Tension Leveler Working Rolls Product Overview

Our working rolls are the core components of precision leveling lines and tension straightening machines for metal strip processing. As the key matching parts that directly contact and level the strip, working rolls determine the surface finish, flatness precision, and continuous production efficiency of finished metal plate and strip products.

Designed to support functional rolls and intermediate rolls under high-load operation, our working rolls effectively restrain roll deflection, bending, and structural deformation caused by long-term tension processing—preventing defective products and output reduction caused by roll deformation.

1. Key Features

Our working rolls deliver ultra-high surface hardness with uniform hardness distribution, a deep integral hardened layer on the roll body, and an optimized roll neck and roll barrel for structural strength and impact toughness, giving them outstanding wear resistance, anti-peeling performance, and strong anti-overload capability for high-speed, large-scale, high-precision leveling while ensuring long-term stable operation of production lines.

In addition, our working rolls are used with professional roll bending technology to optimize strip leveling quality through positive and negative bending adjustment modes; by precisely regulating the bending force, this technology accurately controls the thickness uniformity and overall flatness of metal strips, effectively eliminates surface defects, and improves the finished product qualification rate.

2.Technical Parameters

Parameter	Specification
Surface quenching hardness	HRC 63 ~ 65
Quenched hardening layer depth	3 ~ 5 mm
Surface treatment	Hard chrome plating
Chrome plating thickness	0.03 – 0.05 mm
Material	High-quality carbon steel and stainless steel

3.Applications

Our working rolls are widely used in metal processing and steel rolling industries, including:

Automotive industry: body and chassis parts
Home appliance industry: metal shell accessories for refrigerators and washing machines
Construction industry: various section steel and steel plate materials
Galvanizing linesand AHSS (Advanced High-Strength Steel) processing lines

4.Why Choose Our Working Rolls?

In industrial rolling and leveling systems, high-performance working rolls occupy a pivotal position. Their mechanical stability and processing quality directly dominate the final quality standard and production capacity of metal strip products—an irreplaceable key link in metal processing production.

Our working rolls adopt standardized high-standard manufacturing processes with excellent comprehensive mechanical properties, perfectly adapting to the operating demands of high-speed, large-scale, and high-precision metal straightening equipment.

FAQ – Working Rolls

1.What is a work roll?
A work roll is the roll that directly contacts the metal strip to apply rolling or levelling force, improving flatness, thickness, and surface quality.

2.What equipment uses Working Rolls?
Working Rolls are used in tension levellers, rolling mills, pickling, galvanising, tinning, and cuttolength lines.

3.What materials are Working Rolls made of?
Common materials: forged alloy steel (9Cr2Mo, 2%Cr, 3%Cr, 5%Cr), highchrome steel, tool steel, highspeed steel, and tungsten carbide composites.

4.How do I choose the right work roll diameter?
Diameter depends on strip thickness/width, material strength, and equipment type. Levellers use small diameters (9–200 mm) for bending; mills use larger diameters (150–700 mm) for rigidity.

5.How does strip material strength affect selection?
Higherstrength materials (e.g. stainless steel up to 1200 MPa) require harder roll materials and sometimes smaller diameters to achieve the same reduction.

6.What is the difference between work, intermediate, and backup rolls?
Work roll – directly contacts the strip; intermediate roll – transmits force and helps shape control; backup roll – supports to prevent deflection, larger and softer.

7.What work roll configurations are used in tension levellers?
Tension levellers can have 2, 4, 5, or 7 work roll modules, usually housed in quickchange cassettes. Roll intermesh is a key setting.

8.What surface finishes and coatings are available?
Finishes: Ra 0.05–1.2 μm depending on application. Coatings: hard chrome (standard), tungsten carbide, or ceramic for wear and corrosion resistance.

9.What is a roll cassette and how does it relate to Working Rolls?

A roll cassette is an integrated assembly containing Working Rolls, backup rolls, bearings, and channels. It allows offline preassembly and rapid online exchange, minimising downtime.

10.Can you custommake Working Rolls for my specific equipment?
Yes. We need: equipment type/model, roll dimensions, material grade, coating type, surface finish, and strip data. Process: provide drawings/requirements → evaluation → quotation → manufacturing → inspection → delivery.