Smelting method of ZG06Cr13Ni4Mo steel and ZG06Cr13Ni4Mo steel

A smelting method and rough smelting technology, applied in the smelting of ZG06Cr13Ni4Mo steel and ZG06Cr13Ni4Mo steel field, can solve the problems of long smelting production cycle, high oxygen content in molten steel, and high operation requirements, and achieve reduced equipment complexity, low smelting cost, and technological process. simple effect

Active Publication Date: 2021-04-16
SHANGHAI ELECTRIC SHMP CASTING & FORGING CO LTD
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  • Application Information

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Problems solved by technology

However, this smelting process requires proprietary vacuum equipment and argon blowing equipment, and the basic investment is large, and the

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  • Smelting method of ZG06Cr13Ni4Mo steel and ZG06Cr13Ni4Mo steel
  • Smelting method of ZG06Cr13Ni4Mo steel and ZG06Cr13Ni4Mo steel

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[0022] The invention can be more readily understood by reference to the following detailed description of the preferred practice of the invention and the included examples. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the definitions in this specification shall prevail. As used herein, the term "prepared from" is synonymous with "comprising". As used herein, the terms "comprises," "including," "has," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, step, method, article, or device comprising listed elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to such composition, step, method, article, or device. element.

[0023] The conjunction "consisting of" excludes any unspecifi...

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Abstract

The invention discloses a smelting method of ZG06Cr13Ni4Mo steel. The smelting method comprises the following steps: S1, burdening calculation: total materials, furnace burden and alloy are calculated according to the amount of molten steel required by the product and are selected by taking 4 wt% of Ni as a target value, and the furnace burden comprises 25Cr2Ni4MoV return scraps, nickel-containing pig iron and high-quality scrap steel; S2, electric arc furnace rough smelting, specifically, furnace burden melting, dephosphorization and decarburization, pre-deoxidation, alloying, reduction and tapping are included, in the dephosphorization and decarburization step, when [C] is smaller than or equal to 0.02% and [P] is smaller than or equal to 0.003%, oxidizing slag is pulled away, and in the pre-deoxidation step, 5.0-6.0 kg/t steel of ferro-aluminum is added for pre-deoxidation after all oxidizing slag is pulled away; and S3, ladle refining, specifically, the total refining time is larger than or equal to 1 h, and hoisting-out pouring is conducted after refining. According to the method, the low-carbon stainless steel product with w (C) of 0.04-0.06% is produced through the electric arc furnace and the refining furnace, the technological process is simple, the smelting period is short, compared with VOD and AOD smelting processes, the equipment complexity is reduced, the smelting cost is low, the average oxygen content in the molten steel is 5.9 ppm, and the purity of the molten steel is improved.

Description

technical field [0001] The invention relates to the field of low-carbon stainless steel smelting, in particular to a method for smelting ZG06Cr13Ni4Mo steel and the ZG06Cr13Ni4Mo steel. Background technique [0002] Low-carbon stainless steel is a material commonly used in the manufacture of important castings for steam turbines, especially ZG06Cr13Ni4Mo steel has a high content of alloying elements, and the carbon content requires C: 0.04-0.06%, which is a typical low-carbon stainless steel. [0003] The existing low-carbon stainless steel smelting method is mainly produced by electric arc furnace + AOD / VOD process. Its main feature is to melt the charge in the electric arc furnace, add high-carbon ferrochrome and other alloys, and carry out oxygen blowing and deoxidation in the AOD / VOD furnace. Carbon, and then go through processes such as re-reduction, slagging, and alloying. However, this smelting process requires proprietary vacuum equipment and argon blowing equipment...

Claims

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Application Information

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IPC IPC(8): C21C5/52C21C7/06C21C7/064C21C7/072C21C7/00C22C33/04
CPCY02P10/20
Inventor 闫抒宇刘立鹤张一李刚
Owner SHANGHAI ELECTRIC SHMP CASTING & FORGING CO LTD
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