INDUSTRY COMPONENT

Flange/Rim

A flange/rim is a protruding rim or edge on a machine hood's capture inlet, designed to provide secure attachment, alignment, and sealing between the hood and connected ductwork or equipment.

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Component Specifications

Definition
The flange/rim is a critical structural component integrated into the hood's capture inlet, typically featuring bolt holes or a continuous rim to facilitate a rigid, airtight connection with mating flanges on ventilation ducts, filters, or other process equipment. It ensures proper mechanical alignment, prevents air leakage, and maintains the integrity of the capture system under operational stresses such as vibration, pressure differentials, and thermal expansion.
Working Principle
The flange/rim operates on the principle of mechanical fastening and gasket compression. When bolted to a mating flange, it creates a compressive force that deforms a gasket material (e.g., rubber, silicone) placed between the surfaces, forming a seal that prevents air or contaminant leakage. Its rim geometry ensures precise alignment, distributing loads evenly to maintain structural stability and prevent misalignment during machine operation.
Materials
Common materials include: Carbon steel (e.g., ASTM A36) for general applications; Stainless steel (e.g., AISI 304/316) for corrosion resistance in harsh environments; Aluminum alloys (e.g., 6061-T6) for lightweight needs; or engineered plastics (e.g., PVC, polypropylene) for chemical resistance. Material selection depends on factors like temperature, corrosion exposure, and load requirements.
Technical Parameters
  • Diameter Varies by hood size (e.g., 200-1000 mm)
  • Thickness 3-12 mm depending on material and pressure rating
  • Surface Finish Smooth machined or coated (e.g., galvanized, powder-coated) to enhance sealing
  • Pressure Rating Up to 150 psi for standard industrial applications
  • Bolt Hole Quantity 4, 8, or 12 holes typical
  • Bolt Circle Diameter Standardized per flange class (e.g., ANSI/ASME B16.5)
Standards
ISO 7005-1, DIN 2501, ANSI/ASME B16.5, EN 1092-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Flange/Rim.

flange rim hood capture inlet industrial flange ventilation flange mechanical connection sealing flange DIN flange ISO flange machine hood component Flange/Rim Flange/Rim in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Hood (Capture Inlet)

The intake opening of an extraction hood/arm designed to capture and contain airborne contaminants at their source.

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Engineering Analysis

Risks & Mitigation
  • Improper installation leading to air leakage and reduced capture efficiency
  • Material corrosion in aggressive environments causing failure
  • Misalignment during assembly resulting in seal damage or structural stress
FMEA Triads
Trigger: Incorrect bolt torque or uneven tightening
Failure: Gasket compression failure, leading to air leaks and system inefficiency
Mitigation: Use calibrated torque wrenches and follow a star-pattern tightening sequence; implement regular inspection protocols.
Trigger: Exposure to corrosive chemicals or moisture
Failure: Material degradation (e.g., rust, pitting), compromising structural integrity and seal
Mitigation: Select corrosion-resistant materials (e.g., stainless steel); apply protective coatings; conduct routine maintenance checks.
Trigger: Vibration or thermal cycling from machine operation
Failure: Bolt loosening or flange distortion, causing misalignment and leaks
Mitigation: Use lock washers or thread-locking compounds; design with allowance for thermal expansion; schedule vibration analysis.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Dimensional tolerances per ISO 2768-m for general machining; flatness tolerance typically within 0.1 mm per 100 mm to ensure proper gasket sealing
Test Method
Pressure testing (e.g., hydrostatic or pneumatic) to verify leak-tightness; visual inspection for surface defects; dimensional checks using calipers or CMMs

Buyer Feedback

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Frequently Asked Questions

What is the primary function of a flange/rim on a hood capture inlet?

It provides a secure, aligned, and sealed connection between the hood and ductwork, preventing air leaks and ensuring efficient contaminant capture.

How do I select the right material for a flange/rim?

Consider operational environment: use carbon steel for general use, stainless steel for corrosion resistance, aluminum for lightweight applications, or plastics for chemical exposure.

What standards apply to industrial flanges/rims?

Common standards include ISO 7005-1, DIN 2501, and ANSI/ASME B16.5, which define dimensions, pressure ratings, and materials.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Flange/Connection Flanges