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火焰表面淬火法虽是一项陈旧古老和不易严格控制的热处理工艺,但因其操作方便,设备简单,不受零件尺寸和形状的限制又可进行局部淬火等优点,现仍被国内外广泛采用。本文以“交叉滚柱滚盘‘V’型滚道火焰表面淬火”为例,介绍了表面淬火火焰加工器混合室直径的选择和淬火喷咀的设计与制作,以及如何选择淬火移动速度等工艺参数。文中对如何使用“半自动气割机”作为淬火机也作了详致介绍,利用“半自动气割机”作为淬火机的动力装置,可以节省一套速比很大的能无级调速的减速机构,上马快,效果好。这种方法特别对于大型工件最为适用,文中认为:即使工件直径增大至5～10米,仍能取得良好效果。文中列举了塔式起重机“交叉滚柱滚盘”滚道淬火工艺实例,附有金相及硬度检查结果,可供从事热处理工作的技术人员和工人参考。
Although the flame surface quenching method is an old and not easy to strictly control the heat treatment process, but because of its ease of operation, simple equipment, parts size and shape without the limitations of local quenching can also be advantages, are still widely adopted at home and abroad . In this paper, the cross-roller “V ’raceway flame surface quenching” as an example, introduced the surface quenching flame processor mixing chamber diameter selection and quenching nozzle design and production, and how to choose the quenching speed and other processes parameter. The article on how to use the “semi-automatic gas cutting machine” as a quenching machine also made a detailed introduction, the use of “semi-automatic gas cutting machine” as a quenching machine power plant, you can save a large speed ratio stepless speed reduction mechanism, Quickly launched, the effect is good. This method is particularly suitable for large-scale workpieces, the article said: even if the workpiece diameter increased to 5 to 10 meters, can still achieve good results. The article lists tower crane “cross-roller” roller quenching process example, with metallographic and hardness test results, for heat treatment work in the technical staff and workers reference.