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Electroplated tin steel plate for beverage can and production method of electroplated tin steel plate

A technology of electroplating tin and beverage cans, applied in the field of iron-based alloys, which can solve the problems of poor strength stability, low elongation after fracture, high strength, etc., and achieve the effects of improved performance, good processing and forming performance, and simple production process

Active Publication Date: 2018-01-05
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electroplated tinned steel plate for beverage cans and its production method, which mainly solves the problems of high strength, poor strength stability, low elongation after breaking, and easy cracking in the can making process of existing electroplated tinned steel plates used for beverage cans technical issues

Method used

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  • Electroplated tin steel plate for beverage can and production method of electroplated tin steel plate

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Embodiment Construction

[0035] Below in conjunction with Examples 1-4, the present invention will be further described, as shown in Table 1-Table 4.

[0036] Table 1 is the chemical composition (by weight percentage) of the steel of the embodiment of the present invention, and the balance is Fe and unavoidable impurities.

[0037] Table 1 Chemical composition of the steel of the embodiment of the present invention, unit: weight percent.

[0038]

[0039]

[0040] Through converter smelting and RH furnace refining, the molten steel with chemical composition meeting the requirements is obtained, and the molten steel is continuously casted by Ar protection throughout the whole process to obtain a continuous casting slab with a thickness of 210-230mm, a width of 800-1300mm, and a length of 5000-10000mm.

[0041] The cut-to-length slab produced by steelmaking is sent to the heating furnace for reheating, and after being released from the furnace to remove phosphorus, it is sent to the continuous hot...

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Abstract

The invention relates to an electroplated tinned steel plate for beverage cans and a production method thereof, which mainly solves the technical problems of high strength, poor strength stability, low elongation after breaking and easy cracking in the can making process of existing electroplated tinned steel plates used for beverage cans . An electroplated tin-plated steel plate for beverage cans provided by the present invention, the weight percentage of the chemical composition of the substrate: C: 0.01% to 0.03%, Si≤0.03%, Mn: 0.25% to 0.35%, P≤0.025%, S≤0.015 %, Alt: 0.045% to 0.065%, Cr: 0.11% to 0.16%, and the balance is Fe and unavoidable impurity elements. The yield strength of the steel plate is 300MPa-330MPa, the tensile strength is 400MPa-430MPa, the hardness value is 55‑58HR30Tm, and the elongation after fracture is A50≥28%. The invention is mainly used in the field of beverage can packaging.

Description

technical field [0001] The invention relates to an electro-tinned steel plate, in particular to an electro-tinned steel plate for beverage cans and a production method thereof, belonging to the technical field of iron-based alloys. Background technique [0002] At present, the electroplated tin plate for beverage cans is generally MR T-4CA or MR T-5CA. The carbon content of this steel is relatively high, and the range of carbon content is also wide. The carbon content is controlled at 0.06-0.15%. The steel contains about 0.5% manganese metal. In the production process of the steel, the high carbon and manganese content plus the large fluctuation of carbon and manganese content lead to high strength of the material, low plasticity and toughness, and stable properties such as yield strength and elongation after fracture. The performance is also poor, which increases the difficulty of controlling the equipment for producing beverage cans. During the production process, the sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/06C22C38/18C21D8/02C21D1/26
Inventor 韩孝永穆海玲王海军
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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