Low-alloy high-strength wear-resistant steel can be widely used in mining machinery, engineering machinery and other equipment due to its high hardness and good toughness.NM600 grade low-alloy high-strength wear-resistant steel as the highest level of wear-resistant steel, energy saving and reduction of consumption is of great significance.
NM600 wear-resistant steel plate through its high hardness and ultra-high wear resistance can be thinner specifications to reach a higher level of safety design indicators, and at the same time can effectively reduce the weight of the vehicle, to achieve the requirements of energy saving and environmental protection.
NM600 steel plate implementation standards: the implementation of enterprise standards Q / XGJ166-2009, through the study of tempering process parameters on the test steel organization performance, and combined with the austenite grain growth law and the austenitization temperature under the influence of the insulation time law, the design of the quenching + low-temperature tempering orthogonal test program, the study of the impact of the different heat treatment process parameters on the organization of the two test steel properties containing niobium test The steel was quenched in water after holding at 900℃ for 60min, and then tempered at 200℃ for 30min, the organization obtained was slat martensite and a small amount of residual austenite, with an organizational hardness value of 592HBW, a tensile strength of 2037.8MPa, a specified plastic elongation strength of 1605.8MPa, an elongation after break of 11.1%, and an impact work of 16.8J at -20℃, which reached the value of NM600. It reaches the standard requirements of NM600 low alloy high-strength wear-resistant steel.
