CN103614523A

CN103614523A - Roller cold-treatment process

Info

Publication number: CN103614523A
Application number: CN201310624298.9A
Authority: CN
Inventors: 黄金荣; 范银芳
Original assignee: YINXIN ROLLER CO Ltd HUZHOU
Current assignee: YINXIN ROLLER CO Ltd HUZHOU
Priority date: 2013-12-02
Filing date: 2013-12-02
Publication date: 2014-03-05

Abstract

The invention relates to a roller cold-treatment process, which comprises the following steps: (1) placing a quenched roller into a tank for treatment; (2) placing the roller to be treated into a water cooling tank, and simultaneously, injecting liquid carbon dioxide into a low-temperature treatment tank; (3) taking out the cooled roller from the water cooling tank, and blow-drying the roller in air; (4) placing the blow-dried roller into the low-temperature treatment tank, and impregnating the roller in ethanol; (5) taking out the roller from the low-temperature treatment tank, placing the roller into a water treatment tank, and quickly heating the roller; and (6) taking out the roller from the water treatment tank, and placing the roller into a tempering furnace for a tempering procedure. According to the roller cold-treatment process, the temperature of the roller entering the low-temperature treatment tank and the temperature of the roller subjected to low-temperature treatment are reduced and raised respectively in advance through the water treatment tank, so that the time required by the whole production process is effectively shortened, the production efficiency is improved, the using amount of the liquid carbon dioxide and the power consumption of the tempering furnace can also be reduced, and energy resources are saved.

Description

A kind of roll cold treatment process

Technical field

The present invention relates to a kind of roll cold treatment process.

Background technology

After roller quenching, air cooling to room temperature is carried out deepfreeze again, and air cooling to room temperature by the unusual 1-2 days that needs in season, the production cycle is long; In actual production, in order to catch up with production schedule, often at roll air cooling, to certain temperature, (a little higher than room temperature > just directly puts into-60 ℃ of deepfreeze groove deepfreezes, causes Liquid carbon dioxide waste.

Summary of the invention

For problems of the prior art, the object of the present invention is to provide a kind of technical scheme of roll cold treatment process.

Described a kind of roll cold treatment process, is characterized in that: each component of roll and weight percent are: C:0.85%-1.10%; Si:0.6%-1.0%; Mn:0.20%-0.8%; Cr:5.5%-7.5%; Mo:0.30%-0.8%; V:0.1%-0.3%; Ni≤0.4%; P≤0.020%; S≤0.015%; All the other are Fe and inevitable impurity; The cold treatment process of this roll comprises the steps: 1) roll after quenching puts into pending groove; 2) pending roll is put into water cooling tank, be immersed in water, keep 2-3 hour, liquid carbon dioxide is injected in subzero treatment groove simultaneously, and fully mix with the ethanol in subzero treatment groove, the temperature of subzero treatment groove is dropped to-70 ℃, the cold air of the needs decompression simultaneously producing in subzero treatment groove enters in water cooling tank, and the water in water cooling tank is lowered the temperature; 3) cooling roll later in water cooling tank is taken out, in air, dry up; 4) roll drying up is put into subzero treatment groove, be immersed in ethanol and keep 2-3 hour; 5) roll is taken out from subzero treatment groove, put into water treatment trough, roll is rapidly heated, and immerses 1-2 hour in water; 6) roll is taken out from water treatment trough, put into tempering stove, proceed to tempering process.

Described a kind of roll cold treatment process, is characterized in that described each component of roll and weight percent are: C:0.9%-1.05%; Si:0.7%-0.9%; Mn:0.40%-0.6%; Cr:6.0%-7.0%; Mo:0.40%-0.7%; V:0.15%-0.25%; Ni≤0.38%; P≤0.018%; S≤0.013%; All the other are Fe and inevitable impurity.

The present invention is entered the temperature of subzero treatment groove and is carried out pre-cooling and pre-intensification through the temperature of subzero treatment roll later by water treatment trough breaker roll, effectively shortened the needed time of whole production technique on the one hand, improved production efficiency, also can reduce on the other hand the consumption of liquid carbon dioxide and the power consumption of tempering stove, save the energy, reduced the waste of the energy.

Embodiment

Roll cold treatment process of the present invention, each component of roll and weight percent are: C:0.85%-1.10%; Si:0.6%-1.0%; Mn:0.20%-0.8%; Cr:5.5%-7.5%; Mo:0.30%-0.8%; V:0.1%-0.3%; Ni≤0.4%; P≤0.020%; S≤0.015%; All the other are Fe and inevitable impurity; The cold treatment process of this roll comprises the steps: 1) roll after quenching puts into pending groove; 2) pending roll is put into water cooling tank, be immersed in water, keep 2-3 hour, liquid carbon dioxide is injected in subzero treatment groove simultaneously, and fully mix with the ethanol in subzero treatment groove, the temperature of subzero treatment groove is dropped to-70 ℃, the cold air of the needs decompression simultaneously producing in subzero treatment groove enters in water cooling tank, and the water in water cooling tank is lowered the temperature; 3) cooling roll later in water cooling tank is taken out, in air, dry up; 4) roll drying up is put into subzero treatment groove, be immersed in ethanol and keep 2-3 hour; 5) roll is taken out from subzero treatment groove, put into water treatment trough, roll is rapidly heated, and immerses 1-2 hour in water; 6) roll is taken out from water treatment trough, put into tempering stove, proceed to tempering process.

As preferably, each component of roll and weight percent are: C:0.9%-1.05%; Si:0.7%-0.9%; Mn:0.40%-0.6%; Cr:6.0%-7.0%; Mo:0.40%-0.7%; V:0.15%-0.25%; Ni≤0.38%; P≤0.018%; S≤0.013%; All the other are Fe and inevitable impurity.

Claims

1. a roll cold treatment process, is characterized in that: each component of roll and weight percent are: C:0.85%-1.10%; Si:0.6%-1.0%; Mn:0.20%-0.8%; Cr:5.5%-7.5%; Mo:0.30%-0.8%; V:0.1%-0.3%; Ni≤0.4%; P≤0.020%; S≤0.015%; All the other are Fe and inevitable impurity; The cold treatment process of this roll comprises the steps: 1) roll after quenching puts into pending groove; 2) pending roll is put into water cooling tank, be immersed in water, keep 2-3 hour, liquid carbon dioxide is injected in subzero treatment groove simultaneously, and fully mix with the ethanol in subzero treatment groove, the temperature of subzero treatment groove is dropped to-70 ℃, the cold air of the needs decompression simultaneously producing in subzero treatment groove enters in water cooling tank, and the water in water cooling tank is lowered the temperature; 3) cooling roll later in water cooling tank is taken out, in air, dry up; 4) roll drying up is put into subzero treatment groove, be immersed in ethanol and keep 2-3 hour; 5) roll is taken out from subzero treatment groove, put into water treatment trough, roll is rapidly heated, and immerses 1-2 hour in water; 6) roll is taken out from water treatment trough, put into tempering stove, proceed to tempering process.

2. a kind of roll cold treatment process according to claim 1, is characterized in that described each component of roll and weight percent are: C:0.9%-1.05%; Si:0.7%-0.9%; Mn:0.40%-0.6%; Cr:6.0%-7.0%; Mo:0.40%-0.7%; V:0.15%-0.25%; Ni≤0.38%; P≤0.018%; S≤0.013%; All the other are Fe and inevitable impurity.