The utility model has the characteristic of uniform steaming time, saves heating-uptime and has remarkable energy saving effect.
具有统一煮熟的特点，节约加热时间， 节能效果明显。
2
Because the liquid nitriding the liquid and the work piece direct conduction heating, reduced the work piece heating-uptime, raised the azotize speed.
液体氮化由于液体与工件直接传导加热，缩短了工件加热时间，提高了渗氮速度。
3
If the refractory wall is covered with high reflectivity coating, the heating-uptime with workpieces is reduced obviously, whereas the heating-uptime at empty cannot be reduced;