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A cold-rolled tin plate for easy-open end and production method thereof

A production method and technology of tinplate, which are applied in the field of cold-rolled tinplate for easy opening and its production, can solve the problems of cracking and low yield strength, and achieve simple process, excellent stamping and forming performance, and good plate shape. Effect

Active Publication Date: 2016-12-07
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a cold-rolled tinplate for easy-open ends and its production method, which mainly solves the problem of cracking and yield strength of existing cold-rolled tinplates for easy-open ends in the stamping process of manufacturing easy-open ends. low technical issues

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  • A cold-rolled tin plate for easy-open end and production method thereof
  • A cold-rolled tin plate for easy-open end and production method thereof
  • A cold-rolled tin plate for easy-open end and production method thereof

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Embodiment Construction

[0033] This implementation selects the product specification as 0.2mm*860mm, below in conjunction with embodiment 1 ~ 4 and comparative example - Chinese patent application number is disclosed in the patent application of CN201310171001.8, the present invention is further described, as table 1 ~ table 4 shown.

[0034] Table 1 The chemical composition of the present invention (% by weight), the balance is Fe and unavoidable impurities.

[0035] Continuous casting slabs meeting the required chemical composition are obtained through converter smelting, with a thickness of 210-230mm, a width of 800-1300mm, and a length of 5000-10000mm. Compared with the present invention, the C content of the comparative example is lower, the RH refining furnace decarburization treatment must be carried out in the production process, and the steel contains higher Mn elements, in addition, alloy elements such as B and Ti need to be added to the steel , the production process is complex and the pr...

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Abstract

The invention relates to a cold-rolled tin plate for an easy-to-open lid and a production method of the cold-rolled tin plate, and mainly aims at solving the technical problems that an existing cold-rolled tin plate for the easy-to-open lid cracks in the stamping and forming processes of manufacturing the easy-to-open lid, and is low in yield strength. The production method sequentially comprises the following steps: smelting according to the ingredients; carrying out molten iron desulfuration and converter top-bottom composite blowing, blowing argon from the ladle bottom or refining by an LF furnace; blowing Ar to protect pouring in the whole course; heating by virtue of a slab heating furnace; descaling, roughly rolling, carrying out finish rolling, and rolling to obtain hot-rolled steel coils; decoiling again; and carrying out acid pickling, cold rolling, vertical continuous annealing furnace annealing, electrotinning and rolling to obtain the finished product, wherein the precision rolling and finish rolling temperature is 820-850 DEG C, the hot rolling and coiling temperature is 630-660 DEG C, the cold rolling reduction ratio is 85%-90%, the temperature range of cold-rolled strip steel in a hard state in a soaking zone of a vertical continuous annealing furnace is 570-590 DEG C, and the soaking time of the strip steel in the vertical continuous annealing furnace is 30-45s. The cold-rolled tin plate is mainly used for fabricating the easy-to-open lid.

Description

technical field [0001] The invention relates to a cold-rolled tinplate and a production method thereof, in particular to a cold-rolled tinplate for an easy-open cover and a production method thereof. Background technique [0002] The tinplate for easy open end has high requirements on the strength, hardness and performance uniformity of the material. During the production process of easy open end, if the strength is lower than the specified requirement, the strength of the whole batch of steel coils cannot be kept uniform and stable. Crack defects are prone to occur in the subsequent cold deformation process such as stamping, which reduces the yield and increases production costs. At present, most manufacturers generally use SPCC series steel grades when selecting steel for easy-open ends, but the carbon content of SPCC has a wide range, and the carbon content is controlled at 0.01~0.09%, which meets the requirements, and the carbon content fluctuates greatly, resulting in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/04C22C33/04C21D8/04
Inventor 韩孝永穆海玲许姣姣
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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