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Roller cold-treatment technology

A technology of cold treatment and roll, which is applied in the field of cold treatment of rolls, can solve the problems of shortening the temperature rise time of the roll, shortening the heating time of the tempering furnace, etc., and achieve the effects of shortening the production cycle, shortening the temperature rise time, and reducing the dosage

Active Publication Date: 2015-03-18
常州金安轧辊制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the shortcomings of the existing production process, the present invention improves the process of cold treatment of rolls, increases the process of water cooling treatment, effectively shortens the defects of excessively long production cycle and serious consumption of liquid carbon dioxide, and at the same time returns to temperature in a water treatment tank after low-temperature cold treatment , can effectively shorten the temperature rise time of the roll, shorten the heating time of the tempering furnace, and save electricity

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0013] The roll cold treatment process is characterized in that: the treatment process includes the following steps:

[0014] A. The quenched roll is put into the tank to be treated;

[0015] B. Put the roll to be treated into the water cooling tank, immerse in the water, and keep it for 2-3 hours. The temperature drops to -70°C, and at the same time, the cold air generated in the low-temperature treatment tank that needs to be decompressed is discharged into the water cooling tank to cool down the water in the water cooling tank;

[0016] C. Take out the cooled roll in the water cooling tank and dry it in the air;

[0017] D. Put the dried roll into a low-temperature treatment tank, immerse it in ethanol and keep it for 2-3 hours;

[0018] E. Take the roll out of the low-temperature treatment tank, put it into the water treatment tank, make the roll heat up quickly, and immerse it in water for 1-2 hours;

[0019] F. Take the roll out from the water treatment tank, put it i...

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Abstract

The invention belongs to the field of roller production and relates to a roller cold-treatment technology. The roller cold-treatment technology comprises the following steps of putting a quenched roller into a treatment waiting tank, immersing the roller needing to be treated into water in a water cooling tank for 2-3 hours, simultaneously, feeding liquid carbon dioxide into a low-temperature treatment tank so that the liquid carbon dioxide and ethanol in the low-temperature treatment tank are mixed fully and a temperature of the low-temperature treatment tank is reduced to -70 DEG C, simultaneously, discharging cool gas produced in the low-temperature treatment tank and needing to be subjected to pressure reduction into the water cooling tank, cooling water in the water cooling tank, taking out the roller cooled in the water cooling tank, carrying out air drying, putting the dried roller into the low-temperature treatment tank, immersing the roller in the ethanol for 2-3 hours, taking out the roller from the low-temperature treatment tank, putting the roller into a water treatment tank so that the roller is heated fast, immersing the roller in water for 1-2 hours, taking out the roller from the water, and feeding the roller to a tempering unit. The roller cold-treatment technology shortens a production period and reduces energy waste.

Description

technical field [0001] The invention belongs to a production method of rolls, in particular to a cold treatment process of rolls. Background technique [0002] After the roll is quenched, it is air-cooled to room temperature and then cold-treated, and it usually takes 1-2 days to air-cool to room temperature according to the season, and the production cycle is long; Directly put into -60° cold treatment tank for cold treatment, resulting in waste of liquid carbon dioxide. Contents of the invention [0003] Aiming at the shortcomings of the existing production process, the present invention improves the process of cold treatment of rolls, increases the process of water cooling treatment, effectively shortens the defects of excessively long production cycle and serious consumption of liquid carbon dioxide, and at the same time returns to temperature in a water treatment tank after low-temperature cold treatment , can effectively shorten the temperature rise time of the roll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D6/04C21D9/38
Inventor 张义静钱纪平周才东
Owner 常州金安轧辊制造有限公司