INDUSTRY COMPONENT

Main Shell

Main structural shell of vacuum chamber body providing containment and structural integrity for vacuum processes.

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Component Specifications

Definition
The Main Shell is the primary structural component of a vacuum chamber body, designed to maintain ultra-low pressure environments by providing hermetic sealing and structural support. It withstands atmospheric pressure differentials while housing internal components and maintaining vacuum integrity through precision engineering and material selection.
Working Principle
Operates by creating a sealed containment volume that maintains vacuum through structural rigidity and leak-tight design. The shell withstands external atmospheric pressure (approximately 101.3 kPa) while maintaining internal pressures as low as 10^-6 Pa or lower, withstanding pressure differentials through optimized geometry and material strength.
Materials
Stainless Steel 304L/316L (ASTM A240), Aluminum 6061-T6 (ASTM B209), or Nickel Alloys (Inconel 625) depending on application requirements. Surface finish: Ra ≤ 0.8 μm for vacuum integrity. Thickness: 6-25 mm based on chamber diameter and pressure requirements.
Technical Parameters
  • Leak Rate < 1×10^-9 mbar·L/s
  • Pressure Rating Full vacuum to 10^-9 mbar
  • Surface Roughness Ra ≤ 0.8 μm
  • Temperature Range -196°C to +450°C
  • Flatness Tolerance ≤ 0.1 mm/m
  • Port Configurations CF, KF, ISO flanges
Standards
ISO 2861, ISO 1609, DIN 28400, ASME BPVC Section VIII

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Main Shell.

vacuum chamber main shell vacuum chamber body structural shell vacuum containment stainless steel vacuum chamber industrial vacuum components vacuum engineering Main Shell Main Shell in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Vacuum Chamber Body

The main structural enclosure of a vacuum chamber designed to maintain a controlled low-pressure environment.

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Engineering Analysis

Risks & Mitigation
  • Vacuum leaks compromising process integrity
  • Structural failure under pressure differential
  • Material outgassing contaminating vacuum
  • Thermal stress cracking during temperature cycles
  • Corrosion in process environments
FMEA Triads
Trigger: Improper welding or machining defects
Failure: Vacuum leaks exceeding allowable rates
Mitigation: Implement helium leak testing, proper weld procedures, and surface finish controls
Trigger: Material selection mismatch with process environment
Failure: Corrosion or contamination of vacuum
Mitigation: Material compatibility analysis and proper surface treatments
Trigger: Inadequate structural design for pressure differentials
Failure: Shell deformation or catastrophic failure
Mitigation: Finite element analysis (FEA) and compliance with pressure vessel standards

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Dimensional tolerances per ISO 2768-m, flatness ≤ 0.1 mm/m, circularity ≤ 0.05% of diameter
Test Method
Helium mass spectrometry leak testing per ISO 1608, pressure testing per ASME BPVC, surface roughness measurement per ISO 4287

Buyer Feedback

★★★★☆ 4.6 / 5.0 (28 reviews)

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Main Shell meets all ISO standards."

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Main Shell arrived with full certification."

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Frequently Asked Questions

What materials are best for vacuum chamber main shells?

Stainless steel 304L/316L is standard for most applications due to excellent vacuum properties, corrosion resistance, and weldability. Aluminum is used for lightweight applications, while nickel alloys are preferred for high-temperature or corrosive environments.

How is leak-tightness ensured in main shells?

Through precision machining (Ra ≤ 0.8 μm surface finish), proper welding techniques (TIG welding with back purging), helium leak testing (< 1×10^-9 mbar·L/s), and standardized flange connections (CF, KF, ISO) with appropriate gasket materials.

What standards govern vacuum chamber shell design?

ISO 2861 (vacuum flange connections), ISO 1609 (vacuum technology vocabulary), DIN 28400 (vacuum technology), and ASME BPVC Section VIII for pressure vessel requirements in some applications.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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