Patent ID: 11858031
Assignee: JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A method of casting an integral multi-way valve, comprising:
obtaining structural parameters of a valve to be cast;
obtaining a valve body height L of the valve to be cast by taking a direction vertical to an axial direction of a main valve opening as a height direction;
obtaining a number of layers of ingates according to the valve body height L;
obtaining positions of various ingates on each layer according to the structural parameters of the valve to be cast;
arranging ingate models with corresponding layers and positions according to the structural parameters of the valve to be cast;
respectively arranging runner models connecting ingates corresponding to the ingates on each layer;
arranging a riser model and a sprue model connecting runners;
creating a sand core model to be subjected to 3D printing, and a sand mold model comprising the ingates, runners, a sprue and a riser according to the structural parameters of the valve to be cast, the ingate models, the runner models, the sprue model and the riser model;
performing 3D printing according to the sand mold model and the sand core model to obtain a sand mold and a sand core of the valve to be cast;
performing pouring by using the sand mold and sand core obtained from 3D printing to obtain an integral valve body;
arranging a through-type exhaust passage in a part of the sand core corresponding to the main valve opening; and
arranging a conformal exhaust hole in a corresponding part of the sand core corresponding to other valve openings other than the main valve opening and configured to be connected to a sand mold periphery.