CN109112260B - Heat treatment method of bluing straight steel wire - Google Patents

Heat treatment method of bluing straight steel wire Download PDF

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Publication number
CN109112260B
CN109112260B CN201710485291.1A CN201710485291A CN109112260B CN 109112260 B CN109112260 B CN 109112260B CN 201710485291 A CN201710485291 A CN 201710485291A CN 109112260 B CN109112260 B CN 109112260B
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steel wire
temperature furnace
temperature
low
tank
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CN109112260A (en
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姚惠彬
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Jiangsu Xiangying Hardware Spring Co ltd
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Jiangsu Xiangying Hardware Spring Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/63—Quenching devices for bath quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The invention discloses a heat treatment method of a bluing straight steel wire, which is characterized in that a steel wire with the diameter of 0.4-0.5mm sequentially passes through a pay-off device, a guide device, a high-temperature furnace, a quenching tank, a cooling tank, a low-temperature furnace, a tensioning device and a take-up device according to the conveying direction, and is subjected to heat treatment through high-temperature quenching and low-temperature tempering. The invention has the advantages that: the product obtained by the method has the advantages of reasonable structure, high toughness and tensile strength, strong twisting times and deformation bearing capacity and excellent linearity.

Description

Heat treatment method of bluing straight steel wire
Technical Field
The invention relates to a heat treatment method of a bluing straight steel wire.
Background
The existing steel wire is generally prepared by the steps of selecting raw materials, rough drawing, heat treatment, acid washing, phosphating, wire drawing and the like. The linearity, residual torsion number, torsion times and other performances are not ideal.
Disclosure of Invention
The invention provides a heat treatment method of a bluing straight steel wire, which aims to solve the problems.
The technical scheme of the invention is as follows: a heat treatment method of a bluing straight steel wire comprises the following steps:
a. the steel wire with the diameter of 0.4-0.5mm passes through a pay-off device, a guide device, a high-temperature furnace, a quenching tank, a cooling tank, a low-temperature furnace, a tensioning device and a take-up device in sequence according to the conveying direction, and is straightened and tensioned;
b. setting the paying-off speed and the taking-up speed of the steel wire to be 30-50 m/min;
c. when the steel wire is conveyed to the high-temperature furnace, controlling the temperature of the high-temperature furnace to be 820-860 ℃, heating the steel wire, and controlling the time for the steel wire to pass through the high-temperature furnace to be 6-20 seconds;
d. the steel wire passes through the quenching tank after being output from the high-temperature furnace, the temperature of the quenching liquid in the quenching tank is room temperature, and the steel wire is blued after passing through the quenching tank;
e. the steel wire is cooled through a cooling tank after being output from the quenching tank, and the temperature of the cooling liquid in the cooling tank is 65-75 ℃;
f. after being output from the cooling tank, the steel wire passes through a low-temperature furnace, the temperature of the low-temperature furnace is controlled to be 440-470 ℃, the steel wire is heated again, and the time for the steel wire to pass through the low-temperature furnace is 3-10 seconds;
g. and after being output from the low-temperature furnace, the steel wires pass through the tensioning device and are collected into coils by the take-up device.
Preferably, the quenching liquid is formed by mixing polyvinyl alcohol and water, and the mass ratio of the polyvinyl alcohol to the water is 1-5.
Further, the cooling liquid in the cooling tank is water.
Preferably, the length of the high-temperature furnace is 5-7 meters, and the length of the low-temperature furnace is 3-5 meters.
The invention has the beneficial effects that: the product obtained by the method has the advantages of reasonable structure, high toughness and tensile strength, strong twisting times and deformation bearing capacity and excellent linearity.
Detailed Description
The present invention will be described more fully hereinafter with reference to the accompanying examples, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Example 1
A heat treatment method of a bluing straight steel wire comprises the following steps:
a. a steel wire with the diameter of 0.4mm sequentially passes through a pay-off device, a guide device, a high-temperature furnace, a quenching tank, a cooling tank, a low-temperature furnace, a tensioning device and a take-up device according to the conveying direction, and is straightened and tensioned;
b. setting the paying-off speed and the taking-up speed of the steel wire to be 40 m/min;
