Editorial Technical Reference

Vacuum Pumping System

This page explains how Vacuum Pumping System is classified within Basic Metal Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A system that creates and maintains the required vacuum level within a Vacuum Induction Degassing Unit by removing gases and vapors from the chamber.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Vacuum Pumping System

Definition
The Vacuum Pumping System is a critical component of a Vacuum Induction Degassing (VID) Unit. Its primary function is to evacuate the sealed degassing chamber to achieve and sustain the low-pressure (vacuum) environment necessary for the metallurgical process. This system removes atmospheric gases (like nitrogen and oxygen), process-generated gases (like hydrogen and carbon monoxide), and vapors to facilitate the removal of dissolved gases and impurities from molten metal, thereby improving its quality and properties.

The system typically employs a multi-stage pumping arrangement. A primary pump (often a roots blower or a similar roughing pump) initially reduces the pressure from atmospheric to a medium vacuum range. Subsequently, one or more high-vacuum pumps (such as diffusion pumps, turbomolecular pumps, or cryogenic pumps) are engaged to achieve the final, very low pressure required for efficient degassing. The system operates by mechanically or kinetically transferring gas molecules from the chamber volume to the exhaust.

Key parameters for selection and verification include pumping speed (1000–6000 m³/h at inlet flange), ultimate pressure (0.05–0.5 Pa), operating pressure range (10–1000 Pa), and leak rate (≤1×10⁻⁶ Pa·m³/s). The system requires a three-phase supply (380–690 V AC, 50–60 Hz) and cooling water flow of 1.5–6 m³/h at 5–35 °C. Ambient temperature range is 5–40 °C, and noise level is 70–85 dB(A) at 1 m. Total weight ranges from 500 to 3000 kg, with dimensions from 2000×1500×1800 mm to 4000×2500×3000 mm. Materials used include stainless steel, aluminum alloy, and specialty elastomers for seals.

Standards referenced include ISO 21360 for vacuum performance and IEC 60038 for voltage/frequency. These are procurement references; actual compliance must be confirmed with the manufacturer. Always verify model-specific values and standards with the legal manufacturer or supplier before purchase or integration.
Working Principle
The system uses a multi-stage pumping arrangement. A primary pump (e.g., roots blower) reduces pressure from atmospheric to medium vacuum. Then high-vacuum pumps (diffusion, turbomolecular, or cryogenic) achieve the final low pressure. Gas molecules are transferred from the chamber to exhaust via mechanical or kinetic action.
Common Materials
Stainless Steel, Aluminum Alloy, Specialty Elastomers (for seals)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Pumping Speed1000–6000 m³/hEffective pumping speed at inlet flangeISO 21360
Ultimate Pressure0.05–0.5 PaLowest achievable pressure without gas loadISO 21360
Operating Pressure Range10–1000 PaTypical degassing pressure range
Leak Rate≤1×10⁻⁶ Pa·m³/sMaximum allowable leak rate of systemISO 21360
Motor Power15–90 kWTotal installed power of vacuum pumps
Voltage380–690 V ACThree-phase supply, 50/60 HzIEC 60038
Frequency50–60 HzMains frequencyIEC 60038
Cooling Water Flow1.5–6 m³/hRequired for pump cooling
Cooling Water Temperature5–35 °CInlet temperature range
Ambient Temperature5–40 °COperating environmentIEC 60721-3-3
Noise Level70–85 dB(A)At 1 m distanceISO 11203
Weight500–3000 kgTotal system weight
Dimensions (L×W×H)2000×1500×1800–4000×2500×3000 mmFootprint and height

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

Components / BOM
  • Primary (Roughing) Pump
    Initial evacuation of the chamber from atmospheric pressure to a medium vacuum range.
    Material: Cast Iron / Steel
  • High-Vacuum Pump
    Achieves the final, very low pressure required for the degassing process after the primary pump has done its work.
    Material: Stainless Steel / Aluminum
  • Vacuum Valves
    Isolate the pumps from the chamber or from each other, and control the gas flow path.
    Material: Stainless Steel / Brass
  • Vacuum Gauges
    Measure and monitor the pressure inside the chamber and at various stages of the pumping system.
    Material: Stainless Steel / Glass
  • Interconnecting Piping Part
    Provides the conduit for gas flow between the chamber, pumps, and valves.
    Material: Stainless Steel

