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

A technology for hot-dip galvanizing and alloying, which is applied in the fields of hot-dip galvanizing alloy, hot-dip galvanizing method and zinc alloy ingot type, can solve the problems of temperature fluctuation of zinc bath, small production capacity, small equipment volume, etc. Fluidity, the effect of reducing the slag rate

Inactive Publication Date: 2007-12-26
ZHUZHOU SMELTER GRP
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  • 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.
[0009] 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 there is no production Zinc alloy without spangled plate needs further improvement

Method used

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

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Embodiment 1

[0029] A hot-dip galvanized 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, the rest is zinc and unavoidable of 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.

[0030] The above alloys are directly melted into a zinc bath, and the narrow strip steel made of Q195 is hot-dip galvanized to produce zinc-free plates.

Embodiment 2

[0032]A hot-dip galvanized 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, the rest is zinc and unavoidable of 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.

[0033] The above alloys are directly melted into a zinc bath, and the narrow strip steel made of Q195 is hot-dip galvanized to produce zinc-free plates.

Embodiment 3

[0035] A hot-dip galvanized alloy for narrow-band galvanizing, the zinc alloy composition and its weight percentage are: 0.5% (wt) Al, 0.003% (wt) Pb, 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.

[0036] The above alloys are directly melted into a zinc bath, and the narrow strip steel made of Q195 is hot-dip galvanized to produce zinc-free plates.

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Abstract

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

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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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06
Inventor 苗华磊刘志祥唐凌杨岳云
Owner ZHUZHOU SMELTER GRP
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