work roll

Scope of application: Metal cutting processing leveling (cross cutting, cutting, swing cutting, longitudinal cutting)

Material selection: GCr15, forged 9Cr2Mo.

Process requirements: 

1. Quenching and tempering treatment HB280-320.

2. The surface hardness of the roller is HRC62-65, and the depth of the hardened layer is 5-7mm.

3. Defects are not allowed in magnetic inspection.

4. The surface of the work roll is chrome plated, with a chrome layer thickness of 0.06-0.08.

5. In the same batch of work rolls, the allowable diameter error must be less than 0.015mm.

Advantages and Features

High strength and wear resistance

The work roll is made of high-quality alloy material, which has extremely high hardness and wear resistance, and can work stably for a long time under high load and high-speed operation conditions, reducing replacement frequency and lowering maintenance costs.

Precision machining and high precision

The work roll has undergone precision machining, with high surface smoothness and strict control of dimensional accuracy at the micrometer level, ensuring the uniformity and consistency of the processed products, making it particularly suitable for high-precision manufacturing.

High temperature resistance and corrosion resistance

In high temperature or corrosive environments, work rolls can maintain stable performance, are not easily deformed or damaged, and are suitable for harsh working conditions such as steel and chemical engineering.

versatility

The work roll can be customized according to different needs, such as surface coating, special heat treatment, etc., to meet various material and process requirements.

Energy-saving and environmental protection

Efficient work roll design can reduce energy consumption, lower carbon emissions during production, and align with the sustainable development concept of modern industry.

Application scenarios

steel industry

In the steel rolling production line, work rolls are used for hot rolling, cold rolling and other processes to process steel billets into plates, strips or profiles, which are widely used in fields such as automobiles, construction, and home appliances.

papermaking industry

In papermaking equipment, work rolls are used for processes such as calendering and coating to improve the smoothness, glossiness, and strength of paper.

Plastic Process

In plastic extrusion, rolling and other equipment, work rolls are used for molding, cooling and surface treatment to produce films, sheets and other products.

metal processing

In metal sheet processing, work rolls are used for embossing, polishing, drawing and other processes to improve the appearance quality and functionality of products.

Printing and Coating Industry

In printing and coating equipment, work rolls are used to evenly transfer ink or paint, ensuring consistency in printing and coating effects.

Instructions for Use

Installation and Debugging

Before installing the work roll, it is necessary to check for any damage or foreign objects on the surface of the roll body to ensure a clean installation environment.

Install according to the equipment manual, adjust the gap and pressure between the rollers to ensure smooth operation.

When using for the first time, a no-load test run is required to check for any abnormal vibration or noise.

operation and maintenance

During operation, regularly check the temperature, vibration, and surface condition of the work roll, and promptly clean any residue.

Avoid overloading operation to prevent deformation or damage to the roller body.

Regularly lubricate bearings and transmission components to ensure smooth operation of the equipment.

Cleaning and maintenance

After shutdown, promptly clean the residual materials on the surface of the work roll to prevent corrosion or scaling.

For work rolls with special coatings, specialized cleaning agents should be used to avoid damaging the surface coating.

When not in use for a long time, the work roll needs to be treated with rust prevention and stored in a dry environment.

Replacement and scrapping

When the surface of the work roll shows severe wear, cracks, or deformation, it should be replaced in a timely manner to avoid affecting product quality.

Scrapped work rolls should be disposed of in accordance with environmental protection requirements to avoid polluting the environment.

Common problems and solutions

Severe surface wear and tear

Reason: Insufficient material hardness or excessive operating load.

Solution: Choose work roll materials with higher hardness or adjust operating parameters to reduce load.

Roller deformation

Reason: High temperature or improper installation.

Solution: Optimize the cooling system to ensure that the temperature is controlled within a reasonable range; Reinstall and adjust the gap between the rollers.

Abnormal vibration or noise

Reason: Bearing damage or roller imbalance.

Solution: Replace the bearings or perform dynamic balance correction on the roller body.

Surface coating peeling off

Reason: Poor coating process or highly corrosive usage environment.

Solution: Choose higher quality coating materials or improve the usage environment.

Uneven surface of the product

Reason: The surface of the roller body is uneven or the pressure distribution is uneven.

Solution: Re grind the surface of the roller body or adjust the pressure distribution parameters.