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介绍一种对抽油泵之泵筒内表面进行高频感应淬火的工艺及设备。该工艺是将电磁感应器置于工件内，由感应圈通电后对边旋转边移动的工件内表面连续加热，感应圈的最后一匝的喷水环直接对已加热表面进行淬火，在工件内表面产生大约１０ ｍ ｍ 的马氏体硬化层，其硬度为 Ｈ Ｒ Ｃ≥５８，热影响层深度０２～０３ ｍ ｍ ，硬度为 Ｈ Ｒ Ｃ５０，而工件外部仍然保持未淬硬状态。该工艺采用的设备主要由高频振荡器、负载变压器、导管总成、感应器、支承架、支柱、导轨、支承辊、压辊和车床卡盘等组成。
A process and equipment for high frequency induction hardening of the inner surface of the pump barrel of the oil pump is introduced. The process is to place the electromagnetic inductor in the workpiece, and the inner surface of the workpiece which moves while rotating is heated continuously by the induction coil. The water spray ring of the last turn of the induction coil directly quenches the heated surface, The surface has a martensitic hardened layer of about 1.0 mm with a hardness of RHc≥58, a heat-affected layer depth of 0.2-2.3 m, a hardness of H R C50, while the outside of the workpiece remains intact Hardened state. The equipment used in this process mainly consists of high-frequency oscillator, load transformer, conduit assembly, inductor, support frame, pillar, guide rail, support roller, pressure roller and lathe chuck.