The characteristics of pipe radiator heating scale-free roller furnace and quenching machine were mainly introduced.
重点介绍了辐射管加热无氧化辊底式炉和辊式淬火机的特点。
Hard Spot. An area in the pipe with a hardness level considerably higher than that of the surrounding metal, usually due to localized quenching.
硬块。通常由于局部淬火引起钢管上某一部位硬度值远高于周围金属的硬度值。
The results show that by using spray and strong breeze quenching, heavy-calibre wear-resisting bend pipe made of low alloy steel may easily arrive a good quenching effect.
结果表明，大口径低合金钢耐磨弯管采用雾风冷却可以方便地得到满意的淬火冷却效果。
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