What are the factors of die casting quality and the adjustment of common problems.
It is difficult to achieve stable, reliable and accurate control of die casting process parameters under the condition of die casting equipment.
1, casting materials reduced rate: casting data rate normally with uniform percentage or given in the form of percentage must change the size of, high-precision mold die casting planning time to note that all the more necessary to do experiment mold. After the data is obtained on the experimental die, we plan to make the molds for many production.
2. The planning of die-casting parts, in the time of planning, should pay special attention to the construction of the die-casting parts as far as possible. Otherwise, there are defects such as pits, holes and cracks in the die casting. Otherwise, it will cause unnecessary trouble for the formulation and processing of die planning and processing. It will produce a lot of substandard goods.
3. The mold structure, machining accuracy and the selection of mold materials are also well selected: the aluminum alloy die casting is made by die casting, and the material selection of the mold is also connected with the quality of the goods. The mold structure is not good enough, and it is difficult to qualify the product even if it is technically adopted.
4. Preparation and performance of the die casting technology: the formulation of die-casting technology is determined by the technical level of the operator, the mold and the quality of the die casting equipment.
Causes: 1. The mold temperature is too low; 2. Low metal liquid temperature; 3. The press pressure is too small, 4. The metal liquid is insufficient and the pressure is too high; The air doesn't come out.
Adjustment method: 1. Increase pressure casting mould and metal liquid temperature; 2. Replace the large pressure die casting machine. 3. Add enough metal liquid to reduce the injection speed and increase the inlet thickness.
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