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Alloy element adding method for steel hot galvanizing

An alloy element, hot-dip galvanizing technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of shortening the smelting time of the intermediate alloy, easy burning of the metal element, difficult to melt into the high melting point, etc. , to shorten the smelting time, improve the metal yield, and achieve the effect of stable yield

Inactive Publication Date: 2021-10-22
HAIXI HUAHUI CHEM MASCH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for adding alloy elements for hot-dip galvanizing of steel, which uses metal ingots and intermediate alloys to smelt multi-element alloys. The multi-element alloy ingots have low melting points, fast dissolution, and stable yields. The characteristic of low temperature greatly shortens the smelting time of the master alloy, reduces the oxidative burning loss of easily oxidized elements, improves the metal yield, improves the production efficiency, and solves the problems of easy burning of simple metals, high melting point, high density and easy segregation, etc. question

Method used

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  • Alloy element adding method for steel hot galvanizing

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Comparison scheme
Effect test

Embodiment 1

[0041] see figure 1 Shown, the present invention is a kind of method for adding alloy elements for hot-dip galvanizing of iron and steel, comprising the following steps (in terms of furnace capacity 1000kg):

[0042] S1: Grind Al, Ni, Bi, La, Ce and Zn in batches. The specifications of Bi and Zn are 80-100 mesh. Al, Ni, Mg, The crushing specifications of La material and Ce material are both 200-400 meshes. After crushing, 100kg of Al material powder, 10kg of Ni material powder, 15kg of Bi material powder, 5kg of La material powder, 5kg of Ce material powder and 865kg of Zn material powder, the mass percentage of the components of the multi-element alloy ingot is Al10±2%, Ni1±0.1%, Bi1.5±0.15%, La0.5%, Ce0.5%, and the rest are Zn;

[0043] S2: Smelting Zn-Ni master alloy;

[0044] The concrete steps of smelting Zn-Ni master alloy are:

[0045] S21: Add 100kg of Zn material powder into the intermediate frequency furnace and raise the temperature to 450°C;

[0046] S22: After...

Embodiment 2

[0065] see figure 1 Shown, the present invention is a kind of method for adding alloy elements for hot-dip galvanizing of iron and steel, comprising the following steps (in terms of furnace capacity 1000kg):

[0066] S1: Grind Al, Ni, Bi, La, Ce and Zn in batches. The specifications of Bi and Zn are 80-100 mesh. Al, Ni, Mg, The crushing specifications of La material and Ce material are both 200-400 meshes. After crushing, 100kg of Al material powder, 10kg of Ni material powder, 15kg of Bi material powder, 5kg of La material powder, 5kg of Ce material powder and 865kg of Zn material powder, the mass percentage of the components of the multi-element alloy ingot is Al10±2%, Ni1±0.1%, Bi1.5±0.15%, La0.5%, Ce0.5%, and the rest are Zn;

[0067] S2: Smelting Zn-Ni master alloy;

[0068] The concrete steps of smelting Zn-Ni master alloy are:

[0069] S21: Add 100kg of Zn material powder into the intermediate frequency furnace, and raise the temperature to 475°C;

[0070] S22: Afte...

Embodiment 3

[0089] see figure 1 Shown, the present invention is a kind of method for adding alloy elements for hot-dip galvanizing of iron and steel, comprising the following steps (in terms of furnace capacity 1000kg):

[0090] S1: Grind Al, Ni, Bi, La, Ce and Zn in batches. The specifications of Bi and Zn are 80-100 mesh. Al, Ni, Mg, The crushing specifications of La material and Ce material are both 200-400 meshes. After crushing, 100kg of Al material powder, 10kg of Ni material powder, 15kg of Bi material powder, 5kg of La material powder, 5kg of Ce material powder and 865kg of Zn material powder, the mass percentage of the components of the multi-element alloy ingot is Al10±2%, Ni1±0.1%, Bi1.5±0.15%, La0.5%, Ce0.5%, and the rest are Zn;

[0091] S2: Smelting Zn-Ni master alloy;

[0092] The concrete steps of smelting Zn-Ni master alloy are:

[0093] S21: Add 100kg of Zn material powder into the intermediate frequency furnace, and raise the temperature to 500°C;

[0094] S22: Afte...

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Abstract

The invention discloses an alloy element adding method for steel hot galvanizing, and relates to the technical field of metallurgical engineering. The preparation method comprises the following steps: S1, crushing an Al material, a Ni material, a Bi material, a La material, a Ce material and a Zn material in batches, and carrying out weighing according to a weight ratio after crushing; S2, smelting a Zn-Ni intermediate alloy; S3, smelting an Al-Ni intermediate alloy; S4, smelting a Zn-Al-rare earth intermediate alloy; and S5, a preparing a multi-element alloy ingot, adding the remaining Zn material powder into an intermediate frequency furnace, raising the temperature to 500-550 DEG C, melting the Zn material powder into molten zinc, adding the Zn-Ni intermediate alloy and the Al-Ni intermediate alloy into the intermediate frequency furnace at the same time, raising the temperature to 650-750 DEG C, carrying out heat preservation for 20-30 min, and carrying out then full stirring. According to the method, the multicomponent alloy is smelted in the mode of the metal ingot and the intermediate alloy. By making full use of the characteristic that the intermediate alloy is low in melting point, the smelting time of the intermediate alloy is greatly shortened, oxidation burning loss of easily-oxidized elements is reduced, the metal yield is increased, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgical engineering, in particular to a method for adding alloy elements for hot-dip galvanizing of iron and steel. Background technique [0002] Hot-dip galvanizing is one of the most effective means to delay the environmental corrosion of steel materials. It is to immerse the cleaned and activated steel products in molten zinc liquid, and through the reaction and diffusion between iron and zinc, the steel products The surface is coated with zinc alloy coating with good adhesion. [0003] In order to improve the corrosion resistance, thickness uniformity and brightness of galvanizing in the hot-dip galvanizing process, various alloying elements are often added to the zinc liquid, such as aluminum, bismuth, nickel and lanthanum, etc., and most of the alloys sold on the market are binary Alloys, such as Zn-Al, Zn-Ni, Zn-Bi and Zn-La alloys. Hot-dip galvanizing enterprises need to purchase a variety...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C18/04C23C2/06C23C2/02
CPCC22C1/03C22C18/04C23C2/06C23C2/02
Inventor 李世伟李晋健龙海林尹少华
Owner HAIXI HUAHUI CHEM MASCH CO LTD
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