阅读说明：本技术 一种耐疲劳钢丝绳的生产工艺 (Production process of fatigue-resistant steel wire rope ) 是由 陈健 陈企祥 朱小华 于 2020-05-17 设计创作，主要内容包括：本发明公开了一种耐疲劳钢丝绳的生产工艺,依次包括以下步骤：表面处理、首次拉拔、磷化、再次拉拔、捻股成绳、浸泡、热处理、校直和涂层处理得到耐疲劳钢丝绳。本发明的技术方案制备所得的钢丝绳,钢丝绳的应力消除良好,提高了钢丝绳的耐疲劳、耐腐蚀、耐磨损及低松驰性能,有效消除了钢丝绳的残余结构伸长,提高了使用寿命,能够承受长时间的矿下作业。(The invention discloses a production process of a fatigue-resistant steel wire rope, which sequentially comprises the following steps: the fatigue-resistant steel wire rope is obtained through surface treatment, primary drawing, phosphorization, secondary drawing, stranding into a rope, soaking, heat treatment, straightening and coating treatment. According to the steel wire rope prepared by the technical scheme, the stress of the steel wire rope is well eliminated, the fatigue resistance, corrosion resistance, wear resistance and low relaxation performance of the steel wire rope are improved, the residual structural elongation of the steel wire rope is effectively eliminated, the service life is prolonged, and the steel wire rope can bear long-time underground operation.)

1. A production process of a fatigue-resistant steel wire rope is characterized by comprising the following steps:

s1, surface treatment: placing a raw material wire on a pay-off rack, removing hot rolling oxide skin by mechanical descaling equipment, cleaning, then entering boron coating equipment for boron coating treatment, and finally entering drying equipment for drying to obtain a pretreated wire;

s2, drawing for the first time: placing the pretreated wire rod obtained in the first step on a drawing machine for multi-pass drawing, and processing by adopting a hot-dip galvanized aluminum alloy coating after drawing forming;

s3, phosphorization: carrying out phosphating treatment on the semi-finished wire rod obtained in the step 2 to form a phosphating film on the surface of the steel wire;

s4, drawing again: placing the wire subjected to phosphating treatment on a drawing machine for multi-pass drawing to obtain a finished wire, and taking up the finished wire;

s5, stranding into rope: putting the finished wire rods obtained in the step (4) on a stranding machine for stranding and rope combining to obtain finished steel wire ropes;

s6, soaking: soaking the finished steel wire rope in vegetable oil for 1-2h, and drying in a vacuum environment at 0-80 ℃;

s7, heat treatment: heating the steel wire rope in a heat treatment furnace at the heating temperature of 780-880 ℃, cooling, cleaning, coating the coating assistant agent in a coating assistant agent groove, drying, galvanizing in a zinc pot at the temperature of 420-480 ℃, cooling to obtain a semi-finished wire rod, and taking up the wire rod;

s8, straightening: the steel wire rope subjected to heat treatment is subjected to prestress removal and straightening by a deformation straightener;

s9, coating treatment: and finally, carrying out injection coating treatment on the outer layer of the steel wire rope, wherein the injection material is high-corrosion-resistant plastic with good ductility, and the thickness of the coating is 2-3 mm.

2. A process for producing a fatigue-resistant steel cord according to claim 1, characterized in that: the pass of the multi-pass drawing in the step 2 is 5.5-4.85-3.75-3.3-2.90-2.60-2.30 or 5.5-4.85-3.75-3.3-2.90-2.60-2.30-2.00.

3. A process for producing a fatigue-resistant steel cord according to claim 1, characterized in that: the pass of the multi-pass drawing in the step 4 is 2.3-2.00-1.75-1.55-1.35-1.2 or 2.00-1.75-1.55-1.35-1.2-1.1-1.0.

4. A process for producing a fatigue-resistant steel cord according to claim 1, characterized in that: the heating of the heat treatment furnace in the step 7 is in three sections, and the heating temperature of each section is 780 ℃, 830 ℃ and 880 ℃.

Technical Field

The invention relates to the technical field of steel wire ropes, in particular to a production process of a fatigue-resistant steel wire rope.

Background

The steel wire rope for the space structure is mainly a single-strand rope, and has large breaking tension, high corrosion resistance, high elastic modulus and good non-rotation performance, so that the steel wire rope for the space structure is widely applied to large-scale buildings such as space truss suspension structure construction, racing yard umbrella-shaped ceilings, space guy-type stadium steel structure sheds, ship anchoring and the like, but the existing steel wire rope production technology still has defects, mainly adopts 82B wire rods with high carbon content as raw materials in the steel wire rope production, has large stress and strong deformation resistance, adopts multi-level (layered) twisting technology when twisting the steel wire rope, has bending stress, causes poor stress elimination of the steel wire rope, has low fatigue resistance and corrosion resistance, has poor low looseness performance, and cannot meet the requirements of engineering construction.

