最新GREASE润滑油基本知识介绍课件.ppt

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1、Grease Technology滑脂技术April, 992MAPPL grease presentation 1Definition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, 993MAPPL grease presentation 1Composition 组成What is grease

2、 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, 994MAPPL grease presentation 1Composition 组成Types of Thickeners 稠化剂种类 Soap 皂基 Non-soap 非皂基April, 995MAPPL grease presentation 1Composition 组成Thi

3、ckeners 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, 996MAPPL grease presentation 1Composition 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, 997MAPPL grease presentation 1Composition 组成Non Soap Thick

4、ener 非皂基Clay 粘土PolarActivatorClay Platelet Stack粘土片堆Polar Activator极性和性剂Partially Separated PlateletStack Trapping Oil部分分离的粘土片间充满油品April, 998MAPPL grease presentation 1Properties 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120Excellent极佳Lithium Complex * 复合锂 175

5、ExcellentClay * 粘土175Good 好Sodium 钠125GoodPolyurea 聚脲175Poor - GoodCalcium Complex 复合钙175Poor - GoodAluminium Complex 复合铝175Good* Used in Mobil ProductsApril, 999MAPPL grease presentation 1Composition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

6、聚烯烃 合成Ester 酯 Polyglycol 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, 9910MAPPL grease presentation 1Composition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

7、抗疲劳添加剂Friction modifiers 摩擦改良剂Polymers 聚合物Solid:Molybdenum disulfide 二硫化钼 固体Graphite 石墨April, 9911MAPPL grease presentation 1Manufacture 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, 9912MAPPL grease presentation 1Manufacture 生产Conventional grease process传统滑脂生产方式A

8、lkali + Fat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, 9913MAPPL grease presentation 1Manufacture生产Mobil conventional batch process

9、 美孚传统批量生产方式 Contactor接触器Kettle反应釜Homogeniser 搅拌器Grease滑脂Finishing PumpFilter Deaerator过滤High Speed MotorSoap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, 9914MAPPL grease presentation 1Manufacture 生产Continuous grease process 连续生产方式ShearVal veFi ni shi

10、ngSecti onG rease StorageTankS SC onsi stom eterFl ash C ham berVacuumSteamReactorFattyAci dsAl kal iBaseO i lAddi -ti vesBaseO i lApril, 9915MAPPL grease presentation 1Structure 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Apr

11、il, 9916MAPPL grease presentation 1When 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-lubrication 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, 9917MAPPL grease presentation 1Purpose Of A Grease 滑脂的作用 Provide

12、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, 9918MAPPL grease presentation 1Multiservice 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 Pro

13、tection 防腐Compatibility 相容性April, 9919MAPPL grease presentation 1Grease Characteristics滑脂特性 Appearance 外观 Consistency 稠度(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, 9920MAPPL grease presentation 1Consistency 稠度(针入度) Consistency varies with temperature & sh

14、ear 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 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) Apr

15、il, 9921MAPPL grease presentation 1Dropping Point 滴点 Temperature at which a drop of oil falls from the orifice of a test cup脂杯开始滴下第一滴油时的温度 Relationship to melting point与熔点有关April, 9922MAPPL grease presentation 1Extreme 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

16、 load test 梯姆肯负荷试验April, 9923MAPPL grease presentation 1Selecting a Grease 滑脂选择Oil properties control grease properties基础油的性能控制滑脂性能Viscosity粘度Flow流动性能OilRelease释油性BestUse最佳使用Low 低Easy 容易Low低High Speed 高速Light Load 低载High 高Difficult 困难 High高Low Speed 低速Heavy Load 重载April, 9924MAPPL grease presentatio

17、n 1Selecting a Grease 滑脂选择 Application :应用 Type of mechanism设备种类 Type of distribution润滑方式 Conditions of use使用条件 Grease :滑脂 Consistency grade稠度级别 Soap / base stock technology皂基/基础油技术 Base oil selection 基础油选择 Other greases别的滑脂April, 9925MAPPL grease presentation 1Selection by Consistency 稠度选择Most comm

