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Super deep-drawing cold-rolled enamel steel produced by ASP diplex process and manufacturing method thereof

A duplex process and manufacturing method technology, applied in the field of metal material manufacturing, can solve the problem of not considering or not considering RH nitrogen circulation technology, etc., to improve product competitiveness, excellent formability and anti-scalding performance, and broaden product varieties. range effect

Inactive Publication Date: 2013-12-25
JIGANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this manufacturing method is only suitable for the production of low-sulfur, low-nitrogen ultra-low carbon cold-rolled IF steel under the ASP process, and does not consider that after the [S] content in the steel increases, the formation of difficult The effect of dissolved CaS on the pourability of molten steel, and the RH nitrogen circulation technology was not considered

Method used

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  • Super deep-drawing cold-rolled enamel steel produced by ASP diplex process and manufacturing method thereof
  • Super deep-drawing cold-rolled enamel steel produced by ASP diplex process and manufacturing method thereof

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1 of the present invention comprises the following steps successively:

[0031] (1) Molten iron: The molten iron is not pretreated by KR, and the sulfur content of the molten iron is 0.045%;

[0032] (2) Steelmaking: The steelmaking furnace adopts a 120-ton converter, with a tapping capacity of 142.35 tons. The converter uses high-purity oxygen with a purity greater than 99.5%. The furnace maintains a positive pressure. The mass percentage of carbon during tapping is 0.0537%. The tapping temperature is 1637°C, ensuring the final slag basicity R=4~5, and doing a good job of blocking slag for tapping;

[0033] (3) LF slagging, temperature control, and S increase: The molten steel from the converter is deoxidized and slagged and temperature controlled in the LF refining furnace. The specific process: transform the highly oxidizable converter slag into FeO+MnO with a mass percentage of less than < 1.5% reducing slag can effectively prevent the transfer of oxygen...

Embodiment 2

[0051] Embodiment 2 of the present invention comprises the following steps successively:

[0052] (1) Molten iron: The molten iron is not pretreated by KR, and the sulfur content of the molten iron is 0.047%;

[0053] (2) Steelmaking: The steelmaking furnace adopts a 120-ton converter with a tapping capacity of 154.06 tons. The converter uses high-purity oxygen with a purity greater than 99.5%. The furnace maintains a positive pressure. The mass percentage of carbon during tapping is 0.066%. The tapping temperature is 1651°C to ensure the final slag basicity R=4~5, and to do a good job of blocking slag and tapping;

[0054] (3) LF slagging, temperature control, and S increase: The molten steel from the converter is deoxidized and slagged and temperature controlled in the LF refining furnace. The specific process: the treatment cycle is 58 minutes, the heating time is 34 minutes, the reaching temperature is 1564 ° C, and the leaving temperature is 1660 ° C. Feed 30kg of alumin...

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Abstract

The invention belongs to the technical field of metal material manufacturing, and in particular relates to super deep-drawing cold-rolled enamel steel produced by an ASP diplex process and a manufacturing method thereof. The enamel steel comprises the following components in percentage by weight: less than or equal to 0.005% of carbon, less than or equal to 0.030% of silicon, 0.10 to 0.35% of manganese, less than or equal to 0.015% of phosphorus, 0.015 to 0.035% of sulfur, 0.015 to 0.050% of acid dissolved aluminum, 0.070 to 0.10% of titanium, 0.0040 to 0.0070% of nitrogen, and the balance of iron and unavoidable impurities. The manufacturing method comprises the following steps of: (1) smelting by a converter, (2) refining by an LF (ladle furnace), (3) vacuum-refining by an RH furnace, (4) continuously casting and rolling, (5) washing by acid, cold-rolling, annealing and flattening. By adoption of the LF and RH diplex process, the mass production of the super deep-drawing cold-rolled enamel steel is successfully realized on an ASP production line.

Description

technical field [0001] The invention belongs to the technical field of metal material manufacturing, and in particular relates to an ultra-deep drawing cold-rolled enamel steel produced by an ASP duplex process and a manufacturing method thereof, in particular to an ASP medium-thin slab continuous casting and rolling "LF+RH" double A manufacturing method for mass production of ultra-deep drawing cold-rolled enamelled steel by combined process method. Background technique [0002] Ultra-deep drawing cold-rolled enamelled steel has both excellent stamping performance and anti-scaling performance, and can meet the needs of the production of enameled products with complex shapes, difficult stamping and high enamel quality requirements. The most likely quality problem of enamelled steel is scale explosion during the enameling process or after cooling. The reason for the scale explosion is mainly due to the fact that there are not enough traps in the steel, the so-called hydrogen...

Claims

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Application Information

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IPC IPC(8): C22C38/14C21D8/04C21C7/10C21C7/00C21C7/06
Inventor 张磊孙卫华夏茂森王金华孙风晓祝桂合高元军郑万任宋振官魏代斌李小权倪晓青
Owner JIGANG GRP
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