Wheel body quenching device and method

Abstract

The invention discloses a wheel body quenching device and method and belongs to the field of wheel body machining. The wheel body quenching device comprises a machine tool and a motor and is characterized by further comprising a fixed shaft, a movable shaft, bearings, a bearing seat, water spraying rings and a gear; the bearings comprise the sliding bearing and the one-way flat bottom thrust ball bearing; the sliding bearing is arranged between the inner wall of the movable shaft and the outer wall of the fixed shaft; the bearing seat is fixed to the machine tool; the gear is connected to the outer wall of the movable shaft in a sleeving mode and connected with the motor; the outer wall of the fixed shaft is sleeved with the one-way flat bottom thrust ball bearing; a quenching tray is arranged at the front end of the movable shaft; the front end of the fixed shaft is sleeved with the inner water spring ring; and the outer water spring rings are arranged on the machine tool. The outer diameter and the inner diameter of a wheel body are quenched simultaneously. The hardness of the core part and the inner diameter face of alloy steel, especially carbon steel, is well enhanced, the hardness uniformity of the core part and the inner diameter face of the alloy steel, especially the carbon steel, is well improved, and a good effect is achieved. Through rotating of the wheel body, the outer water spraying rings and the inner water spraying ring keep static water spraying, relative movement between the outer diameter face of the wheel body and the water spraying rings as well as between the inner diameter face of the wheel body and the water spraying rings is achieved, and quenching uniformity is guaranteed.

Description

technical field [0001] The invention belongs to the field of wheel body processing, and in particular relates to a wheel body quenching device and a quenching method. Background technique [0002] At present, there are two types of quenching for the wheel body of the chassis parts of construction machinery: surface intermediate frequency quenching and overall heating surface quenching. The present invention only elaborates on the overall heating surface quenching of the wheel body. At present, domestic medium and large tonnage rollers adopt the method of overall heating and quenching of the outer surface of alloy steel to obtain the surface hardness and hardened layer depth required by the design. Satisfied, on the one hand, this increases the depth of the hardened layer of the wheel body, resulting in excess quality, and increases the risk factor of wheel body cracking; on the other hand, it reduces production efficiency. At the same time, due to the unevenness of the thic...

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Problems solved by technology

At present, domestic medium and large tonnage rollers adopt the method of overall heating and quenching of the outer surface of alloy steel to obtain the surface hardness and hardened layer depth required by the design. Satisfied, on the one hand, the depth of the hardened layer of the wheel body is increased, resulting in excess quality, which increases the risk factor of wheel body cracking; on the other hand, the production efficiency is reduced

At the same time, due to the unevenness of the thickness of the wheel body, the hardness of the inner diameter surface is uneven

When carbon steel (45#) is used for the wheel body, due to the influence of material hardenability factors, prolonging the water spray time cannot improve the hardness of the core and inner diameter surface of the wheel body, which will reduce the overall mechanical properties of the wheel body

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