Large bearing quenching stirring device

Abstract

The invention belongs to the technical field of bearing quenching, and particularly relates to a large bearing quenching stirring device. The large bearing quenching stirring device comprises a stirring paddle and a driving mechanism, wherein the stirring paddle is arranged in a quenching oil pool; the driving mechanism drives the stirring paddle to move through a transmission mechanism; a flow guide cylinder covers the stirring paddle; one end, close to the bottom of the quenching oil pool, of the flow guide cylinder is open; a flow guide opening is formed in the flow guide cylinder in the circumferential direction; the flow guide opening communicates with the flow guide cylinder and the quenching oil pool; the flow guide opening is located above the stirring paddle; the height of the flow guide opening is matched with the height of a workpiece to be machined; and the flow guide cylinder at the upper part of the flow guide opening is closed. The large bearing quenching stirring device is novel in structure and convenient to work. Quenching oil in the pool can quickly impact the inner diameter of the workpiece through the flow guide cylinder, and heat on the surface of the inner diameter is taken away, so that the optimal quenching state is achieved.

Description

technical field [0001] The invention belongs to the technical field of bearing quenching, and in particular relates to a large-scale bearing quenching and stirring device. Background technique [0002] Large bearing rings need heat treatment after turning to ensure the accuracy and hardness of the bearing. The hardness and accuracy of the bearing ring raceway, inner diameter and outer diameter play a vital role in the service life of the bearing. When the large bearing ring is heat treated, it is usually quenched in a quenching furnace and then directly put into quenching oil for cooling. Due to the poor fluidity of the quenching oil, the oil on the inner diameter side, outer diameter side and upper and lower parts of the large bearing ring Uneven temperature will lead to the problem of low inner diameter hardness and shallow hardened layer when large bearings are quenched. In the existing process, when the bearing is quenched and cooled, compressed air is usually used to s...

AI Technical Summary

Problems solved by technology

When the large bearing ring is heat treated, it is usually quenched in a quenching furnace and then directly put into quenching oil for cooling. Due to the poor fluidity of the quenching oil, the oil on the inner diameter side, outer diameter side and upper and lower parts of the large bearing ring Uneven temperature will lead to low hardness of inner diameter and shallow hardened layer when large bearings are quenched

In the existing process, when the bearing is quenched and cooled, compressed air is usually used to spray the quenching oil at the bottom of the oil pool to stir the quenching oil to balance the oil temperature. The compressed air contains moisture and oxygen, which will oxidize the high-temperature oil and accelerate the aging of the oil. , the water in the oil will cause soft spots in the workpiece and affect the quenching quality

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