Editorial Technical Reference

Vacuum Induction Degassing Unit

This page explains how Vacuum Induction Degassing Unit is classified within Foundries. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Industrial machine for removing dissolved gases from molten metal using vacuum and induction stirring.

View Full Specifications Explore Manufacturing Sources
Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Vacuum Induction Degassing Unit

Definition
The Vacuum Induction Degassing Unit is a standalone industrial machine used in foundries to significantly improve the quality of cast metal components by removing hydrogen, oxygen, and nitrogen from molten alloys. It operates by placing a ladle of molten metal within a vacuum chamber and using electromagnetic induction to stir the melt, promoting gas evolution and removal. This process is critical for producing high-integrity castings for aerospace, automotive, and energy applications where porosity and inclusions must be minimized. The unit is essential for advanced melting and refining processes prior to casting.

The unit comprises a refractory-lined steel ladle, a water-cooled copper induction coil, and a stainless steel vacuum chamber. The vacuum pump system achieves an ultimate vacuum of 0.05 mbar and operates in a working vacuum range of 10–100 mbar. The ladle capacity ranges from 5 to 50 kg, and the induction coil operates at 50–500 Hz. The pumping speed is 1000–5000 m³/h, and a complete degassing cycle typically takes 20–40 minutes. The unit requires a cooling water flow of 20–60 m³/h and an electrical power of 200–800 kW. It operates on three-phase AC at 380–690 V (IEC 60038) and has an ingress protection rating of IP54–IP65 (IEC 60529). The machine weight ranges from 20 to 80 t, and the footprint is 50–150 m². The operating pressure range is 1.0–1.6 MPa, and the ambient operating temperature is 0–50 °C.

All values are reference ranges and must be verified with the legal manufacturer or supplier for the specific model and application. Standards listed are for procurement and verification reference only and do not imply certification or compliance of any specific product or supplier.
Working Principle
A ladle of molten metal is sealed within a vacuum chamber. A vacuum pump reduces the chamber pressure, lowering the solubility of gases in the melt. An induction coil around the ladle generates an electromagnetic field that stirs the molten metal, creating surface turbulence and exposing fresh melt to the vacuum, which facilitates the nucleation, growth, and removal of gas bubbles.
Common Materials
Refractory Lined Steel Ladle, Water-Cooled Copper Induction Coil, Stainless Steel Vacuum Chamber
Technical Parameters
ParameterTypical rangeNotes & selection driver
Ultimate VacuumRequired0.05 mbarMinimum pressure achievable in the vacuum chamber
Working VacuumRequired10–100 mbarStandard operating pressure range during degassing
Ladle CapacityRequired5–50 kgMaximum mass of molten metal the treatment ladle can hold
Induction Coil FrequencyRequired50–500 HzOperating frequency of the electromagnetic induction stirring system
Pumping SpeedRequired1000–5000 m³/hVolumetric flow rate of the vacuum pump system
Cycle Time20–40 minutesTypical time required for one complete degassing cycle
Operating Temperature0–50 °CAmbient temperature range for equipment operation.
Cooling Water Flow20–60 m³/hRequired for induction coil and vacuum pump cooling.
Electrical Power200–800 kWInstalled power for induction heating and vacuum pumps.
Voltage380–690 VThree-phase AC, 50/60 Hz.IEC 60038
Ingress ProtectionIP54–IP65Protection against dust and water jets.IEC 60529
Machine Weight20–80 tDepends on capacity and configuration.
Footprint50–150 m²Required floor space including auxiliary systems.

