CN105779753B - One kind realizes Wire Rod ageing device and processing method using pulse current - Google Patents
One kind realizes Wire Rod ageing device and processing method using pulse current Download PDFInfo
- Publication number
- CN105779753B CN105779753B CN201610312828.XA CN201610312828A CN105779753B CN 105779753 B CN105779753 B CN 105779753B CN 201610312828 A CN201610312828 A CN 201610312828A CN 105779753 B CN105779753 B CN 105779753B
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- Prior art keywords
- wire rod
- soaking pit
- electrode
- pulse current
- pulse
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Classifications
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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
- 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
-
- 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
- C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
One kind realizes Wire Rod ageing device and processing method using pulse current, belongs to wire production and its product preparing technical field.The device is mainly made of the pulse power, tube type preheating furnace, tubular type soaking pit, decoiling equipment, pinch roller, draw roll, wrap-up and electrode.By outer field technology --- the promotion atoms permeating of pulse current and dislocation motion, by controlling pulse current density (50~300A/mm in control wire rod2), power frequency (20~80Hz), and combine the equal heat effect of tubular type soaking pit, improve material in rolling, the tissue defects produced in cooling procedure, mechanical property is improved, so as to fulfill the timeliness of Wire Rod.The present invention is short with aging time, positive effect, and can shorten the inventory time needed by natrual ageing, alleviates working capital of enterprises pressure.
Description
Technical field
The invention belongs to wire production and its product preparing technical field, is directed primarily to a kind of using pulse current realization
Wire Rod ageing device and its processing method.
Background technology
There are aging phenomenon, i.e. its section shrinkage for the Wire Rods such as high-strength prestress steel strand wires steel SWRH82B, 77B
Rate after hot rolling it is relatively low, it is necessary to place a period of time after, after the contraction percentage of area raising after could carry out following process, such as drawing.
Otherwise, it will frequently occur fracture of wire phenomenon because the contraction percentage of area is low and cause low production efficiency, stock utilization not high.
The timeliness of plant produced wire rod, usually carries out, its aging time i.e. inventory time in warehouse, take when
The time is imitated not less than 15 days, some has been even more than 40 days.This not only consumes the time of production and space, has also overstock enterprise
Circulating fund., sometimes can also be to production for steel wire products enterprise and aging time can also increase the corrosion of wire rod
Arrangement brings difficulty.Therefore, on the premise of performance requirement is met, shortening aging time as far as possible has larger practical significance.
At present, some external scholars are mainly by controlling chill formula, to obtain the wire rod of function admirable, to shorten timeliness
Time.Such as M.Kazeminezhad, A.KarimiTaheri is in Materials and Design (2003,24：On 415-421)
Paper " the The effect of controlled cooling after hot rolling on the delivered
Demonstrate,proved in mechanicalproperties of a commercial high carbon steel wire rod " by testing
The appropriately combined wire rod plasticity that is obtained than simple continuous coo1ing of bright continuous coo1ing and isothermal transformation is more preferable.In addition, Liu Yuxin,
Liu Xinhua, Sun Xiangyuan, Liu Xiuli, Lu Bin Shoudu Iron and Steel Co science and technology (2005, (5)：8~9,17) paper " the controlled rolling and controlled cooling work delivered on
Influence of the skill to 82B wire rod aging performances " by experiment it is concluded that, reduce finishing temperature, increase cooling velocity and appropriate
Laying temperature is raised, the mechanical property of wire rod can be improved, shortens aging time.
These measures for improving high-carbon steel wire rod mechanical property and shortening aging time, some have been obtained for applying, and
And achieve success.But smelter or steel wire products enterprise still Wire Rod is given a period of time to carry out when
Effect processing.As for the Wire Rod proposed by the present invention to after hot rolling, come soon using pulse current and combination temperature field action
The method that speed realizes timeliness, yet there are no open report.
In the case of the index that do not affect the mechanical properties, quick timeliness is realized, it will producing and selling is had change greatly, from
And also it can bring new, considerable economic benefit for smelter, steel wire products enterprise.
The content of the invention
Placed after Wire Rod hot rolling in a period of time, its intensity is basically unchanged or has a small amount of raising, plasticity (elongation percentage
And the contraction percentage of area) phenomenon that significantly improves, it is known as the timeliness of Wire Rod.The aging time that usual Wire Rod needs compares
It is long.In order to shorten aging time, inventory time is reduced, when the present invention proposes that one kind quickly realizes Wire Rod using pulse current
The special purpose device and its processing method of effect.
