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Method for controlling cleanliness of high-strength, high-aluminum and high-manganese steel

A control method, high manganese steel technology, applied in the field of molten steel smelting, can solve problems such as poor cleanliness, poor quality of molten steel, and inability to complete casting, so as to achieve the effect of ensuring cleanliness

Inactive Publication Date: 2021-02-23
攀钢集团西昌钢钒有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the high aluminum content of this steel type, aluminum is easy to oxidize, and high manganese production is difficult to hit at one time, which may easily cause poor quality and cleanliness of molten steel, and the casting of the first furnace cannot be completed during production, etc.

Method used

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  • Method for controlling cleanliness of high-strength, high-aluminum and high-manganese steel

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Embodiment Construction

[0023] The core of the invention is to provide a method for controlling the cleanliness of high-strength, high-aluminum and high-manganese steel, which is used to reduce inclusions in molten steel and improve cleanliness.

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Please refer to figure 1 , figure 1 It is a flow chart of a specific embodiment of the method for controlling the cleanliness of high-strength, high-aluminum, high-manganese steel provided by the present invention.

[0026] In this embodiment, the method for controlling the cleanliness of the high-strength high-aluminum high-manganese steel includes the following steps:

[0027] Step S1: adding molten iron into the converter;

[0028] Step S2: When tapping the converter, the mass percentage of manganese...

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Abstract

The invention discloses a method for controlling the cleanliness of high-strength, high-aluminum and high-manganese steel. The method comprises the following steps that molten iron is added into a converter; when converter tapping is carried out, the mass percentage content of the manganese element is added by 0.2% according to the target lower limit, and in the tapping process, the carbon elementis firstly used for deoxidation; in the LF refining process, the mass percentage content of the aluminum element is controlled to be 0.45%-0.55%, and the mass percentage content of the manganese element is controlled to be 1.8%+ / -0.1%. According to the control method, the cleanliness of the steel grade represented by high strength, high aluminum and high manganese can be effectively guaranteed bycontrolling the converter end point, the LF refining primary hit and the mass percentage of the manganese element and the aluminum element.

Description

technical field [0001] The invention relates to the field of molten steel smelting, in particular to a method for controlling the cleanliness of high-strength, high-aluminum, high-manganese steel. Background technique [0002] High-strength, high-aluminum, high-manganese steel refers to steels with an AlS content of 0.5-0.6% and a Mn content of 1.7-19%. Due to the high aluminum content of this steel type, aluminum is easy to oxidize, and high manganese production is difficult to hit at one time, which may easily cause poor quality and cleanliness of molten steel, and the casting of the first furnace cannot be completed during production. [0003] Therefore, how to effectively improve the cleanliness of high-strength, high-aluminum, high-manganese steel is a technical problem that those skilled in the art need to solve. Contents of the invention [0004] The object of the present invention is to provide a method for controlling the cleanliness of high-strength, high-alumin...

Claims

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Application Information

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IPC IPC(8): C22C33/04C22C38/06C22C38/04C21C5/28C21C7/06C21C7/076B22D11/111
CPCB22D11/111C21C5/28C21C7/06C21C7/076C22C33/04C22C38/04C22C38/06Y02P10/20
Inventor 付新瑞黄汝铿龚洪君杨晓东卓钧邱伟
Owner 攀钢集团西昌钢钒有限公司
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