Chrome-plated board, manufacturing method thereof and crown cap

A manufacturing method and chrome plating technology, applied in the field of steel rolling, can solve the problems of unstable performance, reduced strip elongation, and difficulty in meeting the requirements, and achieve the effects of enhancing cold forming performance, shortening production processes, and reducing production costs.

Active Publication Date: 2016-08-10
ZHANGJIAGANG YANGTZE RIVER COLD ROLLED PLATE CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the chrome-plated sheet produced by this process method has two shortcomings: 1. The bell-type annealing performance is not uniform, and the hardness requirement of ±3 cannot be achieved, which is difficult to meet the current requirements of high-speed punching machines in the printing iron can industry; 2. After secondary cold rolling, the elongation of the strip is greatly reduced, and the processing and forming perfor

Method used

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  • Chrome-plated board, manufacturing method thereof and crown cap
  • Chrome-plated board, manufacturing method thereof and crown cap
  • Chrome-plated board, manufacturing method thereof and crown cap

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Embodiment Construction

[0032] The mass percent of the chemical composition of the high-hardness chrome-plated sheet provided in this example is: C: 0.05-0.09%, Si: 0.005-0.02%, Mn: 0.2-0.6%, Al: 0.02-0.06%, P≤0.02%, S ≤0.015%, N≤0.006%, the rest is Fe and unavoidable impurities

[0033] The effect of alloying elements contained in the application and the selection specific analysis instructions of its consumption are as follows:

[0034] C: 0.05-0.09%

[0035] In the high-hardness chromium plating base, C is an important strengthening element, which ensures the strength of the strip through solid solution strengthening and precipitation strengthening. However, as the carbon content increases, the stamping performance of the strip will deteriorate. In order to ensure the hardness of the chrome-plated plate and avoid steelmaking in the peritectic region (C: 0.09-0.13%), the high-hardness chrome-plated substrate of the present invention controls the C content between 0.05-0.09%.

[0036] Si: 0.005-0...

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Abstract

The invention discloses a chrome-plate board, a manufacturing method thereof and a crown cap. The chrome-plated board is composed of, by weight, 0.05-0.09% of C, 0.005-0.02% of Si, 0.2-0.6% of Mn, 0.02-0.06% of Al, 0-0.02% of P, 0-0.015% of S, 0-0.006% of N and the balance Fe and inevitable impurities. The manufacturing method of the chrome-plated board sequentially comprises the steps of steel-making, hot rolling, acid pickling and cold-rolling, continuous annealing and flattening, wherein continuous annealing is conducted at the temperature of 580-600 DEG C for 60-100 s. According to the chrome-plated board, the manufacturing method thereof and the crown cap, a cold-rolled sheet is made to be in an intermediate annealing state by adjusting the annealing temperature in the continuous annealing process, and part of non-recrystallization structures are reserved. In this way, the strength grade of band steel is guaranteed, and meanwhile the band steel is made to have certain ductility, so that the deformation capacity of the band steel in the stamping process is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular relates to a chrome-plated plate, a manufacturing method thereof, and a crown cover. Background technique [0002] Due to its good sealing performance, the crown cap can keep the pressure tightly for a long time without changing the quality and taste, so it is widely used in industries such as glass bottled beer and carbonated beverages, among which the beer industry is the main one. The crown cover belongs to stamping type tinplate, generally adopts T4 material with a thickness of 0.24-0.3mm and a hardness of HR30Tm of 61±3. There are two types of surface coatings: tin plating (SPTE) and chrome plating (TFS). With the development of the food packaging industry, it is proposed to reduce the thickness and increase the strength of the crown cap, and use low-cost chrome plating (TFS) instead of tin plating (SPTE). [0003] In response to this requirement, the process route ...

Claims

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Application Information

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IPC IPC(8): C22C38/04C22C38/02C22C38/06C21D8/02C21D1/26B65D41/12
CPCB65D41/12C21D1/26C21D6/005C21D8/0226C21D8/0236C21D8/0242C21D8/0247C22C38/02C22C38/04C22C38/06
Inventor 吴圣杰王峰汤茜李化龙
Owner ZHANGJIAGANG YANGTZE RIVER COLD ROLLED PLATE CO LTD
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