静态和动态扭矩

Staticvs.DynamicTorque静态和动态扭矩DynamicTorque动态扭矩DynamictorqueistheacceptedStrategyforfasteninginGeneralMotors.ThismethodisusedbytheBoschelectricwrehchesinPowertrainAssembly动态扭矩是通用汽车公司认可的拧紧方式动力总成装配线上B^Bosch电动扳手就是使用这个方法StaticTorque静态扭矩StaticTorqueisthemethodusedwhenaboltisrecheckedwithamanualtorquewrench.StaticTorqueisnottheacceptedmethodforfasteninginGeneralMotors当用手动扳手重新检测螺栓时，则采用静态扭矩，静态扭矩不是通用汽车公司认可的拧紧方式。StaticvsDynamicTorque静态和动态扭矩的比较Dynamictorqueismuchmoreaccurateandrepeatablethenstatictorque.Thereisnormallyadifferencebetweendynamictorquereadingsandstatictorquerechecks.Thedifferencedependonthecharacteristicsofeachjointandeachbolt.Factorscontributingtothisdifferenceinclude动态扭矩比静态扭矩更加准确重复性更强。动态扭矩的读数与重检静态扭矩的读数通常是不相同的.而且不同的粘结点，不同的螺栓，差别程度又有所不同。造成读数差异的主要因素包括：Softjoints(gasketsandsealers)软性粘结/点衬垫和密封圈Timeafterfastening拧紧的时间Conditionofthepart(haSiibeenrun?)工件的状态:是否已经用过乃)DonotbealarmedbyadifferencebetweenthedynamictorqueandastatiCrecheck.Thisisanormalcondition若发现动态扭矩和静态重检扭矩读数不同，请不要紧张.这是正常现象.Sinceastaticrecheckislessaccuratethantheoriginaldynamictorqueandtherecheckdisturbsthegoodjoin，titisnotagoodpracticetorecheckgoodpar.tSStaticrechecksshouldonlybeusedduringrepa，irsrejectedpartsanalysisoraspartofateardownauditDOnotstaticallyrecheckgoodenginesortransmissions.由于静态重检不如原先的动态扭矩准确而且还会损坏好的粘结点，所以对合格工件进行重新检测不是一个好方法静态重检应只限于工件返修工件故障分析或工件拆卸检查.不要对好的发动机或变速箱进行静态检查.Adatabaseofstaticvsdynamicvalueswillbedevelopedaspartofthe

teardownauditsbythequalitydepartment.ThisistheonlyreliablewaytogathersufficientdatatounderstandthisproblemarryGallagherChrisSchaidtQuality通过工件拆卸检查，质量部将制定一张静态和动态数值对比表这是唯一一个较为可靠的数据收集方法，能帮助我们更好地理解问题.arryGallagherChrisSchaidtQualityPlanningEngineeringSteveIvesEngineProductEngineering发动机产昌工程规划工程SteveIvesEngineProductEngineering发动机产昌工程EdHanTransmissionProductEngineering变速莅产品工程扭矩枪紧固螺钉通过传感器显示的动态扭肺你用扭力板手检测其