---
title: "Upper Blade"
industry: "Fabricated Metal Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:UPPER_BLADE"
  data_integrity_hash: "9f71ebad0a06074193ce1a6522cc6cc1"
  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:UPPER_BLADE"
  data_source_uri: "https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/upper-blade.md"
  official_resource_url: "https://cnfx.com/industry/fabricated-metal-product-manufacturing/product/upper-blade"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "Shear force: 50-500 kN, Blade clearance: 0.05-0.15 mm per mm of material thickness, Blade angle: 85-89 degrees"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 58
    unit: "HRC"
    consequence: "Adhesive wear (galling) at blade edge due to high contact pressure exceeding material yield strength (typically &gt;700 MPa), leading to plastic deformation and edge rounding"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Work hardening of blade edge material exceeding 65 HRC"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Controlled tempering cycle at 200-250°C for 2 hours after grinding to maintain hardness at 60-62 HRC"
  - node_2:
      trigger: "Misalignment exceeding 0.05 mm between upper and lower blade mounting surfaces"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Precision ground mounting surfaces with flatness tolerance of 0.01 mm and perpendicularity of 0.02 mm/300 mm"
bom_nodes:
  cutting-edge:
    type: "component"
    urn: "URN:CNFX:ME:CUTTING_EDGE"
    interface_type: "physical-logic-coupled"
  mounting-holes:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_HOLES"
    interface_type: "physical-logic-coupled"
  blade-body:
    type: "component"
    urn: "URN:CNFX:ME:BLADE_BODY"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - MACHINERY DIRECTIVE 2006/42/EC"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/upper-blade.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a901250868728b2293f651cacc8407fefa072631fc2edd1ddc62e8cd54381f86"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Upper Blade

## 1. Technical Definition
The stationary cutting blade in a guillotine shear that works in conjunction with the lower blade to shear sheet metal.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **Shear force: 50-500 kN, Blade clearance: 0.05-0.15 mm per mm of material thickness, Blade angle: 85-89 degrees**. Failure boundary: **Edge hardness drops below 58 HRC, Clearance exceeds 0.25 mm per mm of material thickness, Blade deflection exceeds 0.02 mm under maximum load**, Mechanism: **Adhesive wear (galling) at blade edge due to high contact pressure exceeding material yield strength (typically &gt;700 MPa), leading to plastic deformation and edge rounding**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Work hardening of blade edge material exceeding 65 HRC | 8 | Micro-crack initiation and propagation along carbide boundaries | Controlled tempering cycle at 200-250°C for 2 hours after grinding to maintain hardness at 60-62 HRC |
| Misalignment exceeding 0.05 mm between upper and lower blade mounting surfaces | 8 | Uneven wear pattern causing localized edge chipping | Precision ground mounting surfaces with flatness tolerance of 0.01 mm and perpendicularity of 0.02 mm/300 mm |

## 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**: **Sheet Metal Feeder**, **Hydraulic Power Unit**, **Material Handling Crane**  
**Downstream Applications**: Metal Cabinets, Automotive Body Panels, Industrial Ductwork  

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

### Q: What materials are available for the upper blade in guillotine shears?
**A**: Upper blades are typically manufactured from Tool Steel for general use, High-Speed Steel for faster cutting operations, or Carbide-Tipped Steel for maximum wear resistance and longevity when cutting abrasive materials.

### Q: How does the upper blade work with the lower blade in a guillotine shear?
**A**: The upper blade is the stationary component that works in conjunction with the moving lower blade. As the lower blade ascends, it presses the sheet metal against the sharp edge of the upper blade, creating a clean shearing action to cut the material.

### Q: What are the key components (BOM) of an upper blade assembly?
**A**: The primary components are the Blade Body (main structural support), the Cutting Edge (the sharpened portion that performs the shearing), and Mounting Holes (for secure attachment to the guillotine shear frame).

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - MACHINERY DIRECTIVE 2006/42/EC

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Upper Blade](https://cnfx.com/industry/fabricated-metal-product-manufacturing/product/upper-blade)**

### 🌐 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**: UPPER_BLADE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: dc15c9df