18、on NLGI grade is # 2大多数通用 NLGI 2NLGI # 3 is used for high rotary speeds or vibratory loads.NLGI 3 用于高速旋转或有振动负荷时Less than NLGI # 2 are recommended where some flow rate is required : 低于NLGI 2 推荐用于有流动性要求的场所 enclosed gears闭市齿轮 centralized system集中润滑系统April, 9926MAPPL grease presentation 1Selection By So

19、ap/Base Oil Type通过皂基/基础油种类选择Selection is made according to operating temperature根据操作温度选择Chart below is related to continuous temperature下表为不同温度时的选择Temperature Technology Mobil Product 温度技术美孚产品 200癈Special No productUp to 200癈Bentonite + PAOMobiltemp SHCUp to 180癈Lithium complex +PAOMobilith SHCUp to

20、 170癈Bentonite + MineralMobiltempUp to 150癈Lithium complex + MineralMobilgrease HPUp to 130癈Lithium + MineralMobilux EPApril, 9927MAPPL grease presentation 1Selection by Base Oil (Bearings)通过基础油选择(轴承) Speed factor ( N.Dm )速度参数(N.Dm) High Speed 高速: low viscosity 低粘度 Slow Speed 低速: high viscosity高粘度 L

21、oad factor ( C/P ) 负荷参数(C/P) High load 重载: high viscosity高粘度 Low load 低载: low viscosity 低粘度 Temperature 温度 Low temperature 低温: low viscosity 低粘度 High temperature高温: high viscosity 高粘度April, 9928MAPPL grease presentation 1Compatibility With Other Greases与其它滑脂的相容性 Different grease mixes can cause a dr

22、op of consistency if the grease soaps/additives are not compatible.如果皂基和添加剂不相容，不同滑脂混合会导致稠度下降 Don抰 mix greases, even for re-lubrication, unless compatibility is known除非相容，滑脂不要混合。 Try to remove as much old grease as possible when changing greases当更换滑脂时，尽量排除旧的滑脂April, 9929MAPPL grease presentation 1Com

23、patibility Test 相容性试验Application DetailsGrease Details应用细节滑脂细节Grease compatibility 滑脂相容性Worked stability工作稳定性Cone penetration锥体针入度Evaluation of 5 mixtures: 5种比例混合Grease A:0255075100Grease B:100 7550250April, 9930MAPPL grease presentation 1Water Washout Resistance 抗水冲洗Results in Loss of lubrication p

24、roperties.失去润滑性能Often due to customer cleaning practises.通常由于用户清洗设备引起Tests designed to measure resistance to washout :抗水冲洗性能测试试验 Water washout水冲洗量 Water spray-off水喷出量 Wet roll stability湿辊稳定性April, 9931MAPPL grease presentation 1Water Contamination水污染% H2O 水Penetration 针入度0 days 0 天Unworked/Worked (6

25、0 x)Penetration 针入度7 days 7天Unworked/Worked (60 x)5286 / 256 262 / 287 10255 / 253 261 / 286 15265 / 258 257 / 276 25216 / 267 275 / 289 New Grease新滑脂318 / 318 Mobilith SHC 460Good retention of consistency when contaminated with water当有水污染时，稠度能保持很好April, 9932MAPPL grease presentation 1Water Contamin

26、ation水污染M obi l grease H P 222G ood retenti on of consi stency w hen contam i nated w i th w ater% H2OPenetrati on0 daysUnw orked/W orked (60 x)Penetrati on7 daysUnw orked/W orked (60 x)5270 / 280 288 / 289 10286 / 286 289 / 295 15280 / 280 285 / 295 25290 / 284 292 / 292 N ew G rease281 / 269 April

