Straightening Machine
Precision Leveling for Perfectly Flat Metal Products
Made in India
30+ Years
Product Overview
Metal coils inherently contain internal stresses and shape defects from the rolling and coiling processes. Our straightening machines, also known as levelers, use precisely arranged sets of work rolls to systematically remove these defects. The result is flat, stress-free material ready for fabrication processes that demand dimensional accuracy. Available in various configurations from light-gauge to heavy-gauge applications, our levelers deliver consistent flatness across the full material width.
Key Features & Capabilities
Multi-Roll Design
9 to 21 precision rolls for progressive stress relief and flattening
Adjustable Gaps
Fine roll gap adjustment for optimal flatness across material range
Heavy-Duty Frame
Rigid frame construction prevents deflection under load
Universal Compatibility
Process steel, stainless, aluminum, and copper effectively
Easy Maintenance
Quick-access design for roll cleaning and replacement
Integration Ready
Designed for seamless integration into processing lines
How Does a Straightening Machine Work?
A straightening machine (also called leveler or flattening machine) removes shape defects from metal strips and sheets using multiple precision work rolls. The material is bent alternately up and down through the roll set, progressively relieving internal stresses and achieving flatness. Proper leveling is essential for downstream fabrication quality.
Material Entry
The strip or sheet enters the straightener through pinch rolls that maintain proper tension and guide the material into the work roll section.
Initial Bending
Entry rolls apply the maximum bending, exceeding the material's yield point to begin stress relief. Roll gaps are set based on material properties.
Progressive Flattening
As material passes through successive rolls, bending intensity decreases. Each roll set further reduces internal stresses and shape defects.
Final Passes
Exit rolls apply light bending to finalize flatness. The material emerges flat and stress-free, ready for further processing or fabrication.
Backup Roll Support
Backup rolls support the work rolls to prevent deflection under load. This is critical for consistent flatness across the full material width.
Material Exit
The flattened material exits through delivery rolls and proceeds to subsequent operations (cutting, stacking, or further processing).
Types of Straightening Machines We Manufacture
Friend Engineering Works manufactures levelers and straighteners for various thickness ranges and flatness requirements. The roll count and diameter are selected based on your material specifications.
5-Roll Straightener
Best For: Basic coil set removal, simple correction
- Simple construction
- Basic flattening
- Low cost
- Suitable for light gauges
9-Roll Straightener
Best For: Medium gauge general leveling, CTL lines
- Good stress relief
- Reliable leveling
- Standard in CTL lines
- Versatile performance
Precision Leveler (17-21 Rolls)
Best For: High flatness requirements, critical applications
- Small diameter work rolls
- Excellent flatness
- Full stress relief
- Premium quality output
Heavy Plate Leveler
Best For: Heavy plates, structural applications
- Large diameter rolls
- High force capacity
- Robust construction
- Heavy gauge capability
Key Components of a Straightening Machine
Straightening machines combine precision roll assemblies with rigid frames to achieve consistent flatness. Quality components ensure reliable performance and long service life.
| Component | Function |
|---|---|
| Work Rolls | Multiple small-diameter rolls that contact the material and perform the actual bending/leveling action. |
| Backup Rolls | Larger rolls that support work rolls from behind, preventing deflection under load for consistent flatness. |
| Roll Gap Adjustment | Manual or motorized system to adjust spacing between upper and lower roll sets based on material. |
| Entry/Exit Pinch Rolls | Guide material into and out of the leveler while maintaining proper tension throughout. |
| Frame/Housing | Heavy-duty rigid structure that resists deflection. Gap frame or four-column designs used. |
| Drive System | Motor with gearbox drives the rolls. Universal joints connect individual rolls to the drive. |
| Cassette System (Optional) | Quick-change roll cassettes allow fast changeover between different material ranges. |
Friend Engineering Works Straightening Machine Advantages
Compare our leveler capabilities with industry standards for flatness and reliability.
| Feature | Friend Engineering | Industry Average |
|---|---|---|
| Thickness Range | 0.10mm - 20mm | 0.5mm - 10mm |
| Width Capacity | Up to 2500mm | 1600mm |
| Roll Configurations | 5 to 21 rolls | 5 to 11 rolls |
| Flatness Quality | Excellent (< 2mm/m) | Standard (3-5mm/m) |
| Frame Rigidity | Heavy-duty construction | Standard |
| Roll Gap Adjustment | Precision motorized | Manual |
| Service Support | 24/7 Pan-India | Limited |
Specifications
Our Straightening Machine is built to handle demanding industrial requirements. Custom specifications are available to match your exact processing needs.
| Material Width Capacity | Up to 2000mm |
| Thickness Range | 0.10mm - 20mm |
| Number of Work Rolls | 9 to 21 (Application Dependent) |
| Roll Diameter | Based on Material Thickness |
| Drive System | Electric Motor with Gearbox |
| Roll Gap Adjustment | Manual / Motorized |
| Frame Type | Heavy-Duty Welded Steel |
| Backup Rolls | Available for Heavy Gauges |
Your Benefits
Investing in our Straightening Machine delivers measurable improvements to your operations.
- Eliminate coil set and crossbow
- Remove internal material stresses
- Improve downstream processing
- Consistent flatness results
- Reduce part rejection rates
- Enhance finished product quality
Where Our Straightening Machine is Used
Trusted by industries across India for reliable coil processing solutions.
Why Choose Friend Engineering Works?
With over 30 years of experience manufacturing coil processing equipment, we deliver quality, reliability, and exceptional service.
30+ Years Experience
Three decades of expertise in designing and manufacturing industrial coil processing machinery.
Made in India
All equipment manufactured at our facility in Maharashtra with stringent quality controls.
Custom Solutions
Every machine tailored to your specific processing requirements and production needs.
After-Sales Support
Comprehensive installation, training, and maintenance support throughout equipment lifecycle.
Frequently Asked Questions
Find answers to common questions about Straightening Machine from Friend Engineering Works.
Explore Related Equipment
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Ready to Discuss Your Straightening Machine Requirements?
Our engineering team will help you select the right configuration for your specific processing needs. Get a detailed quote with specifications tailored to your requirements.