Cold rolling glass-lined steel having excellent scale cracking resistance and extra-deep drawing property and manufacturing method thereof

A manufacturing method and anti-scaling explosion technology, applied in the field of cold-rolled enamelled steel and its manufacturing, can solve the problems of poor formability of steel plates and failure to achieve ultra-deep drawability, etc., and achieve stable performance, wide adaptability, and ultra-deep drawability The effect of scale resistance

Active Publication Date: 2008-06-25
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology

Conversely, if the content of impurity elements in the steel is high, the formability of the steel plate will be poor, and it will not meet the requirements of ultra-deep drawability.

Method used

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  • Cold rolling glass-lined steel having excellent scale cracking resistance and extra-deep drawing property and manufacturing method thereof

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Embodiment Construction

[0032]See Table 1 for Examples 1-10, and add a pair of proportions, with the balance being iron and other unavoidable impurities. Smelting and processing were carried out according to the process of the technical plan. Examples 1-5: heating temperature of hot rolling 1150°C, finishing temperature 880°C, coiling temperature 700°C, cold rolling reduction rate 66%, bell annealing temperature: 700°C, The nitrogen content of the bell annealing is 6%. Example 6-10 The heating temperature of hot rolling is 1200°C, the final rolling temperature is 900°C, the coiling temperature is 730°C, the cold rolling reduction rate is 67.5%, the bell annealing temperature is 700°C, and the nitrogen content of the bell annealing is 8%. The performance of the finished product is shown in Table 1. It can be seen from Table 1, that the elongation rate of the finished product performance is 43-53% (gauge length 80mm), with an average of 47%, three-way r m The value is 1.82~2.33, and the average is 2.05, wh...

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Abstract

The invention relates to a cold rolling glass-lined steel having excellent scale cracking resistance and extra-deep drawing property, and the manufacturing method, the steel has the constituents (by weight percentage) of carbon <=0.005%, Si <=0.030%, manganese 0.10-0.30%, phosphor <=0.015%, sulfur 0.010-0.050%, aluminum 0.020-0.050%, nitrogen 0.004-0.015%, titanium content = 4C+3.42N+1.5S+0.02-0.04%, and balancing ferrum and unavoidable impurities, and 0.01%<=C+0.5S+0.886N<=0.03%.

Description

Technical field [0001] The invention relates to a cold-rolled enamel steel and a manufacturing method thereof, in particular to an ultra-low carbon cold-rolled enamel steel with excellent scale resistance and ultra-deep drawability and a manufacturing method thereof. Background technique [0002] Ultra-low-carbon enamel steel is a new generation of enamel steel developed in the 1980s. It can meet the needs of the production of enamel products with complex shapes, difficult stamping, and high enamel quality requirements. [0003] The world’s major manufacturers of ultra-deep drawing enameled steel plates include Japan’s Japan Steel Pipe, Nippon Steel, and Germany’s Thyssen. There are no related patents in China. In the process of manufacturing enamel steel, foreign manufacturers use ultra-low carbon steel based on aluminum deoxidation. By controlling the chemical composition range and processing parameters in the steel, the steel plate has excellent scale resistance and ultra-deep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/14C21D8/04
Inventor 孙全社金蕾
Owner BAOSHAN IRON & STEEL CO LTD
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