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[CN 201710609331.9] Steel for wear-resistant steel for high-speed hammers by double quenching and distribution process and preparation method thereof
[CN 201710609331.9] A Double Quenching and Distribution Process Wear-resistant Steel for High-speed Hammers and Its Preparation Method Title: A Double Quenching and Distribution Process Wear-resistant Steel for High-speed Hammers and Its Preparation Method Application Number: CN 201710609331.9 Applicant: Beijing University of Science and Technology Application Date: 2017-7-25 Patent Type: Invention Application for a Double Quenching and Distribution Process Wear-resistant Steel for High-speed Hammers and Its Preparation Method, Belonging, which Belongs to Metal Material Processing Technology. The wear-resistant steel for high-speed hammers in the double quenching distribution process of the present invention makes the structure of the steel finer and more uniform through a reasonable alloy system composition design and an innovative double quenching distribution process, and the lath width is significantly smaller. The finally obtained dual-phase structure with a controllable proportion has comprehensive mechanical properties of high hardness, high strength, high toughness and high fatigue resistance. Yield strength of material Rp0.2≥ 1550MPa, tensile strength Rm≥ 1950MPa, elongation after fracture A≥ 13%, strong plastic product ≥ 25GPa ·%,V-notch impact energy ≥ 13J, hardness ≥ 55HRC. The membrane-like residual austenite distributed between the martensite lath is not only conducive to coordinating the deformation of the organization under stress conditions, but also has a very obvious effect on hindering the expansion of microscopic cracks, which improves the fatigue resistance of the material and the service life of the hammer. This double quenching distribution process high-speed hammer wear-resistant steel is an ideal material for the steel used in the hammer of the crusher.
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