自攻螺丝自攻螺丝-扭力强度

精心整理精心整理精心整理(4)TorqueStrengthTorqueWrench(0~150kgf)(150~750kgf)购买(150~300kgf)ASMEB18.6.3/FIP1000/SAEJ78,J81,J1237,J933/ISO898-7,ISO2702/DIN7500-1/IFI-1132.TORSIONALSTRENGTHTEST扭力强度试验FIP1000ApplicableTo:AllTappingScrews.适用范围：所有种类的自攻螺丝TestPurpose:Todetectpartshavinglowstrengthwhichmighttwistoffduringdrivingorseating.测试目的：为检查零件是否因为扭力不足而在组装或旋紧时扭断.Specification:Seechartsthatfollow.如下图示Apparatusrequired:测试装置A.AppropriateSplitCollet.适当的夹具B.ColletHolder.夹具座C.ScrewTestingFixture.螺丝测试座D.TorqueWrench;accuratewith+/-2%.准确度在?2%以内的扭力扳手SampleSize(MinimumRecommended):4piecesperlot;lotsizenottoexceed250,000抽样数(建议最少)：每批4支,每批批量不超过250MPCS.Procedure:测试程序A.Placethesplitcolletintothecolletholderandscrewthefastenerintothecolletsuchthataminimumof2fullthreadsareinthecolletandaminimumof2threadsareabovethecollet.将螺丝置入测试夹具中再将夹具放入夹具座,螺丝至少应有两个完全牙在夹具中,两牙在夹具上方.B.Placethecolletholderinthescrewtestingfixtureandclampintoplace.将夹具座固定在螺丝测试座上C.Applytorquewithatorquewrenchuntiltheparttwistsoff.扭转扳手直到螺丝扭断D.Recordfailurevalueandcomparetotherequiredspecification.破坏值且与规范值比较Failure:Parttwistsintwoatlessthanspecifiedminimum.失效：螺丝扭断值小於规范值PossibleFailureCauses:失效可能因素A.CoreHardnesstoolow.心部硬度太低B.CaseHardnesstoolow.面硬度太低C.CaseHardnesstooshallow.有效渗碳层不足D.Minordiametertoosmall.最小径(牙底径)太小ASMEB18.6.3–20134.11.3TorsionalStrengthTest.Screwsshallbesecurelyclampedbysuitablemeans,suchthattheclampedportionthreadsarenotdamagedandthatatleasttwofullthreadsprojectabovetheclampingdevice,andthatatleasttwofullthreadsexclusiveofpoint,flutes,orendslot,areheldwithintheclampingdevice.(Ablindholemaybeusedinplaceofathreadedclampingdevice,providedtheholedepthsissuchastoinsurethatbreakagewilloccurbeyondthepointorthefulllengthoftheflutesorendslot).Bymeansofasuitablycalibratedtorquemeasuringdevice,torqueshallbeappliedtothescrewuntilfailureoccurs.ThetorquerequiredtocausefailureshallnolessthantheminimumvaluegiveninTable50forthetypeandsizeofscrewbeingtested.AtypicalfixtureforconductingtorsionalstrengthtestsontappingscrewsisdepictedinFig.4.扭力强度测试：螺丝应以适当的方式安全的夹於一相配合的分离盲孔或其他装置中以防止所夹紧的螺纹不致损毁，并且露出至少2全牙於夹具上至少2全牙(不包括尾端、割尾、或凹槽)握於夹具之中。(盲孔可以取代螺纹夹具，其孔深应能保证螺丝不会在尾端、割尾全长或尖尾位置断裂)以一校正过且适当的扭力量测设备，测试直到断裂为止，当断裂时的扭力应不可小於表50之最小值。典型的扭力强度测试设备请参考图4。