c. when the steel wire is conveyed to the high-temperature furnace, controlling the temperature of the high-temperature furnace to be 820 ℃, heating the steel wire, wherein the length of the high-temperature furnace is 7 meters, and the time for the steel wire to pass through the high-temperature furnace is 10 seconds;
d. the steel wire passes through the quenching tank after being output from the high-temperature furnace, the temperature of the quenching liquid in the quenching tank is room temperature, the quenching liquid is formed by mixing polyvinyl alcohol and water, the mass ratio of the polyvinyl alcohol to the water is 2;
e. the steel wire is cooled through a cooling tank after being output from the quenching tank, the temperature of cooling liquid in the cooling tank is 65 ℃, and the cooling liquid in the cooling tank is water;
f. after being output from the cooling tank, the steel wire passes through a low-temperature furnace, the temperature of the low-temperature furnace is controlled to be 440 ℃, the steel wire is heated again, the length of the low-temperature furnace is 3 meters, and the time for the steel wire to pass through the low-temperature furnace is 4.5 seconds;
g. and after being output from the low-temperature furnace, the steel wires pass through the tensioning device and are collected into coils by the take-up device.
Example 2
A heat treatment method of a bluing straight steel wire comprises the following steps:
a. a steel wire with the diameter of 0.4mm sequentially passes through a pay-off device, a guide device, a high-temperature furnace, a quenching tank, a cooling tank, a low-temperature furnace, a tensioning device and a take-up device according to the conveying direction, and is straightened and tensioned;
b. setting the paying-off speed and the take-up speed of the steel wire to be 50 m/min;
c. when the steel wire is conveyed to the high-temperature furnace, controlling the temperature of the high-temperature furnace to be 850 ℃, heating the steel wire, wherein the length of the high-temperature furnace is 5 meters, and the time for the steel wire to pass through the high-temperature furnace is 6 seconds;
d. the steel wire passes through the quenching tank after being output from the high-temperature furnace, the temperature of quenching liquid in the quenching tank is room temperature, the quenching liquid is formed by mixing polyvinyl alcohol and water, the mass ratio of the polyvinyl alcohol to the water is 4;
e. the steel wire is cooled through a cooling tank after being output from the quenching tank, the temperature of cooling liquid in the cooling tank is 70 ℃, and the cooling liquid in the cooling tank is water;
f. after being output from the cooling tank, the steel wire passes through a low-temperature furnace, the temperature of the low-temperature furnace is controlled to be 460 ℃, the steel wire is heated again, the length of the low-temperature furnace is 3 meters, and the time for the steel wire to pass through the low-temperature furnace is 3.6 seconds;
g. and after being output from the low-temperature furnace, the steel wires pass through the tensioning device and are collected into coils by the take-up device.
Example 3
A heat treatment method of a bluing straight steel wire comprises the following steps:
a. a steel wire with the diameter of 0.5mm sequentially passes through a pay-off device, a guide device, a high-temperature furnace, a quenching tank, a cooling tank, a low-temperature furnace, a tensioning device and a take-up device according to the conveying direction, and is straightened and tensioned;
b. setting the paying-off speed and the take-up speed of the steel wire to be 30 m/min;
c. when the steel wire is conveyed to the high-temperature furnace, controlling the temperature of the high-temperature furnace to 860 ℃, heating the steel wire, wherein the length of the high-temperature furnace is 5 meters, and the time for the steel wire to pass through the high-temperature furnace is 10 seconds;
d. the steel wire passes through the quenching tank after being output from the high-temperature furnace, the temperature of quenching liquid in the quenching tank is room temperature, the quenching liquid is formed by mixing polyvinyl alcohol and water, the mass ratio of the polyvinyl alcohol to the water is 5;
e. the steel wire is cooled through a cooling tank after being output from the quenching tank, the temperature of cooling liquid in the cooling tank is 75 ℃, and the cooling liquid in the cooling tank is water;
f. after being output from the cooling tank, the steel wire passes through a low-temperature furnace, the temperature of the low-temperature furnace is controlled to be 470 ℃, the steel wire is heated again, the length of the low-temperature furnace is 3 meters, and the time for the steel wire to pass through the low-temperature furnace is 6 seconds;
g. and after being output from the low-temperature furnace, the steel wires pass through the tensioning device and are collected into coils by the take-up device.
The invention has the advantages that: the product obtained by the method has the advantages of reasonable structure, high toughness and tensile strength, strong twisting times and deformation bearing capacity and excellent linearity.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (4)

