Large casting lost-foam resin sand casting process
A casting process and technology for large castings, applied in the field of lost foam resin sand casting process for large castings, it can solve the problems of high manufacturing cost of foamed metal molds, difficult control of casting defects, and no means of eliminating replacement air gap pressure, etc., to achieve a breakthrough in metal Material restrictions, processing performance and efficiency improvement, and the effect of saving non-renewable resources
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[0022] In order to better understand and implement, the following is a detailed description of a large-scale lost foam resin sand casting process:
[0023] 1. Model making:
[0024] (1) Prepare the processing program according to the automobile stamping die castings, and use the model layering and splicing technology for programming. The program content includes the processing steps, the feed amount, the tool path mode and the selection of tools;
[0025] (2) Model blanking: according to the contour size of the lower mold of the automobile stamping die, plus a processing allowance of 18mm, respectively blanking and bonding, the apparent density of the EPS foam board is 18kg / m 3 ;
[0026] 2. Group model:
[0027] (1) Contour processing: According to UG programming, the contour size of the lower mold base model is processed through the vertical machining center, and the processing size is inspected with a mold ruler;
[0028] (2) Use drills and profiling cutters to process special parts a...
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