图4-扭力强度测试参考图表50－自攻螺丝之扭力强度要求 螺丝规格 最小扭力强度,lb-in. TypeA TypeAB,B,BF,BP,BT TypeC,D,F,G,T TypeTRS 粗牙 细牙 粗牙 细牙 #2 4 4 5 6 6 … #3 9 9 9 10 10 … #4 12 13 13 15 14 … #5 18 18 18 20 22 … #6 24 24 23 27 24 … #7 30 30 …… …… … … #8 39 39 42 47 48 … #10 48 56 56 74 65 74 #12 83 88 93 108 93 … #14 125 … … … … … 1/4 … 142 140 179 156 … #16 152 … … … … … #18 196 … … … … … 5/16 … 290 306 370 330 … #20 250 … … … … … #24 492 … … … … … 3/8 … 590 560 710 600 … 7/16 … 620 700 820 840 … 1/2 … 1020 1075 1285 … 1080–20003.3TorsionalStrengthTestforAllTypesofScrews.Theshankofthesamplescrew(coatedoruncoated,asreceived)shallbesecurelyclampedinamating,split,blindholedie(seeFig.1),orotherequivalentmeans,suchthatthefollowingrequirementsaremet:所有类型之螺丝的扭力强度测试：将螺丝（接收时有涂层或无涂层）的杆部安全的夹在一个相配合的分离盲孔模具(参阅图1)，或其他相同装置中，并满足下列规定：(a)theclampedportionofthethreadsisnotdamaged被夹部位的螺纹不能损伤(b)atleasttwofull-formthreadsprojectabovetheclampingdevice至少2全牙突出於夹具上方(c)atleasttwofull-formthreadsexclusiveofthepointtaperortheflutesareheldwithintheclampingdevice(ablindholemaybeusedinplaceoftheclampingdevice,providedtheholedepthensuresthatscrewbreakagewilloccurbeyondthepointtaperorthefulllengthoftheflutes)至少2全牙(不包括尾端、割尾、或凹槽)夹在夹具之中。(盲孔可以取代夹紧装置，其孔深应能保证螺丝不会在尾端、割尾全长或尖尾位置断裂)Bymeansofasuitablycalibratedtorque-measuringdevice,torqueshallbeappliedtothescrewuntilfailureoccurs.ThetorquerequiredtocausefailureshallequalorexceedtheminimumvaluespecifiedinTable4forthetypeandsizeofscrewbeingtested.以一校正过之适当的扭力量测设备，测试螺丝直到产生断裂。当断裂时的扭力应不可小於表4规定之最小值。FIG.1TYPICALTORSIONALSTRENGTHTESTFIXTURE表4－自攻螺丝之扭力强度要求 TypeAB,B,BF,BT螺丝 TypeD,F,T螺丝 螺丝规格 扭力,Nm 螺丝规格 扭力,Nm 2.2x0.8 0.4 M2x0.4 0.5 2.9x1 1.5 1.1 3.5x1.3 2.7 M3x0.5 2.0 4.2x1.4 4.4 M3.5x0.6 3.1 4.8x1.6 6.3 M4x0.7 4.6 5.5x1.8 9.9 M5x0.8 9.4 6.3x1.8 16 M6x1 16 8x2.1 33 M8x1.25 40 9.5x2.1 67 M10x1.5 78SAEJ78-2013SteelSelf-DrillingTappingScrews钢铁自钻螺丝(IFI113与SAEJ78完全相同)5.1TorsionalStrength—ScrewsshallnotfailwiththeapplicationofatorquelessthanthetorsionalstrengthtorquespecifiedinTable5,whentestedinaccordancewith5.1.1.扭力强度：当依据5.1.1段所述测试时，螺丝扭断时的扭力强度应不能小於表5所列的数值。5.1.1TORSIONALSTRENGTHTEST—Thesamplescrewshallbesecurelyclampedbysuitablemeans(Figure5)suchthatthethreadsintheclampedlengtharenotdamaged,andthatatleasttwofullthreadsprojectabovetheclampingdevice,andthatatleasttwofullthreadsexclusiveofpoint,flutes,orthreadcuttingslot,areheldwithintheclampingdevice.Bymeansofasuitablycalibratedtorquemeasuringdevice,torqueshallbeappliedtothescrewuntilfailureofthescrewoccurs.Thetorquerequiredtocausefailureshallberecordedasthetorsionalstrengthtorque.