Plaster casting mold fabrication method for a complicated structure aluminum alloy casting with a large inner cavity and a thin wall

US10946439B2 · kind B2 · utility

Assignee

• NO.59 INSTITUTE OF CHINA ORDNANCE INDUSTRY · CN

Inventors

• Qiang Chen · Sollentuna, SE
• Yuanyuan Wan · Chongqing, CN
• Zhihui Xing · Beijing, CN
• Gaozhan Zhao · Chongqing, CN
• Jianquan Tao · Chongqing, CN
• Zhiwei Huang · Lanzhou, CN
• Ming Li · Chongqing, CN
• Yanbin Wang · Beijing, CN
• Shuxin Chai · Chongqing, CN
• Hong Zhan · Chongqing, CN
• Maochuan Wang · Chongqing, CN
• Xiaohui Lin · Fuzhou, CN

Key dates

• Filing date: Dec 5, 2019
• Grant date: Mar 16, 2021
• Expiry date: Dec 5, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D39/06
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The application provides a plaster casting mold fabrication method for a complicated structure aluminum alloy casting with a large inner cavity and a thin wall, in which, a wax pattern is cleaned with a mixture; closed blind cavity and large plane unbeneficial to plaster mold-filling of the wax pattern are used to exhaust air by using vent holes and waterproof-breathable membranes in cooperation with each other; under pressure difference, plaster powder and mixed aqueous solution are vertically splashed and mixed in a mixing tank to reduce dust discharge; asynchronous mixing and grouting can be realized by left and right mixing tanks in an upper tank of a vacuum tank. The present application can effectively remove the surface parting agent, increase the wettability of the plaster paste and the wax pattern surface, and improve the surface finish of the casting mold.