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Hot dip coating aluminum zinc lead antimony alloy in use for zinc plating narrow steel strip, method and ingot mold

A hot-dip galvanizing and antimony alloy technology, which is applied in hot-dip galvanizing process, metal material coating process, coating, etc., can solve problems such as difficulty in adding zinc pot, fluctuation of zinc bath temperature, and small production capacity, so as to reduce dross ” phenomenon, the effect of improving brightness and improving fluidity

Active Publication Date: 2007-12-26
ZHUZHOU SMELTER GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For narrow-band galvanizing, the production capacity is relatively small, and the volume of equipment used for galvanizing is also small, generally 20-40t. For example, when using 20-25kg small zinc alloy ingots, the frequency of addition is too much, and the amount of addition is not easy. control, labor intensity is high; and the surface area of ​​the alloy ingot is large, the output rate of zinc oxide slag is high, which increases the production cost of the galvanizing factory and is not conducive to the control of the production process
If the weight of a single ingot exceeds 1t, the specific surface area is relatively small, but it is difficult for the user to add the zinc pot, and it is easy to cause fluctuations in the temperature of the zinc bath. For the alloy ingot production plant, it has the advantages of convenient production and stacking in the warehouse Safety, storage space saving, convenient hoisting, and anti-theft advantages during transportation. There is no ingot type that is beneficial to both in the market.
[0008] To sum up, the composition of the zinc alloy for hot-dip galvanizing of narrow-strip steel provided by the prior art is not ideal, and its application method puts forward higher requirements for users, and its ingot shape is inconvenient to use and transport, and needs further improvement

Method used

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  • Hot dip coating aluminum zinc lead antimony alloy in use for zinc plating narrow steel strip, method and ingot mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A hot-dip galvanized aluminum-lead-antimony alloy for narrow strip galvanizing, the material of the narrow strip steel is Q195, the zinc alloy composition and its weight percentage are: 0.4% (wt) Al, 0.003% (wt) Pb, 0.1% ( wt) Sb, the rest is 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. The four sides are sloped to make the cuboid look big up and down. The weight of the ingot is 530kg. , the ingot length L is 1015mm, the width B is 430mm, and the height H is 230mm.

[0029] The above alloy is directly melted into a zinc bath, and the narrow strip steel made of Q195 is hot-dip galvanized.

Embodiment 2

[0031] A hot-dip galvanized aluminum-lead-antimony alloy for narrow strip galvanizing, the material of the narrow strip steel is Q195, the zinc alloy composition and its weight percentage are: 0.5% (wt) Al, 0.003% (wt) Pb, 0.1% ( wt) Sb, the rest is zinc and unavoidable impurities. The ingot shape is a "T"-shaped cuboid with two symmetrical ears. The bottom of the cuboid is flat, and the ears are provided with hoisting holes. The four sides are sloped to make the cuboid appear large up and down. The weight of the ingot is 430kg. , the ingot length L is 985mm, the width B is 410mm, and the height H is 210mm.

[0032] The above alloy is directly melted into a zinc bath, and the narrow strip steel made of Q195 is hot-dip galvanized.

Embodiment 3

[0034]A hot-dip galvanized aluminum-lead-antimony alloy for narrow-band galvanizing, the zinc alloy components and their weight percentages are: 0.5% (wt) Al, 0.003% (wt) Pb, 0.1% (wt) Sb, and the rest is 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. The four sides are sloped to make the cuboid look big up and down. The weight of the ingot is 530kg. , the ingot length L is 1015mm, the width B is 430mm, and the height H is 230mm.

[0035] The above alloy is directly melted into a zinc bath, and the narrow strip steel made of Q195 is hot-dip galvanized.

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Abstract

This invention relates to a hot-galvanized Al-Pb-Sb alloy, its hot-dip galvanization method and its ingot for narrow steel belt. The hot-galvanized Al-Pb-Sb alloy comprises: Al 0.4-1.0 wt.%, Pb 0.003-0.1 wt.%, Sb 0.1-0.25 wt.%, and Zn and impurities as balance. The T-shaped ingot of the hot-galvanized Al-Pb-Sb alloy is a trapezoid with two symmetric warped ears. The ears have lift-off holes. The hot-galvanized Al-Pb-Sb alloy is directly smelted into a zinc bath. The hot-galvanized Al-Pb-Sb alloy can improve the fluidity of the zinc bath, decrease the residue rate, and increase the smoothness of the galvanization layer. The hot-galvanized Al-Pb-Sb alloy is used for galvanizing on a narrow steel belt.

Description

technical field [0001] The invention relates to a hot-dip galvanizing alloy, a hot-dip galvanizing method and a zinc alloy ingot type, in particular to a zinc alloy used for hot-dip galvanizing of narrow strip steel, a method for hot-dip galvanizing narrow strip steel and its application to narrow strip steel Hot-dip galvanized zinc alloy ingot type. Background technique [0002] At present, the hot-dip galvanizing industry at home and abroad adopts zinc alloy bath galvanizing. Compared with pure zinc plating, the corrosion resistance, surface quality, and coating adhesion of the coating have made great progress. Zinc alloy bath solves the problems of poor melt fluidity, thicker coating, and poor surface finish of the coating to a certain extent, but the amount of zinc added is still high, resulting in high galvanizing costs in the case of a sharp rise in zinc prices in recent years. [0003] The hot-dip galvanizing of narrow-strip steel generally uses Q195 substrates for g...

Claims

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Application Information

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IPC IPC(8): C22C18/04C23C2/06
Inventor 苗华磊刘文德朱北平陈敬阳
Owner ZHUZHOU SMELTER GRP
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