Manufacturing method for steel wire inhaul cable with polyurea protective materials on outer layer

A technology of protective materials and production methods, applied in bridge materials, bridge parts, bridges, etc., can solve problems such as reducing the strength level of steel wires, and achieve good economic benefits

Active Publication Date: 2015-11-25
LIUZHOU OVM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the "hydrogen embrittlement" phenomenon of galvanized (or zinc-aluminum alloy), it has been controversial to reduce the strength level of steel wire

Method used

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  • Manufacturing method for steel wire inhaul cable with polyurea protective materials on outer layer
  • Manufacturing method for steel wire inhaul cable with polyurea protective materials on outer layer
  • Manufacturing method for steel wire inhaul cable with polyurea protective materials on outer layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0153] A method for making a steel wire cable with a polyurea protective material on the outermost layer of the steel wire assembly coated with a polyurea protective coating I:

[0154] The steel wire includes a pretreated smooth steel wire or a surface with epoxy coating, galvanized coating, plastic coating, anti-corrosion grease coating, oily wax or metal coating on the outer periphery of the smooth steel wire 1 Corrosion-resistant steel wire with coating or plating 2:

[0155] In this embodiment, the outermost layer of the steel wire assembly is coated with a polyurea protective coating I. The production method of the steel wire cable with the polyurea protective material in the outer layer is to use 19 smooth steel wires after pretreatment or It is an anti-corrosion steel wire with epoxy coating, galvanized coating, plastic coating, anti-corrosion grease coating, oily wax or metal coating attached to the surface of the smooth steel wire 1, and the coating or coating 2 is d...

Embodiment 2

[0177] The production method of the steel wire cable with the outer layer of the wrapping tape and the outer layer of the polyurea protective material in the steel wire assembly:

[0178] The method is to wrap the steel wire cables Ia and IIa with polyurea protective material on the outer layer produced in Example 1 through the G: wrapping process, and wrap a layer of wrapping tape 5 on the outer periphery of the steel wire assembly to form an outer layer with a protective material. Steel wire cables Ⅰa0, Ⅱa0 of polyurea protective material (see diagram 2-1 , Figure 2-2 );

[0179] As a transformation of the embodiment of the present invention, the steel wire cables Ia0 and IIa0 with polyurea protective material on the outer layer produced through the A-F and G processes are then passed through the I1:PE sleeve extrusion process I or sequentially passed through the I1:PE Sleeve extrusion process Ⅰ and I2: PE sleeve extrusion process Ⅱ; the outer layer of the wrapping tape ...

Embodiment 3

[0186] Embodiment three: the outer layer of the wrapping tape of the steel wire cable is coated with the polyurea protective coating II, and the outer layer has the steel wire cable of the polyurea protective material:

[0187] Such as Figure 3-1~Figure 3-2 As shown, the steel wire cables Ia0 and IIa0 with polyurea protective material on the outer layer made of the steel wire assembly wrapped with a layer of wrapping tape 5 on the outer periphery of the steel wire assembly produced in Example 2 are then subjected to the H: polyurea material coating process Ⅱ, namely: through one of the following methods:

[0188] ①Extrusion coating: Polyurea material hot-extruded by steel wire cables Ⅰa0 and Ⅱa0 through extrusion equipment;

[0189] ② Spraying: heat and pressurize the equipment, the raw materials are mixed at the nozzle, and then the polyurea material is sprayed from the spray gun to the wire cables Ⅰa0 and Ⅱa0;

[0190] ③ Soaking and pumping coating: steel wire cables Ⅰa0 ...

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Abstract

The invention relates to a manufacturing method for a steel wire inhaul cable with polyurea protective materials on the outer layer. The manufacturing method includes the steps that after steel wires are pretreated, steel wire combinations are molded through drying, coiling, wire dividing and coalescence, the outermost layers of the n steel wire combinations are coated with a polyurea protective coating I through the polyurea material extrusion coating work procedure I; steel wire inhaul cable bodies Ia or IIa with the polyurea protective materials on the outer layers are formed, wherein the n is larger than or equal to 1; then the steel wire inhaul cable bodies Ia or IIa are shaped through wrapping and packaging, and steel wire inhaul cable bodies Ia0 and IIa0 with the polyurea protective materials on the outer layers are formed; the manufactured steel wire inhaul cable bodies with the polyurea protective materials on the outer layers form the steel wire inhaul cable which has multiple protection layers and is provided with the polyurea protective materials on the outer layer through one or more of the PE sleeve extrusion molding working procedures I and II and polyurea material extrusion coating working procedures II and III. The steel wire inhaul cable which is manufactured with the method and provided with the polyurea protective coatings is compact in structure and antiseptic, reduces shocks, and is good in skid resistance and abrasive resistance and long in service life.

Description

technical field [0001] The invention relates to a manufacturing method of a drag cable, in particular to a manufacturing method of a steel wire drag cable with a polyurea protective material on the outer layer. Background technique [0002] The prestressed steel wire cable is a key stress-bearing part in the bridge structure, which requires high corrosion resistance and durability; at present, the bridge steel wire cable used for prestressing usually refers to the national standard GB / T18365-2001 "Hot extrusion of cable-stayed bridges". Ethylene high-strength steel wire cable technical conditions" for production and manufacturing. [0003] The corrosion of prestressed steel wire is stress corrosion under the combined action of stress and corrosion (belonging to the category of galvanic corrosion). corrosion. The anti-corrosion plated (coated) steel of prestressed steel wire is always served under the condition of corrosive medium. According to the type of protective layer,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/16E01D101/30E01D101/40
Inventor 覃巍巍谢正元植磊邹易清闫磊孙利民葛耀君黄永玖石伟邱敏高宁妥宋强华剑平李文献卢双桂梁黎霞邹全覃磊黄子能
Owner LIUZHOU OVM MASCH CO LTD
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