Continuous casting method of high-carbon steel plate blank

A slab continuous casting, high carbon steel technology, applied in the field of iron and steel smelting, can solve the problems of corner crack center segregation level, surface depression of high carbon steel, etc., to improve the center segregation level, reduce the incidence of cracks, reduce the large surface and the effect of corner stress

Active Publication Date: 2016-04-20
SHOUGANG CORPORATION
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Problems solved by technology

[0004] The present invention solves the technical problems of high carbon steel surface depression, corner cracks

Method used

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Embodiment Construction

[0018] In order to solve the technical problems of high carbon steel surface depression, corner cracks and low center segregation level in the prior art, the invention provides a high carbon steel slab continuous casting method.

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] An embodiment of the present invention provides a high carbon steel slab continuous casting method, the method comprising:

[0021] Step 101: The superheat degree of high carbon steel slab casting...

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Abstract

The invention relates to the technical field of steel and iron smelting, in particular to a continuous casting method of a high-carbon steel plate blank. The method comprises the following steps: the casting superheat degree of the high-carbon steel plate blank is controlled within 10-20 DEG C by low superheat degree; the low-pulling-speed continuous casting is performed for the high-carbon steel plate blank, and the pulling speed is controlled within 0.9-1.1 m/min; the aerial fog cooling is performed for the high-carbon steel plate blank; the taper of a crystallizer is controlled according to variable taper, wherein the alkalinity of covering slag in the crystallizer is controlled within 0.93-0.99; the melting point of the covering slag is not higher than 1050 DEG C; and the viscosity of the covering slag is not higher than 0.140 pa.s. The method reduces the large surface and angle stress, enhances the solidification uniformity of a blank shell, reduces the surface crack generation rate of the plate blank, and improves the center segregation level.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a high-carbon steel slab continuous casting method. Background technique [0002] High-carbon steel is often used to manufacture mechanical equipment such as gears, springs, and saw blades. The banded structure in high-carbon steel is different from the deformation of the steel matrix, and forms a source of fatigue damage under the action of alternating stress, and the banded structure is usually related to the The slab center segregation is closely related. The high carbon steel slab center segregation level in the prior art is often low. Therefore, the workpiece is subjected to periodic alternating stress during service, which is prone to fatigue damage, which leads to the failure of the workpiece, and , Surface depressions and corner cracks appear in high carbon steel slabs. [0003] In addition, due to the relatively high carbon content and relatively low liq...

Claims

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Application Information

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IPC IPC(8): B22D11/16B22D11/18B22D11/22
Inventor 刘国梁马文俊罗衍昭刘阳春陈斌包春林李海波崔阳倪有金马威
Owner SHOUGANG CORPORATION
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