Clarification of thermal decomposition products and dyamic equilibrium in thermal decomposition gas layer on evaporative pattern casting process

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420760
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Metal making/Resorce production engineering
• Research Institution: Kansai University
• Principal Investigator: MARUYAMA Toru 関西大学, 化学生命工学部, 教授 (80330174)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 消失模型鋳造 / 熱分解 / ポリスチレン / 湯流れ

Outline of Final Research Achievements

In order to clarify the relationship between residue formation and dynamic equilibrium in thermal decomposition gas layer on evaporative pattern casting process, influence of molten metal temperature on mold filling rate and thermal decomposition products formed during casting were examined. The dynamic equilibrium is depolymerization type until 900℃ of molten metal temperature, and does not become static state due to decomposition of monomer over 950℃ of molten metal temperature. Also, the amount of liquefied resin was extremely large. Carbon particles as results of thermal decomposition were suspended in the liquefied resin. In addition, molten metal flow become slow, and residue was formed.

Free Research Field

鋳造工学