Wartsila W22 piston pin
2026-04-07
1.Material & Manufacturing
Material: High-strength case-hardening alloy steel (typically 20CrNi3A, 18CrMnTi2, or equivalent premium grade)
2.Process:
Precision hot forging for optimized grain structure and strength
Deep case carburizing (hardened outer layer: 0.8–1.5 mm depth) with a tough, ductile core
Precision grinding (outer diameter and bore) for tight dimensional tolerances
Stress-relief heat treatment to resist fatigue cracking
Surface polishing for superior wear resistance and oil retention
Material: High-strength case-hardening alloy steel (typically 20CrNi3A, 18CrMnTi2, or equivalent premium grade)
2.Process:
Precision hot forging for optimized grain structure and strength
Deep case carburizing (hardened outer layer: 0.8–1.5 mm depth) with a tough, ductile core
Precision grinding (outer diameter and bore) for tight dimensional tolerances
Stress-relief heat treatment to resist fatigue cracking
Surface polishing for superior wear resistance and oil retention
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