Method for producing turbocharger shell for wet-type casting vehicle

Abstract

The invention discloses a method for producing a turbocharger shell for a wet-type casting vehicle. According to the method, raw sand resources can be remarkably saved, and the casting technology difficulty is reduced. According to the technical scheme, the method for producing the turbocharger shell for the wet-type casting vehicle comprises the following steps that a traditional damp mold sand is used for modeling, a straight runner is used as the center in a sand mold, and sand boxes are symmetrically arranged, wherein each sand box is provided with four pieces; the straight runner communicates with an upper sand box and a lower sand box, and a cross runner is arranged at the bottom end of the straight runner, and a pouring gate nest with a rectangular longitudinal section shape is arranged at the tail end of the cross runner, and meanwhile, inner runners are arranged at the far end of the cross runner, and each volute casting communicates with other volute castings through two inner runners; ceramic filter sheets and follow-up cold iron are placed on the sand core lower cores on the two sides of the symmetric straight runner, so that the core making is completed; the follow-up cold iron is placed at a hot joint part, linking to the runners, of the bottom of each volute; simulation results of the defects of shrinkage porosity and shrinkage cavity are combined and compared to determine the optimal process parameters; and finally, in the medium-frequency induction furnace, molten metal enters from top to bottom through a gate cup and enters a mold cavity from different inner gates, thus complete the filling.

Description

technical field

[0001] The invention relates to the field of turbochargers, in particular to the technical field of production methods of turbocharger housings for automobiles, in particular to a wet casting method for producing turbocharger housings for automobiles. Background technique

[0002] Turbochargers are widely used in large agricultural, engineering, mining machinery trucks, large buses and ships. Turbochargers can increase the power of automobile engines, reduce fuel consumption, reduce noise and pollution, and effectively improve engine power, economy and environmental performance. In many gasoline and diesel engines, turbocharger technology is used in order to continuously improve the efficiency of the engine, reduce exhaust emissions and save fuel. Turbocharging (Turbocharger) is a technology that uses the exhaust gas generated by the operation of an internal combustion engine to drive an air compressor (Air-compressor). Simply put, a turbocharger is an air ...

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