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4hi Cold rolling mill

Suitable for carbon steel, stainless steel, special steel and other strip rolling

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  • 4hi cold rolling mill -Uses and features

1. Suitable for carbon steel, stainless steel, special steel and other strip rolling
2. It is divided into work roll and back up roll driving mode. Electric press down and AGC hydraulic press down control modes.

3. The work roll bending device can be configured to quickly adjust the crown of the rolls, change the contact pressure distribution between the rolls, and achieve the purpose of controlling the shape of plate.

4. The machine structure is simple, convenient maintenance and operation, less investment.

5. AGC 4hi rolling mill has high control precision, especially suitable for high precision wide band and thin strip rolling.

  • Technological process

Decoiler with trolley → Front recoiler → Mill front device → 4hi rolling mill → Mill back device → Back recoiler

  • Technological parameter

Model

450 4hi

Roll dimension

φ175
φ450x450

φ140
φ450x450

Billet thickness

2.0-3.

1.0-2.0

Product thickness

0.3-1.0

0.2-0.6

Strip width

250-350

250-350

Driving type

Working roll

Back-up roll

Rolling force

3000

3000

Press down

Electric

Hydraulic

Electric

Hydraulic

Rolling speed(m/s)

1-3

4-6

1.5-4

4-8

Model

500 4hi

Roll dimension

φ175
φ500x500

φ140
φ500x500

Billet thickness

2.0-3.0

1.0-2.0

Product thickness

0.3-1.0

0.2-0.6

Strip width

300-400

300-400

Driving type

Working roll

Back-up roll

Rolling force

4000

4000

Press down

Electric

Hydraulic

Electric

Hydraulic

Rolling speed(m/s)

1-3

4-6

1.5-4

4-8

Model

550 4hi

Roll dimension

φ180
φ520x550

φ140
φ520x550

Billet thickness

2.0-3.0

1.0-2.0

Product thickness

0.3-1.0

0.2-0.6

Strip width

360-450

360-450

Driving type

Working roll

Back-up roll

Rolling force

5000

5000

Press down

Electric

Hydraulic

Electric

Hydraulic

Rolling speed(m/s)

1-3

4-6

1.5-4

4-8

Model

650 4hi

Roll dimension

φ200
φ600x650

φ165
φ600x650

Billet thickness

2.0-4.0

1.0-2.5

Product thickness

0.3-1.5

0.2-0.6

Strip width

450-580

450-580

Driving type

Working roll

Back-up roll

Rolling force

6000

6000

Press down

Electric

Hydraulic

Electric

Hydraulic

Rolling speed(m/s)

1-3

4-6

1.5-4

4-8

Model

750 4hi

Roll dimension

φ220
φ650x750

φ175
φ650x750

Billet thickness

2.0-4.0

1.5-3.0

Product thickness

2.0-4.0

1.5-3.0

Strip width

550-680

550-680

Driving type

Working roll

Back-up roll

Rolling force

7000

7000

Press down

Electric

Hydraulic

Electric

Hydraulic

Rolling speed(m/s)

1-3

4-6

1.5-4

4-8

Model

900 4hi

Roll dimension

φ230
φ750x900

φ180
φ750x900

Billet thickness

2.0-2.75

1.0-2.75

Product thickness

2.0-2.75

1.0-2.75

Strip width

600-800

600-800

Driving type

Working roll

Back-up roll

Rolling force

8000

8000

Press down

Electric

Hydraulic

Electric

Hydraulic

Rolling speed(m/s)

1-3

4-6

1.5-4

4-8

Cooperation Process

Requirement Communication and Understanding
01

We engage in in-depth requirement communication with clients to understand their specific needs, project scope, requirements, and expectations. During this stage, we establish effective communication channels to ensure mutual understanding of the project.

Solution Design and Provision
02

Based on the client's needs and requirements, we provide customized solutions and product design proposals. Our technical team offers professional advice and solution designs to ensure feasibility and optimization of the proposed solutions.

Cooperation Negotiation and Contract Signing
03

After confirming the solution design and product specifications, we negotiate cooperation terms with clients, discussing key terms such as cooperation mode, pricing, and delivery time in detail. Once mutual agreement is reached, we sign the formal contract, outlining rights and obligations of both parties.

Production and Quality Control
04

We commence production according to the contract and design requirements. Throughout the production process, we strictly adhere to quality management systems, conducting comprehensive quality control and supervision to ensure products meet client requirements and standards.

Delivery and Service Support
05

Upon completion of production, we package, transport, and deliver the products to clients on time. We provide user manuals and technical support to ensure clients can use the products correctly.

After-sales Service and Maintenance
06

We commit to providing comprehensive after-sales service and maintenance support, including technical support, training services, and maintenance. We aim to establish long-term and stable cooperation with clients, offering continuous support and service to ensure long-term stable operation of the products.

Feedback and Continuous Improvement
07

We value client feedback and opinions, regularly communicating with clients to understand their user experience and changing needs.

Switch to learn more about the cooperation process

After-sales Service

Multilingual Online Technical Support

Regular Remote Monitoring and Inspection

International Logistics and Spare Parts Services

Regular Maintenance and Servicing

Customer Satisfaction Surveys and Improvement

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