Flying Shear Technology for Continuous Steel Rolling Lines
A flying shear cuts the head and tail of moving strip at production speed, so the line never decelerates for a crop. That removes the main throughput penalty in continuous rolling and cuts the material wasted at each end.
- No line deceleration or shutdown for a cut
- Head and tail cropping at full speed
- Controlled cut length and cross section quality
- Waste per cut reduced against static shearing
Key Benefits
Three reasons plants fit one.
Output Without Stop Start
The production line does not need to decelerate or stop, which significantly increases output on a continuous rolling line.
Cut Length Under Control
Cutting length and cross sectional quality are strictly controlled rather than left to mechanical stops.
Less Material Wasted
The amount of scrap generated at each cut is reduced, which shows up directly in yield.
Where It Is Used
Where it is installed.
- Continuous steel rolling production lines
- Head and tail cropping on moving strip
- Horizontal cutting operations in line
- Modernisation of lines limited by static shears
Who It Is For
- Rolling mills with throughput limited by shearing
- Plants where crop yield is a cost issue
- Line builders specifying cutting equipment
- Project teams upgrading an older cutting section
Problems It Solves
- Line stoppage at every head and tail cut
- Yield loss from oversized crops
- Dimensional variation on cut ends
- Downtime caused by cutting bottlenecks
Technical Features
Performance points.
Full Production Speed Cutting
The unit is engineered to perform cutting operations at full production speed rather than at a reduced pass speed.
Precise Length Control
Length and cross section quality are controlled so cut ends meet dimensional accuracy requirements.
Continuous Operation Design
Mechanics and drive are specified for uninterrupted manufacturing rather than intermittent cutting.
Specifications
Capacity is configured to the line. Reference operating data is listed below.
| Cutting Mode | On the fly, no deceleration or shutdown |
|---|---|
| Application | Head and tail cutting of moving metal strip |
| Line Speed Reference | Suited to lines running up to around 300 m/min |
| Minimum Thickness Reference | From around 0.5 mm |
| Cut Quality | Controlled length and cross section |
| Integration | Continuous steel rolling production lines |
Materials
- Welded and stress relieved frame
- Alloy steel shear mechanism
- Servo drive and control package
Manufacturing Process
Line Data Collection
Material, gauge, width, line speed and crop requirements are gathered first.
Mechanical Manufacture
Frame and shear mechanism are produced and machined to the design.
Drive And Control Integration
Drive and motion control are configured to the line signals.
Run Test
The unit is tested for cut accuracy and synchronisation before delivery.
Quality Control
- Frame machining inspection
- Shear mechanism clearance check
- Drive synchronisation verification
- Cut length repeatability record
Customization Options
- Strip range and cut length to your line
- Blade material for the product mix
- Control interface to your automation
- Scrap discharge arrangement
Use Guide
- Set crop length from the actual head and tail condition, not a fixed value
- Inspect blade edges at planned intervals
- Check the length measuring signal when accuracy drifts
- Keep the scrap path clear to avoid jams at speed
How It Compares
Flying shear against static cutting.
| Static shear with line stop | No deceleration or shutdown is needed, which lifts output on a continuous line. |
|---|---|
| Manual crop control | Cut length is controlled by the system, so crops are consistent and waste is reduced. |
| Offline cropping | Cutting happens in line, removing the handling and storage step between operations. |
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Flying Shear for Continuous Rolling Lines FAQ
Does the line have to slow down for a cut?
No. The flying shear performs cutting at full production speed without deceleration or shutdown.
What does it cut?
Head and tail sections of moving metal strips, plus horizontal cutting operations in line.
How accurate is the cut length?
Cutting length and cross sectional quality are strictly controlled by the drive and control system, giving consistent dimensional accuracy.
How much material do we save?
Scrap generated at each cut is reduced compared to static shearing. The exact saving depends on your current crop practice.
Can it be added to an existing line?
Yes, subject to space and control interface. Send the line layout, speed and product range and we check feasibility.
What information do you need?
Material and gauge range, line speed, required crop lengths and your control system.
Remove The Cutting Bottleneck
Send your line speed and product range and our engineers propose a flying shear configuration.