CN102181811B - Process method for hot-dipping aluminized and galvanized silicon plate - Google Patents

Abstract

The invention discloses a process method for a hot-dipping aluminized galvanized silicon plate. The method comprises the following steps of: preparing a plating solution; placing the plating solution in a pre-melting pot, and heating the plating solution by using a 300KW electromagnetic induction body to 600 DEG C, and stirring by using argon, so that components are uniformly mixed; testing after the stirring to detect the contents of zinc and aluminum in the plating solution; controlling the content of the aluminum to be not less than an upper limit of 48 percent, and controlling the content of the zinc to be 46 to 50 percent; and controlling a speed of a production line to be 120 to 160 m/min in the production process. The invention has the advantages of improving the alloy compositions of an aluminizing and galvanized plating solution so that the solution can takes the self advantages better, lowering the cost and improving the anti-oxidant capability. By improving equipment, the heating capacity is increased, thus the components are more uniform and stable; and an advanced German spectrum analyzer is adopted to test and analyze the alloy elements.

Description

The process method of hot dip aluminum plating zinc silicon plate

Technical field

The present invention relates to a kind of process method of hot dip aluminum plating zinc silicon plate.

Background technology

Because traditional galvanized sheet cost is high, resistance to corrosion is poor; Easily oxidation is commonly called as " white rust ", use comparatively speaking non-ferrous metal---zinc is more than aluminium zinc; The density of zinc and the density of aluminium zinc are different, need use the heating of 500KW ruhmkorff coil to galvanizing kettle in the production process.So both cause the waste of resource, caused the consumption of the energy again, and caused production cost high.Solve this key problem in technology so seek a kind of good method.

Summary of the invention

To structural deficiency in the prior art, the purpose of this invention is to provide a kind of process method of hot dip aluminum plating zinc silicon plate, be beneficial to strengthen aluminium zinc silicon at steel-sheet sticking power, avoided the surface imperfection of product, improved quality product.

For realizing above-mentioned purpose, the technical scheme that the present invention adopts provides a kind of process method of hot dip aluminum plating zinc silicon plate, and this method includes following steps:

1. the composition of preparing this plating bath of plating bath % by weight is Al 48%-52%, Cu 0.12% ± 0.02%, Pb 0.011% ± 0.002%, Sn 0.0058% ± 0.002%, Cd 0.0014% ± 0.0005%, Fe＞0.24% ± 0.02%, Mg 0.192% ± 0.02%, Mn 0.0048% ± 0.002%, Si＞0.0624% ± 0.015%, Zn 48.46% ± 2%;

Above-mentioned solution composition is placed in the fritting pot, adopt 300KW electromagnetic induction body that plating bath is heated, Heating temperature to 600 ℃ uses argon gas to stir simultaneously, and each composition of above-mentioned plating bath is mixed;

2. the plating bath after 1. step fully being stirred is chemically examined, and detects the content of zinc, aluminium in the plating bath, the content of aluminium is controlled at is not less than the upper limit 48%, and the content of zinc is controlled at 46%-50%;

3. in the production process of hot dip aluminum plating zinc silicon plate, the travelling speed of production line is controlled at 120-160m/min.

Effect of the present invention is to improve the alloy ingredient of aluminum-zinc alloy plating bath, makes it better to exert advantages of oneself, and reduces cost, improves resistance of oxidation.Improve equipment, change the 500KW load coil, improve heating efficiency, make it composition more evenly, more stable, through the state-of-the-art spectrum analyzer of Germany, be used for the test and the analysis of alloying element.

Embodiment

In conjunction with accompanying drawing and embodiment the process method of hot dip aluminum plating zinc silicon plate of the present invention is explained.

The process method of dip calorizing zinc silicon plate of the present invention combines experiences more both domestic and external, to the transformation of aluminium content ratio and equipment, has done lot of test, finally forms large-scale production.

The process method of a kind of hot dip aluminum plating zinc silicon plate of the present invention, this method includes following steps:

1. the composition of preparing this plating bath of plating bath % by weight is Al 48%-52%, Cu 0.12% ± 0.02%, Pb 0.011% ± 0.002%, Sn 0.0058% ± 0.002%, Cd 0.0014% ± 0.0005%, Fe＞0.24% ± 0.02%, Mg 0.192% ± 0.02%, Mn 0.0048% ± 0.002%, Si＞0.0624% ± 0.015%, Zn 48.46% ± 2%;

Above-mentioned solution composition is placed in the fritting pot, adopt 300KW electromagnetic induction body that plating bath is heated, Heating temperature to 600 ℃ uses argon gas to stir simultaneously, and each composition of above-mentioned plating bath is mixed;

2. the plating bath after 1. step fully being stirred is chemically examined, and detects the content of zinc, aluminium in the plating bath, the content of aluminium is controlled at is not less than the upper limit 48%, and the content of zinc is controlled at 46%-50%;

3. in the production process of hot dip aluminum plating zinc silicon plate, the travelling speed of production line is controlled at 120-160m/min.

The process method of hot dip aluminum plating zinc silicon plate of the present invention is achieved in that

This method has increased the fritting pot in original production line unit; With composition by weight % be Al48%-52%, Cu 0.12% ± 0.02%, Pb 0.011% ± 0.002%, Sn 0.0058% ± 0.002%, Cd 0.0014% ± 0.0005%; The aluminium zinc preparation plating bath of Fe＞0.24% ± 0.02%, Mg 0.192% ± 0.02%, Mn0.0048% ± 0.002%, Si＞0.0624% ± 0.015%, Zn 48.46% ± 2%; Be placed in the fritting pot; Use 300KW electromagnetic induction body that plating bath is heated, dissolve in advance, then after stirring, put into galvanizing kettle again.

Aluminium zinc is heated to 600 ℃, uses argon gas to stir simultaneously, make it each composition uniform mixing.

Through the state-of-the-art spectrum analyzer of Germany; Be used for the test and the analysis of plating bath alloying element, the plating bath after the above-mentioned abundant stirring is chemically examined, the content of chemical examination zinc, aluminium; The content of aluminium is controlled at is not less than the upper limit 48%, the content of zinc is controlled at 46%-50%.Because aluminium is pulled away and oxidation easily in the production process.

In the production process of hot dip aluminum plating zinc silicon plate, the travelling speed of production line is controlled at 120-160m/min.

Aluminum-zinc alloy silicon plating bath chemical ingredients sees the following form:

Claims (1)

1. the process method of a hot dip aluminum plating zinc silicon plate, this method includes following steps:

1. the composition of preparing this plating bath of plating bath % by weight is Al 48-52%, Cu 0.12% ± 0.02%, Pb 0.011% ± 0.002%, Sn 0.0058% ± 0.002%, Cd 0.0014% ± 0.0005%, Fe＞0.24% ± 0.02%, Mg 0.192% ± 0.02%, Mn 0.0048% ± 0.002%, Si＞0.0624% ± 0.015%, Zn 48.46% ± 2%;

Above-mentioned solution composition is placed in the fritting pot, adopt 300kW electromagnetic induction body that plating bath is heated, Heating temperature to 600 ℃ uses argon gas to stir simultaneously, and each composition of above-mentioned plating bath is mixed;

2. the plating bath after 1. step fully being stirred is chemically examined, and detects the content of zinc, aluminium in the plating bath, the content of aluminium is controlled at is not less than 48%, and the content of zinc is controlled at 46%-50%;

3. in the production process of hot dip aluminum plating zinc silicon plate, the travelling speed of production line is controlled at 120-160m/min.