Method for producing high-aluminum steel plate blanks

A steel slab and high-aluminum technology, which is applied in the production field of high-aluminum steel slabs, can solve the problems of complex process, low production efficiency, and difficulty in reaching 1.5wt%, etc., and achieves the effect of simple process, easy control and good ventilation effect.

Active Publication Date: 2013-04-03
LAIWU IRON & STEEL GRP
View PDF5 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this production method, the electric arc furnace is used as the primary smelting furnace, the production efficiency is low, the cost is high, and the refining process requires slag removal, which is relatively complicated
In addition, the aluminum content in the steel described in the inven

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Example 1

[0039] This embodiment is used to illustrate the preparation of TRIP600 high-aluminum steel slab according to the method of the present invention.

[0040] (1) Primary refining of converter

[0041] Add 120 tons of molten iron and 10 tons of scrap steel into the 120-ton converter (here, the 120-ton converter refers to the converter’s output of 120 tons), and add high-quality low-sulfur active lime and high-quality slagging materials. The addition is completed 3 minutes before the end point, and the single slag process is used for smelting, and the final slag alkalinity is controlled at about 3.5; once the carbon is pulled, the end pressure gun time is not less than 60s. Blowing ends after 22 minutes, the end point [C] is 0.10wt%, and the end temperature is 1680℃; the converter tapping adopts a sliding plate to stop the slag tapping, and the slag stop makes the amount of slag entering the ladle 5kg / t Tons of steel , When the molten steel reaches 1 / 4, start to add...

Example Embodiment

[0049] Example 2

[0050] This example is used to illustrate the preparation of TRIP600 high-aluminum steel slab according to the method of the present invention.

[0051] In this embodiment, except that 800 kg of synthetic slag is added during the tapping process after the initial refining of the converter, the TRIP600 high-aluminum steel slab is prepared in the same manner as in the first embodiment.

[0052] The method of this embodiment is used to produce TRIP600 high-aluminum steel with an Al content of more than 1.5wt%. The steel grade composition standard and production test data are shown in Table 1.

Example Embodiment

[0053] Example 3

[0054] This example is used to illustrate the preparation of TRIP600 high-aluminum steel slab according to the method of the present invention.

[0055] Except in the continuous casting production process of this embodiment, the addition amount of the tundish covering agent is 0.6kg / t steel Otherwise, a TRIP600 high-aluminum steel slab was prepared in the same manner as in Example 1.

[0056] The method of this embodiment is used to produce TRIP600 high-aluminum steel with an Al content of more than 1.5wt%. The steel grade composition standard and production test data are shown in Table 1.

[0057] Table 1 Steel grade composition (unit: wt%) and properties of Examples 1 to 3

[0058] Test items

[0059] It can be seen from Table 1 above that the TRIP600 high-aluminum steels of Examples 1 to 3 produced according to the method provided by the present invention meet the standard, and the Al content in the high-aluminum steels of each embodiment exceeds 1.5wt%, and T...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for producing high-aluminum steel plate blanks. The method comprises the following steps: primarily smelting, wherein in the process, argon serves as bottom blowing gas and the end-point carbon content is controlled to be not less than 0.06 weight percent; strictly controlling the slag discharge amount in the tapping process, performing deoxidation alloying and recarburization on molten steel and slagging; performing ladle furnace (LF) refining, conveying the molten steel to an LF station, and feeding an aluminum wire for the first time while weakly stirring by using the argon; after feeding aluminum for the first time, stirring by using the argon, adjusting the temperature, adding aluminum (Al) particle to diffuse and deoxidize, so as to guarantee white slag operation, and feeding aluminum for the second time; performing Ruhrstahl and Heraeus (RH) vacuum treatment and component fine adjustment on the molten steel after feeding the aluminum for the second time, so as to adjust the Al content to be over 1.5 weight percent and adjust other alloy component content to be within the required range; and injecting the molten steel into a tundish, pouring the molten steel into a plate blank continuous casting crystallizer from the tundish and finishing the continuous casting production to obtain the high-aluminum steel plate blanks.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Owner LAIWU IRON & STEEL GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap