(4)TorqueStrengthTorqueWrench(0~150kgf)(150~750kgf)(150~300kgf)

ASMEB18.6.3/FIP1000/SAEJ78,J81,J1237,J933/ISO8987,ISO2702/DIN7500-1/IFI-113 

2.TORSIONALSTRENGTHTEST扭力強度試驗

FIP1000

ApplicableTo:AllTappingScrews.

適用范圍：所有種類的自攻螺絲

TestPurpose:Todetectpartshavinglowstrengthwhichmighttwistoffduringdrivingorseating.

測試目的：為檢查零件是否因為扭力不足而在組裝或旋緊時扭斷.

Specification:Seechartsthatfollow.如下圖示

Apparatusrequired:測試裝置

A.AppropriateSplitCollet.適當的夾具

B.ColletHolder.夾具座

C.ScrewTestingFixture.螺絲測試座

D.TorqueWrench;accuratewith+/-2%.準確度在?2%以內的扭力扳手

SampleSize(MinimumRecommended):4piecesperlot;lotsizenottoexceed250,000

抽樣數(建議最少)：每批4支,每批批量不超過250MPCS.

Procedure:測試程序

A.Placethesplitcolletintothecolletholderandscrewthefastenerintothecolletsuchthataminimumof2fullthreadsareinthecolletandaminimumof2threadsareabovethecollet.

將螺絲置入測試夾具中再將夾具放入夾具座,螺絲至少應有兩個完全牙在夾具中,兩牙在夾具上方.

B.Placethecolletholderinthescrewtestingfixtureandclampintoplace.

將夾具座固定在螺絲測試座上

C.Applytorquewithatorquewrenchuntiltheparttwistsoff.

扭轉扳手直到螺絲扭斷

D.Recordfailurevalueandcomparetotherequiredspecification.

記錄破壞值且與規(guī)范值比較

Failure:Parttwistsintwoatlessthanspecifiedminimum.

失效：螺絲扭斷值小於規(guī)范值

PossibleFailureCauses:失效可能因素

A.CoreHardnesstoolow.心部硬度太低

B.CaseHardnesstoolow.表面硬度太低

C.CaseHardnesstooshallow.有效滲碳層不足

D.Minordiametertoosmall.最小徑(牙底徑)太小

ASMEB18.6.3–2013

4.11.3TorsionalStrengthTest.Screwsshallbesecurelyclampedbysuitablemeans,suchthattheclampedportionthreadsarenotdamagedandthatatleasttwofullthreadsprojectabovetheclampingdevice,andthatatleasttwofullthreadsexclusiveofpoint,flutes,orendslot,areheldwithintheclampingdevice.(Ablindholemaybeusedinplaceofathreadedclampingdevice,providedtheholedepthsissuchastoinsurethatbreakagewilloccurbeyondthepointorthefulllengthoftheflutesorendslot).Bymeansofasuitablycalibratedtorquemeasuringdevice,torqueshallbeappliedtothescrewuntilfailureoccurs.ThetorquerequiredtocausefailureshallnolessthantheminimumvaluegiveninTable50forthetypeandsizeofscrewbeingtested.AtypicalfixtureforconductingtorsionalstrengthtestsontappingscrewsisdepictedinFig.4.

扭力強度測試：螺絲應以適當的方式安全的夾於一相配合的分離盲孔或其他裝置中以防止所夾緊的螺紋不致?lián)p毀，并且露出至少2全牙於夾具上至少2全牙(不包括尾端、割尾、或凹槽)握於夾具之中。(盲孔可以取代螺紋夾具，其孔深應能保證螺絲不會在尾端、割尾全長或尖尾位置斷裂)以一校正過且適當的扭力量測設備，測試直到斷裂為止，當斷裂時的扭力應不可小於表50之最小值。典型的扭力強度測試設備請參考圖4。

圖4-扭力強度測試參考圖

表50－自攻螺絲之扭力強度要求

–2000

3.3TorsionalStrengthTestforAllTypesofScrews.Theshankofthesamplescrew(coatedoruncoated,asreceived)shallbesecurelyclampedinamating,split,blindholedie(seeFig.1),orotherequivalentmeans,suchthatthefollowingrequirementsaremet:

