Cold-rolled enamelled steel and production method thereof

A production method and technology for enamel steel, applied in the field of cold-rolled enamel steel, can solve the problem of high smelting cost, and achieve the effects of excellent surface quality, good economic benefits, and good market application prospects

Inactive Publication Date: 2015-11-25
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent is mainly aimed at steel with ultra-low carbon steel composition, and the smelting cost is relatively high

Method used

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  • Cold-rolled enamelled steel and production method thereof
  • Cold-rolled enamelled steel and production method thereof
  • Cold-rolled enamelled steel and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Select the chilled steel coil with the chemical composition of Example 1 in Table 1 below for continuous annealing production, the thickness is 1.8 mm, the hot rolling coiling temperature is 745 ° C, the cold rolling reduction rate is 75%, and the annealing temperature is shown in Table 2 shown. The steel running speed in the annealing furnace is 93m / min, and the flat elongation rate is 1.5%. The transverse mechanical properties of the finished product are shown in Table 3, and the microstructure is as follows: figure 1 shown. Enameling trial production was carried out, and the coating has good adhesion and no scaling phenomenon. The national standard GB / T29515-2013 is used for hydrogen permeation test, and its TH value is 54.45min / mm 2 .

Embodiment 2

[0036] Select the chilled steel coil with the chemical composition of Example 2 in Table 1 below for continuous annealing production, the thickness is 1.8mm, the hot rolling coiling temperature is 740°C, and the cold rolling reduction rate is 75%. The annealing temperature is as shown in the table 2. The steel running speed in the annealing furnace is 89m / min, and the flat elongation rate is 1.5%. The transverse mechanical properties of the finished product are shown in Table 3, and the microstructure is as follows: figure 2 shown. Enameling trial production was carried out, and the coating has good adhesion and no scaling phenomenon. The national standard GB / T29515-2013 was used for the hydrogen permeation test, and the TH value was 59.16min / mm2.

Embodiment 3

[0038] Select the chilled steel coil with the chemical composition of Example 3 in Table 1 below for continuous annealing production, the thickness is 0.7 mm, the hot rolling coiling temperature is 737 ° C, the cold rolling reduction rate is 75%, and the annealing temperature is shown in Table 2 shown. The steel running speed in the annealing furnace is 163m / min, and the flat elongation rate is 0.9%. The transverse mechanical properties of the finished product are shown in Table 3. Enameling trial production is carried out, and the coating has good adhesion and no scales.

[0039] Chemical composition of chilled steel in Table 1 embodiment 1~3

[0040]

[0041] The annealing temperature of steel in table 2 embodiment 1~3

[0042] serial number

Soaking section (℃)

End point of slow cooling (℃)

Rapid cooling end point (℃)

Over-aging period (℃)

Example 1

833

688

337

371

Example 2

828

682

375

379

Ex...

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Abstract

The invention belongs to the technical field of cold-rolled plate and strip production, and specifically relates to a method for producing cold-rolled enamelled steel by a continuous annealing production process. Cold-rolled enamelled steel is composed of the following ingredients in percentage by weight: 0.01-0.07% of C, not greater than 0.05% of Si, 0.10-0.60% of Mn, not greater than 0.030% of P, not greater than 0.025% of S, 0.015-0.070% of Als, not greater than 0.01% of N, 0.001-0.01% of B and the balance Fe and inevitable impurities. The cold-rolled enamelled steel prepared by the method disclosed by the invention has the characteristics of being excellent in surface quality, good in forming property and fish scaling resistance, good in economic benefits and the like; the continuous annealing method is used for producing the cold-rolled enamelled steel, and is simple in process and low in cost, the cooling speed of a rapid-cooling section of a steel plate is increased, and lots of cementites are separated out from the steel plate as hydrogen storage traps, thus improving the fish scaling resistance and the like of the steel plate.

Description

technical field [0001] The invention belongs to the technical field of cold-rolled strip production, and in particular relates to a method for producing cold-rolled enamelled steel by continuous annealing. Background technique [0002] Enamel products are a composite material made by melting the electrodeless oxide paint (enamel) onto the surface of the enamel steel substrate by melting and sintering. It is wear-resistant, corrosion-resistant, high-temperature resistant, easy to wash, non-toxic and hygienic. And other characteristics, so it is widely used in the manufacture of household utensils, sanitary ware, water heater liners, chemical reaction tanks and building decorative panels. The enamel steel plate needs to meet the mechanical forming and processing performance required by the enamel products, and has good adhesion to the enamel, and there are no defects such as scale explosion, pinholes, and air bubbles. At present, the application of enamel products continues t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/06C21D8/02
Inventor 王礞郑之旺谢磊赵国英许哲峰郑昊青余灿生张功庭王敏莉
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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