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Special zinc with purification function for hot dip

A hot-dip, functional technology, applied in hot-dip galvanizing process, coating, metal material coating process, etc., to achieve the effect of improving productivity, improving fluidity and reducing zinc consumption

Inactive Publication Date: 2020-01-03
上海灿诺锌合金研究所
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a special zinc for hot-dip galvanizing with purifying function, which can avoid the formation of non-metallic and zinc reaction compounds in the hot-dip galvanizing process, reduce zinc consumption, improve the fluidity of the galvanizing solution, and solve the problem of purifying non-metallic impurities. question

Method used

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Embodiment Construction

[0008] At present, the production process of batch galvanizing manufacturers is to place zinc ingots in a zinc pool, heat and melt them into zinc water (galvanizing solution), and then immerse steel parts in zinc water to form a layer of alloy layer and pure zinc covering on the steel surface. layer. In the production process, in order to improve product quality and reduce production costs, manufacturers choose alloys containing different elements to adjust zinc water, such as alloys containing manganese and aluminum elements. The invention patent (Patent No.: 103602939A) "A Zinc Alloy for Heat and Hot-dip Galvanizing Method" mainly solves the technical problem of the surface heat of steel with complex composition and structure, and produces a lot of low slag that causes zinc waste. Invention patent (patent number: 101429604B) "A zinc-aluminum-rare earth master alloy and its application in the production of hot-dip galvanized alloy", the composition of this master alloy: Al: 3...

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Abstract

The invention provides a special zinc with a purification function for hot dip. The special zinc with the purification function for the hot dip is characterized in that a zinc ingot is taken as a benchmark, wherein at least two elements among 0.001%-1.00% of mixed rare earth (La-Ce), 0.001%-2.00% of tin (Sn), 0.001%-1.00% of bismuth (Bi), and 0.12% nickel (Ni) are added into the zinc ingot, and the balance is intrinsic impurities of the zinc ingot. According to the special zinc with the purification function for the hot dip, the added metal elements in the zinc ingot can preferentially react with a nonmetal generated in a zinc plating solution to be discharged, and the special zinc with the purification function for the hot dip has the beneficial effects that 1, the reaction between the nonmetal and the zinc is prevented, the zinc consumption is reduced, the fluidity is improved, and the zinc plating quality is ensured, and the cost is reduced; and 2, the problem of the nonmetal impurity purification is solved, the non-suspend production purification are realized, and the productivity is improved.

Description

technical field [0001] The invention relates to the technical field of hot-dip treatment on the surface of iron and steel materials, in particular to a special zinc for hot-dip with purification function. Background technique [0002] In my country's batch hot-dip galvanizing industry, manufacturers have always used zinc ingots to melt into zinc water (galvanizing solution), and then immersed steel parts in zinc water to form an iron-zinc coating on the surface of steel parts through alloying reactions. Alloy layer and pure zinc layer to achieve the purpose of anti-corrosion. However, since the production is continuous, as the steel parts continue to enter the zinc pool for galvanizing, the non-metallic compounds (such as oxides, sulfides, chlorides, phosphides, etc.) in the zinc liquid in the zinc pool gradually increase, resulting in The fluidity of zinc liquid is greatly reduced and the zinc consumption is increased, and the quality of galvanizing is reduced. At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C22C18/00
CPCC22C18/00C23C2/06
Inventor 梁志强李海良
Owner 上海灿诺锌合金研究所
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