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Quenching process and its quenching device for bearing internal and external rings

A technology for quenching equipment and inner ring of bearings, which is applied in the direction of quenching equipment, heat treatment equipment, manufacturing tools, etc., can solve the problems of low utilization rate of heating equipment, inability to process black leather, uneven deformation, etc. The effect of small area and uniform hardness

Active Publication Date: 2006-11-08
NINGXIA MACHINERY RES INST
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  • Abstract
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AI Technical Summary

Problems solved by technology

Due to the large quenching distortion and serious shrinkage of the bearing steel, the carburized layer is shallow or even processed in the subsequent processing, or it is scrapped in batches due to uneven deformation and black skin in some areas cannot be processed.
At the same time, when heating the inner and outer rings of the bearing, the inner and outer rings are heated separately, the utilization rate of the heating equipment is very low, and a lot of energy is wasted
[0003] In order to solve the problems of large quenching distortion and serious shrinkage, people have done a lot of work. The inventor applied for "A Quenching Press for Inner and Outer Bearings with Multi-station Bearings" on July 28, 2004. New patent, the technical solution of this patent includes base, column, support beam, upper and lower power cylinder, upper and lower slider, upper and lower spindle, upper and lower mold, guide rail, cooling oil tank

Method used

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  • Quenching process and its quenching device for bearing internal and external rings
  • Quenching process and its quenching device for bearing internal and external rings
  • Quenching process and its quenching device for bearing internal and external rings

Examples

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Embodiment Construction

[0022] A set of railway bearings is composed of two inner sleeves and an outer sleeve. When quenching the inner and outer rings, the two bearing inner sleeves are stacked and installed in a bearing outer sleeve, and then sent to a continuous heating furnace for heating , the heated inner and outer rings of railway bearings are transported to such as figure 1 On the workbench 26 of the bearing inner sleeve quenching equipment shown, the manipulator 22 installed on the guide rail 18 of the protruding part of the beam 3 grabs the bearing outer sleeve 7, moves to the left along the guide rail, and puts it into the box-type The bearing jacket on the workbench 14 is quenched in the lower mold 15, and the two sets of bearing inner sleeves 23 are quenched by the bearing inner sleeve quenching equipment installed on the right side.

[0023] After the quenching is finished, after the bearing outer cover 7 is picked up by the manipulator 22, the material is discharged after being fitted ...

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Abstract

The present invention relates to heat treatment, and is especially internal and external bearing ring quenching process and quenching press. The quenching process includes the steps of mounting and heating, feeding quenching material, simultaneous quenching of the internal bearing ring and the external bearing ring, and discharging. The special quenching apparatus includes internal bearing ring quenching apparatus, external bearing ring quenching apparatus and manipulator for grabbing the outer bearing ring. The external bearing ring quenching press is provided with fixing mold, the internal bearing ring quenching apparatus is provided with expanding mold, and the quenching process is one closed immersing process. The present invention has homogeneous quenching and is suitable for batch heat treatment.

Description

technical field [0001] The invention relates to a heat treatment process and device, in particular to a quenching process and quenching equipment for the inner and outer rings of a bearing. Background technique [0002] In the process of bearing processing, it is necessary to quench the inner and outer rings of the bearing, especially with the repeated speed increase of my country's railways, the requirements for railway bearings are also getting higher and higher. The thickness of the carburized layer is required to be 1.5-2.3mm for the finished products of the inner and outer rings of railway bearings, the hardness of the surface of the workpiece after quenching and tempering is 60-64HRC, and the hardness of the core is 35-45HRC. Due to the large quenching distortion and serious shrinkage of the bearing steel, the carburized layer is shallow or even processed in the subsequent processing, or it is scrapped in batches due to uneven deformation and black skin in some areas c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/40C21D1/18C21D1/62
Inventor 张光荣刘天虹周建宇王国升王淑芳
Owner NINGXIA MACHINERY RES INST
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