阅读说明：本技术 一种宽幅铝冷轧工作辊热处理工艺方法 (Heat treatment process method for wide aluminum cold-rolled working roll ) 是由 韩维国 梁建立 于 2021-05-27 设计创作，主要内容包括：本发明涉及轧辊制造技术领域,一种宽幅铝冷轧工作辊热处理工艺方法,包括：连续感应加热淬火,加热温度960～1050℃,轧辊移动出感应圈后采用连续喷水方式淬火冷却,淬火加热结束后,继续对轧辊进行喷水冷却；对上述处理后的轧辊进行深冷处理,深冷处理温度-120～180℃；对上述处理后的轧辊进行回火处理,低温去应力回火温度80～150℃,高温固化组织回火温度150～200℃；按上述顺序完成后,依据图纸要求加工至成品；本发明保证轧辊具备高硬度和高回火温度,满足板材的各性能参数,同时提升轧制效率。(The invention relates to the technical field of roller manufacturing, in particular to a heat treatment process method of a wide aluminum cold-rolled working roller, which comprises the following steps: carrying out continuous induction heating quenching at the heating temperature of 960-1050 ℃, carrying out quenching cooling in a continuous water spraying manner after the roller moves out of the induction coil, and continuously carrying out water spraying cooling on the roller after the quenching heating is finished; carrying out subzero treatment on the treated roller, wherein the subzero treatment temperature is-120-180 ℃; tempering the treated roller, wherein the low-temperature stress relief tempering temperature is 80-150 ℃, and the high-temperature solidification structure tempering temperature is 150-200 ℃; after the steps are finished according to the sequence, processing the blank into a finished product according to the requirements of the drawing; the invention ensures that the roller has high hardness and high tempering temperature, meets various performance parameters of the plate, and simultaneously improves the rolling efficiency.)

1. A heat treatment process method for a wide aluminum cold rolling working roll is characterized by comprising the following steps: the method comprises the following steps:

step 1, continuously carrying out induction heating quenching at the heating temperature of 960-1050 ℃, carrying out quenching cooling in a continuous water spraying manner after a roller moves out of an induction coil, and continuously carrying out water spraying cooling on the roller after quenching heating is finished;

step 2, carrying out subzero treatment on the roller treated in the step 1, wherein the subzero treatment temperature is-120-180 ℃;

step 3, tempering the roller treated in the step 2, wherein the low-temperature destressing tempering temperature is 80-150 ℃, and the high-temperature solidification structure tempering temperature is 150-200 ℃;

and 4, processing the product to a finished product according to the drawing requirements after the steps 1-3 are completed.

2. The heat treatment process method for the wide aluminum cold-rolled working roll according to claim 1, characterized in that: after the roller is quenched and deeply cooled, two tempering treatments are adopted, namely low-temperature tempering stress removal and high-temperature tempering solidification of the structure.

Technical Field

The invention relates to the technical field of roller manufacturing, in particular to a heat treatment process method for a wide aluminum cold-rolling working roller.

Background

The rolling temperature of the conventional aluminum plate strip is normal-temperature rolling, along with the development of the industry, the performance requirement of the aluminum plate is continuously improved, some special plates need to be rolled at super normal temperature, and the rolling temperature is increased to a higher temperature from the normal temperature. Along with the increase of the rolling temperature, the performance requirements of the plate are met, and a new rolling process is urgently needed to ensure the normal rolling of the aluminum plate.

