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Production technology for HDPE hot-galvanizing-zinc-aluminum-alloy pre-stress steel strand

A technology of prestressed steel strand and production process, applied in hot dip plating process, metal material coating process, coating and other directions, can solve problems such as cable breakage, a lot of manpower, economic loss, etc. The effect of large area and high linear density

Inactive Publication Date: 2019-06-07
天津市新天钢钢线钢缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increasing air pollution, the durability of the bridge cable system has begun to appear. The corrosion rate of the cables of many cable bridges is much higher than expected. The cables that are designed to be replaced once every 40 years are often used for more than 10 years due to various corrosions. Serious phenomena such as cable breakage
The replacement of cables requires a lot of manpower and material resources, which will cause huge economic losses. Therefore, it is urgent to study the corrosion resistance of bridge cable systems.

Method used

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  • Production technology for HDPE hot-galvanizing-zinc-aluminum-alloy pre-stress steel strand
  • Production technology for HDPE hot-galvanizing-zinc-aluminum-alloy pre-stress steel strand
  • Production technology for HDPE hot-galvanizing-zinc-aluminum-alloy pre-stress steel strand

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Embodiment Construction

[0032] The HDPE hot-dip galvanized aluminum alloy prestressed steel strand production process includes the following processes:

[0033] Wire rod preparation inspection - including nine inner wire rods, nine outer wire rods and one center wire rod;

[0034] Pickling and phosphating treatment process—use degreasing furnace degreasing plus multiple sets of electrolytic alkaline cleaning and pickling combined technology for pre-plating treatment;

[0035] Wire drawing process - using multi-pass, small compression ratio, stirring lubrication and rotating cooling mold combination technology;

[0036] Specifically, taking the diameter of the inner layer wire rod as φ6.5, the diameter of the outer layer wire rod as φ11, and the diameter of the center wire rod as φ11 as an example, the specific diameter of the wire drawing matching die is shown in Table 1:

[0037] Table I

[0038]

[0039] Hot-dip galvanizing process—hot-dip galvanizing-5% aluminum-mixed rare earth alloy coating...

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Abstract

The invention relates to the technical field of steel strand production, in particular to a production technology for a HDPE hot-galvanizing-zinc-aluminum-alloy pre-stress steel strand. The productiontechnology includes the following steps of steel-wire-rod preparing and detecting; acid pickling parkerizing; wiredrawing; hot galvanizing; finishing; twisting and stabilizing treating; anti-corrosive grease coating; plastic covering; packaging warehousing. According to the production technology for the HDPE hot-galvanizing-zinc-aluminum-alloy pre-stress steel strand, the corrosion resistance andthe flexible performance of the pre-stress steel strand can be improved, particularly, when the pre-stress steel strand is used on a bridge, the bridge building cost can be saved, the service life isprolonged, and construction is convenient.

Description

technical field [0001] The invention relates to the technical field of steel strand production, in particular to a production process of HDPE hot-dip galvanized aluminum alloy prestressed steel strand. Background technique [0002] HDPE hot-dip galvanized aluminum alloy prestressed steel strands are mainly used for bridge cables, anchoring tension members, lifting and fixing tension members and other components in civil engineering. As the basic raw material of bridge cables at present, "steel wire for bridge cables and its products" need to continuously improve the corrosion resistance performance index and service life to meet the development requirements of bridges, and at the same time improve the flexibility of prestressed steel strands to make them During bridge construction, it is easier to pass through the saddle cable hole without damaging the surface of the PE sheath. [0003] Since the 1990s, more than 100 cable bridges have been built in my country. These bridge...

Claims

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Application Information

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IPC IPC(8): D07B1/06D07B7/14C23C2/06C23C2/38
Inventor 张建国赵国华王国良王志永李鹏张延旭金新
Owner 天津市新天钢钢线钢缆有限公司
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