Method for preventing zinc flow lines from appearing in surface of galvanized strip steel

A strip steel and flow pattern technology, applied in hot-dip galvanizing process, coating, metal material coating process, etc., can solve problems such as zinc flow lines in galvanized strip steel, improve aesthetics and reduce zinc flow lines , to avoid the effect of zinc flow

Inactive Publication Date: 2018-01-09
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a method for avoiding zinc flow marks on the surface of galvanized steel strip, which solves the technical problem that zinc flow marks often appear on the surface of ultra-thin galvanized steel strip in the prior art, and realizes the avoidance of zinc flow marks on the surface of galvanized steel strip. Zinc flow lines appear on the surface of galvanized steel strip, thereby improving the technical effect of the aesthetics of galvanized steel strip

Method used

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  • Method for preventing zinc flow lines from appearing in surface of galvanized strip steel
  • Method for preventing zinc flow lines from appearing in surface of galvanized strip steel
  • Method for preventing zinc flow lines from appearing in surface of galvanized strip steel

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Embodiment 1

[0041] The present embodiment provides a kind of method that avoids the occurrence of zinc flow marks on the surface of galvanized steel strip, such as figure 1 shown, including:

[0042] Step S101: before the steel strip enters the zinc pot, adjust the temperature of the zinc liquid in the zinc pot.

[0043] Because the ultra-thin strip steel carries less heat before entering the zinc pot, and the cooling effect of the air knife airflow on the strip accelerates the solidification rate of the zinc liquid, resulting in obvious zinc flow defects in the ultra-thin strip steel. Since ultra-thin strip steel is mainly used for high-end home appliances after color coating, and zinc flow defects cannot be covered after color coating and affect the appearance, so it is necessary to overcome the flow defects of ultra-thin zinc.

[0044] As an optional implementation manner, step S101 includes: adjusting the temperature of the zinc liquid in the zinc pot to be 450°C-460°C.

[0045] In ...

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Abstract

The invention discloses a method for preventing zinc flow lines from appearing in the surface of galvanized strip steel. The method comprises the steps that before strip steel enters a zinc pot, the temperature of zinc liquid in the zinc pot is adjusted; according to the thickness of the strip steel, the pot inlet temperature of the strip steel is adjusted; the strip steel is controlled to enter the zinc pot to be subject to galvanizing. According to the method for preventing zinc flow lines from appearing in surface of galvanized strip steel, the technical effects that the zinc flow lines areprevented from appearing in the surface of the galvanized strip steel, and the attractiveness of the galvanized strip steel is improved are achieved.

Description

technical field [0001] The invention relates to the technical field of strip steel processing, in particular to a method for avoiding zinc flow marks on the surface of galvanized strip steel. Background technique [0002] With the sluggishness of the domestic steel market, product structure adjustment, specification development and expansion, and quality upgrading have become the main research directions of steel companies at this stage. my country's iron and steel enterprises are currently vigorously developing high-end products with high grades, high demands, and high returns. [0003] The ultra-thin products of the hot-dip galvanizing unit (that is, the ultra-thin galvanized steel strip, the thickness of which is less than 0.35mm) are mainly used in the back panels, side panels and panels of white goods such as washing machines, refrigerators, and air conditioners. The surface quality requirements of the products are compared At the same time, the market demand for such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C23C2/20
Inventor 李文波任新意肖激杨常生财李晓磊宋丹高慧敏张学范管红永过国俊董子亮马壮
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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