Outer Skin: Weight Range 2.5-8.5 kg/m², Flatness ≤0.5mm/m²

Component Specifications

Definition

The outer skin is a precision-formed sheet metal component that serves as the primary external surface of a door panel in industrial machinery. It functions as both a protective barrier against environmental factors and a structural element that contributes to the overall rigidity of the door assembly. This component is typically manufactured through processes like stamping, bending, and welding to achieve precise dimensional tolerances and surface quality requirements.

Working Principle

The outer skin operates on the principle of distributed load bearing and environmental protection. It transfers external forces across its surface area to the underlying door frame structure while preventing ingress of dust, moisture, and contaminants. The component maintains dimensional stability through its geometric design and material properties, ensuring consistent performance throughout the door's operational lifecycle.

Materials

Cold-rolled steel (CRS) SPCC-SD, thickness 1.2-2.0mm, zinc-coated for corrosion resistance. Alternative materials include aluminum alloy 5052-H32 (1.5-2.5mm) or stainless steel SUS304 (1.0-1.5mm) for specialized applications.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flatness	≤0.5mm/m²
Weight Range	2.5-8.5 kg/m²
Surface Roughness	Ra ≤ 1.6μm
Thickness Tolerance	±0.1mm
Corrosion Resistance	Salt spray test ≥ 500 hours
Dimensional Accuracy	±0.3mm

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 2768-1, DIN 6930, ISO 9227

Parent Products

This component is used in the following industrial products

Door Panel

A door panel is the main body component of an insulated chamber door, forming the barrier that seals the chamber opening.

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Insulated Panels

Prefabricated building panels with thermal insulation properties used as wall and roof elements in tunnel housing structures.

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Engineering Analysis

Risks & Mitigation

Corrosion in humid environments
Dimensional deformation under load
Surface damage during handling
Paint adhesion failure
Galvanic corrosion with dissimilar metals

FMEA Triads

Trigger: Inadequate corrosion protection coating
Failure: Premature rust formation reducing structural integrity
Mitigation: Implement proper surface preparation, use multi-layer coating systems, and conduct regular salt spray testing

Trigger: Improper forming process parameters
Failure: Springback causing dimensional inaccuracies
Mitigation: Optimize bending angles with overbend compensation, use precision tooling, and implement in-process measurement

Trigger: Material handling damage
Failure: Surface scratches and dents affecting appearance and protection
Mitigation: Use protective packaging, implement automated handling systems, and establish proper storage protocols

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 2768-1 medium class, flatness ≤0.5mm, perpendicularity ≤0.3mm/100mm

Test Method

Dimensional verification using CMM, surface quality inspection per ISO 8501, corrosion testing per ISO 9227 salt spray

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Outer Skin

Manufacturer profiles associated with Outer Skin.

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Related Components

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.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Seal Groove

Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

Frequently Asked Questions

What are the primary functions of an outer skin in industrial door panels?

The outer skin provides structural support, environmental protection, aesthetic finish, and contributes to the overall rigidity and durability of the door assembly.

How does material selection affect outer skin performance?

Material choice determines corrosion resistance, weight, formability, and cost. Steel offers strength and cost-effectiveness, aluminum provides lightweight corrosion resistance, while stainless steel offers superior durability in harsh environments.

What manufacturing processes are used for outer skin production?

Common processes include laser cutting, CNC punching, press brake bending, spot welding, and powder coating or anodizing for surface finishing.

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.

Outer Skin