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Hot-dip galvanizing method for steel components

A technology of hot-dip galvanizing and steel components, which is applied in the field of zinc alloy and its ingot shape, can solve problems such as segregation and burning loss, achieve stable content, facilitate hoisting and feeding, and reduce storage space.

Active Publication Date: 2011-12-28
ZHUZHOU SMELTER GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Still another object of the present invention is to provide a new hot-dip galvanizing method, which uses hot-dip galvanized aluminum-nickel-bismuth rare earth alloy ingots to directly melt into a zinc bath to solve various problems existing in the hot-dip galvanized zinc bath. Solve problems such as segregation and burning of elements to improve the brightness of the coating, effectively eliminate the Sandelin effect caused by active steel galvanizing, improve the wetting performance and flowability of the iron substrate and the zinc bath, and improve the corrosion resistance and mechanical properties of the coating. , reduce coating thickness, reduce cost

Method used

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  • Hot-dip galvanizing method for steel components

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Effect test

Embodiment 2

[0026] A hot-dip galvanized aluminum-nickel-bismuth rare earth alloy for hot-dip galvanizing of steel components, the composition of which is 0.008% (wt) Al; 0.04% (wt) Ni; 0.02% (wt) Bi; 0.006% (wt) RE; The remainder is zinc and unavoidable impurities.

[0027] The hot-dip galvanized aluminum-nickel-bismuth rare-earth alloy ingot is in the shape of a rectangular zinc ingot body 1 with two symmetrical ears and a 3 "T" shape. The upper plane and the bottom of the zinc ingot body 1 are planes. Both ear hooks 3 are provided with hanging holes 2 . The four sides of the zinc ingot body 1 are inclined surfaces, the upper cross section of the zinc ingot body 1 is larger than the lower cross section, the ingot weight is 1100kg, the length L of the ingot shape is 1200mm, the width B is 600mm, and the height H is 300mm.

[0028] Use the above-mentioned hot-dip galvanized aluminum-nickel-bismuth rare earth alloy ingot to hot-dip galvanize steel components, the wetting performance and fl...

Embodiment 3

[0030] A hot-dip galvanized aluminum-nickel-bismuth rare earth alloy for hot-dip galvanizing of steel components, the composition of which is 0.008% (wt) Al; 0.06% (wt) Ni; 0.02% (wt) Bi; 0.01% (wt) RE; The remainder is zinc and unavoidable impurities.

[0031] Ingot type is with embodiment 1.

[0032]Use the above-mentioned hot-dip galvanized aluminum-nickel-bismuth rare earth alloy ingot to hot-dip galvanize steel components, the wetting performance and fluidity of the zinc bath are good, there is no Sandelin effect, the coating has good corrosion resistance and mechanical properties, and has no alloying elements. damage.

Embodiment 4

[0034] A hot-dip galvanized aluminum-nickel-bismuth rare earth alloy for hot-dip galvanizing of steel components, the composition of which is 0.012% (wt) Al; 0.04% (wt) Ni; 0.02% (wt) Bi; 0.006% (wt) RE; The remainder is zinc and unavoidable impurities.

[0035] Ingot type is with embodiment 2.

[0036] Use the above-mentioned hot-dip galvanized aluminum-nickel-bismuth rare earth alloy ingot to hot-dip galvanize steel components, the wetting performance and fluidity of the zinc bath are good, there is no Sandelin effect, the coating has good corrosion resistance and mechanical properties, and has no alloying elements. damage.

[0037] The present invention includes but is not limited to the above-mentioned embodiments, as long as the hot-dip galvanized Alnico-bismuth rare earth alloy ingot is directly melted into a zinc bath, it belongs to the protection scope of the present invention.

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Abstract

The invention relates to a zinc alloy for hot-dip galvanizing of iron and steel components, an ingot form and a method thereof. Its alloy composition and weight percentage are 0.008% to 0.012% (wt) Al, 0.04% to 0.06% (wt) Ni, 0.02% to 0.08% (wt) Bi, 0.006% to 0.01% (wt) RE, and the rest are Zinc and unavoidable impurities. The shape of the ingot is a "T" shaped cuboid with two symmetrical ears. The bottom of the cuboid is flat. There are hoisting holes on the ears. Its hot-dip galvanizing method is to directly melt the above-mentioned alloys to form a zinc bath, which is easy to use, and the content of the alloy elements aluminum, bismuth, nickel and rare earth in the zinc bath is stable and uniform, which can slow down or eliminate the Sandelin effect produced by active steel galvanizing , Improve the wettability and fluidity of the iron substrate and the zinc bath, improve the corrosion resistance and mechanical properties of the coating, reduce the thickness of the coating, and reduce costs. The zinc alloy ingot type has a suitable shape and ingot weight, which can meet the requirements of galvanizing for large-capacity galvanizing equipment. It is convenient for hoisting and forklifting, and has a small specific surface area. It is suitable for multi-layer stacking in storage, saves storage space, and has the advantages of stability and safety. .

Description

technical field [0001] The invention relates to a zinc alloy, an ingot form and a method thereof, in particular to a zinc alloy used for hot-dip galvanizing of iron and steel components, an ingot form and a method thereof. Background technique [0002] At present, the hot-dip galvanizing industry at home and abroad adopts zinc alloy bath galvanizing. Zn-Al-Ni-Bi-RE alloy is not only very effective in improving the brightness of the coating, but also can effectively eliminate the Sandelin effect produced by active steel galvanizing. , improve the wettability and fluidity of the iron substrate and the zinc bath, improve the corrosion resistance and mechanical properties of the coating, and reduce the thickness of the coating. It is an ideal zinc alloy for hot-dip galvanizing. Zinc alloy baths are usually prepared with zinc alloy at the production site before use. Due to the generally large volume of steel components, the volume of the zinc bath equipment used for galvanizing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/00C23C2/06
Inventor 匡立春窦传龙王全王辉杨岳云
Owner ZHUZHOU SMELTER GRP
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