Sinowon Ultrasonic Hardness Tester: Revolutionary Solution for Crankshaft Hardness Measurement in Automotive Manufacturing

As a core component of engines, crankshaft hardness directly determines wear resistance, fatigue strength, and overall performance. Traditional destructive testing methods struggle to meet modern efficiency demands. Sinowon's ultrasonic hardness testers, featuring non-destructive measurement, high precision (±3% HV/±1.5HRC), and portable design, emerge as the optimal solution for crankshaft quality control.

Why Crankshaft Hardness Matters

Crankshafts endure alternating bending/torsional loads, requiring:

• Surface hardness ≥45HRC (ductile iron) or ≥52HRC (alloy steel)
• Uniform hardness distribution across journals, fillets, and hardened layers (1-4mm depth)
• Substandard hardness risks premature failure and reduces engine lifespan.

Overcoming Traditional Testing Limitations with Sinowon's Innovation

Challenges of Conventional Methods
✖ Destructive sampling (specimen cutting/polishing)
✖ Complex operation (e.g., microscopic Vickers requiring 30+ mins/sample)
✖ Geometric limitations (unable to test curved/journal surfaces)

Sinowon Ultrasonic Hardness Tester Advantages
✓ Non-destructive testing - Preserves shot-peened surfaces (100-200% coverage required)
✓ 2-second measurements - 30%+ faster QA with 2,000-data storage (SU-300/SU-400 models)
✓ 360° portability - 500g lightweight design for complex geometries
✓ 7-scale compatibility - HV, HRC, HB, etc., adaptable to steel/ductile iron crankshafts

Precision Applications in Crankshaft Manufacturing

1. Journal & Fillet Hardness Mapping

• Measures stress-prone areas with micro-indentation technology (visible under 400x microscopy)
• Avoids deformation from traditional roll-forming processes

2. Production Line QA

• In-process testing without disassembly
• Real-time statistics (max/avg values) via Bluetooth®-enabled models

Industry-Proven Value Proposition

• Cost Reduction - Eliminates sample destruction; 1 device replaces multiple tools
• ASTM A1038 & DIN 50159 Compliance - Meets global OEM standards
• Military-Grade Reliability - Trusted by heavy-duty/defense vehicle manufacturers
• Custom Solutions - 1-year warranty + application-specific technical support

Drive Precision with Sinowon

As pioneers in non-destructive testing technology, Sinowon empowers the automotive industry to achieve:

Explore Crankshaft Testing Solutions:
 www.sinowon.com