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Ultimate vacuum: 1e-3 to 1e-6 mbar, Operating range: 1000 mbar to 1e-3 mbar
flow rate: 10 to 10,000 m³/h (depending on pump configuration)
temperature: Ambient to 150°C (typical), up to 200°C with special seals
slurry concentration: Not applicable - designed for gas/vapor removal only
Media Compatibility
✓ Inert gases (Argon, Nitrogen) ✓ Metallic vapors (Al, Mg, Zn) ✓ Hydrocarbon vapors (degassing byproducts)
Unsuitable: Corrosive halogen gases (e.g., Chlorine, Fluorine) without specialized corrosion-resistant materials
Sizing Data Required
  • Required ultimate vacuum level (mbar)
  • Gas load/evolution rate (kg/h or m³/h at STP)
  • Chamber volume and required evacuation time

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Oil Contamination and Degradation
Cause: Ingress of process gases, moisture, or particulates leading to oil breakdown, increased viscosity, and loss of lubricating properties, often due to inadequate filtration, poor sealing, or improper oil selection for the application.
Mechanical Seal Failure
Cause: Excessive heat generation, abrasive wear from particulates, or improper installation leading to seal face damage, resulting in vacuum loss and oil leakage into the process or atmosphere.
Maintenance Indicators
  • Audible: Unusual knocking, grinding, or high-pitched whining noises from the pump head, indicating bearing wear, cavitation, or mechanical interference.
  • Visual/Observable: Significant and rapid drop in ultimate vacuum pressure or inability to reach target vacuum levels, accompanied by visible oil leaks, discolored or foaming oil in the sight glass, or excessive pump vibration.
Engineering Tips
  • Implement a rigorous oil management program: Use high-quality, manufacturer-recommended vacuum pump oil; install and maintain proper inlet and exhaust filters to prevent contaminant ingress; regularly monitor oil condition (color, clarity, viscosity) and change oil based on operating hours or condition-based triggers, not just time intervals.
  • Ensure proper pump cooling and temperature control: Maintain cooling water flow (if water-cooled) or clean cooling fins (if air-cooled) to prevent overheating, which accelerates oil degradation and seal failure. For oil-sealed pumps, maintain oil temperature within the specified range (typically 60-80°C) using heaters or coolers as needed to prevent moisture condensation and ensure optimal viscosity.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 21360-1:2019 Vacuum technology - Standard methods for measuring vacuum-pump performance ANSI/AVS 8.1-2013 Recommended Practices for the Calibration and Use of Vacuum Gauges DIN 28400 Vacuum technology; terms and definitions

Quoted from the published standard.

Manufacturing Precision
  • Bearing clearance: +/-0.005mm
  • Sealing surface flatness: 0.02mm
Quality Inspection
  • Helium leak test (vacuum integrity)
  • Vibration analysis (rotational balance)

Manufacturers of Vacuum Pumping System

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

FUOOTECH Oil Purifier
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources

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

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.

Supply Chain Compatible Machinery & Devices

Vacuum Induction Melting Furnace

Industrial furnace for melting metals under vacuum using electromagnetic induction

Explore Specs →
Electroslag Remelting Furnace

An industrial furnace used in basic metal manufacturing for secondary refining of alloys through the electroslag remelting (ESR) process.

Explore Specs →
Molten Metal Temperature Measurement System

Automated system for continuous temperature monitoring of molten metals during processing.

Explore Specs →
Molten Metal Degassing System

The Molten Metal Degassing System is an industrial system used in basic metal manufacturing to remove dissolved hydrogen, oxygen, and nitrogen from molten aluminum, steel, and other non-ferrous metals.

Explore Specs →

Frequently Asked Questions

What is the typical pumping speed range for this system?

The effective pumping speed at the inlet flange is typically 1000–6000 m³/h, as per ISO 21360. Confirm the exact value for your model with the manufacturer.

What standards apply to the vacuum performance?

ISO 21360 is referenced for pumping speed, ultimate pressure, and leak rate. IEC 60038 is referenced for voltage and frequency. These are verification references, not proof of compliance.

What are the required utility connections?

The system needs a three-phase electrical supply of 380–690 V AC, 50–60 Hz, and cooling water flow of 1.5–6 m³/h at 5–35 °C. Ambient temperature should be 5–40 °C.

How do I verify the system's leak rate?

The maximum allowable leak rate is ≤1×10⁻⁶ Pa·m³/s per ISO 21360. Verification should be performed by the manufacturer or qualified personnel using appropriate leak detection methods.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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.
Buyer enquiry

Request manufacturing insight for Vacuum Pumping System

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes
Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here
We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman
CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim
A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

Your business information is used only to process this request.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at contact@cnfx.com.

Need to Manufacture Vacuum Pumping System?

Compare manufacturer profiles with relevant product and process capability.

Previous Product
Work Rolls
Last Product
Get QuotesChat