Tension Leveller With Two Bending and Two Levelling Stages for Galvanizing Lines
This leveller uses two bending stages followed by two levelling stages, so residual deformation is first distributed evenly and then corrected. It runs on galvanizing lines producing carbon steel sheet for rail transit, automotive and new energy applications.
- Two bending and two levelling stages
- Two tension rolls at inlet and outlet
- Tension amplified by the roll group
- Used in galvanizing lines for carbon steel
Key Benefits
Why the four stage sequence works.
Deformation Distributed Then Corrected
Alternating deformation in the first stage spreads residual deformation evenly, and the second stage corrects it fully.
Stable Tension Through The Machine
Inlet and outlet tension rolls stabilise tension and reduce fluctuation, and the roll group amplifies it through the levelling section.
Shape And Properties Improved Together
The sequence improves the strip shape and its mechanical properties for downstream forming.
Where It Is Used
Products and sectors.
- Galvanizing lines for carbon steel
- Rail transit sheet production
- Automotive body, door and roof components
- New energy sector sheet material
Who It Is For
- Galvanizing line operators
- Producers supplying rail transit and automotive sheet
- New energy component material suppliers
- Plants upgrading a levelling section
Problems It Solves
- Bilateral, unilateral, middle and two rib wave
- Warping and buckling in coated sheet
- Latent shape defects revealed after cutting
- Formability problems in downstream pressing
Technical Features
Machine arrangement.
Two Bending Stages
Two rows of bending components apply the alternating deformation that distributes residual stress.
Two Levelling Stages
Levelling roll units complete the correction so the outgoing flatness is stable.
Balancing Rollers
Balancing rollers work with the bending components to keep the correction even across the width.
Specifications
Scope and configuration are agreed per project.
| Configuration | Two bending stages plus two levelling stages |
|---|---|
| Tension Rolls | 2 sets, inlet and outlet |
| Application | Galvanizing line, carbon steel strip |
| Defects Removed | Bilateral wave, unilateral wave, middle wave, two rib wave, warping, buckling |
| Sectors Served | Rail transit, automotive, new energy, iron and steel manufacturing |
| Outcome | Improved strip shape and mechanical properties |
Materials
- Welded and machined frame
- Alloy steel bending and levelling rolls
- Tension drive and hydraulic package
Manufacturing Process
Line Study
Strip programme, line speed and flatness target define the roll configuration.
Frame Production
Frames are welded, stress relieved and machined.
Roll Manufacture
Bending, levelling and balancing rolls are produced and ground together.
Assembly And Test
Roll parallelism, tension control and drive alignment are verified.
Quality Control
- Frame machining inspection
- Roll hardness and geometry records
- Tension and hydraulic testing
- Assembly alignment report
Customization Options
- Width and thickness range for your line
- Bending and levelling stage configuration
- Drive and automation interface
- Integration into an existing galvanizing line
Use Guide
- Set bending and levelling stages from the incoming shape measurement
- Check balancing roller settings after product changes
- Record settings for each grade and gauge
- Regrind rolls before surface condition affects the coating
How It Compares
Against simpler levelling arrangements.
| Single bending stage machines | Two bending stages distribute residual deformation before correction, which holds flatness after cutting. |
|---|---|
| Roller levelling without tension | Tension plus bending changes the internal stress state rather than only the visible shape. |
| Correcting shape at the mill | A dedicated leveller handles what rolling leaves behind at a cost the mill cannot match. |
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Read MoreTension Leveller With Two Bending and Two Levelling Stages FAQ
What does two bending and two levelling mean?
Two rows of bending components apply alternating deformation to distribute residual deformation, then levelling roll units correct it fully in two further stages.
Which sectors is it used for?
Iron and steel manufacturing, rail transit, automotive and new energy sheet production on galvanizing lines.
Which defects does it remove?
Bilateral wave, unilateral wave, middle wave, two rib wave, warping, buckling and latent poor plate shape.
Can it be installed in an existing galvanizing line?
Yes. Send the line layout, available length, speed and tension data.
Do you supply the roll spares?
Yes, the complete roll set is produced here and matches the original drawing.
What do you need to quote?
Strip width and thickness range, steel grade, line speed, incoming and target flatness.
Specify A Four Stage Leveller
Send your galvanizing line data and our engineers come back with a leveller configuration.