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A method for manufacturing a steel ingot

A technology for steel ingots and steel, applied in the field of manufacturing steel ingots, can solve the problems of inapplicability, undiscussed improvement of steel cleanliness, etc.

Pending Publication Date: 2021-11-05
OVAKO SWEDEN AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the method described in the article is to refine the crystal structure, however it does not discuss improving the cleanliness of the steel
The described setup is also not suitable for industrial-scale steel production

Method used

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  • A method for manufacturing a steel ingot
  • A method for manufacturing a steel ingot
  • A method for manufacturing a steel ingot

Examples

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Embodiment Construction

[0048] The method of making a steel ingot according to the present disclosure will now be described more fully hereinafter. Methods in accordance with the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Throughout the description, the same reference numerals refer to the same elements.

[0049] Figure 2a A first step 1000 of providing a steel melt is shown. Iron and steel melts may be produced by conventional iron and steel manufacturing methods, including melting iron and steel feedstock, such as scrap metal, in an electric arc furnace 10 . The steel melt is poured into the ladle 20 for oxygen reduction, and then poured into the ladle 30 for refining. In a method according to the present disclosure...

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Abstract

A method for manufacturing a steel ingot in a casting arrangement (100) comprising a vacuum vessel (110); an ingot mold (120) arranged within the vacuum vessel and a stirrer (130) arranged to stir liquid steel in the ingot mold, comprising: -providing (1000) a liquid steel melt; filling (2000) the ingot mold (100) with the liquid steel melt; applying (3000) a reduced pressure within the vacuum vessel (110); allowing the liquid steel melt to solidify into an ingot; allowing the liquid steel melt to solidify under stirring within the ingot mold at a reduced pressure during solidification of the steel melt; wherein, the liquid steel melt comprises a predetermined amount of carbon and; incidental impurity elements in the form of oxides, wherein during stirring the oxides are reduced by carbothermic reaction in which oxygen in the oxides and carbon in the steel melt form carbon-monoxide.

Description

technical field [0001] The present disclosure relates to a method of manufacturing a steel ingot in a casting installation. Background technique [0002] In traditional steel manufacturing, molten metal from a smelting furnace is usually poured into a ladle, from which the metal is then poured into containers for further production steps. When the volume of the ladle is small, the molten metal can be poured from the lip on the top of the ladle. When the ladle is larger, the metal is poured from refractory nozzles at the bottom of the ladle. The nozzle can be closed from inside the ladle with a refractory plug. Devices without stoppers are also widely used. In this case, the nozzle of the ladle is closed from the outside by means of a refractory plate. The plate has an orifice that can be moved to coincide with the nozzle, allowing the metal to flow out. [0003] In the ingot steel industry, molten steel is poured from a ladle into a mould. Metal can be injected into th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D7/00C21C7/00C21C7/06C21C7/10B22D18/06B22D27/04B22D27/15
CPCB22D7/00B22D18/06B22D27/15B22D27/04C21C7/0025C21C7/10C21C7/06B22D27/02C22C38/02C22C38/04C22C38/18
Inventor 贾恩-埃瑞克·安德松乔金·法格伦德
Owner OVAKO SWEDEN AB
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