Matters needing attention in aluminum alloy stamping processing

Because the material of aluminum alloy stamping is softer than metal iron, it is expensive and easy to break. Some aluminum alloy products require subsequent processing, such as wire drawing, anodizing, etc., which are particularly prone to top scratches and scratches during stamping production. In terms of manufacturing, pay special attention to the following points: 　　 1. For punching holes that do not affect the number of projects, try to arrange the punching holes in the back of the project punching, and even for products with a large number of punching holes, consider doing one more project and also arranging the punching holes. Punch at the back. 　　 2. The aluminum material is soft and the mold is more likely to block the material, so when designing the mold gap, a gap of 10% of the thickness of the bilateral material should be placed. The straight depth of the knife edge is more suitable for 2MM, and the taper is 0.8-1°. .　　3. When bending and forming, because the aluminum material is prone to produce aluminum scraps during bending, the box-type substation will cause spot damage and indentation. The aluminum raw material needs to be pasted with PE film. In the case of rollers and electroplating, the forming block is Polishing hard chrome plating is better. 　　 4. For stamping parts that need to be processed after anodization, if there is a flattening and flattening process 180°, the product cannot be completely pressed. Complete pressing will cause acid spitting, so 0.2-0.3MM is required In order for the acid to flow out smoothly and in time, it is necessary to make a limit block and calibrate the mold higher than the mold in this process. 　　 5. Because the aluminum material is brittle and easy to crack, especially in the case of reverse folding, so Try not to make crimping lines, even if you do, make the crimping lines a little wider and lighter. 　　 6. All aluminum knife edges are required to be cut with a slow-moving wire to prevent burrs and irregular blanking. Aluminum parts are easy to cut. High temperature is generated, so the punch hardness is required to be above 60°, at least SKD11 material is used, and there must be no poor quality punches such as D2. 　　 Aluminum is soft, so it is easy to cause top damage, crushing, scratching, and deformation during stamping production. In addition to the requirements on the mold, the following points must be done during stamping production: 　　 1. To stamp aluminum parts well and reduce the defect rate, first do a good job of 5S, especially cleaning, including molds The punching table, assembly line and packaging materials must be free of sharp debris, no dirt, and regular and clear rectification, and the mold must be cleaned up and down without debris. 　　 2. If the product is found to have large burrs, it must be sent to the mold for repair and follow up. As a result, 　　3. Aluminum parts are more likely to heat up and become hard when they are stacked together. Therefore, when punching and cutting, it is necessary to apply a little pressure plate oil on the material (which can dissipate heat and smoothly dredge the blanking) and then press. 　　 4. For products with more punching, it is necessary to clean the surface of the mold once, so that the mold and product are always clean and free of debris, and the top damage is reduced.If the top damage is found, the problem of the top damage of the mold must be found and solved before the production can continue. 5. Pushing the flat mold and pushing block will produce aluminum scraps, so the aluminum scraps under the pushing block must be cleaned after the production of the pushing block every day. Jinnuo aluminum stamping drawing oil is low-viscosity, quick-drying volatile stamping oil. This product is formulated with refined base oil and special compound additives. It has excellent lubrication and cooling properties, and has fast volatilization, less residue and low odor. It is suitable for copper sheet, aluminum sheet, silicon steel sheet and galvanized sheet. It has been widely used in industries such as tank processing, air conditioning, electrical appliances, heat exchangers and air dryers. Related news: The characteristics of the main materials of stamping parts, the treatment of common problems of stamping parts, the characteristics of scaffolding stamping parts and the importance of inspections