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[China Aluminum Network] Aluminum alloy stamping because the material is relatively soft relative to the metal iron, expensive, easy to break and some aluminum alloy products still need follow-up processing, such as drawing, anodizing, etc., in the stamping production is particularly prone to top injury Scratches, special attention should be paid to the following points in the mold manufacturing:
1. For punching holes as far as possible without affecting the number of projects in the rear engineering punching, and even for the punching of a large number of products can be considered to do more than one project but also to punch behind the punch.
2. The aluminum material is softer and the mold is easier to block material. Therefore, when designing the mold to release the gap, a gap of 10% of the double material thickness should be placed. The straight-to-deep position of the blade is more suitable for 2 mm, and the taper is suitable for 0.8-1°.
3. When bending, due to the aluminum material is easy to produce aluminum swarf when bending, it will cause point injury? Indentation, aluminum raw material need to be affixed PE film, in the case of the roller and the plating, the forming block is polished hard chrome plating Better.
4. For stamping parts that require anode post-processing, if they are flattened and flattened 180°, the product can not be fully pressed, and the full pressure will produce acidification phenomenon, and 0.2-0.3MM seams need to be left for the smoothness of the acid. Flow out in time, so in this process must be limit blocks and calibration mode higher than the mold.
5. Because aluminum material is relatively brittle and easy to crack, especially in the case of anti-folding, so try not to do pressure line, even if you do, but also to make the width of the pressure line a little, playing a little shallow.
6.All aluminum parts require cutting with slow thread cutting to prevent burrs and blanking phenomenon, aluminum parts are prone to high temperature, so the punch hardness requirements above 60 °, at least with SKD11 material above, there is no difference between D2 Quality punch.
Aluminum material is soft, so it is easy to produce top damage, pressure injury, scratching and deformation during stamping production. In addition to the requirements on the mold, the following points must be made during stamping production:
1. In order to punch aluminum parts well and reduce the defective rate, we must first do 5S, especially cleaning, including molds, punching table, assembly lines and packaging materials must be sharp and clean without any sharp debris. The mold must be cleaned up and down, no debris.
2. It is found that the product burr must be promptly sent to the mold for repair and follow up to the result.
3. Aluminum parts are more prone to heat, and the accumulated pressure becomes harder. Therefore, when punching and blanking, it is necessary to apply some pressure oil on the material (that is, it can dissipate heat, and can also smoothly clear the blanks) and then stamp.
4. Punching more products need to do a bit to clean up the mold surface, so that the mold? Product is always clean and free of debris, reduce top injuries, found that the top injury must find the mold top problem and solve the problem before they can continue produce.
5. Pushing the die push block will produce aluminum shavings, so after the pushing block is finished every day, you must clean the aluminum chips under the push block.
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