Manufacturing method of steel wire rope for offshore oil

Abstract

The invention relates to the technical field of steel wire rope manufacturing, and discloses a manufacturing method of a steel wire rope for offshore oil, which comprises the following steps of: manufacturing a steel wire rope outer layer strand by adopting a galvanized aluminum alloy steel wire; a rope core is made of galvanized aluminum alloy steel wires; carrying out integral injection molding treatment on the prepared rope core; the steel wire rope outer layer strands and the rope core are combined; according to the invention, each strand of the rope core adopts a large compaction rate production process, so that the overall compactness is improved, the steel wire rope has higher bearing capacity in a high-load environment, and the breaking force of the whole rope is effectively improved; zinc-plated aluminum alloy steel wires are adopted, rope core steel wires are made of 5% aluminum and 95% zinc alloy, outer layer steel wires are made of 10% aluminum and 90% zinc alloy, compared with traditional zinc-plated steel wires, the salt spray experiment result is improved by 6 times, and the service life is effectively prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of steel wire rope manufacturing, and in particular to a method for manufacturing a steel wire rope for offshore petroleum. Background Art

[0002] The lifting equipment of offshore oil platforms is widely used in material handling, equipment installation and other operating scenarios. One of its core components is the wire rope used to carry the lifting weight. However, due to the high salinity, high humidity and high corrosion characteristics of the marine environment, ordinary wire ropes are easily corroded by seawater during long-term use, resulting in rust on the surface and internal wire breakage, which seriously affects the service life and safety of the wire ropes. In addition, the lifting height of the offshore platform is relatively high, which requires high anti-rotation performance and breaking tension of the wire rope.

[0003] Currently, steel wire ropes used in offshore oil have problems such as insufficient breaking force and weak corrosion resistance. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a method for manufacturing a steel wire rope for offshore oil.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for manufacturing a steel wire rope for offshore petroleum includes the following steps: using galvanized aluminum alloy steel wire to make the outer strands of the steel wire rope; using galvanized aluminum alloy steel wire to make the rope core; performing integral injection molding on the prepared rope core; combining the outer strands of the steel wire rope and the rope core;

[0007] When closing the rope, the plastic part of the rope core is fully melted so that the plastic can be fully filled in the internal gap of the wire rope, so that the gaps between the outer strands of the wire rope and between the outer strands of the wire rope and the rope core are completely filled with plastic fillers to ensure that the wire rope has sufficient anti-corrosion, anti-aging and wear-resistant design, and the expected service life can reach more than 10 years;

[0008] The rope core includes 1 rope core center strand and 6 rope core outer strands. Both the rope core center strand and the rope core outer strand are composed of 7 steel wires, which increases the pressure resistance and wear resistance of the steel wire, while reducing the possibility of wire breakage and increasing service life.

[0009] Preferably, the six outer strands of the rope core are arranged around one central strand of the rope core.

[0010] Preferably, the core center strand and the core outer strand each include 1 central steel wire and 6 steel wires surrounding the center, that is, the core rope adopts a 6×7 (1+6) + 1×7 (1+6) structure.

[0011] Preferably, the number of outer strands of the wire rope is 8 strands, and each outer strand of the wire rope includes 26 steel wires, that is, the outer strand of the wire rope adopts a 1×K26WS structure, the tensile strength of all steel wires is 2160Mpa, the breaking force of a single strand can reach 68.12KN, there are 8 outer strands of the wire rope, and the total breaking force of the outer strands of the wire rope can reach 545KN.

[0012] Preferably, the diameter of the steel wire used to make the outer strand of the steel wire rope is 1.6 mm, and the tensile strength of the steel wire is 2160 Mpa.

[0013] Preferably, the thickness of the plastic filling layer after the rope core is integrally injection-molded is 2.0 mm.

[0014] Preferably, the composition of the galvanized aluminum alloy steel wire used for the outer strand of the steel wire rope includes 10% aluminum and 90% zinc, calculated by mass percentage.

[0015] Preferably, the composition of the galvanized aluminum alloy steel wire used in the rope core includes 5% aluminum and 95% zinc, calculated by mass percentage.

[0016] The beneficial effects of the present invention are:

[0017] 1. Improve breaking force and compactness: The strands of the rope core adopt a high compaction rate production process, which improves the overall compactness, enables the wire rope to have a higher bearing capacity under high load conditions, and effectively improves the breaking force of the entire rope.

[0018] 2. Enhanced corrosion resistance: Galvanized aluminum alloy steel wire is used, of which the rope core steel wire is 5% aluminum + 95% zinc alloy, and the outer steel wire is 10% aluminum + 90% zinc alloy. Compared with traditional galvanized steel wire, the salt spray test results are improved by 6 times, effectively extending the service life.

[0019] 3. Optimized anti-rotation structure: The outer strand adopts 1×K26WS structure, and the rope core adopts 6×7 (1+6) + 1×7 (1+6) structure, which improves the pressure and wear resistance of the steel wire, reduces the risk of rotation or twisting during lifting, and ensures the stability of the lifting process.

[0020] 4. Improve wear resistance and service life: After the rope core is produced, it is subjected to overall injection molding. The plastic used is French Total brand PPC3650, and the overall thickness of the plastic is 2.0mm, which not only increases the wear resistance, but also effectively locks the grease in the inner core to prevent the loss of lubricating oil, thereby improving the wear resistance and service life of the wire rope.

[0021] 5. Enhanced anti-corrosion and anti-aging capabilities: During the rope closing process, the rope core plastic is melted at high temperature to fill the plastic into the internal gaps of the wire rope, achieving complete filling between strands and between strands and the rope core, thereby improving the overall anti-corrosion and anti-aging capabilities. The service life is expected to be more than 10 years.

