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Technological method of steel wire overlay galfan alloy and its equipment

A process method and steel wire technology, applied in the field of metal product manufacturing, can solve the problems of high use and management costs, poor coating quality, and unfavorable actual production and use.

Inactive Publication Date: 2007-09-12
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It mainly has the following problems: 1. The coating quality is not good
All in all, the research results reported in this literature have not been applied in industrial production
[0006] In addition, the wiping process of the existing foreign single-plating technology uses nitrogen gas (see Galfan protective coating for wire rods and high-strength bolts, German World First 1992, Volume 78, Phase 1, pages 22-24; Nuenninghoff R, Sczepanski K. Protective coating.Galfan-coating of wire and high-strength screws.Part 1.Draht Welt, 1992, 78(1):22-24,), use and management costs are too high, and it is not conducive to actual production use

Method used

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  • Technological method of steel wire overlay galfan alloy and its equipment

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Experimental program
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Effect test

Embodiment 1

[0025] The diameter of the steel wire with Galfan alloy plating is 2.0mm. Adopt process method and equipment described in the present invention to process. The formula of the plating flux is: 10% of zinc sulfate, 3% of GD-L catalyst, and the rest of water; the line speed is 40 m / min, and the current density is 3500A / m 2 . The amount of zinc on the product steel wire is 280 g / m 2 , in line with product design requirements.

Embodiment 2

[0027] The diameter of steel wire coated with Galfan alloy is 1.0mm. Adopt process method and equipment described in the present invention to process. The formula of the plating flux is: zinc sulfate 8%; GD-L catalyst 2.5%; the remaining water; line speed 30 m / min, current density 3000A / m 2 . Detect the amount of zinc on the steel wire of the product: 130 g / m 2 , in line with product design requirements.

Embodiment 3

[0029] The diameter of steel wire coated with Galfan alloy is 3.0mm. Adopt process method and equipment described in the present invention to process. The formula of the plating flux is: zinc sulfate 12%; GD-L catalyst 2%; the remaining water; line speed 70 m / min, current density 5000A / m 2 . Detect the amount of zinc on the steel wire of the product: 390 g / m 2 , in line with product design requirements.

[0030] Although the process and equipment of steel wire single-galvanized alloy plating are simple, easy and cheap, its product performance is not bad, or even better. Table 1 shows the comparison of mechanical properties between the single plating process and the double plating process of steel wire Galfan alloy. It can be seen from the data in Table 1 that the mechanical properties of the steel wire coated with Galfan alloy are less sacrificed, and its adhesion is also better than that of the steel wire coated with Galfan alloy.

[0031] single plating proce...

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Abstract

A process for plating Galfan alloy on the surface of steel wire includes such steps as paying off, degreasing, pickling, water washing, preplating in electrolytic liquid prepared from zinc sulfate, catalyst GD-L and water, baking, hot dipping for plating, vertically leading out, wiping, forced cooling and winding. In said hot dipping step, an internal heater made of anticorrosion alloy pipe is used.

Description

technical field [0001] The invention relates to metal product manufacturing technology in the metallurgical industry, specifically a metal product coating technology, especially a process method and equipment for single-coating Galfan alloy on steel wire. The international patent main classification number is proposed to be Int.Cl 7 .C25D 3 / 22. Background technique [0002] Galfan alloy refers to an alloy with a small amount of Zn+5%Al+Re. This Galfan alloy coating, whether for wires, pipes, plates and strips, is 2-3 times more corrosion resistant than the currently widely used pure zinc coating, so it can solve the application of coated metal products in special environments question. At the same time, replacing pure zinc coating with Galfan alloy will also produce huge economic benefits: First, Galfan alloy coating can enhance the corrosion resistance of coated metal products. Galfan alloy coating products have obvious corrosion resistance advantages over traditional ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/06C23C2/38C23C2/02C23C2/26C25D3/22
Inventor 曹晓明温鸣
Owner HEBEI UNIV OF TECH
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