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Enamel steel sheet for direct glazing and manufacturing method thereof

A manufacturing method and direct technology, applied in the field of steel plates, can solve the problems of not being suitable for manufacturing enamel steel products, increasing production costs, etc.

Active Publication Date: 2015-07-15
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the manufacturing method of the enamelled steel substrate disclosed in the above-mentioned patent documents will not only obviously increase the production cost, but also is not suitable for manufacturing enamelled steel products with extremely high requirements on pinhole defects.

Method used

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  • Enamel steel sheet for direct glazing and manufacturing method thereof
  • Enamel steel sheet for direct glazing and manufacturing method thereof
  • Enamel steel sheet for direct glazing and manufacturing method thereof

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Embodiment Construction

[0065] The enamelled steel plate for direct glazing and its manufacturing method described in the present invention will be further explained and illustrated in conjunction with the accompanying drawings and specific examples. However, this explanation and illustration do not constitute inappropriate technical solutions of the present invention. limited.

[0066] Manufacture the steel plate for enamelling among the embodiment A1-A8 according to the following steps:

[0067] 1) molten iron pretreatment;

[0068] 2) Smelting and refining: decarburization, dephosphorization, and removal of other residual elements and harmful gases are achieved through the top-bottom combined blowing converter, further removal of harmful gases and residual elements through refining, addition of alloy elements, and oxidation can also be added if necessary Iron powder, make the chemical composition of molten steel reach requirement, control the mass percent distribution ratio of each chemical eleme...

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Abstract

The invention discloses an enamel steel sheet for direct glazing, which comprises the following chemical elements in percentage by mass: 0.0005-0.002% of C, 0.24-0.50% of Mn, 0.021-0.035% of S, 0.025-0.055% of O, at most 0.010% of Si, at most 0.015% of P, at most 0.010% of Al, at most 0.003% of N, and the balance of Fe and other inevitable impurities, wherein 0<=Mn-1.7*O+3.4*S<=0.30%, and 2.7*O+4.4*S>=0.14%. The invention also discloses a manufacturing method of the enamel steel sheet for direct glazing, which comprises the following steps: (1) molten iron pretreatment; (2) smelting and refining; (3) casting; and (4) hot rolling. The enamel steel sheet for direct glazing has excellent surface characteristics and favorable inherent quality.

Description

technical field [0001] The invention relates to a steel plate, in particular to a steel plate for enamelling. The invention also relates to a manufacturing method of the steel plate for enameling. Background technique [0002] The traditional enamelling technology, especially for one-time enamel or direct-on enamel (direct-on) process, requires strict pretreatment on the steel plate surface before enamelling, pretreatment includes degreasing, pickling and nickel-plating (Nickel-plating) ) and other related processes, the purpose of which is to remove the residue on the surface of the steel plate, improve the surface characteristics, and improve the enamelling performance of the steel plate. [0003] In recent years, enamelling technology and enamelling process have continuously achieved innovation and development, especially for the low cost of glaze and the simplification of pre-treatment process, which is concentrated in the update and higher performance of enamelled stee...

Claims

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Application Information

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IPC IPC(8): C22C38/04C22C38/06C22C38/12C22C38/14C22C38/16C22C38/08C22C38/18C22C38/20C22C38/22C22C38/40C22C38/42C22C38/44C21D8/02
CPCY02P10/20
Inventor 孙全社王俊凯林长青刘玉章张志超
Owner BAOSHAN IRON & STEEL CO LTD
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