Disclosure of Invention

Aiming at the problems, the invention adopts a heat treatment method for the wide aluminum cold rolling working roll, ensures that the rolling roll has high hardness and high tempering temperature, meets various performance parameters of the plate, and simultaneously improves the rolling efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

a heat treatment process method for a wide aluminum cold rolling working roll is characterized by comprising the following steps: the method comprises the following steps:

step 1, continuously carrying out induction heating quenching at the heating temperature of 960-1050 ℃, carrying out quenching cooling in a continuous water spraying manner after a roller moves out of an induction coil, and continuously carrying out water spraying cooling on the roller after quenching heating is finished;

step 2, carrying out subzero treatment on the roller treated in the step 1, wherein the subzero treatment temperature is-120-180 ℃;

step 3, tempering the roller treated in the step 2, wherein the low-temperature destressing tempering temperature is 80-150 ℃, and the high-temperature solidification structure tempering temperature is 150-200 ℃;

and 4, processing the product to a finished product according to the drawing requirements after the steps 1-3 are completed.

The technical scheme of the invention is further improved as follows: after the roller is quenched and deeply cooled, two tempering treatments are adopted, namely low-temperature tempering stress removal and high-temperature tempering solidification of the structure.

Compared with the prior art, the heat treatment process method for the wide aluminum cold-rolled working roll has the following beneficial effects:

1. the invention provides a heat treatment process method of a wide aluminum cold-rolled working roll, which is used for tempering a roll body to obtain a product with a deeper hardening layer depth and a smaller hardness gradient, and the product has higher hardness, more stable structure and better service performance.

2. The invention provides a heat treatment process method of a wide aluminum cold rolling working roll, a tempered product can obtain a stable structure state with high hardness and low stress on a roll body, the applicable rolling temperature of the roll is greatly improved, and the accident resistance of the roll is stronger.

3. The invention provides a heat treatment process method of a wide aluminum cold-rolled working roll, wherein two times of tempering are used for replacing one time of tempering, so that the stability of the roll is improved, and the combination of high-temperature tempering and low-temperature tempering ensures high hardness and high structure stability.

Detailed Description

The technical solution of the present invention will be clearly and completely described by the following detailed description. It should be apparent that the described embodiments are only a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The working roll of the heat treatment process has the following requirements:

and (3) specification of the roller:single weight: 6.1 ton, the hardness requirement of the roller body is as follows: HSD 94-98.

Roller material: the alloy forged steel is prepared by adopting electric furnace smelting, ladle refining and electroslag remelting, and a steel ingot is heated and forged into a roll forging stock according to the process requirements.

The heat treatment method comprises the following final heat treatment steps:

A. continuous induction hardening: heating to 970 ℃, quenching and cooling the roller in a continuous water spraying mode after the roller moves out of the induction coil, and continuously spraying water to cool the roller after quenching and heating are finished;

B. cryogenic treatment: b, performing cryogenic treatment on the roller treated in the step A, wherein the cryogenic treatment temperature is-120 ℃;

C. tempering treatment: b, tempering the roller treated in the step B, wherein the low-temperature destressing tempering temperature is 120 ℃, and the high-temperature solidification structure tempering temperature is 160 ℃;

D. and after the A-C is finished, processing the blank into a finished product according to the requirements of the drawing.

Example 2

The working roll of the heat treatment process has the following requirements:

and (3) specification of the roller: phi 500/460 × 3000 × 5400, singlet: 6.1 ton, the hardness requirement of the roller body is as follows: HSD 94-98.

Roller material: the alloy forged steel is prepared by adopting electric furnace smelting, ladle refining and electroslag remelting, and a steel ingot is heated and forged into a roll forging stock according to the process requirements.

The heat treatment method comprises the following final heat treatment steps:

A. continuous induction hardening: heating at 1010 ℃, quenching and cooling the roller in a continuous water spraying mode after the roller moves out of the induction coil, and continuously spraying water for cooling the roller after quenching and heating are finished;

B. cryogenic treatment: b, performing cryogenic treatment on the roller treated in the step A, wherein the cryogenic treatment temperature is-120 ℃;

C. tempering treatment: b, tempering the roller treated in the step B, wherein the low-temperature destressing tempering temperature is 120 ℃, and the high-temperature solidification structure tempering temperature is 160 ℃;

D. and after the A-C is finished, processing the blank into a finished product according to the requirements of the drawing.

