CN109500129B - Manufacturing method of multipurpose zinc-coated steel - Google Patents
Manufacturing method of multipurpose zinc-coated steel Download PDFInfo
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- CN109500129B CN109500129B CN201811610816.0A CN201811610816A CN109500129B CN 109500129 B CN109500129 B CN 109500129B CN 201811610816 A CN201811610816 A CN 201811610816A CN 109500129 B CN109500129 B CN 109500129B
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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
Abstract
The invention belongs to the technical field of electric power, and particularly relates to a manufacturing method of multipurpose zinc-coated steel. The disclosed manufacturing method of the multipurpose zinc-coated steel comprises the following steps: the method comprises the following steps of performing chemical-free environment-friendly treatment on the surface of a steel wire, performing surface cleaning treatment on the steel wire by an abrasive belt machine, heating the cleaned steel wire by an intermediate frequency furnace, then simultaneously extruding the steel wire and two zinc strips in a continuous cladding machine to obtain zinc-coated steel, controlling the heating temperature of the intermediate frequency furnace to be 200-250 ℃, assembling an extrusion die and a guide die by the cladding machine according to the product requirements, controlling the size of a nose groove for die assembly to be 3-6mm according to the diameter of the steel wire, controlling the temperature of a die cavity to be 150-250 ℃, controlling the rotating speed of an extrusion wheel to be 3-7 revolutions, and controlling the extrusion speed to be 70-120 m/min; and carrying out composite metal drawing on the coated zinc-coated steel bus. The whole production process of the invention has no chemical pollution, is different from all the processes of the prior zinc-coated steel, and has flexible production.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a manufacturing method of multipurpose zinc-coated steel.
Background
At present, zinc-coated steel is widely used in the field of electric power, the using purposes and the manufacturing methods of the zinc-coated steel are different, and three methods are mainly adopted: 1. heating the zinc block by a container, and coating the zinc block on the surface of the steel wire; 2. heating a zinc block, and then extruding to the surface of a steel wire; 3. electroplating a zinc layer on the surface of the steel wire through electroplating; the first method is mainly used for galvanized steel wires for overhead conductors, a layer of gap exists between the steel wires and a zinc layer, the steel wires are very easy to fall off, the corrosion resistance life of the galvanized steel wires is greatly shortened, the uniformity of the galvanized layer thickness of the whole steel wire is difficult to ensure, the production difficulty of thick zinc plating is very high, the qualification rate is low, and the surface treatment of the steel wires and the heating of zinc blocks cannot meet the requirement of environmental protection. The second and third methods are mainly used for zinc-clad steel grounding wires, cable zinc-clad steel self-supporting wires, surface treatment of steel wires and heating of zinc blocks, and cannot meet the requirements of environmental protection and energy conservation.
Disclosure of Invention
The invention aims to provide a manufacturing method of multipurpose zinc-coated steel, aiming at solving the problems that the chemical pollution of the current zinc-coated steel production has serious hidden danger of environmental protection, and the zinc-coated steel with different purposes needs to adopt different production processes.
The invention adopts the following technical scheme for achieving the purpose:
a manufacturing method of multipurpose zinc-coated steel comprises the following steps:
a. chemically-free environment-friendly treatment of the surface of the steel wire: method for removing iron oxide by bending and shelling wire rod in drawing process
The skin enters a high-speed continuous wire drawing machine and is drawn by a pressure die to obtain a corresponding steel wire specification;
b. the steel wire can be selected to be subjected to heat treatment or not according to the use requirement of the product, the heating temperature of the heat treatment is 980-900 ℃, and the wiring speed is 3-20 m/min;
c. cleaning the surface of the steel wire by using an abrasive belt machine, selecting the mesh number of the abrasive belt according to the volume ratio of the zinc-coated layer to the zinc-coated steel, controlling the mesh number to be 70-120 meshes, ensuring the roughness of the surface of the steel wire and improving the binding force between the zinc layer and the surface of the steel wire;
d. heating the cleaned steel wire by an intermediate frequency furnace, then simultaneously extruding the steel wire and two zinc strips in a continuous cladding machine to obtain zinc-coated steel, controlling the heating temperature of the intermediate frequency furnace at 250 ℃ for processing, assembling an extrusion die and a guide die by the cladding machine according to the requirements of products, controlling the size of a nose groove for die assembly at 3-6mm according to the diameter of the steel wire, controlling the temperature of a die cavity at 250 ℃ for processing, controlling the rotating speed of an extrusion wheel at 3-7 revolutions, and controlling the extrusion speed at 70-120 m/min;
e. and (3) carrying out composite metal drawing on the coated zinc-coated steel bus, controlling the pressure die gap to be 0.2-0.8 mm, drawing by adopting a high-speed continuous wire drawing machine, and coiling by beating a shaft according to the required length of a product.
