【正文】 ick90120105150175689079150175116302121302121302159352248352B68C32B69C32B69C32B84C38C24C38備注：A：For Grades O，A，and B a sulfur content of % max is acceptable with the purchasers approval.譯文：O，%。B: Acid Bessemersteel only. 譯文：僅僅針對耐腐蝕的碳鋼。C: For Grades D and DH a sulfur content of % is acceptable, provided the manganese is % min. 譯文：%,%.1: Nuts made in accordance to the requirements of specification ASTM A194/A194M Grade 2 or Grade2H,page B126,and marked with their grade symbol are acceptable equivalents for Grades C and D nuts. When A194 zinc coated in inch series nuts are supplied, the zinc coating, lubrication and rotational capacity testing shall be in accordance with Specification ASTM A563. 譯文：螺帽的生產(chǎn)要符合ASTM A194/A194M中的有關(guān)要求,2級和2H等級與C級和D級等同采用并要有明確的標(biāo)記在螺帽上。鍍鋅螺帽的外觀尺寸參照ASTM A194中的有關(guān)規(guī)定,其機(jī)械性質(zhì)參照ASTM A563中的有關(guān)規(guī)定.2: Nuts made in accordance with the requirements of Specification A194/A194M Grade 2H,and marked with its grade symbol are an acceptable equivalent for Grade DH nuts When ASTM A194 zinc coated inch series nuts are supplied the zinc coating overtapping lubrication capacity testing shall be in accordance with Specification ASTM A563. 譯文：DH螺帽等同A194中的2H螺帽,并要求有標(biāo)記在上面,其尺寸參照ASTM A194的規(guī)定,其機(jī)械性能參照ASTM A563.英制螺帽ASTM A194的化學(xué)成份和機(jī)械性質(zhì)：GradeSymbolMaterialCarbonManganesePhosphorusSulfurSiliconChromiumNickelMolybdenumTitaniumColumbiumand TantalumSeleniumOtherElements1碳鋼2和2HM和2H碳鋼4碳鉬3AISI5016AISI4106FAISI4166FAISI41428,8CAISI3048C,8CAAISI347Min10 8M,8MAAISI3168T,8TAAISI321承接前頁：GradeSymbolMaterialCarbonManganesePhosphorusSulfurSiliconChromiumNickelMolybdenumTitaniumColumbiumand TantalumSeleniumOtherElements8F,8FA8F,8FA8P,8PA8N,8NANi 8LN,8LNANi 8MN,8MNANi 8MLN,8LMNANi 8R,8RA.Ni 8S,8SA8MLCuN,8MLCuNA9C,9CA 20. 16Mechanical Requirements機(jī)械性質(zhì)Grade of NutStyle of NutProof Load StressksiCompleted Nuts RockwellSample Nut after Treatment as BrinellC ScaleB ScaleBrinell HardnessRockwell Hardness BGrade1Heavy hexHex130120121min70min121HB min70HRB minGrade2,2HM,6,6F,7MHeavy hexHex1501352483522438179HB min89HRB minGrade2H,3,4,716Heavy hexHex1751502483522438201HB min94HRB minAll Type of Grade8Grades 9C and 9CAHeavy hexHex80751261926090注：最大硬度僅對經(jīng)熱處理的螺母或規(guī)格太大而不能進(jìn)行保證載荷試驗(yàn)的螺母，才是強(qiáng)制性的；對其它螺母不是強(qiáng)制性的，是指導(dǎo)性的。對不淬火回火的，而又能滿足保證載荷試驗(yàn)的螺母，最低硬度應(yīng)不作為拒收依據(jù)。保證載荷的應(yīng)力面積AS按下式計算：AS=л/4（d2/2+ d3/2）178。式中：d2外螺紋中徑的基本尺寸（√3p/2，mm；d3外螺紋小徑的基本尺寸（d1）減去螺紋原始三角形高度（H）的1/6值，既：d3= d1H/6 mmH螺紋原始三角形高度（H=）mm；此時牙山角度為60度，（H=）mm；此時牙山角度為55度P螺距，mm； Л圓周率，л=注 螺帽成型最小孔徑的計算為：規(guī)格2H1（）機(jī)械性能測試方法:(1) 安全負(fù)荷測試:將螺帽裝在芯軸(芯軸硬度≥45HRC)上,施加一定的荷重,并持續(xù)1015S,施加荷重時速率不得超過3mm/min,螺帽應(yīng)能承受該荷重而不得脫扣或斷裂,卸載后,應(yīng)能用手將螺帽旋出,或借助扳手松開螺帽,但不得超過半扣(半牙),若心軸損壞,則試驗(yàn)作廢(2) 硬度測試:常規(guī)檢測應(yīng)在一個承面上進(jìn)行,則在對角處各測一點(diǎn)。 如屬經(jīng)過熱處理之螺帽,則在對角處各測3點(diǎn)。仲裁方法則是通過螺母軸心線的縱向截面上,并盡量靠近螺紋大徑處進(jìn)行硬度試驗(yàn)并采用HV30的試驗(yàn)力.鋼結(jié)構(gòu)采用的標(biāo)準(zhǔn):鋼結(jié)構(gòu)之螺帽采用的標(biāo)準(zhǔn): GB 123GB 363GB 、JIS ??0JIS B1186鋼結(jié)構(gòu)之螺帽的機(jī)械性能：表四:GB1231/ GB3633性能等級GB1231GB3633M12M16M20M22M24M27M30M16M20M22M24硬度10HHRB98HRC28/HV30222HV30274HRB98HRC28/HV30222HV302748HHRB95HRC22/HV30206HV30237保征載荷10H877001630002550003150003670004770005830001630002550003150003670008H70000130000203000251000293000381000466000表四: JIS??09/ JISB1186性能等級JISB1186JIS??09M12M16M20M22M24M27M30M16M20M22M24硬度10HHRB95HRC35HRB95HRC358HHRB85HRB100保征載荷10H850001570002450002030003530004590005610001540002403002971003462008H68000126000196000243000283000368000449000機(jī)械性能之檢測：硬度測試見QET61，保證載荷測試見QET66。鋼結(jié)構(gòu)螺栓: GB 1231/JIS B1186螺紋規(guī)格M12M16M20M22M24M27M30材料硬度抗拉收縮伸長沖擊公稱應(yīng)力截面積As,mm157245303353459561GB1231性能等級S拉力載荷N8770010450016300019500025500030400031500037600036700043800047700056900058300069600020MnTiB35VB333910401240421059S700008680013000016200020300025200025100031200029300036400038100047300046600057800040B45/3524318301030451278JISB1186性能等級F8T引張荷重KN(kgf)68(6934)126(12848)196(19987)243(24779)283(28858)368(37526)449(45785)/183180010004516/F10T85(8668)157(16010)245(24983)303(30898)353(35996)459(46805)561(57206)/2738100012004014/F11T93(9483)173(17641)270(27532)334(34059)389(39667)505(51496)618(63019)/3040110013004014/鋼結(jié)構(gòu)螺栓: GB 3633/JIS II09螺紋規(guī)格M16M20M22M24硬度材料抗拉收縮伸長沖擊公稱應(yīng)力截面積As,mm157245303353HRCHVGB3633性能等級S拉力載荷N16300019500025500