CN217073627U - High-strength corrosion-resistant stainless steel coated steel wire for bridge cable - Google Patents
High-strength corrosion-resistant stainless steel coated steel wire for bridge cable Download PDFInfo
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- CN217073627U CN217073627U CN202122738328.1U CN202122738328U CN217073627U CN 217073627 U CN217073627 U CN 217073627U CN 202122738328 U CN202122738328 U CN 202122738328U CN 217073627 U CN217073627 U CN 217073627U
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Abstract
The utility model provides a bridge cable is with high strength corrosion resistant stainless steel clad layer steel wire, by stainless steel corrosion resistant outer layer with high strength steel core assembly back through hot rolling cold drawing technology shaping, it includes stainless steel corrosion resistant outer layer, high strength steel core and metallurgical bonding transition layer, stainless steel corrosion resistant outer layer cladding is in the periphery of high strength steel core, stainless steel corrosion resistant outer layer with the hot rolling makes its contact surface form behind the high strength steel core assembly metallurgical bonding transition layer; the diameter of the high-strength corrosion-resistant stainless steel coated steel wire for the bridge cable is 3-7mm, the thickness of the corrosion-resistant outer stainless steel layer is 1-8% of the diameter of the high-strength corrosion-resistant stainless steel coated steel wire for the bridge cable, and the thickness of the metallurgical bonding transition layer is 0.02-0.10 mm. The utility model provides a high bridge cable is with corrosion-resistant stainless steel coating steel wire that excels in, the characteristics of stable performance have high strength, corrosion resisting property is good.
Description
Technical Field
The utility model relates to a cable wire technical field, concretely relates to bridge cable is with corrosion-resistant stainless steel coating steel wire that excels in.
Background
With the development of the preferred bridge type of the large-span bridge, such as a cable-stayed bridge, a suspension bridge and other cable-supported bridges, higher performance requirements are provided for the key raw material, namely the high-strength steel wire, for the bridge cable, the corrosion-resistant steel wire for the new generation of ultra-high-strength bridge cable is researched to save the material consumption, reduce the production cost, prolong the corrosion-resistant service life of the steel wire, adapt to the construction requirements of the large-span bridge, and become one of the key points concerned by people. At present, galvanized steel wires with the strength levels of phi 5.0mm series 1870MPa and l960MPa are commonly used for suspension bridge main cable strands at home and abroad, a galvanized steel wire with the strength level of phi 5.25mm 1860MPa is adopted for a Korean plum shun bridge main cable built in 2013, and a galvanized steel wire with the strength level of phi 5.35mm 1960MPa is adopted for a Korean Yushan bridge design built in 2015; the Dongting lake secondary bridge built in 2018 is designed by adopting phi 5.25mm 1860PMa galvanized steel wires, and the tiger door secondary bridge built in 2019 is designed by adopting phi 5.0mm 1960MPa galvanized steel wires.
However, a plurality of scholars at home and abroad research the corrosion conditions of the galvanized steel wire rope for the suspension bridge cable under different in-cable environments. The results show that the steel wire ends and anchors are more susceptible to corrosion, while the middle portion is less corrosive. Zinc plated steel wire will not generate rotten candle when the relative humidity is less than 60%, but it is very easy to rot candle when the relative humidity is higher. In addition, under the condition of a large amount of salt and high temperature, the steel wire can generate remarkable corrosion. With the increase of service life, the galvanized steel wire gradually exposes the problems of corrosion prevention layer aging, corrosion, wire breakage and the like, and the cable can be seriously broken, so that the bridge collapse accident is caused.
Therefore, it is necessary to develop and produce high-strength steel wires with higher corrosion resistance so as to meet the long-life requirement of cable-supported bridges such as cable-stayed bridges and suspension bridges.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a bridge cable is with corrosion-resistant stainless steel cladding steel wire that excels in, the characteristics of stable performance have high strength, corrosion resisting property.
