Molded quenching device for through-hardened steel ferrules

Abstract

The invention relates to a heat treatment quenching device, in particular to a press quenching device for through-hardened steel ferrules. The upper slider and the lower slider are respectively installed on the guide rail, and the piston rods of the upper mold cylinder and the lower mold cylinder are respectively connected with the upper slider and the lower slider. It is characterized in that the high-pressure pipeline is connected with the upper mold cylinder and the lower mold cylinder respectively. , the one-way speed regulating valve and reversing valve I for controlling the speed and direction of the upper mold cylinder are respectively installed on the high-pressure pipeline connected with the upper mold cylinder, and the pressure and pressure of the lower mold cylinder are respectively installed on the high-pressure pipeline connected with the lower mold cylinder. The pressure regulating valve and reversing valve II of the direction, the cooling oil for quenching are connected with the oil outlet on the lower mold and the oil injection ring. The device can precisely adjust the press quenching force and press quenching speed, has short entering quenching time, and the deformation of the quenched workpiece is small, effectively guarantees the quenching quality, and greatly improves the existing quenching and control technology.

Description

technical field [0001] The invention relates to a heat treatment quenching device, in particular to a press quenching device for through-hardening steel ferrules. Background technique [0002] The inner and outer rings of bearings are generally made of two materials, one is low-carbon low-alloy steel, which needs to be carburized and quenched, which is called carburized steel in the industry; most bearing materials are high-carbon chromium steel, represented by GCr15, and the industry Called through-hardened steel. Compared with carburizing steel: 1) Through-hardening steel can be directly heated and quenched, with short heating time and small deformation; 2) It is more sensitive to the quenching time, and requires a shorter residence time before quenching; 3) Quenching deformation varies with The shape and size of the workpiece change, and there is no fixed rule. In order to solve the problems of uncontrollable quenching process of through-hardened steel bearing rings, re...

AI Technical Summary

Problems solved by technology

In order to solve the problems of uncontrollable quenching process of through-hardened steel bearing rings, rework caused by irregular deformation and high reject rate, people have done a lot of work, such as the inventor in the utility model patent ZL200420086806. A multi-station quenching press is designed in "Quenching Press Machine for Inner and Outer Rings of Bearings", which partially solves the problem of quenching deformation of bearing rings

However, it is difficult to adjust the press quenching force in engineering applications, and it cannot be applied to products of various sizes. After quenching, the workpiece has local soft spots and quenching quality problems, etc.

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