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Method for manufacturing highly corrosion-resistant steel wire rope for fishery

A production method and technology of steel wire rope, applied in the field of fishery steel wire rope, can solve the problems of wear, unsuitable pure aluminum coating, short service life of steel wire rope, etc.

Active Publication Date: 2015-09-23
天津市新天钢钢线钢缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, all domestic steel wire manufacturers have worked hard on the thickness of the zinc layer, but the thickness of the zinc layer cannot be increased infinitely, and the excessive thickness of the zinc layer in hot-dip will cause local accumulation of the zinc layer on the surface of the steel wire. The zinc layer falls off during the manufacturing process
Existing zinc layer thickness restricts corrosion resistance of galvanized steel wire
[0005] In addition, in order to ensure the anti-corrosion effect of the steel wire rope, the thickness of the coating layer of the steel wire used for making the rope must be guaranteed in the production of domestic galvanized steel wire rope, so the method of first drawing and then plating is often used for production. Although the thickness of the zinc layer of the steel wire rope is guaranteed, the thickness of the steel wire The strength will drop sharply in the process of hot-dip galvanizing, and the toughness of the steel wire will decrease accordingly. Compared with the steel wire before plating, the bending will decrease 3-4 times and the twisting will decrease 8-10 times. In the investigation of the use of zinc steel wire ropes, most of the scrapping of galvanized steel wire ropes is caused by the early scrapping of steel wire ropes due to the low toughness of the steel wire ropes.
[0006] Pure aluminum coating can effectively solve the corrosion problem of steel wire rope. Experiments show that aluminum coating can form a passivation layer on steel wire, which can effectively alleviate the corrosion of steel wire in seawater, but aluminum coating cannot form an effective primary battery effect in seawater. The steel wire rope will inevitably wear out during the twisting process, causing the steel to be directly exposed in seawater, which will cause internal corrosion. The pure aluminum coating is not suitable for the field of steel wire for rope making
[0007] However, the current hot-dip galvanized and then hot-dip galvanized steel wire with aluminum rare earth alloy layer improves the corrosion resistance, but the strength and toughness of the steel wire cannot meet the requirements. The life of the steel wire rope is short, and it still cannot meet the strength, toughness, Life expectancy and many other requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The manufacture method of high anticorrosion fishery steel wire rope of the present invention comprises the following steps:

[0036] 1. Select high-carbon steel wire rods, use hydrochloric acid to pickle the wire rods, wash away impurities such as floating rust and scale on the surface of the wire rods, and prepare for phosphating, and put the pickled wire rods into the phosphating pool For 5 minutes, the pyrophosphate solution at about 94°C in the phosphating pool will coat the surface of the wire rod with a dense phosphating film. The phosphating film has two functions, one is its own lubrication, and the other is its own lubrication. The special structure can bring lubricating powder into the wire drawing machine to enhance lubrication;

[0037] 2. Use a straight-in wire drawing machine to draw the wire rod in separate passes, and then heat it to about 908°C for lead quenching. The quenching temperature is about 549°C, and then use a straight-in wire drawing machine...

Embodiment 2

[0054] The manufacture method of high anticorrosion fishery steel wire rope of the present invention comprises the following steps:

[0055] 1. Choose medium-carbon steel wire rod, pickle the wire rod with hydrochloric acid, put the pickled wire rod into the phosphating pool for 3 minutes, and the phosphating pool is a pyrophosphate solution at about 87°C, so that the wire rod The surface is coated with a dense phosphating film;

[0056] 2. The wire rod is drawn in separate passes by a straight wire drawing machine, and then heated to about 892°C for lead quenching. The quenching temperature is about 542°C, and the quenched semi-finished steel wire is again used by a straight wire drawing machine. Pulling in separate lanes,

[0057] 3. Carry out galvanizing operation on the steel wire obtained in step 2, and the running speed is 28m / min. The specific steps are:

[0058] (1) Put the full steel wire I-shaped wheel on the pay-off bracket, and the steel wire first enters the ope...

Embodiment 3

[0073] The manufacture method of high anticorrosion fishery steel wire rope of the present invention comprises the following steps:

[0074] 1. Select high-carbon steel wire rods, pickle the wire rods with hydrochloric acid, put the pickled wire rods into the phosphating pool for 5 minutes, and the phosphating pool is a pyrophosphate solution at about 90°C, so that the wire rods The surface is coated with a dense phosphating film;

[0075] 2. The wire rod is drawn in separate passes by a straight-in wire drawing machine, and then heated to about 900°C for lead quenching. The quenching temperature is about 545°C. Pulling in separate lanes,

[0076] 3. Carry out galvanizing operation to the steel wire obtained in step 2, and the running speed is 25m / min. The specific steps are:

[0077] (1) Put the full steel wire I-shaped wheel on the pay-off bracket, and the steel wire enters the open flame furnace first, and the open flame furnace is filled with lead liquid at a temperature...

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Abstract

The invention discloses a method for manufacturing a highly corrosion-resistant steel wire rope for fishery. The method comprises the steps of selecting medium-and-high-carbon steel wire rods, conducting acid pickling, parkerising, drawing, patenting, redrawing and galvanizing in sequence, feeding steel wires into an open-fire furnace with a feeding speed of 20-28 m / min to improve the structure of the steel wires, and conducting alkali washing, water scrubbing, acid pickling and water scrubbing on the steel wires in sequence; conducting plating assisting, drying and galvanizing on the steel wires in sequence; conducting plating assisting and drying again and galvanizing an aluminum alloy layer, and drawing qualified steel wires again multiple times to obtain steel wires in the required specification; spooling the steel wires respectively, and stranding the steel wires to obtain wire strands; finally, twisting a rope core and the wire strands to obtain the steel wire rope. By the adoption of the manufacturing method, on the premise that corrosion resistance is improved, the steel wire rope with higher strength and high tenacity can be produced, and the service life of the steel wire rope for marine fishing is prolonged greatly.

Description

technical field [0001] The invention belongs to the technical field of steel wire ropes for fishery, and in particular relates to a manufacturing method of high anti-corrosion fishery steel wire ropes. Background technique [0002] So far, steel wires for fishery wire ropes in the domestic market mostly use galvanized as the protective coating of steel wires, that is, pure zinc layer. Seawater tests show that steel wires with pure zinc layer can play a more complete protective role when soaked in seawater. However, the seawater test cannot replace the environment in which the steel wire rope is in use. The time for the steel wire rope to be immersed in seawater is limited when operating at sea. The corrosion rate of galvanized steel wire is exacerbated. No matter in which environment, the corrosion resistance of pure zinc-coated steel wire is proportional to the thickness of the zinc layer. [0003] Domestic mainstream galvanizing methods are divided into two types, electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D07B1/06B21C1/02C23C2/06C23C2/38C21D9/64
CPCB21C1/02C21D9/64C23C2/06C23C2/38D07B1/06D07B2205/3021Y02P10/20
Inventor 王雅志翟巧玲杨同敬俞振根王志永李鹏刘毅苏子波王俊宋俊强王国良朱彦盛吴永成孔庆林金鑫
Owner 天津市新天钢钢线钢缆有限公司
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