The present invention is realized by following technical measures：
One kind using pulse current realizes Wire Rod ageing device, it is characterised in that the device mainly by the pulse power,
Tube type preheating furnace, tubular type soaking pit, decoiling equipment, pinch roller, draw roll, wrap-up, and electrode composition.The pulse electricity
The positive and negative output terminal in source respectively by two electrodes with soaking pit moving Wire Rod be connected；The tubular type
Preheating furnace, tubular type soaking pit are sequentially arranged along wire rod uncoiling direction, ensure that wire rod will not be subject to obstacle in it during movement；It is described
Decoiling equipment, pinch roller, draw roll, wrap-up constitute the support motion system of Wire Rod, rigid line is coiled and is placed in out
Winding apparatus, after its one end is passed through draw roll, tube type preheating furnace, electrode one, tubular type soaking pit, electrode two, draw roll, into receipts
Winding apparatus, the device can drive wire rod to be moved to winding direction.The electrode shares 2, and electrode one is arranged at tube type preheating furnace
Between tubular type soaking pit, electrode two is arranged at tubular type soaking pit exit.The positive and negative output terminal of the pulse power is made by electrode
Pulse current is input to the moving Wire Rod in soaking pit, and during processing, the pulse power can be controlled in wire rod
Pulse current density scope is 50~300A/mm2, current frequency range be 20~80Hz.
A kind of processing method that Wire Rod timeliness is realized using pulse current, using real under pulse current as described above
Existing Wire Rod ageing device, it is characterised in that specific implementation step is as follows：Rigid line after hot rolling is coiled and is placed in decoiling equipment
On, then by wire rod through pinch roller, tubular type heating furnace for preheating, electrode one, tubular type soaking heating furnace, electrode two, draw roll, into
Enter wrap-up.Afterwards, preheating furnace power supply is opened, the wire rod for entering preheating furnace is preheated, during preheating temperature to be achieved
(200~350 DEG C), open the power supply of wrap-up, and wire rod moves to winding direction, starts to wind；Soaking pit electricity is opened at the same time
Source and the pulse power, carry out soaking and Electric Pulse Treatment, it is ensured that wire rod temperature (200~350 DEG C) to the wire rod for entering soaking pit
With its 300~600s of run time (being realized by controlling rolling speed) in soaking pit.
Wire Rod of the present invention refers to its carbon content more than 0.6%, and there are timeliness to show for its contraction percentage of area
Wire Rod of the diameter of elephant in below 16mm.
The principle of the present invention is, by outer field technology --- the promotion atoms permeating of pulse current and dislocation motion, knot
The equal heat effect (generally at 200~350 DEG C) of tubular type soaking pit is closed, improves the tissue that material produces in rolling, cooling procedure
Defect, improves mechanical property, so as to quickly realize the timeliness of Wire Rod.
Beneficial effects of the present invention：
Show there is the Wire Rod of certain temperature in course of conveying, certain by experimental study and theory analysis
Under current density, certain frequency, the effect of the pulse current of certain time, the timeliness of Wire Rod can be quickly realized, this method will
The inventory time of Wire Rod is reduced, condition of providing convenience is produced for smelter and steel wire products enterprise reasonable arrangement.
Brief description of the drawings
Fig. 1 is that one kind proposed by the present invention realizes Wire Rod ageing device using pulse current.
1- decoiling equipments；2- pinch rollers；3- tube type preheating furnaces；4- electrodes one；The 5- pulse powers；6- tubular type soaking pits；7-
Electrode two；8- draw rolls；9- wrap-ups；10- Wire Rods.
Embodiment
After now the embodiment of the present invention is specifically described in.
Technical scheme is described further below in conjunction with drawings and examples.Embodiment is merely to illustrate this
Invention, rather than limit the present invention in any way.
As shown in Figure 1, one kind using pulse current realizes Wire Rod ageing device, the device mainly by the pulse power 5,
Tube type preheating furnace 3, tubular type soaking pit 6, decoiling equipment 1, pinch roller 2, draw roll 8, wrap-up 9, and it is arranged at preheating furnace
Electrode 1 between soaking pit, the electrode 27 for being arranged at soaking pit exit form.The pulse power 5 it is positive and negative
Output terminal connects two electrodes 4,7 respectively, is input to pulse current by the two electrodes moving hard in soaking pit
Drum bar 10.During processing, it is 50~300A/ that the pulse power 5, which can control the pulse current density scope in wire rod 10,
mm2, current frequency range be 20~80Hz.
The process for realizing Wire Rod timeliness using device proposed by the present invention is：Rigid line after hot rolling is coiled and is placed in out
On winding apparatus 1, Wire Rod 10 is then passed through into pinch roller 2, tube type preheating furnace 3, electrode 4 one, tubular type soaking pit 6, electrode two
7th, draw roll 8, into wrap-up 9.Afterwards, 3 power supply of preheating furnace is opened, the Wire Rod 10 for entering preheating furnace 3 is carried out pre-
Heat, during preheating temperature to be achieved (200~350 DEG C), opens the power supply of wrap-up 9, and Wire Rod 10 is moved to winding direction,
Start to wind；6 power supply of soaking pit and the pulse power 5 are opened at the same time, soaking and electricity are carried out to the Wire Rod 10 for entering soaking pit 6
Pulse is handled, it is ensured that the temperature (200~350 DEG C) and its 300~600s of run time in soaking pit 6 of Wire Rod 10
(being realized by controlling rolling speed), and pulse current density (50~300A/mm2) and pulse current frequency (20~
80Hz)。
Embodiment 1
The Wire Rod of the present embodiment is SWRH82B, its specification is Φ 8mm, and chemical composition (mass fraction/%) is
0.82C, 0.26Si, 0.76Mn, 0.0010S, 0.0009P, 0.30Ni, 0.30Cr, remaining is Fe.Coiling after hot rolling is placed in
On decoiling equipment, then wire rod through pinch roller, tube type preheating furnace, electrode, tubular type soaking pit, electrode, draw roll, into winding
Device.Afterwards, preheating furnace power supply is opened, the wire rod for entering preheating furnace is preheated, during 260 DEG C of preheating temperature to be achieved, is opened
The power supply of wrap-up is opened, wire rod moves to winding direction, starts to wind；Soaking pit power supply and the pulse power are opened at the same time, it is right
Wire rod into soaking pit carries out soaking and Electric Pulse Treatment, it is ensured that 260 DEG C of the temperature of wire rod and its operation in soaking pit
Time 420s (is realized) by controlling rolling speed, and pulse current density 150A/mm2With pulse current frequency 60Hz.
