Die-casting parts can complete the structure, corners and corners that are difficult to achieve in forging parts, car parts /CNC parts, the quality of oxidation, and the quality of die-casting parts are very key, and a small change and detailed process support control determines the quality of the anode. Manufacturers engaged in the oxidation of die casting parts must scientifically control the flow channel technology, die casting process and post-processing methods of the mold, with this series of strict control process, can ensure the smooth production of oxidation quality.
Mold runner, gate design, mold temperature control; Due to the characteristics of large aluminum content of raw materials, poor fluidity and high working temperature, the flow channel and gate of the mold are set up according to the short range design. The mold temperature machine should be used to ensure the balance temperature of the mold to overcome local undercooling and excessive flow marks.
The use of raw materials to avoid pollution factors; Select raw materials with low impurity content; When the production is used, the pollution of silicon, copper, iron and zinc elements should be eliminated, that is, high-quality graphite crucible must be used separately, and other raw materials cannot be mixed for production;
Die casting process control, reduce water marks and black watermarks; The use of professional release agent in die casting production, scientific spraying, reduce the residual water in the mold cavity, avoid the water pattern of die casting; Control the pressure and speed of die casting, reduce local overpressure, easy to stick mold;
Pre-blank processing; After machining, according to the needs of the product, hand polishing or grinding to remove burrs and oxide layer;
Selection of anode surface treatment plants; Because the bottom layer of the skin of the die casting parts contains different degrees of shrinkage holes and stains; Therefore, the pre-anodic treatment must be based on the conventional aluminum alloy process, adjust the method, so that the oxidation layer on the surface of the casting can be cleaned before the anodic process, that is, the conventional post-oxidation process production can not meet the oxidation process of the die casting, should be tested and audited before mass production, to verify the suitable professional manufacturers.
