---
title: "Seating Module Frame"
industry: "Furniture Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SEATING_MODULE_FRAME"
  data_integrity_hash: "f3ab3c83f2477cb4bef8065e03d390a8"
  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:SEATING_MODULE_FRAME"
  data_source_uri: "https://cnfx.com/llms/industry/furniture-manufacturing/product/seating-module-frame.md"
  official_resource_url: "https://cnfx.com/industry/furniture-manufacturing/product/seating-module-frame"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 kg static load, 0-50 N·m torque at joints"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 200
    unit: "MPa"
    consequence: "Stress concentration at welded joints exceeding material yield strength (S355 structural steel, σ_y = 355 MPa) due to combined bending and torsional loading"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Fatigue crack initiation at weld toe radius (R=2 mm) due to cyclic loading"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement weld toe grinding to R=5 mm minimum radius, apply post-weld heat treatment (PWHT) at 600°C for 2 hours"
  - node_2:
      trigger: "Corrosion-induced material thinning in coastal environments (chloride concentration &gt;500 mg/m²·day)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Apply zinc-aluminum thermal spray coating (85% Zn, 15% Al) with 150 μm minimum thickness, epoxy-polyurethane topcoat"
bom_nodes:
  side-rails:
    type: "component"
    urn: "URN:CNFX:ME:SIDE_RAILS"
    interface_type: "physical-logic-coupled"
  cross-supports:
    type: "component"
    urn: "URN:CNFX:ME:CROSS_SUPPORTS"
    interface_type: "physical-logic-coupled"
  corner-braces:
    type: "component"
    urn: "URN:CNFX:ME:CORNER_BRACES"
    interface_type: "physical-logic-coupled"
  connection-points:
    type: "component"
    urn: "URN:CNFX:ME:CONNECTION_POINTS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/furniture-manufacturing/product/seating-module-frame.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "4c232453553bc0047dd5868572b7a03fe6697b720e55eb4ae4c92adec3c70284"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Seating Module Frame

## 1. Technical Definition
Structural framework that forms the core support for individual seating modules in a modular sofa system

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 kg static load, 0-50 N·m torque at joints**. Failure boundary: **Yield strength exceeded at 200 MPa stress concentration points, joint deflection exceeding 5° permanent deformation**, Mechanism: **Stress concentration at welded joints exceeding material yield strength (S355 structural steel, σ_y = 355 MPa) due to combined bending and torsional loading**.

### 2.1 Analytical Physics Model
Governed by the **Frame Structural Deflection Analysis**:

> **Primary Equation**: $\delta = \frac{5 q L^4}{384 E I}$  
> **Engineering Impact**: Ensures structural stability for multi-stage machines.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| q | Uniform Load | Engineering Constant |
| E | Elastic Modulus | Engineering Constant |
| I | Moment of Inertia | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Fatigue crack initiation at weld toe radius (R=2 mm) due to cyclic loading | 8 | Progressive crack propagation leading to frame fracture at stress concentration points | Implement weld toe grinding to R=5 mm minimum radius, apply post-weld heat treatment (PWHT) at 600°C for 2 hours |
| Corrosion-induced material thinning in coastal environments (chloride concentration &gt;500 mg/m²·day) | 8 | Reduced cross-sectional area leading to buckling failure under compressive loads | Apply zinc-aluminum thermal spray coating (85% Zn, 15% Al) with 150 μm minimum thickness, epoxy-polyurethane topcoat |

## 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**: **CNC Router**, **Welding Robot**, **Powder Coating System**  
**Downstream Applications**: Modular Sofa Section, Sectional Sofa Unit, Seating Module Assembly  

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

### Q: What materials are best for a seating module frame in modular furniture?
**A**: Hardwood offers durability and traditional appeal, plywood provides stability and cost-effectiveness, engineered wood ensures consistency, and steel tubing delivers maximum strength for heavy-duty applications.

### Q: How do connection points and corner braces enhance modular sofa frames?
**A**: Connection points allow secure joining of multiple modules, while corner braces reinforce joints to prevent wobbling and increase load capacity, ensuring long-term structural integrity.

### Q: What role do cross supports and side rails play in seating module frames?
**A**: Cross supports distribute weight evenly across the frame to prevent sagging, and side rails provide lateral stability, maintaining the shape and alignment of the modular sofa system.

## 6. Manufacturing Compliance

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Seating Module Frame](https://cnfx.com/industry/furniture-manufacturing/product/seating-module-frame)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: SEATING_MODULE_FRAME | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: dd466366