扭力强度测试：螺丝样品应安全的被夹紧於适当的夹座(图5)以防止螺丝夹紧长度部位的螺纹损伤，并且露出至少2个全牙於夹具上，至少2个全牙握於夹具之中但不包括尾端、凹槽、或割沟螺纹在内。以一校正过适合的扭力设备测试直到断裂，断裂时所记录的扭力就是扭力强度扭力。表5－TypeBSD与TypeCSD自钻螺丝的机械性与功能性要求 公称螺丝尺寸 最小扭力强度,lb-in TypeBSD(宽牙) TypeCSD(机械牙) #4 14 14 #6 24 24 #8 42 48 #10 61 65 #12 92 100 1/4 150 156SAEJ81-2012ThreadRollingScrews螺纹滚牙螺丝3.3.3TORSIONALSTRENGTH—ScrewsshallnotfailwiththeapplicationofatorquelessthanthetorsionalstrengthtorquespecifiedinTables5Aand5B,whentestedinaccordancewith4.5.扭力强度：依据4.5段所述测试时，螺丝扭断时的扭力强度不能小於表5所列的数值。4.5TorsionalStrengthTest—Thesamplescrewshallbesecurelyclampedbysuitablemeans(Figure2)suchthatthethreadsintheclampedlengtharenotdamaged,andthatatleasttwofullthreadsprojectabovetheclampingdevice,andthatatleasttwofullthreadsexclusiveofpoint(2to31/2threadpitches)areheldwithintheclampingdevice.Ablindholemaybeusedinplaceofathreadedclampingdevice,providedtheholedepthsissuchastoinsurethatbreakagewilloccurbeyondthepoint(2to31/2threadpitches).Bymeansofasuitablycalibratedtorque-measuringdevice,torqueshallbeappliedtothescrewuntilfailureofthescrewoccurs.Thetorquerequiredtocausefailureshallberecordedasthetorsionalstrengthtorque.扭断强度测试：螺丝样品应以适当的方式牢固的夹紧(图2)以防止在夹具中的螺纹不被损伤，并且露出至少2个完全牙在夹具上，以及至少2个完全牙(不包括2-3.5P的尾端在内)握於夹具之中。一种盲孔可以使用来取代螺纹夹具，所提供之孔深需能确保断裂不会产生在尾端(2-3.5P)处。以一支校正过的适当扭力设备测试直到断裂。失效的扭力应被记录并作为扭断强度扭力。4.10TorqueWrenches—Torquewrenchesusedinalltestsshallbeaccuratewithin±2%ofthemaximumofthespecifiedtorquerangeofthewrench.Alternatively,atorque-sensingpowerdeviceofequivalentaccuracymaybeused.扭力扳手：测试时使用的所有扭力扳手，其准确度应在扳手最大扭力范围的±2%之内。此外拥有相同准确度的扭力感应动力装置也可被使用。表5－螺纹滚牙螺丝的机械性能与功能性要求 螺丝规格 最小扭力强度 in-lb 2-56 6 3-48 10 4-40 14 5-40 22 6-32 24 8-32 48 10-24 65 1/4-20 156 5/16-18 330 3/8-16 600 7/16-14 840 1/2-13 1080SAEJ933-2013MechanicalandQualityRequirementsforTappingScrews自攻螺丝的机械性与品质要求3.3TorsionalStrengthTest—Shankofsamplescrew(coatedoruncoated,asreceived)shallbesecurelyclampedinamating,split,blind-holedie(Figure1)orothermeans,suchthattheclampedportionofthethreadsisnotdamagedandatleasttwofullthreadsprojectabovetheclampingdeviceandatleasttwofullformthreadsexclusiveofpoint,flute(s),orendslotareheldwithintheclampingdevice.