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Smelting method for stainless steel material

A smelting method and stainless steel technology, applied in the field of smelting, to achieve the effects of low gas content, good quality of molten steel and strong adaptability

Active Publication Date: 2015-10-07
KOCEL STEEL
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of the prior art, provide a unique method, improve the quality of molten steel, reduce production costs, and simultaneously solve the problems of enterprises in smelting molten steel of various materials in the same EAF furnace. Material smelting method

Method used

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Embodiment Construction

[0022] A method for smelting a stainless steel material, the method comprising the steps of:

[0023] 1) Material preparation: The amount of alloy that needs to be added to stainless steel is large. Before smelting, calculate the amount of molten steel that needs to be melted in the EAF furnace according to the actual composition. = Amount of molten steel required for EAF furnace / recycling rate; material preparation is completed according to the calculation results, mainly scrap steel, and the rest are pig iron and cast steel riser return materials.

[0024] 2) EAF furnace smelting:

[0025] This process mainly completes the melting and dephosphorization process of scrap steel. After the scrap steel is completely melted, take samples and analyze them. Sampling and analysis again, after the P content meets the requirements, the oxide slag will flow off, and the molten steel will be tapped when the temperature rises to 1600~1650°C.

[0026] 3) The first smelting of LF furnace:...

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Abstract

The invention relates to a smelting method, in particular to a smelting method for a stainless steel material. The smelting method comprises the following steps: preparing materials, carrying out EAF (electric arc furnace) smelting, carrying out LF (low frequency) furnace primary smelting, carrying out VOD furnace smelting and carrying out LF furnace re-smelting. The smelting method disclosed by the invention is unique, improves the quality of molten steel, reduces the production cost and solves the problem of smelting various molten steel in the same EAF furnace by the enterprises.

Description

technical field [0001] The invention relates to a smelting method, in particular to a smelting method of stainless steel material. Background technique [0002] In the prior art, common methods for smelting stainless steel materials mainly include one-step method, two-step method and three-step method. The one-step method mainly completes all melting, decarburization, reduction and refining processes in the EAF furnace. The two-step method mainly adopts the process route of EAF+AOD or EAF+VOD, that is, the melting and alloying process is completed in the EAF furnace, and the decarburization, reduction and refining processes are completed in the AOD furnace or VOD furnace. The three-step method mainly adopts the EAF+AOD+LF process route, that is, the melting and alloying process is completed in the EAF furnace, the decarburization process is completed in the AOD furnace, and the reduction and refining process is completed in the LF furnace. [0003] These three processes ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C21C7/10C21C7/04
CPCY02P10/20
Inventor 龚明健张生存王平赵国伟
Owner KOCEL STEEL
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