Sheet Metal Processing process: 1. Blanking 2. Bending 3. Drawing 4. Welding 5. Plastic spraying 6. Inspection 7. Storage. Definition: It refers to the technology of processing plates of uniform thickness, which does not need to be formed by molds, and the production speed is slow, including blanking, bending, stretching, welding, spraying, assembly, etc., mainly shearing, punching, folding, welding, bonding, etc. step. 1. Blanking: mainly punching and laser cutting. The number of punching refers to the processing of CNC punching machine, and the thickness of the plate is ≤3mm for cold-rolled sheet and hot-rolled sheet, ≤4mm for aluminum sheet, and ≤2mm for stainless steel. There are minimum size requirements for punching, which is related to the shape of the hole, the properties and thickness of the material. Laser cutting is a laser flying cutting process. The thickness of the plate is ≤20mm for cold-rolled and hot-rolled plates, and ≤10mm for stainless steel. The advantage is that the thickness of the processing plate is large, the cutting speed of the workpiece shape is fast, and the processing is flexible; 2. Bending: The bending part has a minimum bending radius. When the material is bent, the outer layer is stretched and the inner layer is compressed in the rounded area. When the thickness of the material is constant, the smaller the inner bending radius, the more serious the tension and compression of the material; when the tensile force of the outer layer exceeds the limit of the material, fracture and breakage will occur. 3. Stretching: The radius of the fillet between the bottom of the drawing piece and the straight wall should be greater than the thickness of the plate. The thickness of the material after stretching will change to a certain extent. The center of the bottom generally maintains the original thickness, and the material at the bottom fillet becomes thinner. , the material at the top near the flange becomes thicker, and the material at the rounded corners of the rectangular stretcher becomes thicker. 4. Welding: mainly arc welding and gas welding. ①Arc welding has the advantages of flexibility, maneuverability, wide applicability, and all-position welding; the equipment used is simple, durable, and low maintenance costs. However, the labor intensity is high and the quality is not stable enough, depending on the level of the operator. It is suitable for welding carbon steel, low alloy steel and non-ferrous alloys such as copper and aluminum over 3mm. ②The flame temperature and properties of gas welding can be adjusted. Compared with arc welding, the heat source is wider than the heat affected zone, the heat is not as concentrated as the arc, and the productivity is low. Alloy, cemented carbide, etc. 5. Plastic spraying: The surface of the hardware is automatically sprayed with oil and powder through the oven and other machines to make the product look beautiful and meet the needs of packaging and shipping. 6. Inspection: The production process of the product is controlled in real time by the quality inspection department to reduce production loss and defective rate and ensure production quality. 7. Warehousing: The products that have gone through the above processes have reached the requirements for warehousing and ready to be shipped, and can be packaged and warehousing. The above is about sheet metal processing. There are many other interesting stories and developments in our company, as well as sales of Product Development, Mold Maker, Rapid Prototype, Plastic Mould, 3D Print and Plastic Injection Molding. You can click and have a look. , you can consult us if you are interested.
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