The invention provides a manufacturing method of a multi-purpose zinc-coated steel, which adopts acid-washing-free drawing of a steel wire, treatment of the surface of the steel wire by an abrasive belt machine, cold extrusion of a zinc strip by a continuous coating machine, integral drawing of composite metal, no chemical pollution in the whole production process and flexible production, and can produce the zinc-coated steel for an overhead conductor, a zinc-coated steel grounding wire and a cable zinc-coated steel self-supporting wire by adjusting an extrusion die, thereby covering the zinc-coated steel with different performances produced by the first three manufacturing methods; the zinc layer and the steel wire of the product are mutually permeated and are a physical joint surface, the risk of falling is avoided, the corrosion resistance of the product is at least 20 times that of a galvanized steel wire, the thickness of the zinc layer is uniform, the thickness of the zinc layer is flexibly adjusted and can reach 3mm at most.
Detailed Description
The invention will be described with reference to specific embodiments:
example 1:
a. rough drawing: selecting a phi 5.5mmQ195 hot rolled wire rod, adopting bending shelling to remove an iron sheet, entering a high-speed continuous wire drawing machine, adopting calcium-based wire drawing powder and a pressure die to draw a phi 3.2mm steel wire (with the tensile strength of 480 MPa), and using a 1250mm steel I-shaped wheel to beat a shaft and take up the wire.
b. Steel wire coating: paying off a 1250mm steel spool, putting the steel spool into an abrasive belt machine, selecting an 80-mesh abrasive belt, polishing the surface of the steel wire on line, and blowing the surface of the steel wire clean by an on-line air knife; heating the steel wire of the on-line intermediate frequency furnace to 250 ℃; selecting two pure zinc wire rods with the diameter of 9.5mm, coating a guide die with the diameter of 3.4mm, extruding a die with the diameter of 3.4mm, assembling the extruding die and the guide die in a die cavity of a coating machine, and enabling the sizes of the nasal grooves of the extruding die and the guide die to be 3.0 mm; heating the die cavity to 200 ℃, conveying 3 turns by an extrusion wheel, extruding into a zinc-coated steel bus of 3.4mm, and coiling by using a 1250mm steel I-shaped wheel;
c. drawing zinc-coated steel: the die matching process of the high-speed continuous wire drawing machine has the drawing speed of 5 m/s.
And selecting a take-up disk tool according to the requirements of customers, and beating a shaft to take up to obtain the low-strength thin zinc-coated steel with the phi of 1.5mm, the diameter of the steel is the smallest, the thickness of a zinc layer is the thinnest of 0.05mm, and the tensile strength of the steel is 1000MPa.
Example 2:
a. rough drawing: selecting a phi 12mmQ195 hot rolled wire rod, adopting bending shelling to remove an iron sheet, entering a high-speed continuous wire drawing machine, adopting calcium-based wire drawing powder and a pressure die to draw the wire rod into a phi 11.5mm steel wire (the tensile strength is 450 MPa), and using a 1250mm steel I-shaped wheel to beat a shaft and take up the wire.
b. And (5) coating the steel wire. Paying off a 1250mm steel spool, putting the steel spool into an abrasive belt machine, selecting an 80-mesh abrasive belt, polishing the surface of the steel wire on line, and blowing the surface of the steel wire clean by an on-line air knife; heating the steel wire of the on-line intermediate frequency furnace to 250 ℃; selecting two pure zinc wire rods with the diameter of 9.5mm, cladding a guide die with the diameter of 11.7mm, and an extrusion die with the diameter of 12mm, assembling the extrusion die and the guide die in a die cavity of a cladding machine, wherein the size distance between the extrusion die and a nasal groove of the guide die is 5.0 mm; heating the die cavity to 200 ℃, conveying the extrusion wheel for 5 revolutions, extruding the extrusion wheel into a 12mm zinc-coated steel bus, and coiling the bus by using a 1250mm steel I-shaped wheel; c. and (5) drawing the zinc-coated steel. The die matching process of the high-speed continuous wire drawing machine has the drawing speed of 3 m/s.