(Ablindholemaybeusedinplaceoftheclampingdevice,providingtheholedepthissuchastoinsurethatthebreakagewilloccurbeyondthepoint,orthefulllengthoftheflute(s)orendslot.)Bymeansofasuitablycalibratedtorquemeasuringdevice,applytorquetothescrewuntilfailureoccurs.ThetorquerequiredtocausefailureshallequalorexceedtheminimumvalueshowninTable2forthetypeandsizeofscrewbeingtested.扭力强度测试：螺丝样品的杆部(接收时是电镀或未电镀)应被稳固的夹於一相配合的分开盲孔中(图1)或用其他方式，使被夹紧的螺纹部分不受到损伤，并且露出至少2个全牙於夹具上及至少2个全牙(不包括尾端、割尾或末端)握於夹具之中。(一种盲孔可以用来取代夹具，其孔深应能保证螺丝不会在尾端、割尾全长、或尖尾位置断裂)。以一支校正过且适当的扭力量测设备，施加扭力於螺丝上直到断裂为止，断裂时的扭力应等於或大於表2所列的最小值。表2－自攻螺丝的最小扭力强度要求 螺丝规格 最小扭力强度，lb-in TypeA TypeAB,B,BF,BG,BP和BT TypeC TypeC,D,F,G,T 粗牙 细牙 粗牙 细牙 No.2 4 4 5 6 5 6 No.3 9 9 9 10 9 10 No.4 12 13 13 15 13 15 No.5 18 18 18 20 18 20 No.6 24 24 23 27 23 27 No.7 30 30 - - - - No.8 39 39 42 47 42 47 No.10 48 56 56 74 56 74 No.12 83 88 93 108 93 108 No.14 125 - - - - - 1/4 - 142 140 179 140 179 No.16 152 - - - - - No.18 196 - - - - - 5/16 - 290 306 370 306 370 No.20 250 - - - - - No.24 492 - - - - - 3/8 - 590 560 710 560 710 7/16 - - - - - - 1/2 - - - - - -SAEJ1237-2001MetricThreadRollingScrews公制螺纹滚牙螺丝3.5.3TORSIONALSTRENGTH—Type2?screwsshallnotfailwiththeapplicationofatorquelessthanthetorsionalstrengthtorquespecifiedinTable6whentestedinaccordancewith4.5.扭力强度：当依据4.5段测试时，Type2?螺丝扭断时的扭力强度应不能小於表6所列的数值。表6－Type2?螺纹滚成螺丝的机械性要求 螺丝规格 最小扭力强度N.m M2x0.4 0.7 1.2 M3x0.5 2.2 M3.5x0.6 3.5 M4x0.7 5.2 M5x0.8 10.5 M6x1.0 17.7 M8x1.25 43.0 M10x1.5 87.0 M12x1.75 152.04.5TorsionalStrengthTest—Thesamplescrewshallbesecurelyclampedbysuitablemeans(Figure3)suchthatthethreadsintheclampedlengtharenotdamaged,andthatatleasttwofullthreadsprojectabovetheclampingdevice,andthatatleasttwofullthreadsexclusiveofpoint(2to3.5threadpitches)areheldwithintheclampingdevice.Ablindholemaybeusedinplaceofathreadedclampingdevice,providedtheholedepthissuchastoinsurethatbreakagewilloccurbeyondthepoint(2to3.5threadpitches).Bymeansofasuitablycalibratedtorquemeasuringdevice,torqueshallbeappliedtothescrewuntilfailureofthescrewoccurs.Thetorquerequiredtocausefailureshallberecordedasthetorsionalstrengthtorque.扭力强度测试：螺丝样品应安全的被夹紧於适当的夹座(图3)以防止被夹紧处的螺纹不会损伤，并且露出至少2个全牙於夹具上，至少2个全牙(不包括尾端在内的2到3.5个牙距)握於夹具之中。盲孔可以取代螺纹夹具，所提供之孔深能确保在尾端之後(2到3.5牙距)断裂。以一校正过适合的扭矩量具测试直到断裂，当断裂时所记录的扭矩就是扭力强度扭矩。ISO2702-2011Heat-treatedsteeltappingscrews-Mechanicalproperties热处理钢制自攻螺丝之机械性质4.2.2Torsionalstrength.Tappingscrewsshallhaveatorsionalstrengthsuchthatthetorquenecessarytocausefailure,whentestedinaccordancewith6.2.2,shallequalorexceedtheminimumtorquevaluesgivenintable3fortheapplicablescrewthreads.