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Glassed steel with good fish scaling resistance and manufacturing method of steel plate of glassed steel

A technology for anti-scale explosion and enamel steel is applied in the field of manufacturing hot-rolled enamel steel and its steel plate, which can solve the problems of increasing smelting difficulty, increasing process cost, long production cycle, etc. Widely adaptable effect

Inactive Publication Date: 2017-01-04
ANGANG STEEL CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

The ultra-low carbon steel is used, which increases the difficulty of smelting; and the cold rolling and annealing process is used, which increases the process cost and the production cycle is long

Method used

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  • Glassed steel with good fish scaling resistance and manufacturing method of steel plate of glassed steel
  • Glassed steel with good fish scaling resistance and manufacturing method of steel plate of glassed steel
  • Glassed steel with good fish scaling resistance and manufacturing method of steel plate of glassed steel

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Embodiment Construction

[0030] The following examples are used to specifically illustrate the contents of the present invention, and these examples are only general descriptions of the contents of the present invention, and do not limit the contents of the present invention. The steel referred to in the present invention includes cast slabs, steel plates, steel pipes and the like.

[0031] Table 1 is the smelting composition of the steel of the embodiment of the present invention and the steel of the comparative example, Table 2 is the production process parameters of the steel of the embodiment of the present invention and the steel of the comparative example, and Table 3 is the performance of the steel of the embodiment of the present invention and the steel of the comparative example.

[0032] The test of anti-scale explosion performance is to place the steel plate for one month after enamelling, and observe the scale explosion point with a 100 times microscope.

[0033] Table 1 The smelting compo...

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Abstract

The invention discloses glassed steel with good fish scaling resistance and a manufacturing method of a steel plate of the glassed steel. The glassed steel comprises, by weight, 0.04%-0.10% of C, 0-0.10% of Si, 0.30%-1.0% of Mn, 0.03%-0.10% of Ti, 0-0.015% of P, 0.010%-0.045% of S, 0.003%-0.009% of N, 0.005%-0.050% of Als, 0.05%-0.25% of Cr, 0.5%-1.2% of Ti / C, and the balance Fe and inevitable impurities. The manufacturing method of the steel plate containing the components comprises the steps that the heating temperature of a continuous casting slab is 1180-1250 DEG C, the rolling starting temperature of precision rolling is 980-1100 DEG C, the finishing rolling temperature is 880-950 DEG C, a front stage cooling mode is adopted after rolling, the continuous casting slab is quickly cooled to the coiling temperature at the cooling speed higher than or equal to 30 DEG C / s within six seconds, the coiling temperature is controlled to be 630-700 DEG C, and the obtained steel plate has the good fish scaling resistance.

Description

technical field [0001] The invention relates to a method for manufacturing hot-rolled enamelled steel and its steel plate, in particular to a method for manufacturing the enameled steel and steel plate with excellent anti-scale explosion performance. Background technique [0002] Scale explosion is a fatal defect of enamel products, which greatly endangers the quality of enamel products. Enamel scale explosion is caused by hydrogen dissolved in the steel plate. Enamel products have experienced two hydrogen absorption processes in the production process, one is in the pickling process, and the other is in the enamelling process. During pickling, the first is the reaction between the iron oxide scale and the acid, and then the acid mainly reacts with the metal to produce hydrogen, part of the hydrogen escapes, and part of the hydrogen dissolves in the steel plate in the form of atoms. During the subsequent high-temperature enamel firing, the crystallization water in the porc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/60C22C38/28C21D8/02
Inventor 刘凤莲杨卫郭晓宏杨玉刘志伟李桂艳赵宝纯张瑞琪
Owner ANGANG STEEL CO LTD
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