所有類型之螺絲的扭力強度測試：將螺絲（接收時有涂層或無涂層）的桿部安全的夾在一個相配合的分離盲孔模具(參閱圖1)，或其他相同裝置中，并滿足下列規(guī)定：

(a)theclampedportionofthethreadsisnotdamaged

被夾部位的螺紋不能損傷

(b)atleasttwofull-formthreadsprojectabovetheclampingdevice

至少2全牙突出於夾具上方

(c)atleasttwofull-formthreadsexclusiveofthepointtaperortheflutesareheldwithintheclampingdevice(ablindholemaybeusedinplaceoftheclampingdevice,providedtheholedepthensuresthatscrewbreakagewilloccurbeyondthepointtaperorthefulllengthoftheflutes)

至少2全牙(不包括尾端、割尾、或凹槽)夾在夾具之中。(盲孔可以取代夾緊裝置，其孔深應能保證螺絲不會在尾端、割尾全長或尖尾位置斷裂)

Bymeansofasuitablycalibratedtorque-measuringdevice,torqueshallbeappliedtothescrewuntilfailureoccurs.ThetorquerequiredtocausefailureshallequalorexceedtheminimumvaluespecifiedinTable4forthetypeandsizeofscrewbeingtested.

以一校正過之適當的扭力量測設備，測試螺絲直到產生斷裂。當斷裂時的扭力應不可小於表4規(guī)定之最小值。

FIG.1TYPICALTORSIONALSTRENGTHTESTFIXTURE

表4－自攻螺絲之扭力強度要求

SAEJ78-2013SteelSelf-DrillingTappingScrews鋼鐵自鉆螺絲

(IFI113與SAEJ78完全相同)

5.1TorsionalStrength—ScrewsshallnotfailwiththeapplicationofatorquelessthanthetorsionalstrengthtorquespecifiedinTable5,whentestedinaccordancewith5.1.1.

扭力強度：當依據5.1.1段所述測試時，螺絲扭斷時的扭力強度應不能小於表5所列的數值。

5.1.1TORSIONALSTRENGTHTEST—Thesamplescrewshallbesecurelyclampedbysuitablemeans(Figure5)suchthatthethreadsintheclampedlengtharenotdamaged,andthatatleasttwofullthreadsprojectabovetheclampingdevice,andthatatleasttwofullthreadsexclusiveofpoint,flutes,orthreadcuttingslot,areheldwithintheclampingdevice.Bymeansofasuitablycalibratedtorquemeasuringdevice,torqueshallbeappliedtothescrewuntilfailureofthescrewoccurs.Thetorquerequiredtocausefailureshallberecordedasthetorsionalstrengthtorque.

扭力強度測試：螺絲樣品應安全的被夾緊於適當的夾座(圖5)以防止螺絲夾緊長度部位的螺紋損傷，并且露出至少2個全牙於夾具上，至少2個全牙握於夾具之中但不包括尾端、凹槽、或割溝螺紋在內。以一校正過適合的扭力設備測試直到斷裂，斷裂時所記錄的扭力就是扭力強度扭力。

表5－TypeBSD與TypeCSD自鉆螺絲的機械性與功能性要求

SAEJ81-2012ThreadRollingScrews螺紋滾牙螺絲

3.3.3TORSIONALSTRENGTH—ScrewsshallnotfailwiththeapplicationofatorquelessthanthetorsionalstrengthtorquespecifiedinTables5Aand5B,whentestedinaccordancewith4.5.

扭力強度：依據4.5段所述測試時，螺絲扭斷時的扭力強度不能小於表5所列的數值。

4.5TorsionalStrengthTest—Thesamplescrewshallbesecurelyclampedbysuitablemeans(Figure2)suchthatthethreadsintheclampedlengtharenotdamaged,andthatatleasttwofullthreadsprojectabovetheclampingdevice,andthatatleasttwofullthreadsexclusiveofpoint(2to31/2threadpitches)areheldwithintheclampingdevice.Ablindholemaybeusedinplaceofathreadedclampingdevice,providedtheholedepthsissuchastoinsurethatbreakagewilloccurbeyondthepoint(2to31/2threadpitches).Bymeansofasuitablycalibratedtorque-measuringdevice,torqueshallbeappliedtothescrewuntilfailureofthescrewoccurs.Thetorquerequiredtocausefailureshallberecordedasthetorsionalstrengthtorque.

