Structured Manufacturing Data (2026)

Straightener / Leveler

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Straightener / Leveler used in the Fabricated Metal Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Straightener / Leveler is characterized by the integration of Upper Roll Bank and Lower Roll Bank. In industrial production environments, manufacturers listed on CNFX commonly emphasize High-carbon chromium steel (for work rolls) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical device that removes coil set, crossbow, and edge wave from metal strip to produce flat, straight material for downstream processing.

Product Specifications

Technical details and manufacturing context for Straightener / Leveler

Definition
Within a Coil Feeding System, the straightener/leveler is a critical component positioned after the decoiler and before the feeder. Its primary function is to correct the inherent curvature and irregularities (coil set) imparted to metal strip during the coiling process, ensuring the material entering the press or forming equipment is perfectly flat and dimensionally stable. This prevents defects in stamped, punched, or formed parts and ensures consistent feeding accuracy.
Working Principle
The machine typically consists of a series of small-diameter work rolls arranged in an offset pattern (often staggered between upper and lower banks). As the metal strip passes through these rolls, it is subjected to alternating bending stresses beyond its yield point. This plastic deformation permanently removes the memory of the coil curvature. The number of rolls, their diameter, and the adjustment of intermesh pressure determine the leveling intensity and the final flatness achieved.
Common Materials
High-carbon chromium steel (for work rolls), Alloy steel (for frame and housings)
Technical Parameters
  • Maximum material thickness and width capacity (e.g., 3.2mm x 1600mm) (mm) Standard Spec
Components / BOM
  • Upper Roll Bank
    Houses the upper set of work rolls. Often mounted in a movable carriage for pressure adjustment.
    Material: Alloy steel
  • Lower Roll Bank
    Houses the fixed lower set of work rolls, forming the base bending plane.
    Material: Alloy steel
  • Work Rolls
    The precision-ground rollers that directly contact and bend the material. They are the primary wear parts.
    Material: High-carbon chromium steel (hardened and ground)
  • Pressure Adjustment Mechanism
    Allows precise setting of the intermesh gap and bending pressure between the upper and lower roll banks, typically via motorized or manual screws.
    Material: Alloy steel
  • Entry/Exit Guides Part
    Ensure the strip enters and exits the roll banks squarely to prevent edge damage and misalignment.
    Material: Tool steel or hardened alloy steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Straightener / Leveler.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (mechanical operation, not pressure-based)
line speed: Up to 300 m/min (984 ft/min) for standard models
temperature: Ambient to 150°C (302°F) for standard models, up to 400°C (752°F) for high-temperature variants
strip tension: 5-50 kN (1124-11240 lbf) depending on model
strip thickness range: 0.2-6.0 mm (0.008-0.236 in)
Media Compatibility
✓ Cold rolled steel strip ✓ Aluminum coil stock ✓ Stainless steel sheet
Unsuitable: Extremely brittle materials (e.g., cast iron, hardened tool steel) due to risk of fracture during straightening
Sizing Data Required
  • Strip width (mm/in)
  • Material yield strength (MPa/ksi)
  • Required flatness tolerance (I-units or mm/m)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Roller bearing fatigue
Cause: Cyclic loading from material thickness variations and misalignment, leading to spalling and eventual seizure
Hydraulic cylinder seal degradation
Cause: Contamination from metal particles and thermal cycling causing hardening and leakage
Maintenance Indicators
  • Audible grinding or knocking during operation indicating bearing failure
  • Visible material waviness or inconsistent flatness in output product
Engineering Tips
  • Implement precision laser alignment of all rollers during installation and after major maintenance
  • Establish proactive oil analysis program for hydraulic systems with particle counting and moisture monitoring

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems CE Marking - Machinery Directive 2006/42/EC ASTM A370 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
Manufacturing Precision
  • Roll Alignment: +/- 0.05mm per meter
  • Surface Flatness: 0.1mm/m² after leveling
Quality Inspection
  • Dimensional Verification with Laser Tracker
  • Non-Destructive Testing (Magnetic Particle Inspection)

Factories Producing Straightener / Leveler

Manufacturer profiles with relevant production capability in China

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What types of metal defects does this straightener/leveler correct?

This machine effectively removes coil set (longitudinal curvature), crossbow (transverse curvature), and edge wave from metal strip to produce consistently flat material for downstream processing in metal fabrication.

What materials are used in the construction of this straightener/leveler?

The work rolls are made from high-carbon chromium steel for durability and precision, while the frame and housings are constructed from alloy steel to provide structural strength and stability during operation.

How does the pressure adjustment mechanism work in this leveling system?

The pressure adjustment mechanism allows operators to precisely control the force applied by the upper and lower roll banks, enabling customization for different metal thicknesses, materials, and flatness requirements.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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