Induction heating surface hardening treatment

 The present invention relates to environmentally friendly method for preparing stainless steel pump. Solve the existing pump. Life is short. Characterized in that: stainless steel as the material of pump barrel, before the step in the straightening process according to the following procedure, i.e. normalized, i.e. at a temperature of 800 ~ 930 ℃ normalizing conditions for 3 to 4 hours; Induction heating surface hardening treatment, i.e. at a temperature of 840 ~ 1070 ℃, the surface of the sensor and the gap is in the pump cylinder between 2 ~ 2.5mm,Molybdenum tube speed sensor 2 ~ 8mm / s, rotational speed of the pump cylinder 50 to 100 r / min under the conditions of use of the machine to drive the pump cylinder rotating quenching, induction hardening is moved continuously heating; cooling, the use of a spray 20 ~ 30 ℃ quenching fluid, through a quench liquid on the sensor orifice for ejecting a cooling treatment; tempering, the cooling cylinder at a temperature of 150 ~ 230 ℃ furnace under optimal conditions for 30 to 60 minutes after the rapid cooling baked. Has high hardness and hardening depth characteristics of the deep, the pump cylinder good quality, no corrosion problems, so that the pump life cycle greatly improved, no environmental pollution, are environmentally friendly oil field equipment, suitable for application