Precision casting method for thick-wall base aluminium alloy casting

Abstract

The invention discloses a precision casting method for a thick-wall base aluminium alloy casting. The precision casting method comprises the steps of designing a wax mould, making the wax mould, moulding, carrying out sand lining, dewaxing, roasting a mould shell, baking the mould shell, modelling, smelting and pouring, cleaning the casting and ageing. The precision casting method for the thick-wall base aluminium alloy casting disclosed by the invention provides a reliable technical scheme for production of the thick-wall aluminium alloy casting, and a casting meeting the requirements is made; meanwhile, product quality and rate of finished products are greatly improved by adopting a pressure regulating casting moulding method, production cost is reduced, and great economic benefit is created.

Description

technical field

[0001] The invention belongs to the casting technical field of aluminum alloy castings, in particular to a precision casting forming method, which is especially suitable for investment precision casting forming methods of thick-walled castings with complex structures and high dimensional accuracy requirements. Background technique

[0002] As a traditional metal material, cast aluminum alloy is widely used in aerospace, aviation, automobile, machinery and other industries due to its low density and high specific strength. With the development of modern industry and new casting technology, cast aluminum alloy The demand is increasing. At the same time, with the development of high-performance aerospace vehicles, their internal components are also developing in the direction of large size, high precision requirements, complex structures, and high metallurgical mechanical properties.

[0003] Generally, thick-walled aluminum alloy castings are prone to serious ...