LG40-H High-Speed ​​Hole Type

Product Overview

High-speed grooved roll dies are engineered for continuous cold-rolled tube production where high forming speed, dimensional accuracy, and stable die performance are essential. The optimized groove geometry helps guide metal flow during rolling while maintaining control over tube dimensions.

Designed for demanding production conditions, these roll dies combine wear resistance, strength, and fatigue resistance to support high-speed and high-load tube forming. Their precision design can also help reduce unnecessary material loss and minimize surface defects during production.

Optimized for High-Speed Tube Rolling

High-speed cold rolling places greater demands on forming dies. The roll groove needs to maintain its designed geometry while handling repeated contact, mechanical loads, and elevated operating temperatures.

These high-speed pass roll dies are developed specifically for this type of production environment. Their optimized structure supports continuous rolling operations while helping manufacturers maintain consistent tube quality at higher production speeds.

Precision Groove Profile for Accurate Tube Dimensions

The groove profile plays an important role in controlling how metal moves through the rolling process. A precisely engineered groove helps distribute the material more evenly and supports dimensional control of both the inner and outer surfaces of the finished tube.

The dies are specified for:

• Inner diameter precision of ±0.02 mm

• Outer diameter precision of ±0.05 mm

• Nominal tube diameters from 20 mm to 450 mm

• Customized die dimensions according to production requirements

This makes the roll dies suitable for applications where tight dimensional tolerances are required.

Wear and Fatigue Resistance

Cold rolling involves repeated forming cycles and continuous mechanical contact between the workpiece and the tooling. To accommodate these conditions, the dies can be manufactured from high-alloy steel, wear-resistant steel, or tool steel.

Surface treatments such as chrome plating, nitriding, and hardening can be applied to improve the working characteristics of the die surface. The specified surface hardness is 58–62 HRC, supporting stable performance during repeated tube-forming operations.

Stable Performance Under Elevated Temperatures

The dies are designed for operating conditions of approximately 200°C to 350°C. Their material selection and structural design are intended to maintain stable performance during high-temperature, heavy-load production.

An internal cooling system is also available to help manage heat generated during continuous rolling operations and support consistent forming conditions.

Improved Production Efficiency

The combination of high-speed pass design and precision groove geometry helps optimize the tube-forming process. By controlling metal flow more effectively, the dies can support faster production while reducing unnecessary material waste.

For manufacturers operating high-volume cold rolling lines, this can contribute to more consistent output and improved utilization of production equipment.

Technical Specifications

Compatible with Different Metal Tube Applications

The high-speed grooved roll dies can be used for forming various metal tubes, including steel, stainless steel, alloy, and copper pipes.

Typical applications include:

• Oil and natural gas pipeline production

• Automotive tube manufacturing

• Aerospace component production

• Power industry pipelines

• Chemical industry pipelines

• Construction-related tube production

• High-volume precision cold-rolled tube manufacturing

Their application range makes them suitable for production lines serving both general industrial requirements and high-precision tube manufacturing.

Built for Precision Cold-Rolled Tube Production

For manufacturers focused on high-speed and high-precision tube forming, tooling performance directly influences production consistency and finished tube quality. These high-speed grooved roll dies combine customized dimensions, precision groove geometry, high surface hardness, and multiple surface treatment options to address the requirements of continuous cold rolling.

With support for tube diameters from 20 mm to 450 mm, internal cooling, and a specified service life of up to 150,000 forming cycles, the dies provide a configurable tooling solution for modern cold-rolled tube production lines.