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Mar. 27, 2026
Overview of Induction Quenching Technology on the Surface of Pumping Rod
Why is the sucker rod quenched? In order to improve the fatigue strength of sucker rods, surface strengthening treatment methods have been widely used in recent years, among which surface induction heating quenching method has been applied earlier and has obvious effects. Surface induction heating quenching can not only change the microstructure and properties of the sucker rod surface, but also generate significant residual compressive stress on the sucker rod surface, thereby improving the static strength, fatigue strength, and corrosion fatigue strength of the sucker rod.
Sucker rod induction quenching production line

The key technology of induction heating quenching on the surface of the sucker rod lies in simultaneously quenching the rod body and head, and obtaining a uniformly and continuously distributed hardened layer. Induction heating quenching on the surface can not only improve the fatigue strength of the sucker rod, but also enhance its corrosion fatigue strength. To solve this technical key, four technical difficulties must be addressed: selection of power frequency, determination of induction coil structure and size, continuity of quenching layer, and adjustment of quenching layer depth.

Forever Electromechanical is a professional manufacturer of induction heating equipment in China. The Induction heat treatment equipment has passed ISO certification and uses high-quality components with good heating efficiency. Forever is a well-known manufacturer in the industry.

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