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Steel billet flame cleaning device and steel billet flame cleaning method

A technology for flame cleaning and steel billet, which is applied to the flame cleaning device of steel billet and the field of flame cleaning of steel billet.

Active Publication Date: 2011-12-07
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the oxygen blowing conditions of the wide-surface flame cleaning mechanism 20 are made uniform, the flame cleaning of the corners where the temperature is relatively low may become insufficient.

Method used

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  • Steel billet flame cleaning device and steel billet flame cleaning method
  • Steel billet flame cleaning device and steel billet flame cleaning method
  • Steel billet flame cleaning device and steel billet flame cleaning method

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Experimental program
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Embodiment Construction

[0047] Refer to the following Figure 1A ~ Figure 1C , figure 2 Preferred embodiments of the present invention will be described.

[0048] exist Figure 1A The figure shows the flame cleaning device 100a of the first embodiment of the present invention. The flame cleaning device 100a that carries out thermal flame cleaning to the 4 faces of the steel billet 10 is from the wide surface flame cleaning mechanism 20 (the upper surface flame cleaning mechanism 20a, the lower surface flame cleaning mechanism 20b), the two side flame cleaning mechanisms 22,22 to the steel billet 10 The surface is blown with a flame to clean oxygen and other gases. like Figure 1A As shown, a side flame cleaning mechanism 22 is respectively fixed on the reference side 31a of the upper surface flame cleaning mechanism 20a and the reference side 31b of the lower surface flame cleaning mechanism 20b.

[0049] The wide surface torch mechanism 20 (upper surface torch mechanism 20 a and lower surface ...

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PUM

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Abstract

The hot scafing apparatus of the present invention comprises a safing oxygen cylinder having a base end and a movable end, a piston separator inserted from the movable end that divides the scafing oxygen cylinder into a base end area where oxygen is supplied and a movable end area where oxygen is not supplied, a slit nozzle having a base nozzle end capable of directing oxygen gas from the base end area to a slab and a controller for controlling the piston position, wherein the base nozzle end is positioned outside of the side of the slab on the base end area.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2009-004409 for which it applied in Japan on January 13, 2009, and uses the content here. technical field [0002] The invention relates to a flame cleaning device for a billet and a flame cleaning method for a billet. This flame cleaning device has a torch for blowing oxygen to the surface of the billet. Background technique [0003] For the purpose of improving quality by removing cracks, surface matter, pores, etc. existing near the surface of cast slabs produced by continuous casting, etc., the surface is flame cleaned by blowing oxygen to the billet under hot conditions. This process of scarfing under hot conditions is also referred to as hot scarf. Such as Figure 4A As shown, since the four sides of the steel slab are simultaneously cleaned with hot flame under hot conditions, the quality of the steel slab can be improved at high speed, high energy efficiency, and low cost. [0004] Spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K7/06B22D11/12
CPCB23K7/06B22D11/12
Inventor 细川正三郎山中秀一
Owner NIPPON STEEL CORP