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1. (WO2017152589) METHOD FOR PRODUCING MOULD AND CORE THROUGH CURING SODIUM SILICATE SAND FOR CASTING BY BLOWING

Pub. No.:    WO/2017/152589    International Application No.:    PCT/CN2016/096655
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Aug 26 01:59:59 CEST 2016
IPC: B22C 9/12
Applicants: SHENYANG HYATON FOUNDRY MATERIAL CO,. LTD
沈阳汇亚通铸造材料有限责任公司
Inventors: JIN, Guangming
金广明
YIN, Deying
尹德英
WEI, Jia
魏甲
Title: METHOD FOR PRODUCING MOULD AND CORE THROUGH CURING SODIUM SILICATE SAND FOR CASTING BY BLOWING
Abstract:
Disclosed is a method for producing moulds and cores through curing sodium silicate sand for casting by blowing. A sand mixture for producing moulds and cores is filled into a forming tool by a core shooter or manually and then is shaped, and the operations of blowing, curing and stripping are carried out. Gases are sequentially blown in the order of CO2 and compressed gas; or gases are sequentially blown in the order of compressed gas-CO2-compressed gas. The method can solve the problem of over-blowing in the method for blowing CO2 into sodium silicate sand, so that the amount of added sodium silicate is small, the strength is high, the speed of mould core production is high, and the method can help to increase casting quality and improve working conditions.