Views: 0 Author: Site Editor Publish Time: 2019-08-23 Origin: Site
Sheet metal fabrication parts is a comprehensive cold working process for sheet metal, including shearing, blanking, bending, welding, riveting, mold forming and surface treatment. The metal sheet is usually below 6 mm. A significant feature of sheet metal fabrication parts is the uniform thickness of the same part. Next, we will introduce the processing methods and processing flow of it.
Sheet metal fabrication parts methods
Sheet metal fabrication parts process
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Non-mold processing: The process of sheet metal processing by means of digital punching, laser cutting, shearing machine, bending machine, riveting machine, etc., generally used for sample production or small batch production, and the cost is high. The processing cycle is short and the reaction is rapid.
Mold processing: processing of sheet metal by a fixed mold, generally has a blanking die, a forming die, and is mainly used for mass production, and the cost is low. The cost of the previous mold is high and the quality of the parts is guaranteed. The previous processing cycle is long and the mold cost is high.
Cutting - stretching - other processing - welding - surface treatment
The processing methods of sheet metal mainly include digital punching, laser cutting, shearing machine, die cutting, etc. CNC is the commonly used method. Laser cutting is mostly used in the proofing stage (can also process stainless steel sheet metal parts), and the processing cost is high. It is mostly used for large-scale processing.
The stretching of sheet metal is mainly done by numerical control or general punching, and various stretching punches or dies are required.
The shape of the tensile member should be as simple and symmetrical as possible, and stretched as much as possible.
Parts that need to be stretched multiple times should allow traces of the surface that may occur during the stretching process.
The tensile side wall should be allowed to have a certain inclination under the premise of ensuring the assembly requirements.
3. Other processing
Reinforcing ribs - ribbing on slab metal parts helps to increase structural rigidity.
Blinds - Blinds are commonly used for ventilation and heat dissipation on various enclosures or enclosures.
Hole Flanging (Stretching Hole) - Used to machine threads or increase the rigidity of the holes.
In the design of sheet metal welded structure, “symmetric arrangement of welds and welds should be carried out, and avoiding intersection, gathering, and overlapping, secondary welds and joints can be interrupted, and the main welds and joints should be connected.”
Soldering is commonly used in sheet metal welding, such as arc welding and electric resistance welding.
Arc welding: There must be enough welding space between the sheet metal, the welding gap should be at most 0.5~0.8mm, and the weld should be even and even.
Resistance welding: The welding surface is required to be flat, without wrinkles, rebound and the like.
The connection methods of sheet metal processing mainly include rivet riveting, welding, hole staking, and TOX riveting.
5. Surface treatment
The treatment of the surface of the sheet metal can provide protection against corrosion and decoration. The common surface treatments of sheet metal are: powder coating, electrogalvanizing, hot dip galvanizing, surface oxidation, surface drawing, silk screen printing, and the like. Before the surface treatment of the sheet metal, the oil, rust, welding slag, etc. on the surface of the sheet metal should be removed.
The processing technology of sheet metal processing is believed to be known to everyone. If you feel that you don't know enough, you can contact us at any time. We will have someone to answer your doubts. If you are interested in machined parts, please come and learn about our company's products.