CN111570558A - Zinc-based multi-element alloy coated steel wire and manufacturing method thereof - Google Patents
Zinc-based multi-element alloy coated steel wire and manufacturing method thereof Download PDFInfo
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- CN111570558A CN111570558A CN202010465033.9A CN202010465033A CN111570558A CN 111570558 A CN111570558 A CN 111570558A CN 202010465033 A CN202010465033 A CN 202010465033A CN 111570558 A CN111570558 A CN 111570558A
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- steel wire
- zinc
- alloy
- coating
- shot blasting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/042—Manufacture of coated wire or bars
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention relates to a zinc-based multi-element alloy coated steel wire, wherein the content of non-zinc metal elements in a coating is gradually reduced and gradiently changed from the surface layer to the inside of a zinc coating, and the preparation method of the coated steel wire comprises the following steps: (1) drawing the steel wire: primarily drawing the steel wire rod; (2) hot galvanizing of steel wires: forming a zinc coating on the surface of the steel wire substrate; (3) selecting shot materials for throwing/shot blasting: selecting one or more of alloy pills such as copper, cobalt, copper cobalt or cobalt nickel and the like as pills; (4) galvanized steel wire throwing/shot blasting: forming alloy doping on the surface of the zinc coating; (5) high-temperature thermal diffusion of the alloy plating layer; (6) and finally drawing and forming the steel wire. The invention adopts a throwing/shot blasting mode to dope other alloys on the zinc coating of the steel wire. Compared with an electroplating mode, the shot blasting doping mode is simple and flexible, the stress distribution on the surface of the steel wire is changed, and the doped alloy layer can be controlled on the surface of the zinc coating.
Description
Technical Field
The invention relates to a conveyor belt steel wire rope with a zinc-based multi-element alloy coating and a manufacturing method thereof.
Background
The conveyor belt is formed by twisting steel wires into a steel wire rope and then extruding rubber polymer around the steel wire rope. In the prior art, the steel wire surface layer used by the steel wire rope is provided with an alloy coating.
Publication No. CN110042220A discloses a method for manufacturing a steel wire with an alloy coating, the steel wire and a steel wire rope, relating to the technical field of manufacturing and production of steel wires, and the method for manufacturing the steel wire comprises the following steps: step 1, obtaining a steel wire matrix; step 2, passing the obtained steel wire substrate through a zinc pot with molten zinc liquid to obtain a steel wire substrate plated with a zinc layer, and mechanically wiping the steel wire substrate plated with the zinc layer to obtain the steel wire substrate with an iron-zinc alloy layer on the surface or the steel wire substrate with the iron-zinc alloy layer and a pure zinc layer on the surface; step 3, carrying out acid cleaning on the obtained steel wire matrix with the iron-zinc alloy layer on the surface, removing the pure zinc layer on the surface of the steel wire matrix, and obtaining the steel wire matrix with the iron-zinc alloy layer on the surface; and 4, drawing the obtained steel wire substrate with the iron-zinc alloy on the surface to obtain the steel wire with the required size. Studies have shown that the pure zinc layer reduces the fatigue resistance of the steel wire rope, and therefore, after the surface of the steel wire is galvanized, the pure zinc coating is removed by pickling.
Publication No. CN110184612A discloses a method for manufacturing a steel wire, comprising the steps of: hot galvanizing, namely obtaining a steel wire substrate, penetrating the obtained steel wire substrate into a zinc pot with molten zinc liquid to obtain the steel wire substrate plated with a zinc layer, and performing mechanical wiping treatment on the steel wire substrate plated with the zinc layer to obtain the steel wire substrate plated with an iron-zinc alloy layer, wherein the surface of the iron-zinc alloy layer of the steel wire substrate is provided with a recess, and a pure zinc layer is arranged in the recess; electroplating copper, namely feeding the obtained steel wire substrate plated with the iron-zinc alloy layer into an electroplating copper tank to obtain the steel wire substrate sequentially plated with a copper layer and the iron-zinc alloy layer from outside to inside; wherein a pure zinc layer is arranged in the recess; performing thermal diffusion treatment on the obtained steel wire substrate sequentially plated with the copper layer and the iron-zinc alloy layer from outside to inside to obtain the steel wire substrate plated with the copper-zinc alloy layer and the iron-zinc alloy layer; wherein the recess is free of a pure zinc layer; and drawing, namely drawing the obtained steel wire substrate plated with the copper-zinc alloy coating and the iron-zinc alloy coating to obtain the steel wire.
In both of the above two patent documents, it is mentioned that an alloy plating layer is formed on the surface of a steel wire by electrochemical methods of zinc plating, copper plating and M (such as nickel and cobalt) plating, M metal in a multi-element alloy plating layer is uniformly distributed in the whole plating layer, the utilization rate of precious metal elements (such as cobalt, molybdenum, nickel and the like) is not high, and electroplating is difficult to change the electroplating sequence due to the activity of the metal elements and the like, and industrial drainage treatment pressure is brought to production enterprises. How to efficiently utilize precious metal elements is always an important direction for industry development.