Selecting a take-up disk tool according to the requirements of customers, and beating and taking up the shaft to obtain low-strength thin zinc-coated steel with the diameter of phi 10mm, the largest diameter, the thinnest zinc layer thickness of 0.2mm and the tensile strength of 600 MPa;
example 3: a. Rough drawing: selecting phi 5.5mmQ195 hot rolled wire rod, adopting bending shelling to remove oxygen
And (3) melting the iron sheet, putting the iron sheet into a high-speed continuous wire drawing machine, drawing the iron sheet into a phi 2.0mm steel wire (with the tensile strength of 480 MPa) by using calcium-based wire drawing powder and a pressure die, and coiling the steel wire by using a 1250mm steel spool.
b. And (5) coating the steel wire. Paying off a 1250mm steel spool, feeding the steel spool into an abrasive belt machine, selecting a 120-mesh abrasive belt, polishing the surface of the steel wire on line, and blowing the surface of the steel wire clean by an on-line air knife; heating the steel wire of the on-line intermediate frequency furnace to 250 ℃; selecting two pure zinc wire rods with the diameter of 9.5mm, cladding a guide die with the diameter of 2.2mm, an extrusion die with the diameter of 4.0mm and the size of a nasal sulcus of 3.0mm, assembling the pure zinc wire rods in a die cavity of a cladding machine, heating the die cavity to 200 ℃, transmitting 3 turns by an extrusion wheel, extruding into zinc-clad steel buses with the diameter of 3.4mm, and coiling by using a 1250mm steel I-shaped wheel.
c. And (5) drawing the zinc-coated steel. The die matching process of the high-speed continuous wire drawing machine has the drawing speed of 5 m/s.
Selecting a take-up disk tool according to the requirements of customers, and beating and taking up the shaft to obtain low-strength thick zinc-coated steel with the diameter of 2.5mm, wherein the thickness of a zinc layer is 0.7mm at most, and the tensile strength is 550 MPa;
example 4:
a. rough drawing: selecting a phi 12mmQ195 hot-rolled wire rod, adopting bending shelling to remove an iron sheet, entering a high-speed continuous wire drawing machine, adopting calcium-based wire drawing powder and a pressure die to draw the wire rod into a phi 11.5mm steel wire (the tensile strength is 450 MPa), and using a 1250mm steel I-shaped wheel to take up the wire by beating a shaft;
b. and (5) coating the steel wire. Paying off a 1250mm steel spool, feeding the steel spool into an abrasive belt machine, selecting a 120-mesh abrasive belt, polishing the surface of the steel wire on line, and blowing the surface of the steel wire clean by an on-line air knife; heating the steel wire of the on-line intermediate frequency furnace to 250 ℃; selecting two disks of pure zinc wire rods with phi 9.5mm, coating a guide die with phi 11.7mm, assembling an extrusion die with phi 20mm and a nasal sulcus with the size of 5.0mm in a die cavity of a coating machine, heating the die cavity to 200 ℃, conveying 7 turns by an extrusion wheel, extruding into a zinc-coated steel bus with the thickness of 20mm, and beating a shaft by a steel I-shaped wheel with the thickness of 1250mm to take up the wire;
c. and (5) drawing the zinc-coated steel. A die matching process of a high-speed continuous wire drawing machine is adopted, and the drawing speed is 3 m/s;
selecting a take-up disk tool according to the requirements of customers, beating a shaft and taking up the wire to obtain the low-strength thick zinc-coated steel with the phi of 15mm, wherein the thickness of a zinc layer is 3.0mm at most, and the tensile strength is 500 MPa.
Example 5:
a. rough drawing: selecting a phi 5.5mm72A hot-rolled wire rod, adopting bending shelling to remove an iron sheet, entering a high-speed continuous wire drawing machine, adopting calcium-based wire drawing powder and a pressure die to draw a phi 3.2mm steel wire (with the tensile strength of 1200 MPa), and using a 1250mm steel I-shaped wheel to beat a shaft and take up the wire;
b. and (4) carrying out heat treatment on the steel wire. The heating temperature of the heat treatment is 980 ℃ and the uniform temperature is 900 DEG C
Degree, the running speed is 18 m/min.
