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。
After the water quenching of the drill pipe steel grade, the cooling method of drill pipe welds is changed to the quick water cooling instead of the previous high-pressure air cooling.
钻杆钢种水淬化后，焊缝热处理的冷却方式由以前的高压空气冷却转变为快速水冷却。
The practice has proved the steel pipe produced by on- line water quenching and tempering a rational technology with low cost and strong marketing competition.
实践证明，利用轧后余热对钢管进行在线水淬，工艺合理，加工成本低，产品具有较强的市场竞争力。
The utility model has the advantages that the utility model is simple in structure, convenient to assemble and operate and stable in steel pipe water quenching quality.
本实用新型具有结构简单，安 装操作方便，钢管水淬质量稳定等优点。
The utility model has the advantages that the utility model is simple in structure, convenient to assemble and operate and stable in steel pipe water quenching quality.
本实用新型具有结构简单，安 装操作方便，钢管水淬质量稳定等优点。
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