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8篇 您的检索式：作者名="Liao Defeng"

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		题名	作者	年代	出处	被引量
	1	Research on cracking mechanism of the thin shell mould in expendable pattern shell casting during pattern removal process显示文摘Aiming at the cracking phenomenon of the thin shell mould in the expendable pattern shell casting during the pattern removing process, some systemic researches are presented.The influence of the pattern removing method and temperature on the pattern removing were investigated.The shell mould cracking mechanism was analyzed by using thermo-gravimetric analysis (TGA), and combining the temperature field and the volume change of the expanded polystyrene (EPS) foam pattern being tested.The results indicated that the shell mould was not easily cracked when the pattern removing process was carried out with the furnace being heated little by little because of the shell slowly shrinking with dehydration and shell strength gradually increasing.The shell mould was soon destroyed when it was set directly into the furnace at above 400 oC because of the thin shell mould rapidly shrinking and the foam pattern hindering.However, the shell mould had no cracking when it had been preheated for a long time even if the furnace temperature was above 400 oC and the shell was put into the furnace directly.Moreover, when the shell mould was directly set into the furnace at lower temperatures, 250 to 300 ℃, the shell would shrink slowly and the foam pattern would stay at the maximum expansion stage temperature of 100 to 110 ℃ for a long time; and the shell mould would experience an expansion force from the foam pattern for a long time.The expansion force is related to the pattern removing temperature, holding time, foam pattern thickness and density.Therefore, the foam pattern with higher density could make the shell crack.	Jiang Wenming Fan Zitian Liao Defeng Zhao Zhong	2010	China Foundry2010，7，3：	3
	2	A polishing process for nonlinear optical crystal fiats based on an annular polyurethane pad显示文摘	Liao Defeng Xie Ruiqing Hou Jing	2012	Applied Sucfbce Science2012，258，22：	1
	3	A new shell casting process based on expendable pattern with vacuum and low-pressure casting for aluminum and magnesium alloys显示文摘	Jiang Wenming Fan Zitian Liao Defeng		0，，14：	1
	4	A new shell casting process based on expendable pattern with vacuum and low-pressure casting for aluminum and magnesium alloys 显示文摘	Jiang Wenming Fan Zitian Liao Defeng	2010	International Journal of Advanced Manufacturing Technology2010，51，14：	1
	5	Investigation of microstructures and mechanical properties of A356 aluminum alloy produced by expendable pattern shell casting process with vacuum and low pressure 显示文摘	Jiang Wenming Fan Zitian Liao Defeng	2010	Materials and Design2010，32，2：	1
	6	Characteristics of hydrolyzed layer and contamination on fused silica induced during polis- hing显示文摘	Liao Defeng Chen Xianhua Tang Caixue	2014	Ceramics International2014，40，：	1
	7	A new shell casting process based on expendable pattern with vacuum and low-pressure casting for aluminum and magnesium alloys显示文摘	Jiang Wenming Fan Zitian Liao Defeng		0，，1：	1
	8	Study on the surface roughness of ceramic shells and castings in the ceramic shell casting process based on expandable pattern显示文摘	Liao Defeng Fan Zitian Jiang Wenming		0，，：	1

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