剎車片、剎車油材料培訓

ABCofFrictionWhatisFrictionMaterial?什么是摩Howdoyoustopamovingvehicleeffectivelyandsuccessfully?Andhowdoyoubringacarfromresttomotionsmoothly?Theanswerisfrictionmaterialsmostoccasionsfrictionisinefficientandwastefulandshouldbeavoided.Butoncontrastfrictionisessentialindailylife.FrictionmaterialsappliedonautosareasDiscbrakepads盤式剎車塊Bondedbrakeshoes鼓式剎車蹄Brakelinings剎車片Clutchfacings離合器摩擦面Themostimportantrequirementsforeffectivefrictionmaterialsareas對摩擦材料最主要的摩擦性能表現(xiàn)--thecoefficientoffrictionshouldbehighandindependentof摩擦系數(shù)必須足夠高而且與溫度變化無關(guān)；highthermalstability;高的熱穩(wěn)定性--highstrengthanddistinctelasticity;強度大且富--lowwearandabrasiveness;低磨損、耐--nonoisedevelopment.無噪音產(chǎn)生Forfrictionmaterialsappliedtoautos,therequirementabovecould使用于汽車的摩擦材料，其主要的摩擦性能可以按照以下方式來describedinanother--thebrakingperformanceshouldbeeffectiveandstableindifferent在不同的環(huán)境下，制動性能必須是有效的和穩(wěn)定operatingfriction:typicalpedalfeel,normal運行狀態(tài)下：良好的踏板感覺，正常車速；hotfriction:pedalfeel,inheavytraffic/高溫狀態(tài)下：踏板感覺，惡劣的交通環(huán)境/下坡coldfriction:pedalfeel,firststopinthe低溫狀態(tài)下：踏板感覺，清晨的第一腳wetfriction:pedalfeel,frictionrecoveredafterwet潮濕的狀態(tài)下：踏板感覺，在潮濕的條noorlowaggressivetomatingmaterialsdrumordisc)對對偶件損傷小或nonoiseemitting無噪音產(chǎn)Theprocessoffrictionmaterial摩擦材料制造工Thereareseveraltechnologyappliedtofrictionmaterialsmanufacturing,such目前摩擦材料制造工藝有幾種，主要如下：MoldingProcess模Drymixing干法混Wetmixing濕法混WovenandwoundProcess編織ExtrudingandRollingProcess擠DryMixingProcessisoneofthemostimportantmethodsinfrictionmaterialmanufacture.Thestepsoftheprocessare:干法混合工藝是目前最重要的制造方法之一。它是制作程序如Formulationandweighting:配料、稱Mixing: Hotpressing 外 涂 entsriveting裝配附Marking& 標示及Qualitycontrolintheproductionprocessoffriction摩擦材料制造過程的質(zhì)einspectionofraw原材料入庫WeighingandMixing配比、混料ThetechnologyespeciallyintheCriticalOperations,suchashotpressing,curingandbonding,shouldbeexactlycontrolled.Theseparametersincludetemperature,pressure,duringtime,density,clampressureetc.一些關(guān)鍵程序的技術(shù)要求，例如油壓、熱處理和粘接的工序必須特別控制。這些工序涉及的參數(shù)有：油壓溫度、油壓壓力、保壓時間、密度、卡鉗壓力等等。Thedimensionmeasurementofbacktes,shoes(websandtes)intheprocessesofpunching,shoeswelding.Andthetensilestrengthtestofwelding落料工序中的金屬背板的尺寸測量，鼓式產(chǎn)品的焊接點的拉伸強Thebondingstrengthtestofdiscpadsandbondedbrakeshoes,andtheprooftestinbondingprocess.