冀鸰, 余道军. Development of High Strengthening and Toughening TMCP of 40MnVS Steel Round Bars for Direct Cutting Appliction[J]. Special Steel, 2023, 44(2): 25-28.
冀鸰, 余道军. Development of High Strengthening and Toughening TMCP of 40MnVS Steel Round Bars for Direct Cutting Appliction[J]. Special Steel, 2023, 44(2): 25-28. DOI: 10.20057/j.1003-8620.2022-00016.
Using Theno-Mechanicd Control Process(TMCP)of 1030 ℃ breakdownrdling 800 ℃ continous rolling and water through after rolling
φ110
&
mm non-quench and tempering (NQT) 42MnVS for free cutting application was trial produced. The results indicate that water fast cooling process of rolled steel can refine grain size
improve banded structure obviously and increase mechanical properties of steel. At the condition that tensile strength reaches 945 MPa and yield strength reaches 800 MPa
the impact energy A
ku
of steel products can still reaches more than 70 J. It can be used to replace 42CrMo NQT steel.