Low-carbon alloy steel smelting method capable of reducing volatile alloy element burning loss, packaging body, long belt of packaging body and feeding method and special feeding device of packaging body

Abstract

The invention relates to a low-carbon alloy steel smelting method capable of reducing volatile alloy element burning loss, a packaging body of a volatile alloy element material, a long belt of the packaging body and a feeding method and special feeding device of the packaging body of the volatile alloy element material. In the late smelting stage, the volatile alloy element material is placed in the prepared pure iron packaging body, and then the special feeding device of the volatile alloy element material is used to add the packaging body in molten steel to fully utilize the alloy element material, lower the burning loss of alloy elements and refine grains. The smelting method can be adopted to throwing the volatile alloy element material in molten steel continuously and increase the automation degree of feeding; and the smelting method is simple, is easy to operate and can be used to save production cost.

Description

technical field [0001] The invention relates to a low-carbon alloy steel smelting method for reducing burning loss of volatile alloy elements, a packaging body of volatile alloy element materials and its strip, a supply method of packaging body of volatile alloy element materials and a special feeding device thereof , belongs to the technical field of low-carbon alloy steel smelting. Background technique [0002] Low-carbon alloy steel needs to add a variety of alloying elements, such as Si, Mn, Nb, Mo, Al, Ni, Ti, etc. These solid-solution elements mainly play a role in solid-solution strengthening and precipitation in high-strength low-carbon and ultra-low-carbon alloy steel. Strengthening and fine-grain strengthening, so that the grains can be refined and the mechanical properties of alloy steel can be improved. [0003] The composition design of low-carbon alloy steel is different from traditional steel types. Generally, trace amounts of alloying elements such as Mn and...

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Problems solved by technology

The burning loss of alloying elements has an adverse effect on the properties of alloy steel. For example, the burning loss of Mn element causes the strength of alloy steel to decrease; the burning loss of Nb element makes the recrystallization temperature of alloy steel cannot be effectively reduced, which affects the rolling effect; the burning loss of Al element The damage will lead to a reduction in the number of carbonitride precipitation in the alloy steel structure; these consequences make the alloying elements unable to play the role of fine grain strengthening

Therefore, the burning loss of these volatile alloying elements has an important impact on the structure and mechanical properties of the alloy steel, causing great trouble to the correct analysis of the properties of the alloy steel, and the cost of the alloying elements increases due to a large amount of burning of the alloying elements, which wastes resources.

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