Design & Construction

Drive system: Electro‑mechanical main drive with helical gearbox and VFD speed control ensures stable torque, smooth acceleration, and constant surface speed under load for a clean, skid‑free pass.
Roll cassette: Configurable 5, 7, 9, or 11 work‑roll banks with entry/exit pinch rolls use alloy‑steel, induction‑hardened and precision‑ground rolls, with optional chrome finishing for delicate or coated stock.
Backup support: Multi‑row backup bearings limit roll deflection on thicker or work‑hardened scrap, maintaining uniform correction across the strip width and preventing center sag that can induce edge waves.
Adjustment: Motorized top‑roll bank with digital position read‑outs uses wedge/jack or screw actuators, including left‑right independent crown compensation for precise, recipe‑driven penetration.
Frame: Stress‑relieved, heavy‑plate welded structure with deep cross‑members minimizes vibration to stabilize leveling forces and roll engagement over long duty cycles.
Controls: Operator panel or PLC/HMI provides speed setpoints, roll penetration set/recipe, load/current display, jog/auto, and fully interlocked E‑stops to streamline setup and ensure safety.

What Makes Our Design Unique?

Precision penetration control: Encoder‑guided roll gap with crown compensation achieves true flatness by yielding the correct surface bands through thickness, minimizing residual stress across mixed gauges.
Surface protection: Fine‑finish, hardened rolls with optional chrome reduce print‑through on painted or coated scrap when paired with optimized penetration per material yield.
High rigidity: Reinforced frame and backup bearings resist roll bending so correction is uniform across width, improving downstream cutting and forming quality.
Low maintenance: Electro‑mechanical actuation, centralized lubrication, and sealed bearings are specified for dusty yards to extend service intervals and reduce total cost of ownership.

Key Features & Accessories

Performance‑driven productivity

VFD: Wide speed range with VFD covers thin to thick gauges; soft start and anti‑skid synchronization with pinch rolls maintain traction and surface quality.
Recipe memory: Save penetration, speed, and crown profiles to accelerate changeovers and preserve flatness consistency across material families.
Quality tools: Entry edge guides, exit leveling gauges, and inline flatness checks support repeatable results by verifying shape after springback.
Safety: Two‑hand jog, emergency rope along the strip path, interlocked guards, and overload/current protection reduce operational risk without slowing throughput.

Optional Accessories

Line integration: Add decoiler, loop control, servo feeder, flying or guillotine shear, and stacking table to create a cut‑to‑length line tailored to material mix and takt time.
Quick‑change cassette: Removable work‑roll cartridge shortens maintenance windows and enables fast roll‑set swaps for different thickness windows.
Roll finishes: Super‑finish/chrome rolls and polyurethane‑covered pinch rolls protect sensitive coatings and reduce cosmetic rework.
Automatic flatness control: Laser or roller feedback trims penetration dynamically to counter coil set and cross‑bow variation across and along the strip.

Control & Handling Options

Swiveling pendant: with speed knob, penetration jog, crown left/right, forward/reverse, load display, and E‑stop; PLC/HMI enables recipes, alarms, and diagnostics.
Guided setup: On‑machine charts map thickness and yield strength to recommended penetration and speed, aligning with best‑practice leveling principles for shape defects.
Training provided: Commissioning, operator SOPs for variable scrap input, and maintenance best practices are supported by Monotech’s manufacturing and service capability.

Why choose Monotech’s electro mechanical straightening machine?

Consistent flatness: Encoder‑controlled penetration and rigid backup deliver low residual bow and edge wave across mixed scrap streams.

Gentle on surfaces: Hardened, fine‑finish rolls and optional chrome limit print‑through on coated or rust‑treated sheets.

Efficient operation: Recipe recall, low‑maintenance electro‑mechanical actuators, and VFD drives reduce energy and changeover losses per ton.

Tailored solutions: Widths, roll finishes, quick‑change cassettes, and full line integration align with throughput targets and product mix.

Component Excellence

Work rolls: High‑grade alloy steel, precision‑ground and induction‑hardened, sized and spaced for the target thickness range to deliver controlled elongation and flatness.

Gear train: Helical gearbox with high service factor and low backlash provides smooth feed and steady surface speed under fluctuating load.

Bearings & seals: Heavy‑duty bearings with labyrinth protection and centralized lube ports increase reliability in abrasive environments.

Electricals: IE3/IE4 motors, VFD drives, and industrial‑grade controls with clear labeling support energy efficiency, traceability, and fast troubleshooting.

Documentation: Supplied with inspection tags, flatness test report, alignment record, and O&M manual for compliance and quality assurance records.

Frequently asked questions (FAQs)

What materials can be straightened?
Mild steel, stainless, aluminum, and low‑alloy sheets within rated thickness/width windows; entry shape and hardness influence required penetration and number of passes.
How is flatness verified?
With exit straight‑edge or roller gauges, and optionally laser sensors; target specs can be set and monitored via HMI for go/no‑go guidance.
Will it mark the surface?
Hardened, polished rolls and optional chrome with optimized penetration minimize cosmetic marking; correct roll pressure and wrap control are essential.
What power is required?
Drive power is sized to strip width, thickness, yield strength, and line speed; VFD control enables soft start and improved energy efficiency.
Can it integrate with an existing line?
Yes—standard interfaces support decoiler, feeder, shear, stacker, and loop control for seamless coil‑to‑blank workflows.
What after‑sales support is offered?
Installation assistance, operator training, AMCs, remote diagnostics, and spares are available through Monotech’s manufacturing and sales channels.