In order to solve the above problem, the technical scheme of the utility model is as follows:
a high-strength corrosion-resistant stainless steel clad steel wire for a bridge cable is formed by assembling a stainless steel corrosion-resistant outer layer and a high-strength steel core and then performing hot rolling and cold drawing processes, and comprises a stainless steel corrosion-resistant outer layer, the high-strength steel core and a metallurgical bonding transition layer, wherein the stainless steel corrosion-resistant outer layer is coated on the periphery of the high-strength steel core, and the stainless steel corrosion-resistant outer layer and the high-strength steel core are assembled and then hot rolled to form the metallurgical bonding transition layer on the contact surface of the stainless steel corrosion-resistant outer layer and the high-strength steel core;
the diameter of the high-strength corrosion-resistant stainless steel coated steel wire for the bridge cable is 3-7mm, the thickness of the corrosion-resistant outer stainless steel layer is 1-8% of the diameter of the high-strength corrosion-resistant stainless steel coated steel wire for the bridge cable, and the thickness of the metallurgical bonding transition layer is 0.02-0.10 mm.
Furthermore, the stainless steel corrosion-resistant outer layer is made of 2205, 2304, 2507 and 316L materials.
Further, the high-strength steel core is made of high-carbon low-alloy steel or medium-carbon low-alloy steel.
Furthermore, the high-strength steel core adopts a round billet with the diameter not less than 300mm or a square billet with the length and width not less than 300mm, the round billet with the diameter of 160mm is firstly hot-rolled, and then the surface treatment is carried out on the round billet with the high-strength steel core, and the round billet with the high-strength steel core and the stainless steel pipe are subjected to composite assembly to form the stainless steel composite billet.
Compared with the prior art, the utility model provides a bridge cable is with corrosion-resistant stainless steel cladding steel wire that excels in, beneficial effect lies in:
the utility model provides a bridge cable is with corrosion-resistant stainless steel cladding steel wire that excels in, the outer stainless steel that adopts excels in, the core adopts the low alloy steel core that excels in, and the stainless steel cladding steel wire that the preparation obtained has intensity height, corrosion resisting property is good, the characteristics of stable performance, the preparation of cable-supported bridge cable such as specially adapted cable-stay bridge, suspension bridge.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is the structural schematic diagram of the high-strength corrosion-resistant stainless steel coated steel wire for the bridge cable.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the embodiments of the present invention and make the above objects, features and advantages of the present invention more obvious and understandable, the following description will make further description of the embodiments of the present invention.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual values, and between the individual values may be combined with each other to yield one or more new ranges of values, which ranges of values should be considered as specifically disclosed herein.
Example 1
In this embodiment, a stainless steel coated steel wire with a diameter of 7.0mm is prepared by the following specific preparation process:
step S1, rolling the steel billet into a round billet to form a high-strength steel core, wherein the rolling deformation is more than or equal to 45%; wherein the billet steel selects QS87Mn alloy, heats QS87Mn alloy 350 x 400mm continuous casting billet to 1050 ℃, then hot-rolls into phi 160mm round billet to form high-strength steel core, then removes the defects of surface oxidation, slag inclusion and the like by turning method, and processes to proper size;
step S2, manufacturing a stainless steel pipe according to a preset size to serve as a stainless steel corrosion-resistant outer layer, and performing cleaning treatment for removing impurities and dirt on the inner surface of the stainless steel pipe and the outer surface of the high-strength steel core; then assembling the stainless steel pipe and the high-strength steel core to obtain a stainless steel-high-strength steel composite billet;
specifically, 2205 stainless steel is selected as an outer layer, and an oxide layer, impurities and oil stains on the inner wall of a 2205 stainless steel pipe with the inner diameter phi of 159mm are removed by acid washing; sleeving the high-strength steel core billet obtained in the step S1 into a 2205 stainless steel tube by using a hydraulic device;
step S3, placing the assembled stainless steel-high-strength steel composite billet into vacuum packaging equipment, starting the equipment for vacuumizing, removing air between the stainless steel corrosion-resistant outer layer and the high-strength steel core to enable the vacuum degree to be more than or equal to 10Pa, and welding and sealing the tail end of the stainless steel-high-strength steel composite billet in the vacuum packaging equipment;
specifically, a plasma or electron beam welding machine is used for welding and packaging two ends of the steel billet after vacuumizing.
