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一、概述我厂特制双头螺栓为数很多,是一种常用的产品,材料为优貭中碳合金鋼(38XA),并經調貭处理。調貭处理的基本目的是使成品获得所要求的綜合机械性能、細化晶粒的重結晶、改正所有以前处理的缺陷、以及获得一定分散度的組織成相;总之,是要使零件的潜在性能得到充分发揮,大大地提高了成品的强度、安全性及使用期限。 調貭可被理解为淬火后高温配火的处理。大家都知道,高温配火系在略低于临界点Ac_1的温度下处理,处理所占的时間远較淬火时間为长。
I. Overview I plant a large number of special studs, is a commonly used product, the material is excellent 貭 carbon alloy steel (38XA), and after conditioning 貭 deal. The basic purpose of the conditioning is to achieve the desired overall mechanical properties of the finished product, to refine the recrystallization of the grains, to correct all previously treated defects, and to obtain a certain degree of dispersion of the microstructure; in short, to make the potential of the part Performance has been given full play, greatly improving the strength of the finished product, safety and service life. Tiao 貭 can be understood as quenching high temperature fire treatment. As we all know, high-temperature fire distribution system is slightly lower than the critical point Ac_1 treatment, the processing time is much longer than the quenching time.