Study on Wrinkling and Shrinkage Defects of Ductile Iron Reducer Housing in Lost Mold Casting
The nodular cast iron reducer shell produced by lost die casting has wrinkled skin and shrinkage hole defects on the surface of the production process.By optimizing the pouring system from top pouring to bottom pouring,the turbulent flow of iron liquid in the pouring process is effectively reduced,and the surface wrinkling of reducer shell is solved.The new heat dissipation technology is explored to solve the shrinkage hole defect in the hot zone of the casting.The test results show that the surface wrinkling defect of castings can be completely solved after the casting system is changed to bottom pouring.The new heat dissipation process solves the shrinkage hole defect,the process is simple and with a high production rate.
lost mold castingductile ironshrinkage holewrinkled skinheat dissipation technology
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