Method for producing packaging steel

A technology for packaging and steel plates, used in the manufacture of tools, transportation and packaging, chemical instruments and methods, etc.

Active Publication Date: 2014-08-27
THYSSENKRUPP AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, many known dual-phase steels have such high strengths that they cannot be cold-rolled with the equipment normally used to manufacture packaging steels

Method used

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  • Method for producing packaging steel
  • Method for producing packaging steel

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Embodiment Construction

[0017] Elaborate the present invention according to an embodiment below:

[0018] In order to produce the steel sheet according to the invention as an example of packaging steel, the steel strip produced by continuous casting and hot rolled and wound on the coil consists of a steel with the following composition:

[0019] -C: 0.1% max;

[0020] -N: 0.02% max;

[0021] - Mn: maximum 0.5%, preferably less than 0.4%;

[0022] - Si: maximum 0.04%, preferably less than 0.02%;

[0023] - Al: maximum 0.1%, preferably less than 0.05%;

[0024] - Cr: maximum 0.1%, preferably less than 0.05%;

[0025] -P: 0.03% max,

[0026] -Cu: 0.1% max,

[0027] -Ni: 0.1% max,

[0028] -Sn: 0.04% max,

[0029] -Mo: 0.04% max,

[0030] -V: 0.04% max;

[0031] - Ti: maximum 0.05%, preferably less than 0.02%;

[0032] - Nb: maximum 0.05%, preferably less than 0.02%;

[0033] -B: 0.005% max

[0034] - and other alloy constituents, including impurities: max. 0.05%;

[0035] - The rest is iron....

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Abstract

The invention relates to a method for producing packaging steel consisting of a cold-rolled steel sheet made of unalloyed or low-alloy steel having a carbon content of less than 0.1%. In order to provide high-strength packaging steel that has good formability and high corrosion resistance and can be produced in as energy-saving a manner as possible, the steel sheet according to the invention is first coated with a metallic coating and then annealed in a recrystallising manner at a heating rate of more than 75 K / s and preferably more than 100 K / s to temperatures of more than 700 DEG C, such that the metallic coating melts. The coated and annealed steel sheet is then quenched to normal temperature at a cooling rate of at least 100 K / s.

Description

technical field [0001] The invention relates to a method for producing packaging steel from a cold-rolled steel sheet according to the preamble of claim 1 . Background technique [0002] Thin-walled steel products in the form of plates or strips and a method for their production are known from CH 469 810, which can be used for the production of tinplate with higher strength. Steel articles made of unalloyed steel with a carbon content of 0.03% by weight to 0.25% by weight and having a manganese content of 0.2% by weight to 0.6% by weight and a silicon content of less than 0.011% by weight . The steel article is characterized by a microstructure consisting at least in part of martensite and ferrite and having a 2 Tensile strength and elongation at break of at least 1.5%. To develop this property, the steel product is first heated in a furnace to A 1 point and then quenched in a water bath. [0003] Higher demands are increasingly placed on the properties of the metallic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/02C22C38/00C23C2/26C23C2/28C23C2/06
CPCC23C2/28C21D2211/008C22C38/22C23C2/06C22C38/54B32B15/015C22C38/04C21D1/42C22C38/24C22C38/001C22C38/26Y10T428/12799B32B15/012C22C38/48Y10T428/12757C22C38/20B65D1/12Y10T428/12972C22C38/44Y10T428/12854C22C38/06C22C38/004B32B15/01C21D2211/005C21D1/26C22C38/32C21D2211/001C22C38/008C22C38/28C21D8/0273C22C38/002B32B15/013C21D8/0236C21D9/52C22C38/18C22C38/02C22C38/46C23F17/00Y10T428/12C22C38/42C21D9/46C23C2/26C22C38/50Y10T428/12722C21D2211/002C21D1/18Y02P10/25
Inventor 阿妮卡·塞斯尼赫尔穆特·奥伯霍费尔马丁·施卢普迪尔克·马图舍克赖纳·绍尔
Owner THYSSENKRUPP AG
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