众所周知,在铸造生产中,热裂纹是一种极容易产生的铸造缺陷。仅就铸钢件而言,据统计,由于热裂纹造成的废品约占废品总数的20％以上。因此,探讨热裂纹产生的机理和防止方法,在理论与实践上均具有重要意义。 本文着重论述了ZSR合金热裂倾向性测定仪设计的理论依据,结构设计要点及仪器工作原理。该仪器已经鉴定投产,以满足上述需要。 As we all know, in the casting production, hot cracking is a very easy casting defects. In terms of steel castings alone, it is estimated that the scrap due to hot cracking accounts for more than 20% of the total scrap. Therefore, to explore the mechanism of hot cracks and prevent methods, both in theory and practice are of great significance. This article focuses on the ZSR alloy hot cracking tendency of the design of the theoretical basis, the main points of structural design and instrumentation. The instrument has been put into operation to meet the above needs.