Folding Plates: Load Capacity 50-500 tons, Width 500-3000 mm

Component Specifications

Definition

Folding plates are critical components in industrial folding mechanisms, typically made from hardened steel or alloy, designed to apply precise pressure and create accurate bends in sheet metal, plastic, or composite materials. They consist of a stationary lower plate and a movable upper plate that work in tandem to fold materials along predetermined lines with minimal deformation.

Working Principle

Folding plates operate on the principle of controlled plastic deformation. The material is positioned between the upper and lower plates, and hydraulic or mechanical force is applied to the upper plate, causing the material to bend around the edge of the lower plate. The angle and radius of the bend are determined by the plate geometry, applied force, and material properties.

Materials

High-carbon steel (AISI 1045, 1060), tool steel (D2, A2), alloy steel (4140, 4340), hardened to 45-60 HRC; sometimes coated with titanium nitride or chromium for wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	500-3000 mm
Length	1000-6000 mm
Hardness	45-60 HRC
Load Capacity	50-500 tons
Surface Finish	Ra 0.4-1.6 μm
Thickness Range	1-20 mm
Bending Accuracy	±0.1°

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9013, DIN 8586, ISO 2768

Parent Products

This component is used in the following industrial products

Folding Mechanism

A mechanical assembly that precisely folds dough layers during the lamination process.

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Engineering Analysis

Risks & Mitigation

Material springback
Plate wear and deformation
Misalignment causing inaccurate bends
Overloading leading to plate failure

FMEA Triads

Trigger: Improper material hardness or fatigue
Failure: Plate cracking or permanent deformation
Mitigation: Use certified materials, implement regular hardness testing, and follow load capacity guidelines

Trigger: Inadequate lubrication or contamination
Failure: Increased friction and premature wear
Mitigation: Establish regular cleaning and lubrication schedules, use protective covers when not in operation

Trigger: Operator error in material positioning
Failure: Inaccurate bends or material damage
Mitigation: Implement training programs, use positioning guides and sensors, and establish quality check procedures

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm for plate dimensions, ±0.1° for angular accuracy

Test Method

Coordinate measuring machine (CMM) verification, hardness testing (Rockwell scale), load testing per ISO 9013

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Folding Plates

Manufacturer profiles associated with Folding Plates.

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Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Frequently Asked Questions

What materials are folding plates typically made from?

Folding plates are commonly manufactured from high-carbon steel, tool steel, or alloy steel, hardened to 45-60 HRC for durability and wear resistance.

How do folding plates achieve precise bending angles?

Precise bending is achieved through accurate plate geometry, controlled hydraulic or mechanical force application, and proper material positioning between the upper and lower plates.

What maintenance do folding plates require?

Regular inspection for wear, cleaning to remove debris, lubrication of moving parts, and periodic calibration to maintain bending accuracy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Folding Plates