1. A heat treatment method of a bluing straight steel wire is characterized by comprising the following steps:
a. a steel wire with the diameter of 0.4-0.5mm sequentially passes through a pay-off device, a guide device, a high-temperature furnace, a quenching tank, a cooling tank, a low-temperature furnace, a tensioning device and a take-up device according to the conveying direction, and is straightened and tensioned;
b. setting the paying-off speed and the taking-up speed of the steel wire to be 30-50 m/min;
c. when the steel wire is conveyed to the high-temperature furnace, controlling the temperature of the high-temperature furnace to be 820-860 ℃, heating the steel wire, and controlling the time of the steel wire passing through the high-temperature furnace to be 6-20 seconds;
d. the steel wire passes through the quenching tank after being output from the high-temperature furnace, the temperature of the quenching liquid in the quenching tank is room temperature, and the steel wire is blued after passing through the quenching tank;
e. the steel wire is cooled through a cooling tank after being output from the quenching tank, and the temperature of the cooling liquid in the cooling tank is 65-75 ℃;
f. after the steel wire is output from the cooling tank, the steel wire passes through a low-temperature furnace, the temperature of the low-temperature furnace is controlled to be 440-470 ℃, the steel wire is heated again, and the time for the steel wire to pass through the low-temperature furnace is 3-10 seconds;
g. and after being output from the low-temperature furnace, the steel wires pass through the tensioning device and are collected into coils by the take-up device.
2. The heat treatment method of the bluing straight steel wire according to claim 1, wherein the quenching liquid is a mixture of polyvinyl alcohol and water, and the mass ratio of polyvinyl alcohol to water is 1 to 5.
3. The method for heat-treating a bluing straight steel wire according to claim 1, wherein the coolant in the cooling bath is water.
4. The heat treatment method of bluing straight steel wire according to claim 1, wherein the length of the high-temperature furnace is 5 to 7 m, and the length of the low-temperature furnace is 3 to 5 m.
CN201710485291.1A 2017-06-23 2017-06-23 Heat treatment method of bluing straight steel wire Active CN109112260B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01215928A (en) * 1988-02-25 1989-08-29 Nippon Steel Corp Production of high strength and high toughness galvanized steel wire
CN1147019A (en) * 1996-06-20 1997-04-09 汤铁琴 Bluing and low-carbon martensite heat treatment of high strength building steel bar
JPH10287932A (en) * 1997-04-17 1998-10-27 Bridgestone Metalpha Kk Steel wire for reinforcement for rubber product, its production, steel cord, and pneumatic radial tire
DE10243191C1 (en) * 2002-09-18 2003-11-06 Ruhstrat Gmbh Cooling of hot metal strip after hardening, and especially sawbands, has a number of cooling zones with cooling pads under a protective gas and a final zone under atmospheric conditions
CN101147928A (en) * 2007-10-19 2008-03-26 南通翔鹰钢丝弹簧有限公司 Blue shift straight filament wire and production method
CN101434025A (en) * 2008-12-01 2009-05-20 浙江长宏机电有限公司 Method for processing crankshaft capable of improving torques of winch and crank-pin
CN102292460A (en) * 2010-01-25 2011-12-21 新日本制铁株式会社 Wire material, steel wire, and process for production of wire material
CN102301024A (en) * 2010-02-01 2011-12-28 新日本制铁株式会社 Wire material, steel wire, and processes for production of those products

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01215928A (en) * 1988-02-25 1989-08-29 Nippon Steel Corp Production of high strength and high toughness galvanized steel wire
CN1147019A (en) * 1996-06-20 1997-04-09 汤铁琴 Bluing and low-carbon martensite heat treatment of high strength building steel bar
JPH10287932A (en) * 1997-04-17 1998-10-27 Bridgestone Metalpha Kk Steel wire for reinforcement for rubber product, its production, steel cord, and pneumatic radial tire
DE10243191C1 (en) * 2002-09-18 2003-11-06 Ruhstrat Gmbh Cooling of hot metal strip after hardening, and especially sawbands, has a number of cooling zones with cooling pads under a protective gas and a final zone under atmospheric conditions
CN101147928A (en) * 2007-10-19 2008-03-26 南通翔鹰钢丝弹簧有限公司 Blue shift straight filament wire and production method
CN101434025A (en) * 2008-12-01 2009-05-20 浙江长宏机电有限公司 Method for processing crankshaft capable of improving torques of winch and crank-pin
CN102292460A (en) * 2010-01-25 2011-12-21 新日本制铁株式会社 Wire material, steel wire, and process for production of wire material
CN102301024A (en) * 2010-02-01 2011-12-28 新日本制铁株式会社 Wire material, steel wire, and processes for production of those products

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Tao Zhou, Hao Yu , Shaoyang Wang a.Effect of microstructural types on toughness and microstructural optimization of ultra-heavy steel plate: EBSD analysis and microscopic fracture mechanism.《Materials Science and Engineering: A》.2016,第Volume 658卷150-158. *
张朝生.2000MPa热镀锌钢丝和2300MPa级PC钢绞线用线材的开发.国外桥梁.2000,(第02期),73-76+79. *

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