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Enameled steel plate and production method thereof

A production method and enamel technology, which is applied in the field of metallurgical plates, can solve the problems of high cost, complex production process of enamel steel plates, high energy consumption, etc., and achieve the effect of preventing scale explosion, avoiding hot embrittlement, and optimizing calcium content

Inactive Publication Date: 2019-10-25
BAOTOU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the production process of the enamelled steel plate in the prior art is complex, the energy consumption is high, precious metal elements need to be added, the cost is high, and there are expansion uplifts, cold bursts, fish scale bursts, and scales. Defects in quality such as bursting, numbness and cells

Method used

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Effect test

Embodiment 1

[0074] Embodiment 1, the preparation of enamel steel plate

[0075] The preparation of the enamel steel plate of the present embodiment adopts the following steps:

[0076] The molten iron pretreated by desulfurization is subjected to converter smelting to decarburize the molten iron, and then LF refining is carried out. The molten steel is subjected to continuous casting and rolling to obtain hot-rolled steel coils. is 570 ° C, the thickness of the hot coil is 4.5mm; the hot-rolled steel coil after hot rolling is pickled to remove the iron oxide scale and cold-rolled, the reduction rate is 60%, and the thickness of the cold-rolled coil is 1.8 mm to obtain a cold-rolled steel coil. ; The cold-rolled steel coil is subjected to bell annealing, the annealing temperature is 690°C, the annealing time is 8h, and the slow cooling time is 2h; finally, the flattening process is carried out, and the flattening elongation is 1.0% to obtain the steel for enamel;

[0077] The enamel steel...

Embodiment 2

[0079] The preparation of the enamel steel plate of the present embodiment adopts the following steps:

[0080] The molten iron pretreated by desulfurization is subjected to converter smelting to decarburize the molten iron, and then LF refining; the molten steel is subjected to continuous casting and rolling to obtain hot-rolled coils. is 570 ° C, the thickness of the hot coil is 4.5mm; the hot-rolled steel coil after hot rolling is pickled to remove the iron oxide scale and cold-rolled, the reduction rate is 70%, and the thickness of the cold-rolled coil is 1.8 mm to obtain a cold-rolled steel coil. ; The cold-rolled steel coil is subjected to bell annealing, the annealing temperature is 690°C, the annealing time is 10h, and the slow cooling time is 2.5h; finally, the flattening process is carried out, and the flattening elongation is 0.8% to obtain the steel for enamel;

[0081] The enamel steel sheet is obtained by subjecting the above-obtained steel for enamel to degreasi...

Embodiment 3

[0083] The preparation of the enamel steel plate of the present embodiment adopts the following steps:

[0084] The molten iron that has been desulfurized and pretreated is subjected to converter smelting to decarburize the molten iron, and then LF refining; the molten steel is subjected to continuous casting and rolling to obtain hot-rolled steel coils. is 600 ° C, the thickness of the hot coil is 4.5mm; the hot-rolled steel coil is pickled to remove the iron oxide scale and cold-rolled, the reduction rate is 80%, and the thickness of the cold-rolled coil is 1.8 mm to obtain a cold-rolled steel coil. ; The cold-rolled steel coil is subjected to bell annealing, the annealing temperature is 660°C, the annealing time is 12h, and the slow cooling time is 3h; finally, after the flattening process, the flattening elongation is 1.2% to obtain the steel for enamel;

[0085] The enamel steel sheet is obtained by subjecting the above-obtained steel for enamel to degreasing treatment an...

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Abstract

The invention discloses an enameled steel plate. The enameled steel plate comprises components including, by weight percent, smaller than or equal to 0.05 of C, smaller than or equal to 0.03 of Si, smaller than or equal to 0.40 of Mn, smaller than or equal to 0.020 of P, smaller than or equal to 0.015 of S, and larger than or equal to 0.020 of Alt. The invention further discloses a production method of the enameled steel plate. According to the enameled steel plate and the production method thereof, by optimizing and controlling the component content and the parameter of the rolling technology, the production cost of the obtained enameled steel plate is low, and no precious metal element needs to be added. The defects in the quality aspects such as swelling upheaval, cold crackle, fish scale crackle, scale crackle, pitted bubbles and holes do not exist, the market prospect is wide, and the requirement of social development is met beneficially. The production method of the enameled steel plate is suitable for industrialized production, and the preparation method is simple.

Description

technical field [0001] The invention relates to the technical field of metallurgical plates, in particular to an enamelled steel plate and a production method thereof. Background technique [0002] Enamel steel plate is a composite material made of high-quality steel and special functional inorganic non-metallic materials, which are enameled by a new electrostatic dry powder enamelling process and fired at high temperature. The obtained enamel products are widely used in household appliances, subway decoration and other fields due to their advantages of corrosion resistance, easy cleaning and beautiful appearance. [0003] Enamel steel directly affects the performance of enamelled steel plate. The pearlite in the internal structure of the steel decomposes into free carbon when the sintering temperature is high, which affects the performance and quality of the enamel steel plate. After sintering, the expansion and swelling appear, and the enamel surface appears cold burst, f...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C21D8/02
CPCC22C38/02C22C38/04C22C38/06C21D8/0226C21D8/0236C21D8/0273
Inventor 陆斌尚秀廷张秀青薛越华国龙刘哲詹卢刚孙长玉张帅贾瑞杰
Owner BAOTOU IRON & STEEL GRP
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