CN105220617A - Steel wire of a kind of hoist cable zinc-aluminium coating and epoxy coating and preparation method thereof - Google Patents
Steel wire of a kind of hoist cable zinc-aluminium coating and epoxy coating and preparation method thereof Download PDFInfo
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- CN105220617A CN105220617A CN201510711439.XA CN201510711439A CN105220617A CN 105220617 A CN105220617 A CN 105220617A CN 201510711439 A CN201510711439 A CN 201510711439A CN 105220617 A CN105220617 A CN 105220617A
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Abstract
The present invention relates to the steel wire of a kind of hoist cable zinc-aluminium coating and epoxy coating, comprise the bright steel wire of core, described bright steel wire skin is coated with zinc-aluminium coating and epoxy coating successively, wherein in zinc-aluminium coating, aluminium content is 4.2 ~ 7.2wt%, and the thickness of epoxy coating is 0.2 ~ 0.4mm.Steel wire have carry out zinc-plated aluminium coat successively by bright steel wire, electrostatic spraying epoxy coating is formed.The Steel Wire Surface forming hoist cable is provided with zinc-aluminium coating and epoxy coating from inside to outside, improves the decay resistance of hoist cable.
Description
Technical field
The invention belongs to bridge sling technical field, be specifically related to steel wire of a kind of hoist cable zinc-aluminium coating and epoxy coating and preparation method thereof.
Background technology
Sling of suspension bridge connects main push-towing rope and stiff girder, and the load of stiff girder is delivered to the important component of Hawser.Hoist cable has two kinds of forms usually, is respectively hot extruded polyethylene parallel wire unit hoist cable and wire rope sling.Wire rope sling is comparatively large due to nonelastic deformation, needs repeatedly stretching in hoist cable making, and length is difficult to ensure, and skin does not have the good high density polyethylene (HDPE) sheath of resistance to antiseptic property, and therefore application life is shorter.Traditional hot extruded polyethylene parallel wire unit hoist cable cable body adopts zinc-coated wire, and the double-deck high density polyethylene (HDPE) sheath of outer hot extrude, ground tackle is installed at two ends.The steel wire that hoist cable in the past adopts is cold-drawn carbon steel wire, and coating is pure zinc coating.The distinguishing feature of this steel wire is that phosphorus content is high, and tensile strength is large, zinc coat unit mass>=300g/m
2, according to national building anti-corrosion handbook, this coating can reach 20 years to 25 years in the anticorrosive life-span of coastal area.In recent years, bridge cable Zn-Al Alloy Coated Steel Wire was developed, and for bridge construction.Zinc aluminum alloy coating unit mass>=300g/m
2, through salt fog resistance checking, its salt spray corrosion resistance is 2 times of galvanizing, and this coating anticorrosive life-span under marine environment can reach 40 ~ 50 years in theory.
Epoxy resin is the family macromolecule compound containing two or more epoxide groups in molecule.Epoxy coating mainly includes machine epoxy resin and curing compound, filler, pigment and flow-control agent, after epoxy powder is heated melting, reacts to each other form complicated cross-linked polymer with each constituent.According to related tests and application practice, thickness can reach more than 50 years in the anticorrosive life-span of 0.2 ~ 0.4mm epoxy coating.
Along with the bridge construction place of China to be developed into coastal from inland, bridge construction environment becomes increasingly complex, and the environment for use of hoist cable is more severe, and developing a kind of corrosion resistance can better hoist cable steel wire be a difficult problem of pendulum in face of those skilled in the art.
Summary of the invention
Technical problem to be solved by this invention is steel wire providing a kind of hoist cable zinc-aluminium coating and epoxy coating and preparation method thereof for above-mentioned prior art, steel wire external sheath zinc-aluminium coating and epoxy coating, hoist cable prepared by this steel wire of employing has stronger decay resistance, and the anticorrosive life-span can reach more than 100 years.
