Method for casting thin-shell nodular-cast-iron turbocharger
A turbocharger and ductile iron technology, which is applied in the casting field of thin-shell ductile iron turbochargers, to achieve the effects of ensuring reliability, improving strength and surface quality, and avoiding shrinkage defects
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[0036] A casting method of a thin-shell ductile iron turbocharger is characterized in that it comprises the following steps:
[0037] a. Process method design: center type is used. For the situation that the side door of the casting is not on the same plane and it is not easy to type, the curved surface hanging tire method is used in the process design to solve it. At the same time, considering the higher requirements for the flange joint surface of the casting, it In order to ensure the quality of the joint surface and avoid flange slag inclusion defects due to the large number of hole positions, the important flange faces downward from the parting method to ensure the cleanliness of the important flange faces. Closed pouring system, multi-point pouring method at the bottom of the mold, so that the molten iron can be filled smoothly;
[0038] b. Design of three-dimensional model of casting process: use computer software to establish a three-dimensional model consistent with t...
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