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1、Grease Technology滑脂技术,April, 99,2,MAPPL grease presentation 1,Definition定义,A lubricating grease is a firm to semi-fluid product obtained by the dispersion of 2 to 15% of a thickening agent into a lube base oil.润滑脂是一种在基础油中加入215%稠化剂的硬至半流体的产品。,April, 99,3,MAPPL grease presentation 1,Composition 组成,What
2、 is grease 滑脂是什么？90% oil + additives 90%的基础油和添加剂10% thickener 10%的稠化剂Grease is typically 90% Oil plus Additives and10% Thickener.滑脂的典型组成是90%的基础油和添加剂加上10%的稠化剂,April, 99,4,MAPPL grease presentation 1,Composition 组成,Types of Thickeners 稠化剂种类Soap 皂基Non-soap 非皂基,April, 99,5,MAPPL grease presentation 1,Co
3、mposition 组成,Thickeners used by Mobil 美孚使用的稠化剂Lithium (Soap) 锂(皂基)Lithium Complex (Soap) 复合锂(皂基)Clay (Non-soap) 粘土(非皂基),April, 99,6,MAPPL grease presentation 1,Composition 组成,Soap Thickener 皂基稠化剂碱 脂肪酸皂基 水Alkali + Fatty Acid Soap + Water Saponification皂化,April, 99,7,MAPPL grease presentation 1,Compos
4、ition 组成,Non Soap Thickener 非皂基Clay 粘土,PolarActivator,Clay Platelet Stack粘土片堆,April, 99,8,MAPPL grease presentation 1,Properties Of Grease Thickeners滑脂稠化剂性能,Maximum最高使用,Usage 癈 温度,Mechanical,Stability稳定性,Lithium * 锂,120,Excellent极佳,Lithium Complex * 复合锂,175,Excellent,Clay * 粘土,175,Good 好,Sodium 钠,12
5、5,Good,Polyurea 聚脲,175,Poor - Good,Calcium Complex 复合钙,175,Poor - Good,Aluminium Complex 复合铝,175,Good,*,Used in Mobil Products,April, 99,9,MAPPL grease presentation 1,Composition组成,Base fluids used by Mobil 美孚使用的基础油MineralParaffinic 石蜡基 矿物Naphthenic 环烷基SyntheticPolyalphaolefin聚烯烃 合成Ester 酯 Polyglyco
6、l 聚多元醇Alkylated Aromatics 烷化芳香烃VegetableNatural Esters植物油天然酯Viscosity Range :ISO VG 22 to ISO VG 1500粘度范围,April, 99,10,MAPPL grease presentation 1,Composition组成,Additives used by Mobil美孚使用的添加剂 Soluble:Antioxidant 抗氧化剂 溶液Antirust 防锈剂Antiwear / extreme pressure抗磨/ 极压添加剂Antifatigue 抗疲劳添加剂Friction modif
7、iers 摩擦改良剂Polymers 聚合物Solid:Molybdenum disulfide 二硫化钼 固体Graphite 石墨,April, 99,11,MAPPL grease presentation 1,Manufacture 生产,Two Mobil processes美孚两种方式Batch-10 ton/day批量生产Continuous- 2 ton/hour连续生产,April, 99,12,MAPPL grease presentation 1,Manufacture 生产,Conventional grease process传统滑脂生产方式,Alkali + Fat
8、碱 脂肪酸,Soap + Water 皂基水,Saponification 皂化,Drying of soap 皂基干燥,Addition of oil + Additives 加油和添加剂,Coarse mixing 粗混合,Ultrafine mixing 超精细混合,Filtering, 过滤,deaeration,Finishing,Contactor接触器,Kettle反应釜,Homogeniser搅拌器,April, 99,13,MAPPL grease presentation 1,Manufacture生产,Mobil conventional batch process 美孚
9、传统批量生产方式,Contactor接触器,Kettle反应釜,Homogeniser 搅拌器,Grease滑脂,Finishing,Pump,Filter,Deaerator过滤,High Speed,Motor,Soap皂基,Base Oil 基础油,Steam 蒸汽,Additives添加剂,Water 水,Base Oil 基础油,Fatty Acids 脂肪酸,Alkali 碱,Baffles挡板,April, 99,14,MAPPL grease presentation 1,Manufacture 生产,Continuous grease process 连续生产方式,April
10、, 99,15,MAPPL grease presentation 1,Structure 结构,Consider a grease like a sponge 象块海绵Pores filled with oil 孔隙充满油Mechanical or thermal stress releases oil机械或热力使油释放,April, 99,16,MAPPL grease presentation 1,When are Greases Used ?什么时候使用滑脂,When there is infrequent re-lubrication当不需要频繁地润滑When re-lubricat
11、ion is economically unjustifiable当不能证明再润滑是经济的When a lubricant has to stay in place当润滑剂必须呆在一个地方时,April, 99,17,MAPPL grease presentation 1,Purpose Of A Grease 滑脂的作用,Provide adequate lubrication 提供足够的润滑Protect against corrosion 抗腐蚀Act as a seal 密封Resist Leaking 阻止泄漏,April, 99,18,MAPPL grease presentati
12、on 1,Multiservice Grease Balance of Properties多功能滑脂的性能平衡,Structure结构稳定性,Consistency 稠度,Water Resistance,抗水性,EP/AW极压/抗磨性,High temperature,高温性能,Low Temperature,低温流动性,Corrosion Protection,防腐,Compatibility 相容性,April, 99,19,MAPPL grease presentation 1,Grease Characteristics滑脂特性,Appearance 外观Consistency 稠
13、度(针入度)Worked工作后Unworked工作前Dropping Point 滴点Stability稳定性Structural结构Chemical化学,April, 99,20,MAPPL grease presentation 1,Consistency 稠度(针入度),Consistency varies with temperature & shear stress. Is a function of - 稠度随温度和剪切力而变化，受如下两因素影响base stock viscosity 基础油黏度thickener chemistry 稠化剂的化学性能Consistency is
14、measured in tenths of a millimetre at 25癈, unworked and worked.稠度大小用1/10 毫米数表示(25)，分工作前和工作后稠度Consistency ranges - NLGI classification (NLGI 000 - 6)稠度范围NLGI 分类( NLGI 0006),April, 99,21,MAPPL grease presentation 1,Dropping Point 滴点,Temperature at which a drop of oil falls from the orifice of a test c
15、up脂杯开始滴下第一滴油时的温度Relationship to melting point与熔点有关,April, 99,22,MAPPL grease presentation 1,Extreme Pressure Level 极压程度,Four ball wear test 四球磨损试验Four ball EP test 四球极压试验Timken OK load test 梯姆肯负荷试验,April, 99,23,MAPPL grease presentation 1,Selecting a Grease 滑脂选择,Oil properties control grease properties基础油的性能控制滑脂性能,
