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Enamel steel with scaling resistance and manufacturing method thereof

A manufacturing method, enamelled steel technology, applied in the direction of temperature control, etc., can solve the problems of enameled steel smelting cost and production control difficulty, and achieve good anti-scale explosion performance, reduce smelting cost, and good formability

Inactive Publication Date: 2014-01-01
WUHAN IRON & STEEL (GROUP) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The enamelled steels manufactured by the above methods all have good scale explosion resistance, but it must be added by adding B, Ti, Cu, Cr, Ni and other alloying elements to the steel, and some also need to be precisely controlled by C, S, N, Ti. The content and ratio of elements such as enamel will inevitably lead to an increase in the cost of enamel steel smelting and the difficulty of production control

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  • Enamel steel with scaling resistance and manufacturing method thereof
  • Enamel steel with scaling resistance and manufacturing method thereof
  • Enamel steel with scaling resistance and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this example, the enamelled steel with scale explosion resistance is made of the following components and weight percentages: C: 0.0020%, Mn: 0.41%, Si: 0.0050%, P: 0.012%, S: 0.012%, Als: 0.003%, O: 0.018%, and the balance is Fe and other unavoidable impurities.

[0023] The manufacturing method of enamelled steel with anti-scaling explosion performance comprises the following steps in sequence: molten iron pretreatment, converter smelting, refining, continuous casting, hot continuous rolling, pickling, cold continuous rolling, annealing, finishing, wherein, the hot The heating temperature in the continuous rolling process is 1200°C, the final rolling temperature is 900°C, and the coiling temperature is 750°C; the cold rolling reduction in the cold continuous rolling process is 60%; the annealing process is bell annealing , the annealing temperature is 750°C, the annealing time is 24h, and the flat elongation is 0.3%.

[0024] After inspection, the yield strength R...

Embodiment 2

[0026] This example is basically the same as Example 1, except that the enamelled steel with scale explosion resistance is made of the following components and weight percentages: C: 0.0028%, Mn: 0.36%, Si: 0.0089%, P: 0.015%, S: 0.011%, Als: 0.003%, O: 0.013%, and the balance is Fe and other unavoidable impurities.

[0027] A method for manufacturing enamelled steel with scale explosion resistance, wherein the heating temperature in the hot continuous rolling process is 1150°C, the final rolling temperature is 860°C, and the coiling temperature is 700°C; in the cold continuous rolling process The cold rolling reduction rate is 65%.

[0028] After inspection, the steel plate yield strength R p0.2 is 147MPa, the tensile strength R m 290MPa, elongation A 80mm It is 42.8%, the isotropic plastic index r value is 2.1, the work hardening index n value is 0.20, has good formability, and the hydrogen permeation time is 18min / mm.

Embodiment 3

[0030] This example is basically the same as Example 1, except that the enamelled steel with scale explosion resistance is made of the following components and weight percentages: C: 0.0031%, Mn: 0.45%, Si: 0.0083%, P: 0.012%, S: 0.015%, Als: 0.008%, O: 0.020%, the balance is Fe and other unavoidable impurities.

[0031] A method for manufacturing enamelled steel with scale explosion resistance, wherein the heating temperature in the hot continuous rolling process is 1250°C, the final rolling temperature is 920°C, and the coiling temperature is 650°C; in the cold continuous rolling process The cold rolling reduction rate is 65%; the annealing process is continuous annealing, the annealing temperature is 840°C, the annealing time is 60s, and the flat elongation is 0.4%.

[0032] After inspection, the steel plate yield strength R p0.2 162MPa, tensile strength R m 298MPa, elongation A 80mm It is 41.1%, the r value of the isotropic plasticity index is 1.9, the work hardening in...

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Abstract

The invention discloses enamel steel with scaling resistance. The enamel steel is prepared from the following components in percentage by weight: 0.0020-0.0050% of C, 0.30-0.50% of Mn, 0.0050-0.0100% of Si, 0.010-0.015% of P, 0.011-0.020% of S, 0-0.010% of Als, 0.011-0.020% of O and the balance of Fe and other inevitable impurities. A manufacturing method sequentially comprises the following steps: pretreatment of molten iron, smelting by a converter, refining, continuous casting, hot continuous rolling, acid washing, cold continuous rolling, annealing and finishing, wherein the heating temperature for hot continuous rolling is 1150-1250 DEG C, the finish rolling temperature is 860-920 DEG C, the winding temperature is 650-750 DEG C, and the cold rolling reduction rate of cold continuous rolling is 60-80%. The enamel steel disclosed by the invention has no scaling phenomenon and low production difficulty, and is suitable for being applied to the technical field of iron and steel smelting.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to an enamelled steel with anti-scale explosion performance and a manufacturing method thereof. Background technique [0002] Enamel steel is mainly used in kitchen utensils, sanitary ware, water heater liners, industrial anti-corrosion equipment and building panel decoration, etc. It has the characteristics of beautiful appearance and strong corrosion resistance. In order to ensure the surface quality after enameling, it is required that the enameled steel plate must have good Scale burst performance. In recent years, with the development of enamel technology, electrostatic dry enamelling has become the mainstream process. This process has high requirements on the anti-scale explosion performance of steel plates. Therefore, it is necessary to improve the anti-scale explosion performance of enamelled steel through chemical composition design and production process co...

Claims

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Application Information

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IPC IPC(8): C22C38/06C21D1/26B21B37/74
Inventor 宋乙峰涂元强田德新蔡捷白会平黄道兵杜蓉
Owner WUHAN IRON & STEEL (GROUP) CORP
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