast speed, but also the workpiece is processed more accurately.
•Welding Molding
The workpiece needs to be assembled and formed after cutting the material, and the assembly method is various. Some are directly formed by non-welding processes such as screws and riveting. Generally, the mechanical casing is made of welding, and the company adopts argon arc welding, bump welding, carbon dioxide welding, etc., we will polished them after welding, so that the workpiece is relatively firm and beautiful.



•Electrostatic powder spray:
Electrostatic powder spraying is mainly for carbon steel workpieces. In the process, oil removal and derusting, surface cleaning, phosphating, electrostatic powder spraying and high temperature baking are generally carried out. After processing, the surface of the workpiece is beautiful, it will not rust within a few years, and the cost is low.

Liquid paint: This process differs from electrostatic powder spray. It is mainly used for large workpieces. It is convenient and low-cost to use liquid paint when it cannot be handled. The liquid paint is divided into two steps, and the primer is applied to the paint after the workpiece is processed.

Advantages of Sheet Metal

Sheet metal has the characteristics of light weight, high strength, electrical conductivity (can be used for electromagnetic shielding), low cost, large-scale mass production performance, etc. It has been widely used in the fields of electronics, electricity,automotive industry, medical equipment and so on. For example, in computer cases, capacitor casing,sheet metal is an essential part.




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E-mail: joan@aosprototypes.com 
Add: No.410,DongHuan Road, Xinqiao Street,Bao’an District,Shenzhen,China 518125
 E-mail: aos@aosprototypes.com
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