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Optimization of Casting Process for Test Machine Nut

At present, the nut of testing machine produced by our company is easy to produce shrinkage cavity and porosity defects, and the reject rate is more than 60%, but the yield is low. Based on this situation, process improvement is required. The screw nut belongs to medium wall thickness...

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Problems and Solutions in Process Test of Sand Castings

The sand casting surface obtained from the test is complete, but shrinkage cavities are found at the bearing holes of the box sand casting after machining, which are distributed circularly. The upper part of the pouring position is larger than the lower part. See Figure 1 for the specific...

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Design of Metal Mold for Sand Casting

According to the casting structure and sand casting process, the metal mold for the box and cover is designed. The mold of the box mainly includes left mold block, right mold block, push plate, ejector pin, upper mold core pulling block and other mold parts, which are vertically divided,...

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