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Process method for obtaining steel wire hot galvanizing and alloy thick plating layer

A process method and hot-dip galvanizing technology, applied in hot-dip plating process, metal material coating process, improvement of process efficiency, etc., can solve the problems of pollution in the production process, high production cost, difficult to increase DV value, etc. The effect of increasing the output, reducing the number of lines, and shortening the production time

Pending Publication Date: 2021-06-08
TIANJIN GONGDA GALVANIZING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] To sum up, the current hot-dip galvanizing of steel wire and thick alloy plating methods have bottleneck problems such as difficulty in increasing the DV value, pollution in the production process, and high production costs.

Method used

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  • Process method for obtaining steel wire hot galvanizing and alloy thick plating layer
  • Process method for obtaining steel wire hot galvanizing and alloy thick plating layer
  • Process method for obtaining steel wire hot galvanizing and alloy thick plating layer

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Adopt the method of the present invention to implement the production of hot-dip galvanized aluminum alloy steel wire: material 82B, hot-dip Galfan (Zn-5%Al-RE) alloy, diameter 5.0mm, production capacity requirement 30,000 tons / year. See Table 1 for technical requirements:

[0037] Table 1 Technical requirements of 5.0mm Galfan-plated steel wire

[0038]

[0039] go through figure 1 The process of completing the hot-dip Galfan alloy process of steel wire. The specific process parameters are as follows: DV=1000mm·m / min, wire speed 200m / min, number of wires 2, induction heating temperature 400°C, hot-dip temperature 440°C, air knife pressure 1.0kg. After production, two galvanized wires were taken, and the wire diameter, zinc content, aluminum content, mechanical properties and surface quality were tested respectively, and the experimental data and conclusions in the following table 2 were obtained.

[0040] Table 2 Measured results of 5.0mm Galfan-coated steel wire...

Embodiment 2

[0044] Adopt the method of the present invention to implement the production of galvanized steel wire for galvanized steel strands: hot-dip galvanized with a material of 65#, a diameter of 3.20mm, and a production capacity requirement of 24,000 tons / year. See Table 3 for technical requirements:

[0045] Table 3 3.20mm galvanized steel wire technical requirements

[0046]

[0047] go through figure 1 The process of completing the hot-dip galvanizing process of steel wire. The specific process parameters are as follows: DV=640mm·m / min, wire speed 200m / min, number of wires 4, induction heating temperature 450°C, hot-dip temperature 465°C, air knife pressure 0.3kg. After production, four galvanized wires were taken, and the wire diameter, zinc content, mechanical properties and surface quality were tested respectively, and the experimental data and conclusions in Table 4 below were obtained.

[0048] Table 4 3.20mm galvanized steel wire measured results

[0049]

[0050]...

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Abstract

The invention relates to a process method for obtaining a steel wire hot galvanizing and alloy thick plating layer. The process method comprises the following steps: performing oil and rust removal treatment on the surface of a steel wire at a wiring speed in a range of 150-500 m / min, putting the treated steel wire into an induction heating furnace, and performing induction heating on the steel wire under the action of protective gas at the induction heating temperature 0-70 DEG C lower than a plating solution temperature, wherein the plating solution temperature is 420-520 DEG C, and the induction heating time is 0.5-2 seconds; and discharging the steel wire out of the induction heating furnace, entering a zinc pot from a closed steel pipe, vertically leading out a plating solution through a ceramic wire pressing shaft, entering a wiping device, and finally cooling to obtain the thick-plated steel wire. According to the method, the steel wire subjected to surface treatment can enter the zinc pot after being subjected to induction heating by protective gas of which the temperature is equal to or lower than the hot plating temperature at a relatively high wiring speed, namely in a range of 150-500 m / min, and then is vertically led out of a liquid surface to be wiped, so that a high-binding-force thick plating layer meeting the strength requirement is obtained.

Description

technical field [0001] The invention relates to the technical field of metal corrosion and protection, in particular to a production process for steel wire hot-dip galvanizing and alloy thick coating. Background technique [0002] In humid air, especially in marine atmosphere, the surface of steel wire is prone to rust. At this stage, galvanizing and zinc alloy are important means of steel corrosion protection. Steel wire The American Association of Materials Laboratories once proposed that the time for galvanized steel wire to rust = 2.46 × zinc content (g / m 2 ). In other words, the thickness of the coating (that is, the amount of zinc added) is positively correlated with the corrosion resistance of the steel wire. [0003] In the current standards for galvanizing and alloys, there are many classifications of coating weights, but there are few definitions for thick coatings. Especially for galvanized aluminum alloy steel wire, due to the addition of aluminum element in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C23C2/18C23C2/02C21D9/52C21D1/26C21D1/42C21D1/74
CPCC23C2/06C23C2/185C23C2/02C21D9/525C21D1/26C21D1/42C21D1/74Y02P10/25
Inventor 周宗才李永迪马林
Owner TIANJIN GONGDA GALVANIZING EQUIP CO LTD
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