Abstract:
The inventive steel for mechanical parts is characterised by the composition thereof expressed in the following percentages by weight: 0.19 % = C = 0.25 %; 1.1 % = Mn = 1.5 %; 0.8 % = Si = 1.,2 %; 0.01 % = S = 0.09 %; traces = P = 0.025 %; traces = Ni = 0.25 %; 1 % = Cr = 1.4 %; 0.10 % = Mo = 0,25 %; traces = Cu = 0.30 %; 0.01 % = Al = 0.045 %; 0.010 % = Nb = 0.045 %; 0.0130 % = N = 0.0300 %; optionally traces = Bi = 0.10 % and/or traces = Pb = 0.12 % and/or traces = Te = 0.015 % and/or traces = Se = 0.030 % and/or traces = Ca = 0.0050 %. The rest being iron and impurities resulting from preparation, a chemical composition being adjusted in such a way that mean values J 3m , J 11m , J 15m et J 25m of five Jominy tests are such as a = | J 11m - J 3m x 14/22 - J 25m x 8/22 |= 2.5 HRC; and ß = J 3m - J 15m = 9 HRC. A method for producing a mechanical part from said steel and the thus obtainable mechanical part are also disclosed.
Abstract translation:用于机械部件的本发明钢的特征在于其组成以下列重量百分比表示:0.19%= C = 0.25%; 1.1%= Mn = 1.5%; 0.8%= Si = 1..2%; 0.01%= S = 0.09%; 痕量= P = 0.025%; 痕量= Ni = 0.25%; 1%= Cr = 1.4%; 0.10%= Mo = 0.25%; 痕量= Cu = 0.30%; 0.01%= Al = 0.045%; 0.010%= Nb = 0.045% 0.0130%= N = 0.0300%; 可选的迹线= Bi = 0.10%和/或迹线= Pb = 0.12%和/或迹线= Te = 0.015%和/或迹线= Se = 0.030%和/或迹线= Ca SUB> = 0.0050%。 其余为铁和由制备产生的杂质,化学成分以这样的方式调节,即平均值J 3m,J 11m,J 15m / 五个Jominy测试中的等于25m SUB>如a = | J 11m - J 3m x 14/22 -J 25m x 8/22 | = 2.5HRC; 并且ß= J 3m -J 15m = 9 HRC。 还公开了从所述钢和由此获得的机械部件制造机械部件的方法。
Abstract:
Un procedimiento de fabricación de una pieza mecánica de acero, en donde la composición de acero es, en porcentaje ponderales:-0,12 menor o igual C menor o igual 0,30%, -0,8 menor o igual Si menor o igual 1,5% -1,0 menor o igual Mn menor o igual 1,6% -0 menor igual Mo menor igual 0,30% -0 menor igual Ni menor igual 0,6%, 0 menor o igual Al menor igual 0,06% 0 menor o igual Cu menor igual 0,30% -0 menor igual S menor igual 0,10% -0menor igual P menor igual 0,03% -0 menor igual Nb menor igual 0,050% el resto es hierro e impurezas que resultan de la elaboración, y en donde dicha pieza sufre una cementación a baja presión o un carbonitruración a baja presión. Una pieza mecánica así obtenida.
Abstract:
Steel comprises specified amounts of carbon, silicon, manganese, chromium, molybdenum, nickel, aluminum, copper, sulfur, phosphorus, niobium and the rest is iron and impurities. A steel for mechanical components has the following composition (by wt. %): (a) 0.12