Disclosure of Invention

The invention aims to provide a production process of a fatigue-resistant steel wire rope aiming at the defects and shortcomings of the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: the production process of the fatigue-resistant steel wire rope is characterized by comprising the following steps of:

s1, surface treatment: placing a raw material wire on a pay-off rack, removing hot rolling oxide skin by mechanical descaling equipment, cleaning, then entering boron coating equipment for boron coating treatment, and finally entering drying equipment for drying to obtain a pretreated wire;

s2, drawing for the first time: placing the pretreated wire rod obtained in the first step on a drawing machine for multi-pass drawing, and processing by adopting a hot-dip galvanized aluminum alloy coating after drawing forming;

s3, phosphorization: carrying out phosphating treatment on the semi-finished wire rod obtained in the step 2 to form a phosphating film on the surface of the steel wire;

s4, drawing again: placing the wire subjected to phosphating treatment on a drawing machine for multi-pass drawing to obtain a finished wire, and taking up the finished wire;

s5, stranding into rope: putting the finished wire rods obtained in the step (4) on a stranding machine for stranding and rope combining to obtain finished steel wire ropes;

s6, soaking: soaking the finished steel wire rope in vegetable oil for 1-2h, and drying in a vacuum environment at 0-80 ℃;

s7, heat treatment: heating the steel wire rope in a heat treatment furnace at the heating temperature of 780-880 ℃, cooling, cleaning, coating the coating assistant agent in a coating assistant agent groove, drying, galvanizing in a zinc pot at the temperature of 420-480 ℃, cooling to obtain a semi-finished wire rod, and taking up the wire rod;

s8, straightening: the steel wire rope subjected to heat treatment is subjected to prestress removal and straightening by a deformation straightener;

s9, coating treatment: and finally, carrying out injection coating treatment on the outer layer of the steel wire rope, wherein the injection material is high-corrosion-resistant plastic with good ductility, and the thickness of the coating is 2-3 mm.

Furthermore, the pass of the multi-pass drawing in the step 2 is 5.5-4.85-3.75-3.3-2.90-2.60-2.30 or 5.5-4.85-3.75-3.3-2.90-2.60-2.30-2.00.

Furthermore, the drawing pass in the step 4 is 2.3-2.00-1.75-1.55-1.35-1.2 or 2.00-1.75-1.55-1.35-1.2-1.1-1.0.

Further, the heating of the heat treatment furnace in the step 7 is in three stages, and the heating temperature of each stage is 780 ℃, 830 ℃ and 880 ℃.

The invention has the beneficial effects that:

according to the steel wire rope prepared by the technical scheme, the stress of the steel wire rope is well eliminated, the fatigue resistance, corrosion resistance, wear resistance and low relaxation performance of the steel wire rope are improved, the residual structural elongation of the steel wire rope is effectively eliminated, the service life is prolonged, and the steel wire rope can bear long-time underground operation.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

A production process of a fatigue-resistant steel wire rope comprises the following steps:

s1, surface treatment: placing a raw material wire on a pay-off rack, removing hot rolling oxide skin by mechanical descaling equipment, cleaning, then entering boron coating equipment for boron coating treatment, and finally entering drying equipment for drying to obtain a pretreated wire;

s2, drawing for the first time: placing the pretreated wire rod obtained in the first step on a drawing machine for drawing by 5.5-4.85-3.75-3.3-2.90-2.60-2.30, and treating by adopting a hot galvanizing aluminum alloy coating after drawing forming;

s3, phosphorization: carrying out phosphating treatment on the semi-finished wire rod obtained in the step 2 to form a phosphating film on the surface of the steel wire;

s4, drawing again: placing the wires after the phosphating treatment on a drawing machine for drawing for 2.3-2.00-1.75-1.55-1.35-1.2 to obtain finished wires, and taking up the wires;

s5, stranding into rope: putting the finished wire rods obtained in the step (4) on a stranding machine for stranding and rope combining to obtain finished steel wire ropes;

s6, soaking: soaking the finished steel wire rope in vegetable oil for 1-2h, and drying in a vacuum environment at 0-80 ℃;

s7, heat treatment: heating the steel wire rope in a heat treatment furnace, wherein the heat treatment furnace is heated into three sections, the heating temperature of each section is 780 ℃, 830 ℃ and 880 ℃, then cooling and cleaning the steel wire rope, coating a coating assistant agent in a coating assistant agent groove, drying the steel wire rope, galvanizing the steel wire rope in a zinc pot, and cooling the steel wire rope to obtain a semi-finished wire rod, and taking up the wire rod;

s8, straightening: the steel wire rope subjected to heat treatment is subjected to prestress removal and straightening by a deformation straightener;

s9, coating treatment: and finally, carrying out injection coating treatment on the outer layer of the steel wire rope, wherein the injection material is high-corrosion-resistant plastic with good ductility, and the thickness of the coating is 2-3 mm.