Disclosure of Invention
The invention provides a zinc-based multi-element alloy coating steel wire, wherein the content of non-zinc metal elements in a zinc-based alloy coating on the surface is gradually reduced from the surface layer to the inside of a zinc coating, and the weight percentage of the content of the non-zinc metal elements is 0.1-20%, preferably 1-10%. The thickness of the multicomponent alloy part in the coating is 0.1 micron to 50 microns, preferably 1 micron to 20 microns.
The invention also provides a manufacturing method of the zinc-based multi-element alloy coated steel wire, which comprises the following steps:
(1) and (4) drawing the steel wire. Primarily drawing the steel wire rod;
(2) hot galvanizing of steel wires. Enabling the steel wire matrix to penetrate through a hot galvanizing zinc pot, and forming a zinc coating on the surface of the steel wire matrix;
(3) shot blasting/shot blasting selection. Selecting one or more of copper, cobalt, copper cobalt or cobalt nickel alloy shots as throwing/shot blasting shots according to the alloy requirements of the steel wire surface coating, wherein the shot size is 70 or 80 meshes;
(4) and (4) throwing/shot blasting the galvanized steel wire. Performing polishing/shot blasting treatment on the surface of the galvanized steel wire to form alloy doping on the surface of a galvanized layer;
(5) the alloy plating layer is subjected to high-temperature thermal diffusion. Performing thermal diffusion on the coated steel wire obtained in the step (3) to form a zinc-based multi-alloy coating on the surface of the galvanized steel wire;
(6) and finally drawing and forming the steel wire. And drawing the steel wire with the plated layer after thermal diffusion to obtain the steel wire with the zinc-based alloy plated layer.
The size of the pill in the step (3) is 5 to 40 percent of the diameter of the steel wire, preferably 5 to 15 percent.
And (4) continuously shot blasting or shot blasting the galvanized steel wire with the shot materials for 30-120 seconds.
The temperature of the heat diffusion in the step (5) is 200-900 ℃, preferably 300-500 ℃.
Compared with the prior art, the invention has the advantages that: the invention adopts a throwing/shot blasting mode to dope other metals or alloys on the surface of the galvanized steel wire. Compared with an electroplating mode, the shot blasting doping mode is simple and flexible, the stress distribution on the surface of the steel wire is changed, the shot materials can be changed to realize different alloying on the surface of the galvanized steel wire, the doped alloy layer can be controlled on the surface of the matrix coating, and in addition, the environmental protection pressure caused by electroplating waste liquid can be obviously reduced.
Drawings
FIG. 1 is a cross-sectional structure of a steel wire coated with a zinc-based multi-element alloy according to example 1 of the present invention;
in the figure, the content gradient of 1 steel wire, 2 zinc layers, 3 zinc-copper alloy coating layers and 4 copper is decreased gradually.
Detailed Description
The present invention is described in further detail below with reference to examples, which are intended to be illustrative and not to be construed as limiting the invention.
Example 1
In this example, the surface of the galvanized steel wire was shot-blasted with copper shot. The steel wire is selected to be 72A, the diameter of an original wire rod is 6mm, the steel wire is subjected to acid cleaning and heat treatment drawing to be 2.0mm, then hot galvanizing treatment is carried out, and the thickness of a galvanized layer can reach 30 micrometers. The shot blasting material is pure copper shot material, the size of the shot is generally 5-40%, preferably 5-15% of the diameter of the steel wire, the diameter of the steel wire is 10% in the embodiment, namely the diameter of the shot is about 0.206mm, and the shot can be 70 or 80 meshes, preferably 80 meshes. The throwing/shot-blasting speed is 55-200 m/s, preferably 70-120 m/s, and the shot-blasting speed in this embodiment is 90 m/s. According to the coverage rate of the pellets on the surface of the galvanized steel wire and the residual amount of the copper pellets on the galvanized surface, the time for the pellets to act on the galvanized steel wire in a spraying manner is 30-120 seconds, preferably 80-100 seconds, and in the embodiment, 90 seconds is selected. The steel wire after the shot blasting treatment is put into a heat treatment furnace for heat diffusion treatment, wherein the temperature is 200-900 ℃, preferably 300-500 ℃, and the temperature is selected to be 350 ℃ in the embodiment. And (3) carrying out final drawing treatment on the steel wire subjected to thermal diffusion, wherein the steel wire is subjected to cold drawing to 1.8mm, the single-pass surface reduction rate is 1% -15%, preferably 3% -10%, and 3% -8% is selected in the embodiment.
FIG. 1 is a schematic diagram of a structure of a zinc-based copper alloy plated steel wire obtained in this example, in which the thickness of the alloy layer is about 4-8 μm, and the copper content (mass%) is about 8-11%.
