ESK公司和产品介绍.ppt

THE ESK EKasic? FAMILYWHY DIFFERENT GRADES?为什么ESK 要开发 EKasic? 系列几种不同的规格 ESK CERAMICS Dr. Dietrich Lange Optimized EKasic? materials for tribological applications EKasic? C优异的耐磨擦耐腐蚀应用材料： EKasic? C Target: Reducing the amount of grain boundaries Anchoring of the grains into the bulk Solution: Increasing the grain size to above 500 μm Bimodal grain size distribution 20 μm Rotary ring Stationary ring Seal gap max. depth of grain boundary corrosion 20 μm Rotary ring Stationary ring Seal gap max. depth of grain boundary corrosion Grain boundary corrosion 耐颗粒边界腐蚀 Maximum depth ca. 20 μm For fine-grained materials removal of single grains is possible ESK CERAMICS Optimized EKasic? materials for tribological applications EKasic? C 优异的耐磨擦耐腐蚀应用材料： EKasic? C 0,1 1 10 100 1000 10000 weight loss [mg/cm2 a] Medium: H2SO4 T=100°C WC-Co Si-SiC ZrO2 Al2O3 EKasic? F EKasic? C Conditions:Sodium Hydroxide Permanganese (degreaser) 80°C, 70h, pH 11 EKasic? C EKasic? F ESK CERAMICS Dr. Dietrich Lange DI- water, 1 bar, 20°C. Force was increased continuously until shut-down occurred. 0 0,2 0,4 0,6 0,8 1 Maximum Force [N] EKasic? F EKasic? C EKasic? G + 100 % + 200% Optimized EKasic? materials for tribological applications： EKasic? G 出色的自润滑材料：EKasic? G 含石墨颗粒碳化硅 ESK CERAMICS Dr. Dietrich Lange Benchmark study: load capacity power comsumption:EKasic? F材料研究：端面压力 摩擦能耗关系 3 Runs: pmax*= 38 / 40 / 44 bar 41 +/- 3 bar ? EKasic? F is a reliable material for all basic demands (pump pressure : 25-40 bar) ESK CERAMICS Dr. Dietrich Lange Benchmark study: load capacity power comsumption:EKasic? F材料研究：端面压力 摩擦能耗关系EKasic? G Optimized materials like EKasic? G are running stable up to125 bar ESK CERAMICS Dr. Dietrich Lange Key to success: grafite + coarse bimodal SiC-grains Bench mark study: load capacity power consumption comparison OF EKASIC? F, C and G 三种材料的摩擦能耗对比 ESK CERAMICS Dr. Dietrich Lange EKasic? P EKasic? C EKasic? G Conclusion: EKasic? G shows lowest power consumpt