扭力强度：当依据6.2.2段所述测试时，自攻螺丝扭断时的扭力强度应等於或超过表3所列的数值。6.2.2Torsionalstrengthtest.TheshankoftheSamplescrew(coatedoruncoated,asreceived)shallbeclampedinamating,split,threadeddieorotherdevicesothattheclampedportionofthescrewisnotdamagedandatleasttwofullthreadsprojectabovetheclampingdeviceandatleasttwofull-formthreadsexclusiveofpointareheldwithintheclampingdevice.Athreadedinsertwithablindholemaybeusedinplaceoftheclampingdevice(seefigure1)providedthattheholedepthissuchastoensurethatbreakagewilloccurbeyondthepoint.Bymeansofasuitablecalibratedtorque-measuringdevice(ueshallbeappliedtothescrewuntilfailureoccurs.Thescrewshallmeettheminimumtorsionalstrengthrequirementsgivenintable3.扭力强度测试：螺丝样品的杆部(接收时为电镀或未电镀)应被夹紧於相配合之分开式螺纹夹具或其他装置中，使螺丝被夹紧的部分不会被损毁，并且露出至少2个全牙於夹具上，至少2个全牙夹在夹具之中(不包括尾端)。盲孔可以取代螺纹夹具(图1)，所提供之孔深须能确保不在尾端断裂。以一校正过且适合的扭力量测设备(参考ISO898-7)施予扭力测试直到断裂为止，螺丝应符合表3的最小扭力强度要求。表3–扭力强度 螺纹规格 最小扭力强度N.m ST2.2ST2.6ST2.9 0.450.91.5 ST3.3ST3.5ST3.9 2.02.73.4 ST4.2ST4.8ST5.5 4.46.310 ST6.3ST8ST9.5 13.630.568.0DIN7500-1-2009ThreadrollingscrewsforISOmetricthread–Part1:TechnicaldeliveryconditionsforcasehardenedandtemperedScrewsISO公制滚牙螺丝–第一部份：渗碳与回火螺丝之交货技术条件5.4Torsionaltest.Thescrewtobetestedshallbesecurelyclampedintoasuitabledevice(asspecifiedinDINEN20898-7),withatleasttwofullthreadsprojectingabovethedeviceandatleasttwofullthreads,excludingthetopthreads,heldintheclampingdevice.Usingasuitablycalibratedtorque-measuringdevice,torqueshallbeappliedtothescrewuntilfailureoccurs.ThebreakingtorqueshallbeequaltoorhigherthantheminimumbreakingtorquespecifiedinTable3.扭力测试：螺丝样品应被放进适当的装置中(参阅DINEN20898-7)稳固的夹紧，及最少2个完整螺纹露出在夹具上方，和最少2个完整螺纹(排除尾端)握於夹具内。使用一经校正过的适当扭力量测设备将螺丝扭至产生破断。破断扭力值应被记录，且破断扭力应等於或大於表3所规定的最小破断扭力。表3-机械和功能性要求 螺纹规格 最小破断扭力Nm 2 0.4 2.5 1 3 1.8 3.5 2.8 4 4.1 5 8.7 6 15 8 37 10 75 12 1336Torquemeter.Atorquemetershallbeusedformeasuringthetorquesoccurringduringthetorsionalanddriveabilitytest.Thetorquemetertobeusedshallbeatorquewrenchoramechanicallydriventestinginstrumentwithalimitoferrornotexceeding2%oftheupperlimitofthegiventorquerange(ultimatevalueofthemeasuringrange).Inarbitrationcases,thedeviceshallbechosensothatallvaluescanbereadoffintheupperhalfofthemeasuringrange.扭力计：一个扭力计应被用来量测扭力和旋入性产生时的测试。扭力计被使用时，应有一个扳手或机械性驱动测试装置，及其误差的界限不可超过2%的最大的扭力范围(量测范围的极限值)。在仲裁时，该装置应被选择，使所有的值可以在量测范围的上半部被读出。