CN107956174B - Manufacturing method of steel wire rope with diameter phi 264mm for large ocean engineering - Google Patents

Abstract

A method for manufacturing a steel wire rope with the diameter phi 264mm for large ocean engineering comprises the steps of twisting a metal strand core with the diameter of 18 x 7+ FC-54mm firstly, then twisting the outer strand with the diameter of (14 x 55WS +6 x 36 WS) -84.2mm at a series unit once, twisting a single-stranded steel wire rope with the diameter of 1 x 235 phi 101.6 mm, producing the steel wire rope by a wire dividing disc, and then combining the steel wire rope on a rope forming machine, wherein the twisting pitch of the steel wire rope is 4.55 times of the rope diameter, the pitch of a pre-deformation roller is 0.85 times of the twisting pitch, the pre-deformation bending depth is 1.0 times of the rope diameter, the specification of a wire pressing tile is the same as the rope diameter, and the twisting tension of each strand is ensured to be uniform in twisting. The steel wire rope has large diameter and large bearing capacity, and meets the requirements of the steel wire rope for large ocean engineering construction.

Description

Manufacturing method of steel wire rope with diameter phi 264mm for large ocean engineering

Technical Field

The invention relates to a method for manufacturing a large-scale marine engineering steel wire rope with the diameter of phi 264mm, and belongs to the technical field of metal product processing.

Background

With the continuous development of industries such as large hoisting, ships, excavators, salvage and offshore facilities, the demand of marine steel wire ropes is gradually increased, higher requirements are provided for the twisting quality, structural requirements and performance characteristics of the steel wire ropes, and for the special use environment of the sea, research is carried out on the aspect of the production process of marine large-diameter steel wire ropes, production process parameters are continuously optimized and improved, so that the physical quality of marine steel wire rope products of our company is improved, the market is expanded, and the requirements of our company on drawing ISO2408 steel wire rope-requirements are added. By designing a 6 x (14 x 55SWS +6 x 36 WS) + IWRC-264 mm steel wire rope production process and a manufacturing method thereof, the quality of a twisted product of the product is ensured by effectively controlling the twisting parameters of a steel wire rope strand and the twisting parameters of the steel wire rope in the production process, and the phi 264mm steel wire rope for large ocean engineering is successfully developed. The steel wire rope is sampled and tested in a detection center approved by CNAS, and all parameters reach ISO2408 Steel wire rope-requirement standard and design requirement. The method creates a pioneer for the steel wire rope for large ocean engineering and plays a positive role in participating in international market competition.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a method for manufacturing a large-scale steel wire rope with the diameter of phi 264mm for ocean engineering, which ensures the quality of a twisted product of the product by effectively controlling the twisting parameters of steel wire rope strands and effectively controlling the twisting parameters of a steel wire rope in the production process and solves the technical problem that no steel wire rope with the diameter of phi 264mm or more is produced in China.

The technical scheme of the invention is that a metal strand core is twisted, then an outer layer strand is twisted by a series unit for one time, and finally the outer layer strand and the metal rope core are combined on a finished rope.

The steel wire rope for large ocean engineering has a steel wire rope structure of 6 multiplied by (14 multiplied by 55SWS +6 multiplied by 36 WS) + IWRC, and consists of a metal rope core and 6 outer layer strands.

The invention successfully develops the phi 264mm steel wire rope for large-scale ocean engineering. The steel wire rope is sampled and tested in a detection center approved by CNAS, and all parameters reach ISO2408 Steel wire rope-requirement standard and design requirement. The method creates a pioneer for the steel wire rope for large ocean engineering and plays a positive role in participating in international market competition.

The invention has large breaking force and is widely applied to large-scale hoisting, ships, excavators, salvage, offshore facilities and the like.

Detailed Description

The following is described in further detail with reference to the examples:

the steel wire rope structure of the invention is 6 x (14 x 55SWS +6 x 36 WS) + IWRC, and is composed of a metal rope core and 6 outer layer strands.

The method comprises the steps of firstly twisting the metal strand core, then twisting the outer strand by a series unit at one time, and finally combining the outer strand and the metal rope core on a rope.