[0022] 6. Reduce maintenance costs and improve operating efficiency: The present invention adopts independent innovative structure and manufacturing process, breaking through the bottleneck of existing domestic steel wire ropes in corrosion resistance and rotation resistance, reducing dependence on imported steel wire ropes, reducing maintenance and replacement frequency, and improving the safety and economy of offshore oil platform operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural cross-sectional view of a steel wire rope for offshore oil use manufactured according to an embodiment of the present invention.

[0024] In the figure: 1-outer strands of steel wire rope, 2-outer strands of rope core, 3-center strands of rope core, 4-plastic filling layer. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In one embodiment, referring to Figure 1 A method for manufacturing a steel wire rope for offshore oil, comprising the following steps: using galvanized aluminum alloy steel wire to make an outer strand 1 of the steel wire rope; using galvanized aluminum alloy steel wire to make a rope core; performing integral injection molding on the prepared rope core; combining the outer strand of the steel wire rope and the rope core;

[0027] When closing the rope, the plastic part of the rope core is fully melted so that the plastic can be fully filled in the internal gap of the wire rope, so that the gaps between the outer strands 1 of the wire rope and between the outer strands 1 of the wire rope and the rope core are completely filled with plastic fillers to ensure that the wire rope has sufficient anti-corrosion, anti-aging and wear-resistant design, and the expected service life can reach more than 10 years;

[0028] The rope core includes one rope core center strand 3 and six rope core outer strands 2. Both the rope core center strand 3 and the rope core outer strand 2 are composed of seven steel wires, which increases the pressure resistance and wear resistance of the steel wires, reduces the possibility of wire breakage, and increases service life.

[0029] Our company uses salt spray test machine to test galvanized steel wire and galvanized aluminum alloy steel wire respectively. The test proves that the effective time of the salt spray test result of galvanized aluminum alloy steel wire is 6 times higher than that of galvanized steel wire.

[0030] As a preferred embodiment of the present invention, six core outer strands 2 of the core rope are arranged around one core central strand 3.

[0031] As a preferred embodiment of the present invention, the rope core center strand 3 and the rope core outer strand 2 each include 1 center steel wire and 6 steel wires surrounding the center, that is, the rope core adopts a 6×7 (1+6) + 1×7 (1+6) structure.

[0032] As a preferred embodiment of the present invention, the number of outer strands 1 of the wire rope is 8, and each outer strand 1 of the wire rope includes 26 steel wires, that is, the outer strand of the wire rope adopts a 1×K26WS structure, the tensile strength of all steel wires is 2160Mpa, and the breaking force of a single strand can reach 68.12KN. There are 8 outer strands 1 of the wire rope, and the total breaking force of the outer strands 1 of the wire rope can reach 545KN.

[0033] As a preferred embodiment of the present invention, the diameter of the steel wire used to manufacture the outer strand 1 of the steel wire rope is 1.6 mm, and the tensile strength of the steel wire is 2160 Mpa.

[0034] As a preferred embodiment of the present invention, the thickness of the plastic filling layer 4 after the rope core is integrally injection-molded is 2.0 mm.

[0035] As a preferred embodiment of the present invention, in the injection molding process of the rope core, the plastic is French Total brand PPC3650, which increases the wear resistance and service life.

[0036] As a preferred embodiment of the present invention, the composition of the galvanized aluminum alloy steel wire used in the outer strand 1 of the steel wire rope includes 10% aluminum and 90% zinc in terms of mass percentage.

[0037] As a preferred embodiment of the present invention, the composition of the galvanized aluminum alloy steel wire used in the rope core includes 5% aluminum and 95% zinc, calculated by mass percentage.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for manufacturing a steel wire rope for offshore petroleum, characterized in that: The following steps are involved: The outer strands of the steel wire rope are made of galvanized aluminum alloy steel wire; the rope core is made of galvanized aluminum alloy steel wire; the rope core is integrally injection molded; the outer strands of the steel wire rope and the rope core are combined; When closing the rope, the plastic part of the rope core is fully melted; The rope core comprises 1 rope core center strand and 6 rope core outer strands, and both the rope core center strand and the rope core outer strand are composed of 7 steel wires.

2. The method for manufacturing a steel wire rope for offshore petroleum according to claim 1, characterized in that: The six outer strands of the rope core are arranged around one central strand of the rope core.

3. The method for manufacturing a steel wire rope for offshore petroleum according to claim 1, characterized in that: The core center strand and the core outer strand each include a central steel wire and six steel wires surrounding the center.

4. The method for manufacturing a steel wire rope for offshore petroleum according to claim 1, characterized in that: The number of outer strands of the steel wire rope is 8, and each outer strand of the steel wire rope includes 26 steel wires.

5. The method for manufacturing a steel wire rope for offshore petroleum according to claim 1, characterized in that: The diameter of the steel wire used to make the outer strands of the wire rope is 1.6 mm and the tensile strength of the steel wire is 2160 Mpa.

6. The method for manufacturing a steel wire rope for offshore petroleum according to claim 1, characterized in that: The thickness of the plastic filling layer after the rope core is integrally injection-molded is 2.0 mm.

7. The method for manufacturing a steel wire rope for offshore petroleum according to claim 1, characterized in that: The composition of the galvanized aluminum alloy steel wire used for the outer strands of the steel wire rope is calculated by mass percentage and includes 10% aluminum and 90% zinc.

8. The method for manufacturing a steel wire rope for offshore petroleum according to claim 1, characterized in that: The composition of the galvanized aluminum alloy steel wire used in the rope core is calculated by mass percentage and includes 5% aluminum and 95% zinc.

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