In the heat treatment process, no collision between the workpiece and balanced by furnaceheating, plus under the influence of controlled atmosphere to prevent air entering the furnace.
在热处理的过程中，工件相互间无碰撞，均衡的通过炉膛加热，加上可控气氛的作用下，阻止空气进入炉内。
2
The fuel used for heating is either furnace gas or coke oven gas. Thecombustion air is always preheated to improve fuel utilization.
用来加热的燃料不是高炉煤气就是焦炉煤气。燃烧用风通常要预热，以提高燃料的利用率。
3
The results show that the hardness and strength of the work piece after surface quenching protected by process tackling by means of air resistance furnaceheating are satisfy.