97.5% uniformity after vacuum carburizing, enabling consistent transmission performance. Salt-spray Corrosion Test (ASTM B117): Anti-corrosion coatings prolong life in water/acidic environments by 3x. Reduced Noise & Vibration: Tooth profile optimization under ISO 21771 yields 70,000h verify records. More than 500 industrial clients worldwide have trusted our large gear ring solutions for dependable transmission and long-term energy savings. 8. Application Case Studies Case A – Metallurgical Industry : In 2023, a leading steel mill in Shandong modernized 8 hot-rolling lines with 1000 Axle Differential Large Gear Ring —project data revealed: Annual downtime dropped by 22% after upgrading to custom carburized gear rings. Noise reduced by 28%, as validated by on-site ISO 21771 gear mesh analysis. Cost-saving: Lifespan reached 6.5 years (up from 3.8 years), substantiating a 41% TCO reduction. Case B – Petrochemical Transmission : For water circulation pumps in a southern China petrochemical plant, rings with Stainless 17-4PH alloy dramatically outperformed ductile iron. After 4 simulated years: Zero visible pitting/corrosion (Salt spray test: 1,200h PASSED) 94% transmission efficiency under high-load, with practically unchanged gear profiles. No unscheduled maintenance events, reducing risk in critical production lines. Case C – Harvester Drive Upgrades : An EU agricultural OEM replaced 200+ drive units with 18CrNiMo7-6 gear rings: Tooth breakage frequency dropped from 7‰ to " />