CN105112638A - Cold treatment method for roller - Google Patents

Abstract

The invention discloses a cold treatment method for a roller. The roller comprises, by weight, 0.9%-1.0% of C, 0.8%-0.9% of Si, 0.5%-0.6% of Mn, 6.5%-7.0% of Cr, 0.6%-0.8% of Mo, 0.2% of V, 0.2%-0.35% of Ni, 0.015% of P, 0.010% of S and the balance Fe and impurities. According to the cold treatment method, the production cycle is shortened, production efficiency is improved, and meanwhile production cost is reduced.

Description

A kind of roll cold treatment method

Technical field

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

Background technology

After roller quenching, air cooling processes to room temperature 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, often just directly putting into the deepfreeze of deepfreeze groove at roll air cooling to certain temperature for driving plan, causing production cost to improve.

Summary of the invention

The object of this invention is to provide a kind of roll cold treatment method.

The technical solution used in the present invention is:

A kind of roll cold treatment method, roll weight percentages is: C:0.9%-1.0%, Si:0.8%-0.9%, Mn:0.5%-0.6%, Cr:6.5%-7.0%, Mo:0.6%-0.8%, V:0.2%, Ni:0.2%-0.35%, P:0.015%, S:0.010% all the other be Fe and impurity;

Cold treatment method is as follows:

1) roll after quenching is put into water cooling tank, to water cooling tank cooling, temperature reduces to-75 degree;

2) roll in water cooling tank is taken out, dries up, then put into ethanol immersion 2 hours;

3) roll taking-up is put into water cooling tank 2.5 hours;

4) by roll tempering.

The invention has the beneficial effects as follows: present method shortens the production cycle, improve production efficiency, again save production cost simultaneously.

Embodiment

Embodiment 1:

A kind of roll cold treatment method, roll weight percentages is: C:0.9%, Si:0.8%, Mn:0.5%, Cr:6.5%, Mo:0.6%, V:0.2%, Ni:0.2%, P:0.015%, S:0.010% all the other be Fe and impurity;

Cold treatment method is as follows:

1) roll after quenching is put into water cooling tank, to water cooling tank cooling, temperature reduces to-75 degree;

2) roll in water cooling tank is taken out, dries up, then put into ethanol immersion 2 hours;

3) roll taking-up is put into water cooling tank 2.5 hours;

4) by roll tempering.

Embodiment 2:

A kind of roll cold treatment method, roll weight percentages is: C:1.0%, Si:0.9%, Mn:0.6%, Cr:7.0%, Mo:0.8%, V:0.2%, Ni:0.35%, P:0.015%, S:0.010% all the other be Fe and impurity;

Cold treatment method is as follows:

1) roll after quenching is put into water cooling tank, to water cooling tank cooling, temperature reduces to-75 degree;

2) roll in water cooling tank is taken out, dries up, then put into ethanol immersion 2 hours;

3) roll taking-up is put into water cooling tank 2.5 hours;

4) by roll tempering.

Embodiment 3:

A kind of roll cold treatment method, roll weight percentages is: C:0.95%, Si:0.85%, Mn:0.55%, Cr:6.5%, Mo:0.7%, V:0.2%, Ni:0.25%, P:0.015%, S:0.010% all the other be Fe and impurity;

Cold treatment method is as follows:

1) roll after quenching is put into water cooling tank, to water cooling tank cooling, temperature reduces to-75 degree;

2) roll in water cooling tank is taken out, dries up, then put into ethanol immersion 2 hours;

3) roll taking-up is put into water cooling tank 2.5 hours;

4) by roll tempering.

Above embodiments of the present invention are described, but the invention is not restricted to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, can also make a variety of changes under the prerequisite not departing from present inventive concept.

Claims (1)

1. a roll cold treatment method, is characterized in that: roll weight percentages is: C:0.9%-1.0%, Si:0.8%-0.9%, Mn:0.5%-0.6%; Cr:6.5%-7.0%, Mo:0.6%-0.8%, V:0.2%; Ni:0.2%-0.35%, P:0.015%, S:0.010% all the other be Fe and impurity;

Cold treatment method is as follows:

1) roll after quenching is put into water cooling tank, to water cooling tank cooling, temperature reduces to-75 degree;

2) roll in water cooling tank is taken out, dries up, then put into ethanol immersion 2 hours;

3) roll taking-up is put into water cooling tank 2.5 hours;

4) by roll tempering.