Step S4, heating the welded and sealed stainless steel-high-strength steel composite billet to 1180 ℃ in a heating furnace for 2-3 hours to ensure that the temperature inside and outside the stainless steel-high-strength steel composite billet is uniform;
step S5, discharging the heated stainless steel-high-strength steel composite billet out of the furnace, then carrying out hot rolling on a hot continuous rolling mill, controlling the initial rolling temperature to be 1100 ℃, carrying out multi-pass hot rolling, then rolling the composite billet into a stainless steel cladding wire rod with the diameter of phi 14mm, and controlling the final rolling temperature to be 850 ℃;
pickling the hot rolled wire rod to remove oxide skin on the surface, and then carrying out surface phosphating treatment;
step S6, cold-drawing the stainless steel cladding hot-rolled wire rod into a stainless steel cladding steel wire with phi of 7mm by 9 times of cold-drawing process, and tempering the steel wire, wherein the tempering temperature is 270 ℃, and the heat preservation is carried out for 36 hours; in the cold drawing process, the deformation of each pass is 5-15%, and the cold drawing speed is 25 m/min.
Please refer to fig. 1, which is a schematic structural diagram of a high-strength corrosion-resistant stainless steel coated steel wire for a bridge cable according to the present invention. The high-strength corrosion-resistant stainless steel clad steel wire prepared by the embodiment comprises a stainless steel corrosion-resistant outer layer 1, a high-strength steel core 2 and a metallurgical bonding transition layer 3, wherein the stainless steel corrosion-resistant outer layer 1 is coated on the periphery of the high-strength steel core 2, and the stainless steel corrosion-resistant outer layer 1 and the high-strength steel core 2 are assembled and then hot-rolled to form the metallurgical bonding transition layer 3 on the contact surface;
in this embodiment, the diameter of the stainless steel coated steel wire is 7mm, wherein the thickness of the stainless steel corrosion-resistant outer layer is 0.175mm, the thickness of the stainless steel corrosion-resistant outer layer is 2.5% of the diameter of the composite steel wire, and the thickness of the metallurgical bonding transition layer is 0.05 mm.
Example 2
In this embodiment, a stainless steel coated steel wire with a diameter of 5.0mm is prepared by the following specific preparation process:
step S1, rolling the steel billet into a round billet to form a high-strength steel core, wherein the rolling deformation is more than or equal to 45%; wherein the billet steel selects QS87Mn alloy, QS87Mn alloy phi 320mm continuous casting billet is heated to 1050 ℃ and then is hot-rolled into phi 160mm round billet to form high-strength steel core, and then the billet steel is turned to remove the defects of surface oxidation, slag inclusion and the like and is processed to proper size;
step S2, manufacturing a stainless steel pipe according to a preset size to serve as a stainless steel corrosion-resistant outer layer, and performing cleaning treatment for removing impurities and dirt on the inner surface of the stainless steel pipe and the outer surface of the high-strength steel core; then assembling the stainless steel pipe and the high-strength steel core to obtain a stainless steel-high-strength steel composite billet;
specifically, 2304 stainless steel is selected as an outer layer, and an oxidation layer, impurities and oil stains on the inner wall of a 2304 stainless steel pipe with the inner diameter of phi 159mm are removed by acid washing; sleeving the high-strength steel core billet obtained in the step S1 into a 2205 stainless steel tube by using a hydraulic device;
step S3, placing the assembled stainless steel-high-strength steel composite billet into vacuum packaging equipment, starting the equipment for vacuumizing, removing air between the stainless steel corrosion-resistant outer layer and the high-strength steel core to enable the vacuum degree to be more than or equal to 10Pa, and welding and sealing the tail end of the stainless steel-high-strength steel composite billet in the vacuum packaging equipment;
specifically, a plasma or electron beam welding machine is used for welding and packaging two ends of the steel billet after vacuumizing.
