Wheel body quenching device and method

A technology of quenching device and wheel body, applied in the direction of quenching device, furnace type, furnace, etc., can solve the problems of prolonging water spraying time, reducing production efficiency, excess quality, etc., and achieving the effect of ensuring uniformity and quenching quality

Active Publication Date: 2017-11-24
陕西奥尔德机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Wheel body quenching device and method
  • Wheel body quenching device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 , figure 2 As shown, the wheel body 20 quenching device of the present invention includes a machine tool and a motor; the machine tool is equipped with a cylinder and a manipulator; it also includes a fixed shaft 10, a moving shaft 9, a bearing, a bearing seat, a water spray ring and a gear 8; Bearings include sliding bearings and one-way flat-bottomed thrust ball bearings 3; the fixed shaft 10 is a hollow tube; the moving shaft 9 is a hollow tube, and the moving shaft 9 is sleeved on the fixed shaft 10; A sliding bearing is arranged between the inner wall of the moving shaft 9 and the outer wall of the fixed shaft 10; the moving shaft 9 is sleeved in the bearing seat, and a sliding bearing is arranged between the outer wall of the moving shaft 9 and the bearing seat; the bearing seat passes through the box The body 17 is fixed on the machine tool; the gear 8 is sleeved on the outer wall of the moving shaft 9 and electrically connected to the motor; t...

Embodiment 2

[0035] On the basis of Example 1, this implementation takes VOLVO supporting wheel EC210 (medium carbon alloy steel, 45# supporting wheel) as an example, parameter setting: heating temperature and heat preservation in the quenching furnace (roller hearth quenching furnace) Time, quenching temperature 840±10℃; holding time 2h±10min; feeding cycle 5min; water spray pressure 0.5~0.8Mpa; flow rate: outer surface 20~25m 3 / h; inner diameter surface 0.8~1.2m 3 / h; pre-cooling and quenching pre-cooling time on the inner diameter surface: 15-17S; water spraying time on the outer diameter surface: 65-70S; water spraying time on the inner diameter surface: 25-30S. Since the water spray on the outer diameter surface and the inner diameter surface can be controlled separately, the quenching of the medium carbon steel (poor hardenability) wheel body 20 not only meets the requirements for the hardness of the outer diameter surface (HRC48~62) and the depth of the hardened layer, but also req...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/667C21D9/34C21D1/18
CPCC21D1/18C21D1/667C21D9/34
Inventor 解醒侠李军王鲁
Owner 陕西奥尔德机械有限公司
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