c. And (5) coating the steel wire. Paying off a 1250mm steel spool, putting the steel spool into an abrasive belt machine, selecting an 80-mesh abrasive belt, polishing the surface of the steel wire on line, and blowing the surface of the steel wire clean by an on-line air knife; heating the steel wire of the on-line intermediate frequency furnace to 250 ℃; selecting two disks of pure zinc wire rods with phi of 9.5mm, coating a guide die with phi of 3.4mm, assembling an extrusion die with phi of 3.4mm and a nasal sulcus with the size of 3.0mm in a die cavity of a coating machine, heating the die cavity to 200 ℃, transmitting 3 turns by an extrusion wheel, extruding into zinc-coated steel buses with 3.4mm, and beating and taking up wires by a 1250mm steel I-shaped wheel;
d. and (5) drawing the zinc-coated steel. The die matching process of the high-speed continuous wire drawing machine has the drawing speed of 5 m/s.
Selecting a take-up reel according to the requirements of customers, and then, beating a shaft to take up the wire; obtaining the high-strength thin zinc-coated steel with the phi of 1.5mm, the maximum thickness of a zinc layer of 0.05mm and the tensile strength of 1800 MPa.
Example 6:
a. rough drawing: selecting phi 12mm72A hot rolled wire rods, adopting bending shelling to remove iron scale, entering a high-speed continuous wire drawing machine, adopting calcium-based wire drawing powder and a pressure die to draw into phi 11.5mm steel wires (tensile strength 1000 MPa), and using a 1250mm steel I-shaped wheel to beat a shaft for taking up wires.
b. And (4) carrying out heat treatment on the steel wire. The heating temperature of the heat treatment is 980 ℃ and the uniform temperature is 900 DEG C
Degree, the line speed is 3 meters per minute.
C. And (5) coating the steel wire. Paying off a 1250mm steel spool, putting the steel spool into an abrasive belt machine, selecting an 80-mesh abrasive belt, polishing the surface of the steel wire on line, and blowing the surface of the steel wire clean by an on-line air knife; heating the steel wire of the on-line intermediate frequency furnace to 250 ℃; selecting two pure zinc wire rods with the diameter of 9.5mm, cladding a guide die with the diameter of 11.7mm, an extrusion die with the diameter of 12mm and the size of a nasal sulcus of 5.0mm, assembling the pure zinc wire rods in a die cavity of a cladding machine, heating the die cavity to 200 ℃, transmitting 5 turns by an extrusion wheel, extruding into a zinc-coated steel bus with the diameter of 12mm, and coiling by using a 1250mm steel I-shaped wheel.
d. And (5) drawing the zinc-coated steel. The die matching process of the high-speed continuous wire drawing machine has the drawing speed of 3 m/s.
And selecting a take-up disk tool according to the requirements of customers, and beating a shaft to take up to obtain the high-strength thin zinc-coated steel with the phi of 10mm, wherein the thickness of a zinc layer is minimum 0.2mm, and the tensile strength is 800 MPa.
Example 7:
a. rough drawing: selecting phi 5.5mm72A hot rolled wire rod, adopting bending shelling to remove oxygen
And melting the iron sheet, putting the iron sheet into a high-speed continuous wire drawing machine, drawing the iron sheet into a phi 2.0mm steel wire (with the tensile strength of 12500 MPa) by using calcium-based wire drawing powder and a pressure die, and coiling the steel wire by using a 1250mm steel I-shaped wheel.
c. And (4) carrying out heat treatment on the steel wire. The heating temperature of the heat treatment is 980 ℃ and the uniform temperature is 900 DEG C
Degree, the line speed is 20 meters/minute.
d. And (5) coating the steel wire. Paying off a 1250mm steel spool and feeding the spool into an abrasive belt machine, and selecting 120 meshes
Sanding the surface of the steel wire on line by using a sanding belt, and blowing the surface of the steel wire clean by using an on-line air knife; heating the steel wire of the on-line intermediate frequency furnace to 250 ℃; selecting two pure zinc wire rods with the diameter of 9.5mm, cladding a guide die with the diameter of 2.2mm, an extrusion die with the diameter of 4.0mm and the size of a nasal sulcus of 3.0mm, assembling the pure zinc wire rods in a die cavity of a cladding machine, heating the die cavity to 200 ℃, transmitting 3 turns by an extrusion wheel, extruding into zinc-clad steel buses with the diameter of 4.0mm, and coiling by using a 1250mm steel I-shaped wheel.
c. And (5) drawing the zinc-coated steel. The die matching process of the high-speed continuous wire drawing machine has the drawing speed of 5 m/s.
