Talking about the factors that affect the size of the die castings.sheet metal and fabrication

　　In the process of die -casting, especially some structural parts, there are very strict requirements for product size, so we must pay special attention in the production process. Let ’s talk about the factors that affect the size of the die -casting parts. Intersection

　　1. Dimension error caused by molding shrinkage

　　The molding contraction is the main factor affecting the size of the die casting. Because the molding contraction is a complicated process, the computing contraction rate has a wide range of choice. According to the external shape and structural characteristics of the die casting, the contraction of each part of the size is appropriate for molding. Rate and determine the size of the molding are the key issues to ensure the size accuracy of the die casting.

　　2. Manufacturing error of molding parts

　　① The impact of the benchmark surface and processing process of molding parts, mold processing, and processing technology.

　　② Processing error of molding parts

　　③ The assembly error of the molding parts

　　④ Error caused by the slope of the molding parts of the molding part

　　3. The influence of the volatility of the contraction during the die casting

　　① The impact of die -casting formation process parameters, such as compressing ratio and internal pouring mouth speed

　　② The effect of mold temperature

　　③ During the mold, the impact of the temperature of the die casting

　　4. Errors caused by the relative movement of structural parts

　　①Codmo error

　　② The movement error of the side core and the active core.

　　③ Errors caused by the accuracy and process performance of the die casting machine

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