Example 2
In this example, the surface of the galvanized steel wire is shot-blasted with copper-nickel shot. The steel wire is selected to be 72A, the diameter of an original wire rod is 6mm, the steel wire is subjected to acid cleaning and heat treatment drawing to be 2.0mm, then hot galvanizing treatment is carried out, and the thickness of a galvanized layer can reach 30 micrometers. The shot blasting material is made of copper-nickel alloy (the mass percent of copper is 80 percent, the mass percent of nickel is 20 percent) and is generally 5-40 percent, preferably 5-15 percent of the diameter of the steel wire, the diameter of the steel wire is 10 percent in the embodiment, namely the diameter of the shot is about 0.206mm, and the shot can be 70 or 80 meshes, preferably 80 meshes. The throwing/shot-blasting speed is 55-200 m/s, preferably 70-120 m/s, and the shot-blasting speed in this embodiment is 90 m/s. According to the coverage rate of the pellets on the surface of the galvanized steel wire and the residual amount of the copper-nickel pellets on the galvanized surface, the time of the pellet spraying action on the galvanized steel wire is 30-120 seconds, preferably 80-100 seconds, and 100 seconds is selected in the embodiment. The steel wire after the shot blasting treatment is put into a heat treatment furnace for heat diffusion treatment, wherein the temperature is 200-900 ℃, preferably 300-500 ℃, and 380 ℃ is selected in the embodiment. And (3) carrying out final drawing treatment on the steel wire subjected to thermal diffusion, wherein the steel wire is subjected to cold drawing to 1.8mm, the single-pass surface reduction rate is 1% -15%, preferably 3% -10%, and 3% -8% is selected in the embodiment.
The thickness of the zinc-based copper-nickel alloy coated steel wire obtained in the example is about 5-10 μm, wherein the copper content (mass percentage) is about 6-9%, and the nickel content is 1.0-2.0%.
Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A zinc-based multi-element alloy coated steel wire is characterized in that: the content of non-zinc metal elements in the zinc-based multi-element alloy coating is gradually reduced and gradiently changed from the surface layer to the inside of the zinc coating.
2. A zinc-based multi-alloy coated steel wire as claimed in claim 1, wherein: the content of the non-zinc metal elements decreases from the surface layer to the core part, and the content is 0.1 to 20 percent by weight.
3. A zinc-based multi-alloy coated steel wire as claimed in claim 2, wherein: the weight percentage of non-zinc metal elements in the coating is 1-10%.
4. A zinc-based multi-alloy coated steel wire as claimed in claim 1, wherein: the thickness of the multi-element alloy part in the plating layer is 0.1-50 microns.
5. A zinc-based multi-alloy coated steel wire as claimed in claim 4, wherein: the thickness of the multi-element alloy part in the plating layer is 1-20 microns.
6. A manufacturing method of zinc-based multi-element alloy coated steel wire is characterized in that: the method comprises the following steps:
(1) drawing the steel wire: primarily drawing the steel wire rod;
(2) hot galvanizing of steel wires: enabling the steel wire matrix to penetrate through a hot galvanizing zinc pot, and forming a zinc coating on the surface of the steel wire matrix;
(3) selecting shot materials for throwing/shot blasting: selecting one or more of copper, cobalt, copper cobalt or cobalt nickel alloy shots as shot/shot blasting shots according to the alloy requirement of the steel wire surface coating;
(4) galvanized steel wire throwing/shot blasting: performing polishing/shot blasting treatment on the surface of the galvanized steel wire to form alloy doping on the surface of a galvanized layer;
(5) high-temperature thermal diffusion of an alloy plating layer: performing thermal diffusion on the coated steel wire obtained in the step (3) to form a zinc-based multi-alloy coating on the surface of the galvanized steel wire;
(6) and (3) final drawing forming of the steel wire: and drawing the steel wire with the plated layer after thermal diffusion to obtain the steel wire with the zinc-based alloy plated layer.
7. The method of claim 6, wherein the method comprises the steps of: in the step (3), the size of the pill grains is 5 to 40 percent of the diameter of the steel wire.
8. The method of claim 6, wherein the method comprises the steps of: and (4) continuously shot blasting or shot blasting the galvanized steel wire with the shot materials for 30-120 seconds.
9. The method of claim 6, wherein the method comprises the steps of: the size of the pellets in the step (3) is 70 or 80 meshes.
10. The method of claim 6, wherein the method comprises the steps of: the temperature of the thermal diffusion in the step (5) is 200-900 ℃.
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| CN202010465033.9A CN111570558A (en) | 2020-05-28 | 2020-05-28 | Zinc-based multi-element alloy coated steel wire and manufacturing method thereof |
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| CN202010465033.9A CN111570558A (en) | 2020-05-28 | 2020-05-28 | Zinc-based multi-element alloy coated steel wire and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073282A (en) * | 2021-03-30 | 2021-07-06 | 法尔胜泓昇集团有限公司 | Low-nickel-content high-corrosion-resistance plated steel wire and processing method thereof |
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| JPH07214470A (en) * | 1994-02-02 | 1995-08-15 | Nippon Steel Corp | Shot-peening method to brass plated steel wire, metal shot-ball and its steel wire |
| EP1352992A2 (en) * | 2002-04-12 | 2003-10-15 | Ford Global Technologies, LLC | A method for selective control of corrosion using kinetic spraying |
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Application publication date: 20200825 |