Hot-rolling high-strength medium plate for double-face enamel and manufacturing method thereof

A manufacturing method and high-strength technology, applied in the direction of manufacturing tools, heat treatment furnaces, heat treatment equipment, etc., can solve the problems that are not suitable for the production of medium and thick steel plates

Active Publication Date: 2016-02-17
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The technical solution disclosed in this Chinese patent document is suitable for the production of steel plates with a thickness of less than 5 mm, but not suitable for the production of medium-thick steel plates with a thickness of more than 5 mm

Method used

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  • Hot-rolling high-strength medium plate for double-face enamel and manufacturing method thereof
  • Hot-rolling high-strength medium plate for double-face enamel and manufacturing method thereof
  • Hot-rolling high-strength medium plate for double-face enamel and manufacturing method thereof

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Embodiment A1-A8

[0064] According to the following steps, the hot-rolled high-strength medium and thick plates for double-sided enamel in the embodiments of the present invention A1-A8 are manufactured (the mass percentages of each chemical element in the steel plates of each embodiment are as shown in Table 1, and the mass percentages of the steel plates of each embodiment Concrete process parameters are as shown in table 2):

[0065] 1) Smelting: smelting+vacuum degassing, adding alloying elements to the molten steel, and adjusting the alloying elements, removing harmful gases such as hydrogen in the steel, to ensure that the mass percentage of each chemical element in the steel plate is as shown in Table 1;

[0066] 2) Casting: continuous casting or die casting;

[0067] 3) Heating: the heating temperature is 1100-1250°C;

[0068] 4) Hot rolling: multi-pass rolling is carried out at the austenite recrystallization temperature and non-recrystallization temperature, the total reduction rate ...

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Abstract

The invention discloses a hot-rolling high-strength medium plate for double-face enamel. A base body of a microstructure of the medium plate is ferrite or a mixture of ferrite and pearlite. A Ti4C2S2 precipitated phase and a Ti(C,N) precipitated phase are distributed in the base body in a dispersed manner. The hot-rolling high-strength medium plate for double-face enamel comprises, by mass, 0.02-0.15% of C, 0.10-0.50% of Si, 0.3-1.5% of Mn, 0.006-0.035% of S, 0.01-0.08% of Al, 0.006-0.015% of N, 0.08-0.20% of Ti, 0.02-0.10% of Cu and the balance iron and other inevitable impurities. The hot-rolling high-strength medium plate for double-face enamel has the high strength and ductility, and meanwhile the steel plate has the good enameling performance and the good fish scaling resistance.

Description

technical field [0001] The invention relates to a steel material and a manufacturing method thereof, in particular to a steel for enamelling and a manufacturing method thereof. Background technique [0002] At present, hot-rolled medium-thick steel plates for double-sided enamel are mainly used in the production of large-scale water treatment facilities, chemical facilities, environmental protection facilities and other manufacturing fields. For example, steel for anaerobic fermentation assembly tanks, enamel steel plate biogas digesters or assembled enamel steel plate granary assembly tank steel. The main purpose of the hot-rolled medium-thick steel plate for double-sided enamelling is as the base plate of enamelled steel for such assembled tanks. [0003] The processing steps of enamelled steel for assembled tanks are as follows: first, bend the steel plate with a certain radian, then pickle and sandblast the steel plate to remove scale and rust on the surface of the stee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/14C22C38/16C22C38/02C22C38/12C21D8/02
CPCC21D6/005C21D6/008C21D8/0226C21D8/0263C21D2211/004C21D2211/005C21D2211/009C22C38/02C22C38/04C22C38/12C22C38/14C22C38/16C22C38/32B05D2202/10B05D2252/10C21D6/02C21D8/0205C21D8/0278C21D9/46C22C38/001C22C38/06C22C38/18C23D5/00C21D8/02
Inventor 王双成孙全社梅冰王俊凯张志超
Owner BAOSHAN IRON & STEEL CO LTD
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