Selecting a take-up disk according to the requirements of customers, beating a shaft and taking up the wire to obtain the high-strength zinc with the phi of 2.5mm
Steel is wrapped, the thickness of the zinc layer is 0.7mm at most, and the tensile strength is 800 MP.
Example 8:
a. rough drawing: selecting phi 12mm72A hot-rolled wire rods, adopting bending shelling to remove iron scale, entering a high-speed continuous wire drawing machine, adopting calcium-based wire drawing powder and a pressure die to draw into phi 11.5mm steel wires (tensile strength is 1000 MPa), and using a 1250mm steel I-shaped wheel to beat a shaft for taking up wires;
b. heat treatment of the steel wire: the heating temperature of the heat treatment is 980 ℃ and the uniform temperature is 900 DEG C
Degree, the wiring speed is 3 m/min;
c. steel wire coating: paying off a 1250mm steel spool, feeding the steel spool into an abrasive belt machine, selecting a 120-mesh abrasive belt, polishing the surface of the steel wire on line, and blowing the surface of the steel wire clean by an on-line air knife; heating the steel wire of the on-line intermediate frequency furnace to 250 ℃; selecting two disks of pure zinc wire rods with phi 9.5mm, coating a guide die with phi 11.7mm, assembling an extrusion die with phi 20mm and a nasal sulcus with the size of 5.0mm in a die cavity of a coating machine, heating the die cavity to 200 ℃, conveying 7 turns by an extrusion wheel, extruding into a zinc-coated steel bus with the thickness of 20mm, and beating a shaft by a steel I-shaped wheel with the thickness of 1250mm to take up the wire;
d. and (5) drawing the zinc-coated steel. The die matching process of the high-speed continuous wire drawing machine has the drawing speed of 3 m/s.
Selecting a take-up reel according to the requirements of customers, and then, beating a shaft to take up the wire;
obtaining the high-strength thick zinc-coated steel with the phi of 15mm, the maximum thickness of a zinc layer of 3.0mm and the tensile strength of 600 MPa.
Claims (1)
1. A manufacturing method of multi-purpose zinc-coated steel is characterized in that: the manufacturing method of the multipurpose zinc-coated steel comprises the following steps:
a. chemically-free environment-friendly treatment of the surface of the steel wire: the wire rod is subjected to bending shelling to remove oxide iron sheet, and enters a high-speed continuous wire drawing machine to draw a corresponding steel wire specification by using a pressure die;
b. the steel wire can be selected to be subjected to heat treatment or not according to the use requirement of the product, the heating temperature of the heat treatment is 980-900 ℃, and the wiring speed is 3-20 m/min;
c. cleaning the surface of the steel wire by using an abrasive belt machine, selecting the mesh number of the abrasive belt according to the volume ratio of the zinc-coated layer to the zinc-coated steel, controlling the mesh number to be 70-120 meshes, ensuring the roughness of the surface of the steel wire and improving the binding force between the zinc layer and the surface of the steel wire;
d. heating the cleaned steel wire by an intermediate frequency furnace, then simultaneously extruding the steel wire and two zinc strips in a continuous cladding machine to obtain zinc-coated steel, controlling the heating temperature of the intermediate frequency furnace at 250 ℃ for processing, assembling an extrusion die and a guide die by the cladding machine according to the requirements of products, controlling the size of a nose groove for die assembly at 3-6mm according to the diameter of the steel wire, controlling the temperature of a die cavity at 250 ℃ for processing, controlling the rotating speed of an extrusion wheel at 3-7 revolutions, and controlling the extrusion speed at 70-120 m/min;
e. and (3) carrying out composite metal drawing on the coated zinc-coated steel bus, controlling the pressure die gap to be 0.2-0.8 mm, drawing by adopting a high-speed continuous wire drawing machine, and coiling by beating a shaft according to the required length of a product.
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| CN112139241B (en) * | 2020-08-17 | 2022-08-09 | 浙江华甸防雷科技股份有限公司 | Multi-pass extrusion preparation method of bendable flexible zinc-coated steel lightning protection grounding wire |
| CN112742884B (en) * | 2020-12-16 | 2022-08-09 | 浙江华甸防雷科技股份有限公司 | Multistage drawing method of bendable flexible zinc-clad steel lightning protection grounding wire |
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| JPH11244935A (en) * | 1998-03-05 | 1999-09-14 | Hitachi Cable Ltd | Manufacture of zinc and aluminium coated steel wire |
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