27、, 9933MAPPL grease presentation 1How To Grease A Bearing Properly如何正确润滑轴承The Ideal quantity of grease in a bearing is 2/3 of bearings free capacity 理想的滑脂量应是轴承空腔的2/3The best way to grease a bearing is to : dismantle, clean, grease, & reassemble轴承润滑的最佳方法：撤卸、清洗、加脂和装配Beware of over filling bearings: 注意不

28、要加脂过量 Seals fail 密封失效 Solid contaminations accumulate 固体污染物积累 Temperatures increase. 温度增加Quantity of grease for each top-up : G ( grams) = 0.005 DB ,滑脂加入量： G(克)= 0.005 DB D = bearing outside diameter in mm ; 轴承外径 mm B = bearing width in mm 轴承宽度 mmApril, 9934MAPPL grease presentation 1Mobil Grease Fa

29、milies 美孚滑脂Soap Type皂基皂基Application应用应用Product Family产品产品LithiumMultipurpose industrialMobilux锂基多功能工业滑脂Lithium complexAutomotive - industrialMobilgrease复合锂汽车工业Lithium complexWide service rangeMobilith复合锂广泛应用ClayWide service rangeMobiltemp粘土 广泛应用Lithium/esterEnvironment protectionMobilgrease EAL锂/酯环保

30、April, 9935MAPPL grease presentation 1Mobil Specialty Steel Industry Greases美孚特殊钢铁工业滑脂 Grease HSM 320 - Hot Strip Mill roll table bearings 热轧机辊道轴承ISO 320 base oil, LiCx soap 复合锂 Grease BC 300 - Continuous caster bearings (bloom caster) 连铸机轴承(板坯连铸机)ISO 680 baso oil, LiCx soap, high temp additives 复合锂

31、，高温添加剂 Grease SI 310 - Work roll bearings (Steel Industry)工作辊轴承(钢厂)ISO 680 base oil, LiCx soap 复合锂April, 9936MAPPL grease presentation 1Unique Features Of Mobil Greases美孚滑脂的独特性能 Lithium complex and clay thickeners采用复合锂和粘土作稠化剂 ISO viscosity grades 15 to 1500 粘度级别：ISO VG151500 Six NLGI grease grades 6

32、种NLGI级别 Quality system可靠的质量保证系统 Technologies 滑脂技术Batch and continuous manufacturing 批量和连续生产Two lithium complex thickeners 2种复合锂稠化剂Synthetic grease line 合成滑脂April, 9937MAPPL grease presentation 1Mechanical Stability Details机械稳定性BrandN LG I G radeProl onged W orki ng, 1000, 000 X % C hangeRol l Stabi

33、l i ty, % C hangeM obi l i th SHC 220264M obi l i th SHC 4601 1/264M obi l grease HP 222286M obi l grease HP 222 Speci al286M obi l ux EP 0, 1, 2, 30, 1, 2, 31010M obi l grease M P21010M obi l grease 15221010April, 9938MAPPL grease presentation 1High Temperature Performance Details高温性能BrandDropping

34、Point ?C滴点% Evaporation175癈, 30 Hr.蒸发量Bomb OxidationkPa Loss 100 Hr.氧化Mobilith SHC 2202604.214Mobilith SHC 4602603.514Mobilgrease HP 2222609.240Mobilgrease HP 222 Special2609.240Mobilux EP 0, 1, 2, 31771650Mobilgrease MP1771650Mobilgrease 1521771655April, 9939MAPPL grease presentation 1Wet Temperatu

35、re Performance DetailsBrandW aterW ash-out% LossW aterSpray-off% LossEM C O RRust Rati ng M ethod B C M obi l i th SHC 2205. 570 0 0 M obi l i th SHC 4603550 0 M obi l grease HP 2224700 0 M obi l grease HP 222 Speci al4700 0 M obi l ux EP 0, 1, 2, 38800 0 or 2 M obi l grease M P8M obi l grease 1528800 2