扭斷強度測試：螺絲樣品應以適當的方式牢固的夾緊(圖2)以防止在夾具中的螺紋不被損傷，并且露出至少2個完全牙在夾具上，以及至少2個完全牙(不包括2-3.5P的尾端在內)握於夾具之中。一種盲孔可以使用來取代螺紋夾具，所提供之孔深需能確保斷裂不會產生在尾端(2-3.5P)處。以一支校正過的適當扭力設備測試直到斷裂。失效的扭力應被記錄并作為扭斷強度扭力。

4.10TorqueWrenches—Torquewrenchesusedinalltestsshallbeaccuratewithin±2%ofthemaximumofthespecifiedtorquerangeofthewrench.Alternatively,atorque-sensingpowerdeviceofequivalentaccuracymaybeused.

扭力扳手：測試時使用的所有扭力扳手，其準確度應在扳手最大扭力范圍的±2%之內。此外擁有相同準確度的扭力感應動力裝置也可被使用。

表5－螺紋滾牙螺絲的機械性能與功能性要求 

SAEJ933-2013MechanicalandQualityRequirementsforTappingScrews自攻螺絲的機械性與品質要求

3.3TorsionalStrengthTest—Shankofsamplescrew(coatedoruncoated,asreceived)shallbesecurelyclampedinamating,split,blind-holedie(Figure1)orothermeans,suchthattheclampedportionofthethreadsisnotdamagedandatleasttwofullthreadsprojectabovetheclampingdeviceandatleasttwofullformthreadsexclusiveofpoint,flute(s),orendslotareheldwithintheclampingdevice.(Ablindholemaybeusedinplaceoftheclampingdevice,providingtheholedepthissuchastoinsurethatthebreakagewilloccurbeyondthepoint,orthefulllengthoftheflute(s)orendslot.)Bymeansofasuitablycalibratedtorquemeasuringdevice,applytorquetothescrewuntilfailureoccurs.ThetorquerequiredtocausefailureshallequalorexceedtheminimumvalueshowninTable2forthetypeandsizeofscrewbeingtested.

扭力強度測試：螺絲樣品的桿部(接收時是電鍍或未電鍍)應被穩(wěn)固的夾於一相配合的分開盲孔中(圖1)或用其他方式，使被夾緊的螺紋部分不受到損傷，并且露出至少2個全牙於夾具上及至少2個全牙(不包括尾端、割尾或末端)握於夾具之中。(一種盲孔可以用來取代夾具，其孔深應能保證螺絲不會在尾端、割尾全長、或尖尾位置斷裂)。以一支校正過且適當的扭力量測設備，施加扭力於螺絲上直到斷裂為止，斷裂時的扭力應等於或大於表2所列的最小值。

表2－自攻螺絲的最小扭力強度要求

SAEJ1237-2001MetricThreadRollingScrews公制螺紋滾牙螺絲

3.5.3TORSIONALSTRENGTH—Type2?screwsshallnotfailwiththeapplicationofatorquelessthanthetorsionalstrengthtorquespecifiedinTable6whentestedinaccordancewith4.5.

扭力強度：當依據4.5段測試時，Type2?螺絲扭斷時的扭力強度應不能小於表6所列的數值。

表6－Type2?螺紋滾成螺絲的機械性要求

4.5TorsionalStrengthTest—Thesamplescrewshallbesecurelyclampedbysuitablemeans(Figure3)suchthatthethreadsintheclampedlengtharenotdamaged,andthatatleasttwofullthreadsprojectabovetheclampingdevice,andthatatleasttwofullthreadsexclusiveofpoint(2to3.5threadpitches)areheldwithintheclampingdevice.Ablindholemaybeusedinplaceofathreadedclampingdevice,providedtheholedepthissuchastoinsurethatbreakagewilloccurbeyondthepoint(2to3.5threadpitches).Bymeansofasuitablycalibratedtorquemeasuringdevice,torqueshallbeappliedtothescrewuntilfailureofthescrewoccurs.Thetorquerequiredtocausefailureshallberecordedasthetorsionalstrengthtorque.

