Poured salt core for casting and preparation method thereof

Abstract

The invention discloses a poured salt core for casting and a preparation method thereof. The poured salt core is composed of edible salt, a reinforcing agent, a binding agent, an assistant and a filling agent; the reinforcing agent is one kind of or multiple kinds of aluminum oxide, mullite, short asbestos wool and glass fibers; the binding agent is one kind or multiple kinds of kaolin, calcium carbonate and glass water; the assistant is one kind or multiple kinds of potassium chloride and sodium fluorosilicate; the filling agent is sodium carbonate; the salt core is non-toxic, odorless and free of harmful impurities, mineral salt is taken as the main raw material, the reinforcing agent, the binding agent, the assistant and the filling agent are additionally added, after high-temperature melting is carried out at the temperature of more than 800 DEG C, and the molten mixture is poured into a required mold so that the salt core with the required shape can be prepared. The poured salt core is uniform, good in stability, easy to demould, the preparation process of the common salt core is simplified, and compared with a common salt core, the density, the hardness and the tensile strength and the like are improved by more than one time; and according to the formula, the salt core is prepared by a complexity inner cavity pouring filling method for the first time in the world, and theblank is filled in the world.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to the salt core casting of aluminum alloy products or plastic products, in particular to a pouring salt core for casting and a preparation method thereof. Background technique [0002] Traditional salt cores are made by compressing edible salt in a mould. The salt cores produced by this method are simple in shape and cannot be made into complex salt cores; It is difficult to press and the prepared salt core is easy to loose; the strength is low, and pressure casting cannot be performed. [0003] Hunan Jiangbin Machinery (Group) Co., Ltd. has disclosed an invention patent with the patent number of 101869963A, which uses a complex formula to produce salt cores, but its preparation process is first pressed and then sintered. The salt cores produced by this method are volatile. The strength is still low, and it is impossible to prepare large-scale and complex-shaped salt cores. [0...

AI Technical Summary

Problems solved by technology

[0002] Traditional salt cores are made by compressing edible salt in a mould. The salt cores produced by this method are simple in shape and cannot be produced with complex shapes; It is difficult to press and the prepared salt core is easy to loose; the strength is low, and pressure casting cannot be carried out

[0003] Hunan Jiangbin Machinery (Group