Steel for enamel and production method thereof

A manufacturing method and enamel technology, applied in the field of steel grades and their manufacturing, can solve the problems such as peeling off of the adhering porcelain layer, and achieve the effects of good plasticity and high strength

Inactive Publication Date: 2012-10-24
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the adhesion is not good, the porcelain layer is easy to peel off from the surface of the steel plate

Method used

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  • Steel for enamel and production method thereof
  • Steel for enamel and production method thereof

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Embodiment A-H

[0054] Manufacture the steel for enamelling of the present invention according to the following steps, control the chemical element ratio of each embodiment as shown in Table 1 (see Table 2 for the specific process parameters of each embodiment):

[0055] (1) Smelting, vacuum degassing: Iron oxide powder is added during the smelting process. The amount of iron oxide powder added is 0.40-2.50 kg per ton of steel. After adding, stir fully. The stirring time does not exceed 30 minutes, so that O≥0.010 in molten steel ~0.050%; blow argon and stir after vacuum degassing, control H<2ppm in the steel, when N≥(0.002~0.015wt%), blow nitrogen after vacuum degassing treatment;

[0056] (2) Continuous casting;

[0057] (3) Hot rolling the cast slab: control the hot rolling heating temperature at 950-1200°C, and roll in two stages. The first stage is rolled in the austenite zone at a temperature of 900-1100°C. Rolling in the body area, the final rolling temperature (FT, °C) satisfies the ...

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Abstract

The invention discloses a steel for enamel, and is characterized by comprising the following chemical elements by mass: not more than 0.020% of C, not more than 0.05% of Si, 0.10-0.50% of Mn, not more than 0.03% of P, 0.003-0.050% of S, 0.001-0.03% of Al, 0.001-0.015% of N, 0.005-0.050% of O, not more than 0.005% of Ca, not more than 0.005% of Mg, not more than 0.10% of Cu, not more than 0.10% of Cr, not more than 0.10% of Ni, not more than 0.10% of Mo, at least one of 0.0005-0.003% of B, not more than 0.01% of Nb, not more than 0.02% of V, and 0.001-0.05% of Ti, and the balance of Fe and other inevitable impurities, wherein N(%)*Ti(%) is not more than 3*10<-4>. Correspondingly, the invention further discloses a production method of the steel for enamel. The steel for enamel has excellent comprehensive performance.

Description

technical field [0001] The invention relates to steel grades and a manufacturing method thereof, in particular to a steel for enamelling and a manufacturing method thereof. Background technique [0002] One-time enamel process is a kind of enamelling process in which the top glaze is directly applied without applying the bottom glaze, and the top glaze is fired on the steel plate. The difference between the one-time enameling process and the two-time enamelling process is that the two-time enameling process first needs to enamel a layer of primer on the steel plate and other bases, and then apply a layer of glaze on the bottom glaze. And the binding force between the bottom glaze and the top glaze is good, and it is beneficial to improve the anti-scale explosion performance. Therefore, comparatively speaking, one-time enamelling has higher requirements on the adhesion between the steel plate base and the porcelain layer, the scale resistance, and the prevention of defects s...

Claims

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Application Information

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IPC IPC(8): C22C38/60C22C38/06C22C38/14C21D8/02
CPCC22C38/14C22C38/06C21D8/02C22C38/60C21D8/0205C22C38/001C22C38/002C22C38/004C22C38/04C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/54
Inventor 孙全社郑建忠居发亮张志超刘玉章
Owner BAOSHAN IRON & STEEL CO LTD
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