The present invention's adopted technical scheme that solves the problem is: the steel wire of a kind of hoist cable zinc-aluminium coating and epoxy coating, comprises the bright steel wire of core, and described bright steel wire skin is coated with zinc-aluminium coating and epoxy coating successively.
Preferably, the thickness of described epoxy coating is 0.2 ~ 0.4mm, test finds that anticorrosive life-span of epoxy coating of this thickness can reach more than 50 years, and the steel wire limit is anti-hang the conditions such as intensity, torsion, bending, winding under can not ftracture, layering, the phenomenon such as to peel off.
Further, in described zinc-aluminium coating, aluminium content is 4.2 ~ 7.2wt%, meets the requirement in national standard " bridge Zn-Al Alloy Coated Steel Wire cable " (paper for approval).
Corresponding hoist cable is that Hexagonal close is arranged in steel tendon by some above-mentioned steel wires, along described steel tendon outer continuous winding polyester fiber band, and external pe sheath, the steel wire skin stretched in cable body in mooring anchor cup divests epoxy coating, and between anchor cup inner chamber and steel tendon, filling epoxy resin filler is to form HiAm anchorage or to fill pltine to form hot casting anchor.
Another object of the present invention is to provide the preparation method of the steel wire of above-mentioned hoist cable zinc-aluminium coating and epoxy coating, concrete technology comprises: immerse in the allumen liquid of melting by the bright steel wire of wire rod after hanging and pulling out, zinc-aluminium coating on bright steel wire plated surface, the unit mass>=300g/m of zinc-aluminium coating
2, in zinc-aluminium coating, the content of aluminium is 4.2 ~ 7.2wt%; Then the steel wire that effects on surface is coated with zinc-aluminium coating carries out electrostatic spraying epoxy coating and forms epoxy coating, utilize the physical phenomenon of electrophoresis, the epoxy coating particle of atomization is made to bring negative electrical charge in DC high voltage electric field, and under the effect of electrostatic field, directionally flow to positively charged Zn-Al Alloy Coated Steel Wire, originally mutual NA powder particle forms even, smooth, smooth coating through heating and melting, the thickness of epoxy coating is 0.2 ~ 0.4mm, obtains steel wire finished product.
Preferably, after zinc-aluminium coating completes, adopt saponification liquor to the degreasing of zinc-aluminium coating surface, and before electrostatic spraying epoxy coating, preheating is carried out to steel wire, to improve electrostatic spraying effect, make between epoxy coating and zinc-aluminium coating more reliable in combination, prevent cracking, be separated.
Described epoxy coating mainly comprises epoxy resin, curing compound, filler, pigment and flow-control agent.
Compared with prior art, the invention has the advantages that:
(1) Steel Wire Surface forming hoist cable is provided with zinc-aluminium coating and epoxy coating from inside to outside, significantly improves the decay resistance of cable, improves the durability of hoist cable.
(2) have zinc-aluminium coating simultaneously and have the mechanical property identical with independent zinc-aluminium coating wire with the composite steel wire of epoxy coating, namely the outer epoxy coating be coated with can not impact the mechanical performance of steel wire; Further, the epoxy coating in the present invention and zinc-aluminium coating the limit of steel wire is anti-hang the conditions such as intensity, torsion, bending, winding under can not ftracture, layering, the phenomenon such as to peel off.
(4) pltine can be poured between hoist cable involved in the present invention and ground tackle and form hot casting anchor or epoxy iron sand forms HiAm anchorage, strong adaptability, be positioned at anchor cup inner chamber for divesting the zinc-aluminium coating wire after epoxy coating.