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
  • Vacuum Chamber
    Sealed enclosure that houses the treatment ladle and maintains a low-pressure environment
    Material: Stainless steel with water-cooled jacket
  • Treatment Ladle
    Refractory-lined vessel that contains the molten metal during the degassing process
    Material: Steel shell with alumina or magnesia refractory lining
  • Induction Stirring Coil
    Electromagnetic coil that generates a stirring force within the molten metal to promote gas removal
    Material: Water-cooled copper tubing
  • Vacuum Pumping System
    Assembly of pumps (e.g., roots, rotary vane) and valves used to evacuate the chamber
    Material: Various (steel, cast iron, elastomers)
  • Ladle Lift & Seal Mechanism
    Hydraulic or mechanical system for raising the ladle into the chamber and creating a vacuum seal
    Material: Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Vacuum Induction Degassing Unit.

Vacuum Degassing System Ladle Degasser Induction Stirring Degasser

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0.1-10 mbar vacuum range, atmospheric to 2 bar positive pressure
other spec: Metal throughput: 5-100 tons/hour, Induction power: 500-5000 kW, Degassing efficiency: 90-99% hydrogen removal
temperature: 1500-1800°C (typical for molten steel/alloys)
Media Compatibility
✓ Molten steel alloys ✓ Nickel-based superalloys ✓ Copper alloys
Unsuitable: Reactive metals in air (e.g., molten magnesium without protective atmosphere)
Sizing Data Required
  • Required metal throughput (tons/hour)
  • Target gas content reduction (e.g., hydrogen ppm to ppm)
  • Molten metal temperature and alloy composition

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Refractory lining degradation
Cause: Thermal cycling and chemical attack from molten metal alloys during vacuum degassing processes, leading to cracks, spalling, and eventual lining failure.
Vacuum system leakage
Cause: Seal degradation in vacuum pumps, valves, or vessel flanges due to high-temperature operation, particulate contamination, or improper maintenance, compromising degassing efficiency.
Maintenance Indicators
  • Abnormal increase in vacuum pump operating time or inability to reach target vacuum levels, indicating system leaks or pump inefficiency.
  • Visible refractory spalling or excessive heat radiation from the vessel exterior, suggesting lining deterioration and risk of catastrophic failure.
Engineering Tips
  • Implement a refractory thermal profiling program using infrared thermography to monitor lining condition and schedule preventive repairs before failure occurs.
  • Establish a rigorous leak-testing protocol for the vacuum system using helium mass spectrometry during scheduled downtimes to detect and address micro-leaks proactively.

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
Pressure Equipment Directive 2014/68/EU

Quoted from the published standard.

Manufacturing Precision
  • Vacuum Chamber Leak Rate: ≤ 1x10^-6 mbar·L/s
  • Crucible Temperature Uniformity: +/- 5°C
Quality Inspection
  • Helium leak test of the vacuum chamber
  • Induction coil insulation resistance test

Manufacturers of Vacuum Induction Degassing Unit

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.

Xi'an Brightway Energy Machinery Equipment Co., Ltd.
Shaanxi, CN
Founded 2012
API ISO CE IADC
Also makes: Mud Circulation System, Motor Control Center, Mud System and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry

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.

Frequently Asked Questions

What is the purpose of a vacuum induction degassing unit?

It removes dissolved gases such as hydrogen, oxygen, and nitrogen from molten metal to reduce porosity and inclusions in castings, improving the integrity of components for demanding applications.

How does the induction stirring work?

An induction coil generates an electromagnetic field that stirs the molten metal, creating turbulence and exposing fresh melt to the vacuum, which promotes gas bubble nucleation and removal.

What are the typical operating parameters?

Reference ranges include a working vacuum of 10–100 mbar, ladle capacity of 5–50 kg, induction frequency of 50–500 Hz, and cycle time of 20–40 minutes. Confirm exact values with the manufacturer.

What standards apply to this equipment?

Relevant standards include IEC 60038 for voltage, and IEC 60529 for ingress protection. These are verification references and do not imply certification.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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 Induction Degassing Unit

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 Induction Degassing Unit?

Compare manufacturer profiles with relevant product and process capability.

Create Manufacturer Profile Contact Us
Previous Product
Precision Casting Mold Ejector Pin
Last Product
Get QuotesChat