铸鉄之热处理为一范围广阔而目前尚待发展之工作。其所以进步较迟之原因,主要为若干物理性能及经济条件之因素,尚待解决。由试验可得,经处理后之铸铁,其拉力强度及韧性可较「铸态」之工件提高1000至1750公斤/平方公分,而硬度则一般可达皮氏200至500。 The heat treatment of castings is a wide range of work yet to be developed. The reason for its late progress is mainly due to a number of factors of physical and economic conditions and remains to be resolved. From the test, the treated cast iron can have a tensile strength and toughness of 1000 to 1750 kg / cm² higher than that of the as-cast part, while the hardness can generally reach 200 to 500 Pa.