Accompanying drawing explanation
Fig. 1 is the structural representation of the steel wire of zinc-aluminium coating and epoxy coating in the embodiment of the present invention;
Fig. 2 is the cross-section cutaway view of the steel wire of zinc-aluminium coating and epoxy coating in the embodiment of the present invention;
Fig. 3 is the lateral view of composite steel wire in the embodiment of the present invention;
Fig. 4 is the structural representation of hoist cable in the embodiment of the present invention;
Fig. 5 is hoist cable bitter end structural representation in the embodiment of the present invention (anchor circle fixed);
Fig. 6 is another hoist cable bitter end structural representation in the embodiment of the present invention (fork ear fixed).
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figures 1 to 5, hoist cable in the present embodiment steel wire of zinc-aluminium coating and epoxy coating, comprise the bright steel wire 1 of core, described bright steel wire 1 skin is coated with zinc-aluminium coating 2 and epoxy coating 3 successively, wherein in zinc-aluminium coating 2, aluminium content is 4.2 ~ 7.2wt%, and the thickness of epoxy coating 3 is 0.2 ~ 0.4mm.
The preparation technology of above-mentioned steel wire is, immerses in the allumen liquid of melting, zinc-aluminium coating 2 on bright steel wire plated surface, the unit mass>=300g/m of zinc-aluminium coating 2 by the bright steel wire 1 of wire rod after drawing
2, in zinc-aluminium coating 2, the content of aluminium is 4.2 ~ 7.2wt%; Adopt the uniformity of copper sulfate test inspection zinc-aluminium coating: copper sulphate soaks number of times>=4 time, each soak time 60 seconds.Utilize saponification liquor dirty to zinc-aluminium coating 2 surface degreasing after zinc-aluminium coating 2 completes, utilize heating generator to carry out preheating to steel wire thereupon, and then zinc-aluminium coating 2 external surface carries out electrostatic spraying epoxy coating to form epoxy coating 3, utilize the physical phenomenon of electrophoresis, the epoxy coating particle of atomization is made to bring negative electrical charge in DC high voltage electric field, and under the effect of electrostatic field, directionally flow to positively charged zinc aluminum alloy coating outer peripheral face, originally mutual NA powder particle is formed evenly through heating and melting, smooth, smooth coating, the thickness of epoxy coating 3 is namely obtain steel wire finished product after 0.2 ~ 0.4mm.
Described epoxy coating mainly comprises epoxy resin, curing compound, filler, pigment and flow-control agent.
The performance test results of above-mentioned composite steel wire should meet the requirement of table 1.
Table 1 composite steel wire technical indicator
See Fig. 4, Fig. 5, for hoist cable structure of the present invention, be that Hexagonal close is arranged in steel tendon 4 by some above-mentioned steel wires, along described steel tendon 4 outer continuous winding polyester fiber band 6, and external pe sheath 7, the steel wire skin stretched in cable body in mooring anchor cup 5 divests epoxy coating, and between anchor cup 5 inner chamber and steel tendon 4, filling epoxy resin filler is to form HiAm anchorage or to fill pltine to form hot casting anchor.
In the hoist cable of said structure, Steel Wire Surface is provided with zinc-aluminium coating and epoxy coating from inside to outside, improves the decay resistance of hoist cable.
Claims (7)
1. a hoist cable steel wire for zinc-aluminium coating and epoxy coating, comprises the bright steel wire (1) of core, it is characterized in that: described bright steel wire (1) skin is coated with zinc-aluminium coating (2) and epoxy coating (3) successively.
2. the steel wire of hoist cable zinc-aluminium coating according to claim 1 and epoxy coating, is characterized in that: in described zinc-aluminium coating (2), aluminium content is 4.2 ~ 7.2wt%.
3. the steel wire of hoist cable zinc-aluminium coating according to claim 1 and epoxy coating, is characterized in that: the thickness of described epoxy coating (3) is 0.2 ~ 0.4mm.
