【摘要】 氯化镁硬化剂所制型壳常温强度高,高温强度和氯化铵型壳相当,易清理,价格便宜。广泛使用将有很好的经济效益。更多还原

【Abstract】 The shell mould produced by magnesium chloride as hardening agent has a higher strength at room temperature, its high temperature strength is as good as that of shell mould for ammonium chloride, it is easy to clean and has a low-cost. If it is applied widely, it will make a large economic benefit.更多还原