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This post was last edited by goldliyang on 2019-9-7 at 15:11. Chemical composition of 07Cr2AlMoRE; mechanical properties of 07Cr2AlMoRE; impact temperature of 07Cr2AlMoRE; yield and tensile strength of 07Cr2AlMoRE; condition of delivery for 07Cr2AlMoRE; production process flow for 07Cr2AlMoRE. 07Cr2AlMoRE is one of the three new grades added to GB713-2014 (07Cr2AlMoR, Q420R, 12Cr2Mo1VR). The thickness range of 07Cr2AlMoR is between 6–60 mm. It is delivered in a normalized and tempered condition. 07Cr2AlMoRE is produced using oxygen converters or electric furnaces, and it must undergo secondary refining. 07Cr2AlMoRE contains carbon, chromium, and aluminum; the remaining elements are molybdenum and rare metals. It is a rare earth alloy. 07Cr2AlMoRE is used as steel plate for boilers and pressure vessels, and it is delivered in a normalized and tempered condition. Application scope of 07Cr2AlMoR: 07Cr2AlMoR steel plates are medium- and low-temperature pressure steel plates that are widely used in industries such as petroleum, chemicals, power plants, and boilers. They are employed in the manufacture of equipment and components such as reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, pressure vessels for nuclear reactors, boiler drum, liquefied petroleum gas cylinders, high-pressure water pipes in hydroelectric stations, and turbine casings. Production process: The production process for hydrogen-resistant Cr-Mo steel involves electric arc furnace steelmaking – LF furnace refining – VD furnace vacuum degassing – rolling – flaw detection – normalizing – tempering – steel plate finishing – and performance testing. Appropriate internal control elements should be established to strictly regulate the range of fluctuations in chemical composition, thereby ensuring the stability of the steel plate’s properties. Strengthening the control of raw material preparation and smelting processes helps to effectively regulate the levels of harmful elements such as Sn, Sb, As, and Cu. It reduces the contents of P and S, thereby increasing the purity of the steel, decreasing its tendency to become brittle upon tempering, and enhancing its corrosion resistance at high temperatures. Controlled heating is employed to ensure the heating time and temperature, while measures such as controlled rolling are used to guarantee the internal quality of the steel plate. The rolling and heat treatment processes are strictly controlled to enable the steel plate to achieve a proper microstructure and grain size, ensuring that it possesses excellent overall properties.