| 摘要 |
FIELD: ferrous metallurgy; the steel for manufacture of the products by the rotary swaging. ^ SUBSTANCE: the invention is pertaining to the field of the ferrous metallurgy, in particular, to the steel intended for manufacture of the products using the automatic production line by the method of the rotary swaging. The invention presents the steel for manufacture of the products by the rotary swaging, which contains (in mass %): carbon - 0.22-0.26, silicon - 0.17-0.29, manganese - 0.50-0.80, chromium - 0.70-1.10, copper - 0.1-0.30, nitrogen - 0.005-0.020, aluminum - 0.01-0.05, nickel - no more than 0.20, sulfur - no more than 0.025, phosphor - no more than 0.025, iron - the rest. At that the total contents of manganese, phosphor and copper - no more than 0.87, the total content of carbon and nitrogen - no more than 0.265, the content of sulfur and manganese is linked by the following dependence Mn.S < 0.016, the total content of carbon, manganese and chromium - no more than 1.87, and the ratio of the yield strength to the breaking point sigma0,2/sigmaB - no more than 0.65. The technical result of the invention is the increased technological plasticity and its stability at saving the level of the mechanical properties. ^ EFFECT: the invention ensures the increased technological plasticity and its stability at saving the level of the mechanical properties. ^ 1 tbl, 2 ex |