Example 2

A production process of a fatigue-resistant steel wire rope comprises the following steps:

s1, surface treatment: placing a raw material wire on a pay-off rack, removing hot rolling oxide skin by mechanical descaling equipment, cleaning, then entering boron coating equipment for boron coating treatment, and finally entering drying equipment for drying to obtain a pretreated wire;

s2, drawing for the first time: placing the pretreated wire rod obtained in the first step on a drawing machine for drawing by 5.5-4.85-3.75-3.3-2.90-2.60-2.30-2.00, and treating by a hot-dip galvanized aluminum alloy coating after drawing forming;

s3, phosphorization: carrying out phosphating treatment on the semi-finished wire rod obtained in the step 2 to form a phosphating film on the surface of the steel wire;

s4, drawing again: placing the wires after the phosphating treatment on a drawing machine for drawing for 2.3-2.00-1.75-1.55-1.35-1.2 to obtain finished wires, and taking up the wires;

s5, stranding into rope: putting the finished wire rods obtained in the step (4) on a stranding machine for stranding and rope combining to obtain finished steel wire ropes;

s6, soaking: soaking the finished steel wire rope in vegetable oil for 1-2h, and drying in a vacuum environment at 0-80 ℃;

s7, heat treatment: heating the steel wire rope in a heat treatment furnace, wherein the heat treatment furnace is heated into three sections, the heating temperature of each section is 780 ℃, 830 ℃ and 880 ℃, then cooling and cleaning the steel wire rope, coating a coating assistant agent in a coating assistant agent groove, drying the steel wire rope, galvanizing the steel wire rope in a zinc pot, cooling the steel wire rope at 480 ℃, obtaining a semi-finished wire rod, and taking up the wire rod;

s8, straightening: the steel wire rope subjected to heat treatment is subjected to prestress removal and straightening by a deformation straightener;

s9, coating treatment: and finally, carrying out injection coating treatment on the outer layer of the steel wire rope, wherein the injection material is high-corrosion-resistant plastic with good ductility, and the thickness of the coating is 2-3 mm.

Example 3

A production process of a fatigue-resistant steel wire rope comprises the following steps:

s1, surface treatment: placing a raw material wire on a pay-off rack, removing hot rolling oxide skin by mechanical descaling equipment, cleaning, then entering boron coating equipment for boron coating treatment, and finally entering drying equipment for drying to obtain a pretreated wire;

s2, drawing for the first time: placing the pretreated wire rod obtained in the first step on a drawing machine for drawing by 5.5-4.85-3.75-3.3-2.90-2.60-2.30-2.00, and treating by a hot-dip galvanized aluminum alloy coating after drawing forming;

s3, phosphorization: carrying out phosphating treatment on the semi-finished wire rod obtained in the step 2 to form a phosphating film on the surface of the steel wire;

s4, drawing again: placing the wire subjected to phosphating treatment on a drawing machine for drawing by 2.00-1.75-1.55-1.35-1.2-1.1-1.0 to obtain a finished wire, and taking up the wire;

s5, stranding into rope: putting the finished wire rods obtained in the step (4) on a stranding machine for stranding and rope combining to obtain finished steel wire ropes;

s6, soaking: soaking the finished steel wire rope in vegetable oil for 1-2h, and drying in a vacuum environment at 0-80 ℃;

s7, heat treatment: heating the steel wire rope in a heat treatment furnace, wherein the heat treatment furnace is heated into three sections, the heating temperature of each section is 780 ℃, 830 ℃ and 880 ℃, then cooling and cleaning the steel wire rope, coating a coating assistant agent in a coating assistant agent groove, drying the steel wire rope, galvanizing the steel wire rope in a zinc pot, and cooling the steel wire rope to obtain a semi-finished wire rod, and taking up the wire rod;

s8, straightening: the steel wire rope subjected to heat treatment is subjected to prestress removal and straightening by a deformation straightener;

s9, coating treatment: and finally, carrying out injection coating treatment on the outer layer of the steel wire rope, wherein the injection material is high-corrosion-resistant plastic with good ductility, and the thickness of the coating is 2-3 mm.

In conclusion, the steel wire rope has the advantages that the fatigue resistance, the corrosion resistance, the wear resistance and the low relaxation performance of the steel wire rope are greatly improved, the residual structural elongation of the steel wire rope is effectively eliminated, the service life is prolonged, and the steel wire rope can bear long-time underground operation.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.