Production process of roll bar type gas quenching furnace

Abstract

The invention discloses a production process of a roll bar type gas quenching furnace. The production process is applicable to hardening and tempering of a track shoe. The production method comprises the following steps of: placing a workpiece onto a rack; starting a quick discharging motor after the workpiece moves to a photoelectric switch in a rear area of a heating furnace; transferring the workpiece from the furnace to a travel switch of a feeding roller table of a quenching tank; stopping to move to a specified position through a material shifting device; moving the workpiece to a conveying roller table of the quenching tank within the given time; stopping to start a cylinder and keep downward; lowering a conveying frame and the workpiece into the tank; compressing the workpiece with an upper pressure quenching head and a lower pressure quenching head; then starting an upper spraying pump and a lower spraying pump to spray and cool both surfaces of the workpiece; starting the cylinder and keeping upward after the operation is done; starting a conveying motor of the quenching tank after the cylinder is in place; conveying the workpiece onto a discharging roller table of the quenching tank; shifting the material; then returning into a tempering furnace; and finally cooling with the spraying pumps. By adopting the production process, the problem that the track shoe is seriously deformed in the conventional quenching process is greatly solved, small deformation and uniform hardness are realized, and the production efficiency and economic benefit are increased effectively.

Description

technical field [0001] The invention relates to the field of heat treatment of track shoes of engineering machinery, in particular to a production process of a roller bar type gas quenching furnace. Background technique [0002] The track shoe is a key part of crawler construction machinery, and it is also a vulnerable part. Therefore, the track shoe is required to have high wear resistance, good toughness and strength. The traditional track shoe heat treatment process will have many disadvantages such as cracking, uneven hardness, large deformation, and easy breakage, which greatly affects the service life. Quenching is the key to the heat treatment process of track shoes, and controlling its quenching time and deformation is very important. Contents of the invention [0003] The object of the present invention is to overcome the above problems existing in the prior art, and provide a production process of a roller-bar type gas quenching furnace. The present invention gr...

AI Technical Summary

Problems solved by technology

The traditional track shoe heat treatment process will have many disadvantages such as cracking, uneven hardness, large deformation, and easy breakage, which greatly affects the service life

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