Improved container plate producing process

A production method and container technology are applied in the field of thin slab continuous casting and rolling process to produce hot-rolled container plates, which can solve the problems that thick-gauge products are prone to cold working cracks, the product strength cannot be reached, and the products cannot be produced, and improve cold working. performance, the effect of increasing the tapping temperature and finishing temperature, and increasing the strength

Inactive Publication Date: 2007-06-06
GUANGZHOU PEARL RIVER STEEL & IRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention patent discloses a method for producing container plates, but in practice, the strength of some products produced by this method cannot reach 480MPa, which cannot meet the relevant regulations in JIS G3125-1987 "Standards for Atmospheric Corrosion Resistance Steel"; thick gauge products It is prone to cold working cracks, the proportion of thin products is low, and products with a thickness below 1.6mm cannot be produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The components of the finished container plate produced in Example 1 are C: 0.033-0.035%, Si: 0.30-0.32%, Mn: 0.58-0.60%, P: 0.07-0.08%, S: 0.003%, Cu: 0.25-0.26%, Cr: 0.30~0.32%, Ni: 0.10~0.12%, Ti: 0.02~0.03%; tundish temperature 1540~1555℃, slab thickness 56mm, casting speed 4.0~4.5m / min, furnace temperature 1160~1170℃, The final rolling temperature is 860-880°C, and the coiling temperature is 530-550°C.

[0022] Thickness (mm)

[0023] Thickness (mm)

[0024] In the above embodiment 1, the proportion of ≤2.0mm products can reach 72.06%.

Embodiment 2

[0026] The components of the finished container plate produced in Example 2 are C: 0.063-0.065%, Si: 0.48-0.51%, Mn: 0.25-0.26%, P: 0.10-0.11%, S: 0.002%, Cu: 0.38-0.40%, Cr: 0.58~0.60%, Ni: 0.28~0.29%, Ti: 0.03~0.04%; tundish temperature 1550~1565℃, slab thickness 60mm, casting speed 4.0~4.5m / min, furnace temperature 1190~1200℃, The final rolling temperature is 900-920°C, and the coiling temperature is 640-650°C.

[0027] Thickness (mm)

[0028] Thickness (mm)

[0029] In the above embodiment 2, the proportion of ≤2.0mm products can reach 72.31%.

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Abstract

The present invention discloses one kind of improved container plate producing process. The production process is one thin billet continuously casting and rolling process, in which 55-100 mm thick casting blank is adopted to raise the compression ratio, Ti not more than 0.05 % is added to improve the cold machining performance and ensure tensile strength greater than 490 MPa, and the initial rolling temperature, the final rolling temperature and the winding temperature are regulated to decrease the thickness of the sheet, up to 1.4 mm.

Description

technical field [0001] The invention relates to the technical field of production of container steel, in particular to a process for producing hot-rolled container plates by adopting thin slab continuous casting and rolling processes. Background technique [0002] Container plate is a kind of atmospheric corrosion-resistant steel specially used in container manufacturing industry. This product requires high tensile strength (above 490MPa), good formability, atmospheric corrosion resistance and welding performance, and is required to be able to Various thickness specifications from 1.4 to 6.0mm are provided as a complete set, and the proportion of products below 2.0mm must reach more than 50% for a matching box. [0003] Guangzhou Zhujiang Iron and Steel Co., Ltd. applied for an invention patent (patent number: 01114640.0) entitled "A Method for Producing Container Plates" on April 20, 2001, and was authorized on January 12, 2005. The invention patent discloses a method for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/46C22C38/50B22D11/16C21D11/00C21D9/70B21B37/74
Inventor 毛新平柴毅忠张若生徐志如李轲新钟志永王进步沈训良洪兵雄张武彬
Owner GUANGZHOU PEARL RIVER STEEL & IRON
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