---
title: "Vacuum Induction Degassing Unit"
industry: "Foundries"
verification_protocol:
  urn: "URN:CNFX:ME:VACUUM_INDUCTION_DEGASSING_UNIT"
  data_integrity_hash: "07937597d5ac5881a994578b5d16bb76"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:VACUUM_INDUCTION_DEGASSING_UNIT"
  data_source_uri: "https://cnfx.com/llms/industry/foundries/product/vacuum-induction-degassing-unit.md"
  official_resource_url: "https://cnfx.com/industry/foundries/product/vacuum-induction-degassing-unit"
  is_verified_logic: true
attributes:
  vacuum_level:
    status: "config-dependent"
    typical_range: "0.1-1.0 mbar vacuum pressure, 50-1500°C molten metal temperature, 0.5-5.0 ton batch capacity"
    unit: "mbar"
  melt_capacity:
    status: "config-dependent"
    typical_range: "Scalable via configuration"
    unit: "kg"
engineering_limits:
  max_safe_operating_point:
    value: 10
    unit: "mbar"
    consequence: "Vapor pressure differential insufficient for gas removal at &gt;10 mbar, Curie temperature limit of ferromagnetic materials at &gt;200°C, thermal stress cracking in alumina-silica refractory above 1600°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Water ingress into vacuum chamber at &gt;100 ml/hour leak rate"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Double mechanical seal with helium leak detection at 1×10⁻⁶ mbar·L/s sensitivity"
  - node_2:
      trigger: "Induction coil insulation breakdown at &gt;3 kV/mm electric field strength"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "MgO powder insulation with 8 kV/mm dielectric strength and optical fiber temperature monitoring"
bom_nodes:
  vacuum-chamber:
    type: "device"
    urn: "URN:CNFX:ME:VACUUM_CHAMBER"
    interface_type: "physical-logic-coupled"
  treatment-ladle:
    type: "part"
    urn: "URN:CNFX:ME:TREATMENT_LADLE"
    interface_type: "physical-logic-coupled"
  induction-stirring-coil:
    type: "part"
    urn: "URN:CNFX:ME:INDUCTION_STIRRING_COIL"
    interface_type: "physical-logic-coupled"
  vacuum-pumping-system:
    type: "part"
    urn: "URN:CNFX:ME:VACUUM_PUMPING_SYSTEM"
    interface_type: "physical-logic-coupled"
  ladle-lift-seal-mechanism:
    type: "part"
    urn: "URN:CNFX:ME:LADLE_LIFT_SEAL_MECHANISM"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - PRESSURE EQUIPMENT DIRECTIVE 2014/68/EU"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/foundries/product/vacuum-induction-degassing-unit.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "d117a0e6e8a9957dabd2a2e21da9933f1812cdc394924cb909c6d814fcef01b2"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Vacuum Induction Degassing Unit

## 1. Technical Definition
Industrial machine for removing dissolved gases from molten metal using vacuum and induction stirring.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-1.0 mbar vacuum pressure, 50-1500°C molten metal temperature, 0.5-5.0 ton batch capacity**. Failure boundary: **Vacuum pressure &gt; 10 mbar causes insufficient degassing, induction coil temperature &gt; 200°C reduces stirring efficiency, refractory lining erosion &gt; 20mm thickness loss**, Mechanism: **Vapor pressure differential insufficient for gas removal at &gt;10 mbar, Curie temperature limit of ferromagnetic materials at &gt;200°C, thermal stress cracking in alumina-silica refractory above 1600°C**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Water ingress into vacuum chamber at &gt;100 ml/hour leak rate | 8 | Steam explosion from molten metal contact causing pressure surge to 5 bar | Double mechanical seal with helium leak detection at 1×10⁻⁶ mbar·L/s sensitivity |
| Induction coil insulation breakdown at &gt;3 kV/mm electric field strength | 8 | Phase-to-ground arc flash generating 10 kA short circuit current | MgO powder insulation with 8 kV/mm dielectric strength and optical fiber temperature monitoring |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| vacuum_level | Config-dependent | mbar | Verified |
| melt_capacity | Config-dependent | kg | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Vacuum Chamber](https://cnfx.com/llms/industry/basic-metal-manufacturing/product/vacuum-chamber.md) `(Standalone System)`
- [Treatment Ladle](https://cnfx.com/llms/industry/basic-metal-manufacturing/product/treatment-ladle.md) `(Standalone System)`
- [Induction Stirring Coil](https://cnfx.com/llms/industry/basic-metal-manufacturing/product/induction-stirring-coil.md) `(Standalone System)`
- [Vacuum Pumping System](https://cnfx.com/llms/industry/basic-metal-manufacturing/product/vacuum-pumping-system.md) `(Standalone System)`
- [Ladle Lift &amp; Seal Mechanism](https://cnfx.com/llms/industry/basic-metal-manufacturing/product/ladle-lift-seal-mechanism.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Vacuum Pump System**, **Induction Power Supply Unit**, **Molten Metal Transfer Ladle**  
**Downstream Applications**: High-Purity Steel Castings, Aerospace Turbine Components, Medical Implant Alloys  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: How does a vacuum induction degassing unit improve metal quality in foundries?
**A**: The unit removes hydrogen, oxygen, and nitrogen gases from molten metal through vacuum exposure and electromagnetic induction stirring, reducing porosity and inclusions for stronger, defect-free castings.

### Q: What maintenance is required for the refractory lined steel ladle?
**A**: Regular inspection and patching of refractory lining between cycles, with complete relining every 200-500 heats depending on metal type and temperature, to ensure thermal integrity and prevent contamination.

### Q: How does induction coil frequency affect degassing efficiency?
**A**: Higher frequency (typically 50-200 Hz) creates more vigorous electromagnetic stirring, improving gas bubble nucleation and removal while maintaining uniform temperature throughout the molten metal bath.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - PRESSURE EQUIPMENT DIRECTIVE 2014/68/EU

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Vacuum Induction Degassing Unit](https://cnfx.com/industry/foundries/product/vacuum-induction-degassing-unit)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: VACUUM_INDUCTION_DEGASSING_UNIT | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 3bd9c2c3
