钻铤的尺寸规格.doc

表1 钻铤的尺寸规格钻铤螺纹型号外径D内径d长度Lmm台肩倒角直径DFmm参考的弯曲强度比mminmminNC23-3179.43 1/831.81 1/4915076.22.57:1NC26-35(2 3/8IF)88.93 1/238.11 1/2915082.92.42:1NC31-41(2 7/8IF)104.84 1/850.829150100.42.43:1NC35-47120.74 3/450.829150114.72.58:1NC3850(3 1/2IF)127.0557.22 1/49150121.02.38:1NC44-60152.4657.22 1/49150或9450144.52.49:1NC44-62158.86 1/457.22 1/49150或9450149.22.91:1NC46-62(4IF)158.86 1/471.42 13/169150或9450150.02.63:1NC46-65(4IF)165.16 1/257.22 1/49150或9450154.82.76:1NC46-65(4IF)165.16 1/271.42 13/169150或9450154.83.05:1NC46-67(4IF)171.46 3/457.22 1/49150或9450159.53.18:1NC50-67(4 1/2IF)171.46 3/471.42 13/169150或9450159.52.37:1NC50-70(4 1/2IF)177.8757.22 1/49150或9450164.72.54:1NC50-70(4 1/2IF)177.8771.42 13/169150或9450164.72.73:1NC50-72(4 1/2IF)184.27 1/471.42 13/169150或9450169.53.12:1NC50-77196.87 3/471.42 13/169150或9450185.32.70:1NC50-80203.2871.42 13/169150或9450190.13.02:16 5/8REG209.68 1/471.42 13/169150或9450195.72.93:1NC61-90228.6971.42 13/169150或9450212.73.17:17 5/8REG241.39 1/276.239150或9450223.82.81:1NC70-97247.69 3/476.239150或9450232.62.57:1NC70-100254.01076.239150或9450237.32.81:18 5/8REG279.41176.239150或9450266.72.84:1机械性能(钻铤）外径OD屈服强度 0.2 Mpa抗拉强度b Mpa伸长率 4%布氏硬度HB夏比冲击功AKVJmmin inch79.4-171.43 1/8-6 3/475896513285-34154177.8-279.47-11689930螺纹连接部位应力分散槽钻铤螺纹类型内螺纹台肩面至后一牙长度1.59mm内螺纹圆柱段直径Dcb+0.40,-0mm内螺纹圆柱段后的锥孔锥度20.83mm/m外螺纹槽直径DG+0,+0-0.79mm可替代内螺纹台肩面至力分散槽长度LRG+0-3.18mmNC3582.682.15166.6782.1585.73NC38(3 1/2IF)88.988.11166.6789.3092.08NC44101.6101.60166.67106.36104.78NC46(4IF)101.6106.76166.67109.93104.78NC50(4 1/2IF)101.6117.48166.67120.65104.78NC56114.3121.84250.00134.14117.48NC61127.0132.95250.00149.25130.18NC70139.7152.00250.00171.05142.886 5/8REG114.3134.14166.67137.72117.487 5/8REG120.7133.35250.00162.72123.838 5/8REG123.8149.25250.00184.94127.00注：NC23、26、31与2 3/8IF螺纹因壁薄而不带连接部位应力分散模槽