In the process of aluminum profile processing and production, some aluminum alloy products require subsequent aluminum profile processing, such as wire drawing, anodizing, etc., which are particularly prone to top scratches and scratches during stamping production. Special attention should be paid to the following points in mold manufacturing:
Aluminum profile processing
1. For the case that does not affect the number of projects, the punching holes should be arranged behind the project punching as much as possible, and even for products with a large number of punching holes, one more project can be considered and the punching holes should be arranged behind.
2.The aluminum material is soft and the mold is easier to block the material. Therefore, when designing the mold gap, a gap of 10% of the thickness of the bilateral material should be placed. The depth of the knife edge is more suitable for 2MM, and the taper is 0.8-1°.
3. When the aluminum profile is processed and bent, because the aluminum material is prone to produce aluminum chips during bending, it 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 polished Hard chrome plating is better.
4. For stamping parts that need to be processed after the anode, if there is a flattening and flattening process of 180°, the product cannot be completely pressed. Completely pressed will produce acid spitting. A 0.2-0.3MM seam is required to make the acid smooth It flows out in time, so limit blocks must be made in this process and the calibration mold is higher than the mold.
5.Because the aluminum material is brittle and easy to crack, especially in the case of reflexed edges, try not to make crimping, even if you do, make the crimping a little wider and lighter.
6. All aluminum knife edges are required to be cut with slow-moving wire to prevent burrs and irregular blanking. Aluminum parts are prone to high temperatures, so the punch hardness must be above 60°, at least using SKD11 material or above, and no D2 difference Proton.
Aluminum material is relatively 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. If you want to punch aluminum parts well and reduce the defect rate, you must first do 5S, especially cleaning, including molds, punching countertops, assembly lines and packaging materials must be free of sharp debris, no dirt, and regular and clear rectification. The mold must be cleaned up and down without debris.
2. If the product has a large burr, it must be sent to the mold for repair in time and follow up to the result.
3.Aluminum parts are easier to heat up and become hard when they are stacked together. Therefore, when punching and blanking, it is necessary to apply a little pressure oil on the material (which can dissipate heat and smoothly dredge the blanking) and then press.
4. For products with more punching holes, you need to clean the surface of the mold to ensure that the mold and product are always clean and free of debris, reducing top damage. If the top damage is found, the problem of the top damage of the mold must be found and solved before proceeding. produce.
5. Flattening the mold and pushing block will produce aluminum chips, so the aluminum chips under the pushing block must be cleaned every day after the push block is produced.