4. one kind adopts the hoist cable of hoist cable zinc-aluminium coating and epoxy coating steel wire described in claim 1, it is characterized in that: hoist cable is that Hexagonal close is arranged in steel tendon (4) by some steel wires, along described steel tendon (4) outer continuous winding polyester fiber band (6), and external pe sheath (7), the steel wire skin that hoist cable stretches in anchor cup (5) divests epoxy coating, and between anchor cup (5) inner chamber and steel tendon (4), filling epoxy resin filler is to form HiAm anchorage or to fill pltine to form hot casting anchor.
5. prepare the steel wire method of hoist cable zinc-aluminium coating and epoxy coating described in claim 1 for one kind, it is characterized in that: the bright steel wire of wire rod after hanging and pulling out is immersed in the allumen liquid of melting, zinc-aluminium coating on bright steel wire plated surface, the unit mass>=300g/m of zinc-aluminium coating
2, in zinc-aluminium coating, the content of aluminium is 4.2 ~ 7.2wt%; Then the steel wire that effects on surface is coated with zinc-aluminium coating carries out electrostatic spraying epoxy coating and forms epoxy coating, and the thickness of epoxy coating is 0.2 ~ 0.4mm, obtains steel wire finished product.
6. the preparation method of the steel wire of hoist cable zinc-aluminium coating according to claim 5 and epoxy coating, it is characterized in that: after zinc-aluminium coating completes, adopt saponification liquor to the degreasing of zinc-aluminium coating surface, and before electrostatic spraying epoxy coating, preheating is carried out to steel wire.
7. the preparation method of the steel wire of hoist cable zinc-aluminium coating according to claim 5 and epoxy coating, is characterized in that: described epoxy coating mainly comprises epoxy resin, curing compound, filler, pigment and flow-control agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510711439.XA CN105220617A (en) | 2015-10-28 | 2015-10-28 | Steel wire of a kind of hoist cable zinc-aluminium coating and epoxy coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510711439.XA CN105220617A (en) | 2015-10-28 | 2015-10-28 | Steel wire of a kind of hoist cable zinc-aluminium coating and epoxy coating and preparation method thereof |
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| CN105220617A true CN105220617A (en) | 2016-01-06 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1077604A (en) * | 1996-09-03 | 1998-03-24 | Nippon Steel Corp | Corrosion-proofing method for main cable for suspension bridge |
| JP3833658B2 (en) * | 2004-01-05 | 2006-10-18 | 住友電工スチールワイヤー株式会社 | Coated PC steel strand |
| CN202323716U (en) * | 2011-11-11 | 2012-07-11 | 柳州豪姆机械有限公司 | Double-layer PE (poly ethylene) removable steel stranded wire |
| CN103882800A (en) * | 2014-03-11 | 2014-06-25 | 江苏法尔胜缆索有限公司 | Suspension bridge main cable and cable stands for the same |
| CN104929043A (en) * | 2015-06-30 | 2015-09-23 | 江苏法尔胜缆索有限公司 | Steel wire with zinc-aluminum coating and epoxy coating for sling and preparation method of steel wire |
-
2015
- 2015-10-28 CN CN201510711439.XA patent/CN105220617A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1077604A (en) * | 1996-09-03 | 1998-03-24 | Nippon Steel Corp | Corrosion-proofing method for main cable for suspension bridge |
| JP3833658B2 (en) * | 2004-01-05 | 2006-10-18 | 住友電工スチールワイヤー株式会社 | Coated PC steel strand |
| CN202323716U (en) * | 2011-11-11 | 2012-07-11 | 柳州豪姆机械有限公司 | Double-layer PE (poly ethylene) removable steel stranded wire |
| CN103882800A (en) * | 2014-03-11 | 2014-06-25 | 江苏法尔胜缆索有限公司 | Suspension bridge main cable and cable stands for the same |
| CN104929043A (en) * | 2015-06-30 | 2015-09-23 | 江苏法尔胜缆索有限公司 | Steel wire with zinc-aluminum coating and epoxy coating for sling and preparation method of steel wire |
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Application publication date: 20160106 |