The implementation steps of the invention are as follows:

(1) strand manufacturing

Firstly twisting a metal strand core of 18 multiplied by 7+ FC-54mm, wherein the roller end distance of a rear deformer is 8.50 times of the diameter of a strand, the bending depth is 1.10 times of the diameter of the strand, then twisting an outer layer strand of (14 multiplied by 55WS +6 multiplied by 36 WS) -84.2mm in a tandem unit at one time, wherein the roller end distance of the rear deformer is 7.70 times of the diameter of a rope, and the bending depth is 0.90 times of the diameter of the rope;

in the twisting process of the strand ropes, all the brake ropes of the spool are adjusted to be consistent, the steel wires cannot be bent before a wire distributing plate, a wire pressing tile must be pressed tightly, a wire passing hole of a machine body and a rear deformation roller cannot be grooved to damage the steel wires, the surfaces of the strands are smooth, the strands and the strands are oilless, the stress of the strands is checked after the strand ropes are opened for 100 meters, then each strand is pulled out for 4 meters, twisting is checked in a natural state, and all the strands are controlled within-180-360 degrees;

(2) rope making

Twisting technological parameters: firstly twisting a 1 multiplied by 235-phi 101.6 mm single-stranded steel wire rope with a metal rope core, wherein the lay length is 9.0 times of the rope diameter, producing by using a wire dividing disc, then combining the steel wire rope on a rope forming machine, wherein the lay length of the steel wire rope is 4.55 times of the rope diameter, the space between pre-deformation rollers is 0.85 times of the rope lay length, the pre-deformation bending depth is 1.0 times of the rope diameter, the specification of a line pressing tile is the same as the rope diameter, and the uniform twisting tension of each strand is ensured in twisting.

The invention successfully develops the phi 264mm steel wire rope for large-scale ocean engineering. The steel wire rope is sampled and tested in a detection center approved by CNAS, and all parameters reach ISO2408 Steel wire rope-requirement standard and design requirement. The method creates a pioneer for the steel wire rope for large ocean engineering and plays a positive role in participating in international market competition.

Claims (1)

1. A method for manufacturing a steel wire rope with the diameter of phi 264mm for large ocean engineering, the steel wire rope structure is 6 x (14 x 55SWS +6 x 36 WS) + IWRC, and the steel wire rope structure is composed of a metal rope core and 6 outer layer strands, and is characterized by comprising the following implementation steps:

(1) strand manufacturing

Firstly twisting a metal strand core of 18 multiplied by 7+ FC-54mm, wherein the roller end distance of a rear deformer is 8.50 times of the diameter of a strand, the bending depth is 1.10 times of the diameter of the strand, then twisting an outer layer strand of (14 multiplied by 55WS +6 multiplied by 36 WS) -84.2mm in a tandem unit at one time, wherein the roller end distance of the rear deformer is 7.70 times of the diameter of a rope, and the bending depth is 0.90 times of the diameter of the rope;

in the twisting process of the strand ropes, all the brake ropes of the spool are adjusted to be consistent, the steel wires cannot be bent before a wire distributing plate, a wire pressing tile must be pressed tightly, a wire passing hole of a machine body and a rear deformation roller cannot be grooved to damage the steel wires, the surfaces of the strands are smooth, the strands and the strands are oilless, the stress of the strands is checked after the strand ropes are opened for 100 meters, then each strand is pulled out for 4 meters, twisting is checked in a natural state, and all the strands are controlled within-180-360 degrees;

(2) rope making

Twisting technological parameters: firstly twisting a 1 multiplied by 235-phi 101.6 mm single-stranded steel wire rope with a metal rope core, wherein the lay length is 9.0 times of the rope diameter, producing by using a wire dividing disc, then combining the steel wire rope on a rope forming machine, wherein the lay length of the steel wire rope is 4.55 times of the rope diameter, the space between pre-deformation rollers is 0.85 times of the rope lay length, the pre-deformation bending depth is 1.0 times of the rope diameter, the specification of a line pressing tile is the same as the rope diameter, and the uniform twisting tension of each strand is ensured in twisting.