Example 3

The working roll of the heat treatment process has the following requirements:

and (3) specification of the roller:single weight: 6.1 ton, the hardness requirement of the roller body is as follows: HSD 94-98.

Roller material: the alloy forged steel is prepared by adopting electric furnace smelting, ladle refining and electroslag remelting, and a steel ingot is heated and forged into a roll forging stock according to the process requirements.

The heat treatment method comprises the following final heat treatment steps:

A. continuous induction hardening: heating at 1010 ℃, quenching and cooling the roller in a continuous water spraying mode after the roller moves out of the induction coil, and continuously spraying water for cooling the roller after quenching and heating are finished;

B. cryogenic treatment: b, performing cryogenic treatment on the roller treated in the step A, wherein the cryogenic treatment temperature is-150 ℃;

C. tempering treatment: b, tempering the roller treated in the step B, wherein the low-temperature destressing tempering temperature is 120 ℃, and the high-temperature solidification structure tempering temperature is 160 ℃;

D. and after the A-C is finished, processing the blank into a finished product according to the requirements of the drawing.

Example 4

The working roll of the heat treatment process has the following requirements:

and (3) specification of the roller:single weight: 6.1 ton, the hardness requirement of the roller body is as follows: HSD 94-98.

Roller material: the alloy forged steel is prepared by adopting electric furnace smelting, ladle refining and electroslag remelting, and a steel ingot is heated and forged into a roll forging stock according to the process requirements.

The heat treatment method comprises the following final heat treatment steps:

A. continuous induction hardening: heating at 1010 ℃, quenching and cooling the roller in a continuous water spraying mode after the roller moves out of the induction coil, and continuously spraying water for cooling the roller after quenching and heating are finished;

B. cryogenic treatment: b, performing cryogenic treatment on the roller treated in the step A, wherein the cryogenic treatment temperature is-120 ℃;

C. tempering treatment: b, tempering the roller treated in the step B, wherein the low-temperature destressing tempering temperature is 140 ℃, and the high-temperature solidification structure tempering temperature is 160 ℃;

D. and after the A-C is finished, processing the blank into a finished product according to the requirements of the drawing.

Example 5

The working roll of the heat treatment process has the following requirements:

and (3) specification of the roller: phi 500/460 × 3000 × 5400, singlet: 6.1 ton, the hardness requirement of the roller body is as follows: HSD 94-98.

Roller material: the alloy forged steel is prepared by adopting electric furnace smelting, ladle refining and electroslag remelting, and a steel ingot is heated and forged into a roll forging stock according to the process requirements.

The heat treatment method comprises the following final heat treatment steps:

A. continuous induction hardening: heating at 1010 ℃, quenching and cooling the roller in a continuous water spraying mode after the roller moves out of the induction coil, and continuously spraying water for cooling the roller after quenching and heating are finished;

B. cryogenic treatment: b, performing cryogenic treatment on the roller treated in the step A, wherein the cryogenic treatment temperature is-120 ℃;

C. tempering treatment: b, tempering the roller treated in the step B, wherein the low-temperature destressing tempering temperature is 120 ℃, and the high-temperature solidification structure tempering temperature is 170 ℃;

D. and after the A-C is finished, processing the blank into a finished product according to the requirements of the drawing.

Control test

The present examples 1-5 differ from conventional rolling (control) in step C of the above example, where the rolling was once tempered at a tempering temperature of 160 ℃.

To illustrate the advantages of the present invention, the hardness and residual stress were measured after the final quenching and tempering of the products of examples 1 to 5 and the control test. The results of the measurements are shown in the following table:

from the table, it can be seen that the tempering hardness of the steel prepared in the embodiments 1 to 5 is higher than that after one-time tempering, and the residual stress is lower; namely, high-low temperature combined tempering treatment is adopted, and the roller can obtain high hardness when being tempered at higher temperature.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the appended claims.