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Method for obtaining nickel zirconium alloy plating by performing hot-dip galvanizing of rolled steel

A technology for hot-dip galvanizing and zirconium alloys, which is applied to the field of hot-dip galvanizing alloys for steel, can solve the problem of little improvement in corrosion resistance, and achieve the effects of easy composition, delaying the formation of white rust, and simple process

Inactive Publication Date: 2016-06-29
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its disadvantage is that the corrosion resistance is not improved much

Method used

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  • Method for obtaining nickel zirconium alloy plating by performing hot-dip galvanizing of rolled steel
  • Method for obtaining nickel zirconium alloy plating by performing hot-dip galvanizing of rolled steel
  • Method for obtaining nickel zirconium alloy plating by performing hot-dip galvanizing of rolled steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The steel used for galvanizing is a steel plate containing 0.10% Si, the size specification is 50mm×40mm×3mm, and the chemical composition is shown in Table 1 below. The method adopted comprises the following steps and process conditions:

[0059] (1) Binary master alloy refining: Weigh nickel and zinc, zirconium and zinc according to weight ratio, put nickel and zinc in a graphite crucible, put zirconium and zinc in another graphite crucible, and refine them separately. Among them, the nickel weight content in the zinc-nickel binary master alloy is 2%, the melting temperature of the zinc-nickel master alloy is 600°C, and the holding time is 3 hours; the zirconium weight content in the zinc-zirconium binary master alloy is 2%, the zinc-zirconium master alloy The melting temperature of the master alloy is 720°C, and the holding time is 3.5 hours. After the alloy liquid of zinc-nickel binary master alloy and zinc-zirconium master alloy is kept warm, it is stirred, left s...

Embodiment 2

[0073] The steel used for galvanizing is Q235 containing (0.22% Si) steel plate, the size specification is 50mm×40mm×3mm, the method adopted includes the following steps and process conditions:

[0074] (1) Binary master alloy refining: Weigh nickel and zinc, zirconium and zinc according to weight ratio, put nickel and zinc in a graphite crucible, put zirconium and zinc in another graphite crucible, and refine them separately. Among them, the nickel content in the zinc-nickel binary master alloy is 2.4%, the melting temperature of the zinc-nickel master alloy is 610°C, and the holding time is 3.5 hours; the vanadium content in the zinc-vanadium binary master alloy is 1%, and the zinc-zirconium master alloy The smelting temperature is 710°C, and the holding time is 4 hours. After the alloy liquid of zinc-nickel binary master alloy and zinc-zirconium master alloy is kept warm, it is stirred, left still and the ash on the surface of the alloy liquid is removed, and then cast into...

Embodiment 3

[0079] The steel used for galvanizing is Q235 (containing 0.22% Si) steel plate, and the size specification is 50mm×40mm×3mm. The method adopted includes the following steps and process conditions:

[0080] (1) Binary master alloy refining: Weigh nickel and zinc, zirconium and zinc according to weight ratio, put nickel and zinc in a graphite crucible, put zirconium and zinc in another graphite crucible, and refine them separately. Among them: the nickel content in the zinc-nickel binary master alloy is 3%, the melting temperature of the zinc-nickel master alloy is 620°C, and the holding time is 4 hours; the vanadium content in the zinc-zirconium binary master alloy is 2%, and the zinc-zirconium master alloy The smelting temperature is 730°C, and the holding time is 3 hours. After the alloy liquid of zinc-nickel binary master alloy and zinc-zirconium master alloy is kept warm, it is stirred, left still and the ash on the surface of the alloy liquid is removed, and then cast int...

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Abstract

The invention discloses a method for obtaining nickel zirconium alloy plating by performing hot-dip galvanizing of rolled steel. The method is characterized by comprising the following step of performing batch hot-dip galvanizing on the rolled steel in a zinc alloy plating bath prepared from two kinds of binary interalloys. The zinc alloy plating bath adopts the formula comprising the following components in percentage: 0.05%-0.10% of nickel, 0.03-0.10% of zirconium, and the balance being zinc. The two kinds of binary interalloys comprise zinc nickel binary interalloys and zinc zirconium binary interalloys, wherein the zinc nickel binary interalloys adopt the formula comprising the following components in percentage that the content of nickel is 2%-3%, and the balance is zinc; zinc zirconium binary interalloys adopt the formula comprising the following components in percentage that the content of zirconium is 1%-2%, and the balance is zinc. The alloy plating is simple in technology, the components in the alloy zinc bath are easy to control, the adverse effect of silicon in rolled steel for hot-dip galvanizing on the plating can be effectively overcome, and the thickness of the plating can be effectively reduced; besides, the corrosion resistance of the plating is further improved, original hot-dip galvanizing equipment does not need to be changed, and the large-scale production of performing batch hot-dip galvanizing on the rolled steel is facilitated.

Description

technical field [0001] The invention belongs to the technical field of steel hot-dip galvanized alloy. In particular, it relates to a method for hot-dip zinc-nickel-zirconium alloy coating on steel. Background technique [0002] As an economical and effective method for surface protection of steel materials, hot-dip galvanizing is widely used in electric power, transportation, construction and other fields. Since silicon is usually added as a deoxidizer in the steelmaking process, most of the steels used for hot-dip galvanizing are mostly killed steels and semi-killed steels (called active steels) with high silicon content. The presence of silicon in steel will affect the growth of each phase layer in the coating, and the coating often appears gray, super thick, and poor in adhesion, which greatly reduces the quality of the coating. In order to improve the quality of hot-dip galvanized products and reduce production costs, in the 1990s, a lot of research on hot-dip galvani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06
CPCC23C2/06
Inventor 周巍于航李昀瑧
Owner SUZHOU UNIV
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