盤式產(chǎn)品、鼓式產(chǎn)品的粘接強度檢驗以及粘接過程的檢驗Thedimensionmeasurementaftergrindingand內(nèi)外磨和鉆孔后的尺寸Theappearanceinspectionofthe產(chǎn)品外觀檢Theperformancetestespeciallyfrictionandwear,strength,density,hefinalinspection.最終產(chǎn)品性能測試，尤其是：磨損率、強度、密度、硬度Markingand標示和包裝檢Howtoevaluatetheperformanceofaspecificfriction特定配方的性能評Sampletest樣品FrictionCoefficient SAEJ661GB5763(JIS摩擦系數(shù)測 SAEJ661GB763（JISTobetestedunderconstantspeedandspecified定速變溫FrictionCoefficient摩擦系Wearthelossofthicknessandweight)磨損（厚度、重量的損失Strength:強Impactstrength沖擊強度Flexingstrength抗彎曲強度Compressstrength抗壓強度Shearstrength剪切強度Bondingstrength粘接強度Hardness:Rockwell (HRL,HRM,HRR,HRS)鉻氏硬Brinell HB不氏硬PorosityDensity密實Solutionsresistant (watersaltsolution,oilbrakefluid)各種抗性AppearanceInspection外觀AssemblyTest總成測ThermalExpansion ISO6313熱膨脹測試Compressibility ISO6310壓縮特性CorrosionTestandHumidtest抗腐DynamometerTest.臺架總成測DynamometerTestisessentialandmostimportantinR&D,andithasthefollowing 臺架總稱測試對于研發(fā)是非常關(guān)鍵的，是按照以下步驟實行Runin磨合期測試Effectivenesstest效能測試Fadetest測試Recoverytest恢復(fù)測試Weartest磨損測試ect.VehicletestandRoadtest.實車道路測AdviceonFittingNewPadsBrakesaresafety-critical.Forreasonsofsafety,allmaintenanceworkonbrakesystemsmustbecarriedoutonlybyqualifieds,anduseonlythespecialtoolsspecifiedfortherecementofbrakepads.制動蹄/塊是安全件。為了您的安全，制動器的維修必須有經(jīng)過培訓過的專業(yè)人員進行，并且應(yīng)配備的工具。Brakepadsmustberecedbyaxle.Donotuseotherbrakepadsotherthanthoseexclusivelyspecifiedfortheparticularvehicletype.同一車軸上的制動蹄/塊必須同時更換。同一型號的車型上不能使用不同的制動蹄/塊Donotbringthefrictionmaterialofthebrakepads,discs,calipersorbrakehosescontactwithgreases,oils,otherlubricantsormineral-oilbasedcleaningagents.Recethoseparts,ifnecessary.不得將制動蹄/塊、卡鉗和剎車軟管放入油脂、機油、潤滑油或其它的礦物油制成的清潔劑。如果有這種情況發(fā)生，必要時必須更換。ThestepsofdismantlingandassemblingofbrakemustbestrictlyinthelightoftheMaintenanceHandbookofspecifiedvehicletype.制動器的拆卸和安裝必須嚴格按照該型號的汽車維修手冊上的要 cementofDiscBrakePadsBrakepadsmustberecedwhentheremainingthicknessisdownto2mmoranalarmemittedfromthewearindicator.盤式剎車片的襯片厚度低于2mm Inspectingthebrakepadsandbrakedisc,thereshouldnotbeanygreaseorlubricantonthefrictionsurface.Inspectingallthecomponentsofthediscpadsincludingspacers,retainingpins,cross-leafspring,safetyclipsandwearindicatorsetc.檢查剎車片和制動盤，不得有任何的油脂或潤滑油在摩擦表面上。檢查制動盤的所有零件，包括：墊片、止動銷、十字卡簧和裝置等是否齊全。Thediscsmustalsoberecedwhenthewearofthicknessisexceeded1mm,orthereisscoring,crackorgrooveonthematingsurface.如果剎車盤的厚度小于1mm 或其表面發(fā)現(xiàn)有劃傷裂縫和凹槽則必須更換剎車盤。Theoperatingofdismantlinga