Method for solving cracks on surfaces of Inconel alloy castings

Abstract

The invention discloses a method for solving cracks on surfaces of Inconel alloy castings, and relates to the technical field of casting manufacturing. The method comprises the following operation steps: casting is performed according to convectional requirements; the casting temperature is determined as 1400-1500 DEG C according to such factors as wall thicknesses of the castings; the insulationtime is determined according to MAGMA simulation software and scene temperature measurement to guarantee total solidification of molten steel in casting molds; knockout sand removal is performed according to the determined insulation time; the whole sand removing process is finished within 10-40 min according to different requirements on sizes and wall thicknesses of the castings; space with excellent ventilation is reserved beforehand for placing the castings; and the cleaned castings are placed on the space for natural cooling. The method can solve generation of the cracks on the surfaces ofthe castings, provides guarantee to the product quality, meanwhile, greatly reduces the production period and the production cost, and creates excellent economical benefit to factories.

Description

technical field [0001] The invention relates to the technical field of casting manufacturing, in particular to a method for solving surface cracks of Inconel alloy castings. Background technique [0002] The commonly used production process of the existing Inconel alloy castings is to keep the heat in the sand mold to a certain temperature after pouring, then take out the box for sand cleaning, remove the pouring riser, and then enter the furnace for heat treatment. The disadvantage of this solution is that some harmful brittle phases will be produced during the cooling process of the casting, resulting in cracks on the surface of the casting. At the same time, this material has poor weldability, resulting in difficult repairs, high scrap rates, and high production costs. Improvement is urgently needed. Contents of the invention [0003] The object of the present invention is to aim at the defects and deficiencies of the prior art, and provide a method for solving surface ...

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that some harmful brittle phases will be produced during the cooling process of the casting, which will lead to the generation of cracks on the surface of the casting. At the same time, the weldability of this material is poor, resulting in difficult repairs, high scrap rates, and high production costs. Improvement is urgently needed

Images