扭力強度測試：螺絲樣品應安全的被夾緊於適當的夾座(圖3)以防止被夾緊處的螺紋不會損傷，并且露出至少2個全牙於夾具上，至少2個全牙(不包括尾端在內的2到3.5個牙距)握於夾具之中。盲孔可以取代螺紋夾具，所提供之孔深能確保在尾端之後(2到3.5牙距)斷裂。以一校正過適合的扭矩量具測試直到斷裂，當斷裂時所記錄的扭矩就是扭力強度扭矩。

ISO2702-2011Heat-treatedsteeltappingscrews-Mechanicalproperties

熱處理鋼制自攻螺絲之機械性質

4.2.2Torsionalstrength.Tappingscrewsshallhaveatorsionalstrengthsuchthatthetorquenecessarytocausefailure,whentestedinaccordancewith6.2.2,shallequalorexceedtheminimumtorquevaluesgivenintable3fortheapplicablescrewthreads.

扭力強度：當依據6.2.2段所述測試時，自攻螺絲扭斷時的扭力強度應等於或超過表3所列的數值。

6.2.2Torsionalstrengthtest.TheshankoftheSamplescrew(coatedoruncoated,asreceived)shallbeclampedinamating,split,threadeddieorotherdevicesothattheclampedportionofthescrewisnotdamagedandatleasttwofullthreadsprojectabovetheclampingdeviceandatleasttwofull-formthreadsexclusiveofpointareheldwithintheclampingdevice.Athreadedinsertwithablindholemaybeusedinplaceoftheclampingdevice(seefigure1)providedthattheholedepthissuchastoensurethatbreakagewilloccurbeyondthepoint.Bymeansofasuitablecalibratedtorque-measuringdevice(ueshallbeappliedtothescrewuntilfailureoccurs.Thescrewshallmeettheminimumtorsionalstrengthrequirementsgivenintable3.

扭力強度測試：螺絲樣品的桿部(接收時為電鍍或未電鍍)應被夾緊於相配合之分開式螺紋夾具或其他裝置中，使螺絲被夾緊的部分不會被損毀，并且露出至少2個全牙於夾具上，至少2個全牙夾在夾具之中(不包括尾端)。盲孔可以取代螺紋夾具(圖1)，所提供之孔深須能確保不在尾端斷裂。以一校正過且適合的扭力量測設備(參考ISO898-7)施予扭力測試直到斷裂為止，螺絲應符合表3的最小扭力強度要求。

表3–扭力強度

DIN7500-1-2009ThreadrollingscrewsforISOmetricthread–Part1:TechnicaldeliveryconditionsforcasehardenedandtemperedScrews

ISO公制滾牙螺絲–第一部份：滲碳與回火螺絲之交貨技術條件

5.4Torsionaltest.Thescrewtobetestedshallbesecurelyclampedintoasuitabledevice(asspecifiedinDINEN20898-7),withatleasttwofullthreadsprojectingabovethedeviceandatleasttwofullthreads,excludingthetopthreads,heldintheclampingdevice.Usingasuitablycalibratedtorque-measuringdevice,torqueshallbeappliedtothescrewuntilfailureoccurs.ThebreakingtorqueshallbeequaltoorhigherthantheminimumbreakingtorquespecifiedinTable3.

扭力測試：螺絲樣品應被放進適當的裝置中(參閱DINEN20898-7)穩(wěn)固的夾緊，及最少2個完整螺紋露出在夾具上方，和最少2個完整螺紋(排除尾端)握於夾具內。使用一經校正過的適當扭力量測設備將螺絲扭至產生破斷。破斷扭力值應被記錄，且破斷扭力應等於或大於表3所規(guī)定的最小破斷扭力。

表3-機械和功能性要求

6Torquemeter.Atorquemetershallbeusedformeasuringthetorquesoccurringduringthetorsionalanddriveabilitytest.Thetorquemetertobeusedshallbeatorquewrenchoramechanicallydriventestinginstrumentwithalimitoferrornotexceeding2%oftheupperlimitofthegiventorquerange(ultimatevalueofthemeasuringrange).Inarbitrationcases,thedeviceshallbechosensothatallvaluescanbereadoffintheupperhalfofthemeasuringrange.

扭力計：一個扭力計應被用來量測扭力和旋入性產生時的測試。扭力計被使用時，應有一個扳手或機械性驅動測試裝置，及其誤差的界限不可超過2%的最大的扭力范圍(量測范圍的極限值)。在仲裁時，該裝置應被選擇，使所有的值可以在量測范圍的上半部被讀出。