Production process of high manganese and aluminous steel continuous casting billet

Abstract

The invention relates to a production process of a high manganese and aluminous steel continuous casting billet. The production process of the high manganese and aluminous steel continuous casting billet comprises an electric furnace steel making process, a refining process and a continuous casting billet casting process, and comprises the following concrete steps of during electric furnace steel making, controlling the tapping temperature and the contents of C and P, and adding manganese and aluminous; during refining, deoxidizing slag surfaces, vacuum degassing after adjusting the contents of Mn and Al, feeding ferrite calcium wires before tapping, and controlling the tapping temperature; during continuous casting billet casting, controlling the casting speed and the withdrawing speed for ensuring constant-speed production; and during the whole process of casting, carrying out argon shield, and after casting, feeding the steel billet into a slow cooling pit for slow cooling. According to the production process of the high manganese and aluminous steel continuous casting billet provided by the invention, through controlling the tapping time, adjusting the aluminum content during the refining process, and controlling the casting speed during the billet-drawing process, continuous casting billet finished steel meeting the requirements of components and performances can be produced, the occurrence of a bleed-out accident can be prevented, and the smooth production of the high manganese and aluminous steel continuous casting billet is ensured.

Description

technical field [0001] The invention relates to a continuous casting slab production process, in particular to a high manganese and high aluminum steel continuous casting billet production process. Background technique [0002] For high manganese and high aluminum steel continuous casting billets, the aluminum content is usually 120-180 times that of ordinary steel (0.02%), and the manganese content is as high as 16-18%. High manganese and high aluminum steel belongs to the low magnetic steel series high alloy single phase austenitic manganese steel. characteristic. It has a wide range of applications in non-magnetic buildings, non-magnetic machinery, mineral processing and prospecting equipment, and military. This steel is rolled Steel wire for non-magnetic steel ropes on viaducts. [0003] Aluminum in high manganese and high aluminum steel exists as an alloying element, and the density of aluminum is 2.7g / cm 3 , while the density of molten steel is 7.3g / cm 3 , alumi...

AI Technical Summary

Problems solved by technology

[0003] Aluminum in high manganese and high aluminum steel exists as an alloying element, and the density of aluminum is 2.7g / cm 3 , while the density of molten steel is 7.3g / cm 3 , aluminum is much lighter than molten steel, and aluminum is easily oxidized, so it is difficult to control the allocation of aluminum components in the molten steel smelting process

At the same time, because this steel contains high manganese and aluminum, the liquidus temperature is low; in addition, high manganese high aluminum steel belongs to Fe-Mn-Al low magnetic austenitic steel, because of high manganese content, thermal conductivity Poor, its thermal conductivity is only 1 / 4 to 1 / 5 of that of carbon steel, and steel breakout accidents are extremely prone to occur during the drawing process

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