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A kind of smelting method of zg06cr13ni4mo steel and zg06cr13ni4mo steel

A smelting method and rough smelting technology, which is applied in the smelting of ZG06Cr13Ni4Mo steel and in the field of ZG06Cr13Ni4Mo steel, can solve the problems of long smelting production cycle, high oxygen content of molten steel, and large basic investment, so as to reduce the complexity of equipment, low smelting cost, and smelting short cycle effect

Active Publication Date: 2022-08-02
SHANGHAI ELECTRIC SHMP CASTING & FORGING CO LTD
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  • Abstract
  • Description
  • Claims
  • 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 there are high operating requirements, long smelting production cycle, generally high production costs, and high oxygen content in molten steel.

Method used

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  • A kind of smelting method of zg06cr13ni4mo steel and zg06cr13ni4mo steel
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Embodiment Construction

[0022] The content of the present invention may be more readily understood by reference to the following detailed description of the preferred embodiments of the invention and the included examples. Unless otherwise defined, 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 will control. As used herein, the term "prepared from" is synonymous with "comprising". As used herein, the terms "comprising," "including," "having," "containing," or any other variation thereof, are intended to cover non-exclusive inclusion. For example, a composition, step, method, article or device comprising the listed elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such composition, step, method, article or device elements.

[0023] The conjunction "consistin...

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Abstract

The invention discloses a method for smelting ZG06Cr13Ni4Mo steel, which comprises the following steps: S1 calculation of ingredients, calculation of total charge according to the amount of molten steel required by the product, selection of charge and alloy with Ni weight percentage of 4% as the target value, charge including return of 25Cr2Ni4MoV raw materials, nickel-containing pig iron, high-quality scrap steel; S2 electric arc furnace roughing, including charge melting, dephosphorization and decarburization, pre-deoxidation, alloying, reduction and tapping steps, wherein, in the dephosphorization and decarburization step, when [C]≤ When 0.02% and [P]≤0.003%, the oxidized slag is removed, and in the pre-deoxidation step, after all the oxidized slag is removed, 5.0-6.0kg / t steel of aluminum and iron is added for pre-deoxidation; S3 ladle refining, the total refining time ≥1h, lift out and pour after refining. The invention utilizes an electric arc furnace and a refining furnace to produce low-carbon stainless steel products with w(C): 0.04-0.06%, the technological process is simple, the smelting cycle is short, the equipment complexity is reduced compared with the VOD and AOD smelting processes, the smelting cost is low, and The average oxygen content in molten steel is 5.9ppm, which improves the purity of molten steel.

Description

technical field [0001] The invention relates to the field of low-carbon stainless steel smelting, in particular to a smelting method of ZG06Cr13Ni4Mo steel and 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 alloying element content, and the carbon content requires C: 0.04-0.06%, which is a typical low-carbon stainless steel. [0003] The existing smelting method of low carbon stainless steel is mainly produced by the electric arc furnace + AOD / VOD process. Carbon, and then go through processes such as re-reduction, slag formation, and alloying. However, this smelting process requires proprietary vacuum equipment and argon blowing equipment, and the basic investment is large, and there are high operating requirements, long smelting production cycle, generally high production cost, and high oxygen content in molten s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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