Some observations of voids formation were carried out by using low carbon steel with three kinds of heat-treatment, namely, normalizing, annealing and spheroidizing.
对三种不同热处理(正火、退火、球化)的低碳钢中微空洞的形成进行了一些观测。
The most commonly used heat treatments on metals are softening annealing, quenching, normalizing, surface hardening treatment, precipitation hardening.
最常见的热处理包括软化退火、淬火、正火、表面强硬化、淀积硬化。
The properties of the dies can be improved through pre treatment-high tempreature annealing or normalizing.
对电渣熔铸模块采取必要的预处理——均匀化退火或正火，可以进一步提高模具的使用性能。
Before 1949, Beijing has heat treatment furnace, salt dissolved by thermocouples means furnace, quenching and tempering, parts of annealing, normalizing, quenching and tempering, carburizing and etc.
热处理1949年前，北京已采用电炉、盐溶炉、热电偶等手段进行零件退火、回火、淬火、正火、调质、渗碳等热处理。
Before 1949, Beijing has heat treatment furnace, salt dissolved by thermocouples means furnace, quenching and tempering, parts of annealing, normalizing, quenching and tempering, carburizing and etc.
热处理1949年前，北京已采用电炉、盐溶炉、热电偶等手段进行零件退火、回火、淬火、正火、调质、渗碳等热处理。
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