---
title: "Liner"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:LINER"
  data_integrity_hash: "23064fb22f79de7819f051fd4d8903cd"
  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:LINER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/liner.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/liner"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.8-2.5 MPa at 1500-2000°C"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 350
    unit: "MPa"
    consequence: "Thermal fatigue from cyclic temperature gradients exceeding 800°C/mm across 3mm wall thickness, causing creep rupture at grain boundaries"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Fuel-air ratio deviation beyond 0.018-0.022 stoichiometric range"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Multi-zone fuel injection with 32 individually controlled nozzles and real-time optical temperature monitoring"
  - node_2:
      trigger: "Thermal barrier coating spallation due to 0.3% yttria-stabilized zirconia bond coat oxidation at 1150°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Graded thermal barrier coating with 150μm MCrAlY bond coat and 300μm 7YSZ top coat applied via plasma spray at 10,000°C"
bom_nodes:
  cooling-holes:
    type: "component"
    urn: "URN:CNFX:ME:COOLING_HOLES"
    interface_type: "physical-logic-coupled"
  mounting-flange:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_FLANGE"
    interface_type: "physical-logic-coupled"
  dilution-holes:
    type: "component"
    urn: "URN:CNFX:ME:DILUTION_HOLES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/liner.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "d7ae77d7703bf6c3ae02bb956feca76752013d60ff1a5154a69b01ef960f99de"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Liner

## 1. Technical Definition
A protective inner wall component of a gas turbine combustion chamber that contains and directs the combustion process.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.8-2.5 MPa at 1500-2000°C**. Failure boundary: **Thermal stress exceeds 350 MPa yield strength at 1100°C material limit**, Mechanism: **Thermal fatigue from cyclic temperature gradients exceeding 800°C/mm across 3mm wall thickness, causing creep rupture at grain boundaries**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Fuel-air ratio deviation beyond 0.018-0.022 stoichiometric range | 8 | Localized hot spots exceeding 2100°C causing material phase transformation | Multi-zone fuel injection with 32 individually controlled nozzles and real-time optical temperature monitoring |
| Thermal barrier coating spallation due to 0.3% yttria-stabilized zirconia bond coat oxidation at 1150°C | 8 | Base metal temperature increase from 950°C to 1100°C reducing creep life by 85% | Graded thermal barrier coating with 150μm MCrAlY bond coat and 300μm 7YSZ top coat applied via plasma spray at 10,000°C |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Gas Turbine Combustion Chamber Assembly Fixture**, **High-Temperature Ceramic Coating Spray System**, **Precision CNC Machining Center**  
**Downstream Applications**: Industrial Gas Turbine Power Generation Unit, Aircraft Jet Engine, Marine Propulsion Gas Turbine  

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

### Q: What materials are used in gas turbine combustion chamber liners?
**A**: Liners are typically made from nickel-based superalloys, cobalt-based superalloys, or ceramic matrix composites to withstand extreme temperatures and corrosive combustion environments.

### Q: What is the purpose of cooling holes in a turbine liner?
**A**: Cooling holes allow controlled airflow to cool the liner surface, preventing thermal degradation and extending component life in high-temperature combustion chambers.

### Q: How are combustion chamber liners mounted in gas turbines?
**A**: Liners are secured using mounting flanges that interface with the turbine structure, ensuring proper alignment and containment of the combustion process while allowing for thermal expansion.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Liner](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/liner)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: LINER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 267c679a
