The study on the forming of axle box body of B grade steel was conducted by semi_solid squeeze casting. The cast with complete shape and clear contour was obtained. But some apparent defects e.g. crack and cold laps were found on the surfaces of the cast. After an in_depth theoretical analysis on these defects, some critical influence factors such as the ejection force of punch, the temperature of mold, forming pressure etc. were determined. A great deal of experiments was carried out on the basis of theore...
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