Step S4, heating the welded and sealed stainless steel-high-strength steel composite billet to 1200 ℃ in a heating furnace for 2 hours to ensure that the inside and outside temperature of the stainless steel-high-strength steel composite billet is uniform;
step S5, discharging the heated stainless steel-high-strength steel composite billet out of the furnace, then carrying out hot rolling on a hot continuous rolling mill, controlling the initial rolling temperature to 1150 ℃, carrying out multi-pass hot rolling, and then rolling the composite billet into a stainless steel cladding wire rod with the diameter of phi 12mm, and controlling the final rolling temperature to 880 ℃;
pickling the hot rolled wire rod to remove oxide skin on the surface, and then carrying out surface phosphating treatment;
step S6, performing 10-pass cold drawing process on the stainless steel coating hot rolled wire rod to obtain a stainless steel coating steel wire with the diameter of phi 5mm, tempering the steel wire at the tempering temperature of 270 ℃, and preserving heat for 36 hours; in the cold drawing process, the deformation of each pass is 5-15%, and the cold drawing speed is 50 m/min.
The structure of the high-strength corrosion-resistant stainless steel coated steel wire prepared in the embodiment is basically the same as that of the embodiment 1, in the embodiment, the diameter of the stainless steel coated steel wire is 5mm, the thickness of the corrosion-resistant outer layer of the stainless steel is 0.2mm, the thickness of the corrosion-resistant outer layer of the stainless steel is 4% of the diameter of the composite steel wire, and the thickness of the metallurgical bonding transition layer is 0.03 mm.
Mechanical property tests are carried out on the high-strength corrosion-resistant stainless steel coated steel wire samples prepared in the embodiments 1 and 2, and the test results are shown in the table 1:
table 1: mechanical property test result of high-strength corrosion-resistant stainless steel coated steel wire sample
| Tensile strength/Mpa | Elongation/percent | |
| Example 1 | 1930 | 5.8 |
| Example 2 | 1935 | 5.6 |
The utility model provides a bridge cable is with corrosion-resistant stainless steel cladding steel wire that excels in, the outer stainless steel that adopts excels in, the core adopts the low alloy steel core that excels in, and the stainless steel cladding steel wire that the preparation obtained has intensity height, corrosion resisting property is good, the characteristics of stable performance, the preparation of cable-supported bridge cable such as specially adapted cable-stay bridge, suspension bridge.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (3)
1. A high-strength corrosion-resistant stainless steel coated steel wire for a bridge cable is characterized by comprising a stainless steel corrosion-resistant outer layer, a high-strength steel core and a metallurgical bonding transition layer, wherein the stainless steel corrosion-resistant outer layer is coated on the periphery of the high-strength steel core, and the stainless steel corrosion-resistant outer layer and the high-strength steel core are assembled and then hot-rolled to form the metallurgical bonding transition layer on the contact surface of the stainless steel corrosion-resistant outer layer and the high-strength steel core;
the diameter of the high-strength corrosion-resistant stainless steel coated steel wire for the bridge cable is 3-7mm, the thickness of the corrosion-resistant outer stainless steel layer is 1-8% of the diameter of the high-strength corrosion-resistant stainless steel coated steel wire for the bridge cable, and the thickness of the metallurgical bonding transition layer is 0.02-0.10 mm.
2. The bridge cable of claim 1 wherein said stainless steel outer layer is made of 2205, 2304, 2507, 316L.
3. A high strength corrosion resistant stainless steel coated steel wire for a bridge cable as claimed in claim 1, wherein said high strength steel core is made of a high carbon low alloy steel or a medium carbon low alloy steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122738328.1U CN217073627U (en) | 2021-11-10 | 2021-11-10 | High-strength corrosion-resistant stainless steel coated steel wire for bridge cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122738328.1U CN217073627U (en) | 2021-11-10 | 2021-11-10 | High-strength corrosion-resistant stainless steel coated steel wire for bridge cable |
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| CN217073627U true CN217073627U (en) | 2022-07-29 |
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| CN202122738328.1U Active CN217073627U (en) | 2021-11-10 | 2021-11-10 | High-strength corrosion-resistant stainless steel coated steel wire for bridge cable |
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