Description
Technical Parameters
Dynamic Performance & Extreme Environment Adaptation
| Model | Wire Diameter (mm) | Material Grade | Hardness (HRC) | Clamping Force (kN) | Impact Toughness (J, 20°C) | Thermal Aging Resistance (120°C/1000h) | Vibration Damping Coefficient | Fatigue Life (Cycles) | Applicable Climate Zone |
|---|---|---|---|---|---|---|---|---|---|
| NBL-19 | 19.0 ± 0.15 | 60Si2CrNi | 45-50 | 15.0-18.0 | ≥20 | ≤2% clamping force loss | 0.35 | 6,000,000 | Tropical (25°C~+40°C, high humidity) |
| NBL-21 | 21.0 ± 0.2 | 42SiMnCrV | 46-51 | 18.0-21.0 | ≥22 | ≤1.5% clamping force loss | 0.38 | 7,000,000 | Plateau (-20°C~+30°C, low oxygen) |
| NBL-23 | 23.0 ± 0.2 | 60Si3CrMo | 44-49 | 21.0-24.0 | ≥25 | ≤1.5% clamping force loss | 0.40 | 8,000,000 | Coastal (-10°C~+35°C, high salt fog) |
Production Quality Control & Application Details
| Model | Critical Dimension Tolerance | Production Process | Quality Inspection Items | Surface Treatment Standard | Matching Fastener Components | Installation Precision Requirement | Service Life (Years) | Compliance Certifications | Key Quality Control Points |
|---|---|---|---|---|---|---|---|---|---|
| NBL-15 | ±0.2mm (length), ±0.1mm (diameter) | Cold forming + heat treatment + shot peening | Tensile test, fatigue test, dimension measurement | ISO 1461 (hot-dip galvanized) | M20 screw spike, HDPE rail pad | Clip-to-rail alignment ≤±0.5mm | ≥12 | CE, DIN 17221 | Shot peening intensity (0.2~0.3mmA) |
| NBL-17 | ±0.2mm (length), ±0.1mm (diameter) | Cold forming + heat treatment + passivation | Tensile test, fatigue test, impact test, corrosion test | ISO 6336 (passivated) | M22 T-bolt, EVA rail pad | Clip-to-rail alignment ≤±0.4mm | ≥15 | CE, AREMA | Heat treatment temperature (860±10°C) |
| NBL-19 | ±0.15mm (length), ±0.08mm (diameter) | Precision cold forming + quenching + tempering | Tensile test, fatigue test, impact test, thermal aging test | ISO 2081 (Dacromet) | Embedded sleeve (M24), rubber pad | Clip-to-rail alignment ≤±0.3mm | ≥18 | CE, EN 13481, ISO 9001 | Quenching cooling rate (≥50°C/s) |
| NBL-21 | ±0.15mm (length), ±0.08mm (diameter) | Precision cold forming + quenching + tempering + ultrasonic cleaning | Tensile test, fatigue test, impact test, ultrasonic flaw detection | ISO 10683 (electroplated zinc) | High-strength screw spike , silicone pad | Clip-to-rail alignment ≤±0.3mm | ≥20 | CE, GOST, ISO 9001 | Ultrasonic flaw detection (no internal defects) |
| NBL-23 | ±0.1mm (length), ±0.05mm (diameter) | Hot forming + quenching + tempering + shot peening | Tensile test, fatigue test, impact test, salt spray test | ISO 12944 (corrosion-resistant painting) | Heavy-duty T-bolt , composite pad | Clip-to-rail alignment ≤±0.2mm | ≥25 | CE, AREMA, DIN 6799 | Salt spray test (≥1500h no rust) |
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