After winding, after the wire rod of certain length is cut, wire rod after processing is sampled, carries out Mechanics Performance Testing, with evaluation
Timeliness effect.
To be contrasted, the SWRH82B wire rods for not carrying out ageing treatment are sampled, carry out the mechanics under the same terms
Performance test.
SWRH82B wire rod Tensile Test Results are shown, the wire rod of ageing treatment is carried out according to method proposed by the present invention, its
Tensile strength is 1279.6MPa, and (its index has met subsequently to draw the contraction percentage of area equivalent to the result of 15 days timeliness for 42.3%
Technological requirement is pulled out, that is, reaches timeliness purpose)；And the wire rod of ageing treatment is not carried out, its tensile strength is 1266.9MPa, section
Shrinking percentage is 32.1%.It can be seen from the above that intensity index increasing spoke is little, but plasticity index --- contraction percentage of area increase is obvious, this
Show to realize quick timeliness using the pulse current and temperature field, wire rod that apply.
Embodiment 2
The Wire Rod of the present embodiment is SWRH77B, its specification is Φ 12mm, and chemical composition (mass fraction/%) is
0.78C, 0.22Si, 0.70Mn, 0.0009S, 0.0009P, 0.26Ni, 0.25Cr, remaining is Fe.Coiling after hot rolling is placed in
On decoiling equipment, then wire rod through pinch roller, tube type preheating furnace, electrode, tubular type soaking pit, electrode, draw roll, into winding
Device.Afterwards, preheating furnace power supply is opened, the wire rod for entering preheating furnace is preheated, during 320 DEG C of preheating temperature to be achieved, is opened
The power supply of wrap-up is opened, wire rod moves to winding direction, starts to wind；Soaking pit power supply and the pulse power are opened at the same time, it is right
Wire rod into soaking pit carries out soaking and Electric Pulse Treatment, it is ensured that 320 DEG C of the temperature of wire rod and its operation in soaking pit
Time 510s (is realized) by controlling rolling speed, and pulse current density 260A/mm2With pulse current frequency 30Hz.
After winding, after the wire rod of certain length is cut, wire rod after processing is sampled, carries out Mechanics Performance Testing, with evaluation
Timeliness effect.
To be contrasted, the SWRH77B wire rods for not carrying out ageing treatment are sampled, carry out the mechanics under the same terms
Performance test.
SWRH77B wire rod Tensile Test Results are shown, the wire rod of ageing treatment is carried out according to method proposed by the present invention, its
Tensile strength is 1189.2MPa, and (its index is equivalent to 15 days timeliness as a result, having met follow-up for 31.6% for the contraction percentage of area
Drawing process requirement, that is, reach timeliness purpose)；And the wire rod of the transport under no pulse magnetic fields, its tensile strength are
1176.3MPa the contraction percentage of area 24.6%.It can be seen from the above that intensity index increasing spoke is little, but plasticity index --- section shrinkage
Rate increase is obvious, this shows equally to realize quick timeliness using the pulse current and temperature field, wire rod that apply.
By embodiment as it can be seen that in the case of appropriate pulse current parameter is chosen, it is possible to achieve Wire Rod it is quick when
Effect without carrying out artificial aging again.
Claims (3)
1. one kind realizes Wire Rod ageing device using pulse current, it is characterised in that the device is pre- by the pulse power, tubular type
Hot stove, tubular type soaking pit, decoiling equipment, pinch roller, draw roll, wrap-up and electrode composition；
The positive and negative output terminal of the pulse power respectively by two electrodes with soaking pit moving Wire Rod be connected
Connect；The tube type preheating furnace, tubular type soaking pit are sequentially arranged along wire rod uncoiling direction, ensure that wire rod will not during movement in it
It is subject to obstacle；The decoiling equipment, pinch roller, draw roll, wrap-up constitute the support motion system of Wire Rod, firmly
Drum is provided at decoiling equipment, by its one end through draw roll, tube type preheating furnace, electrode one, tubular type soaking pit, electrode two, draw
After entering roller, into wrap-up, wrap-up can drive wire rod to be moved to winding direction；The electrode shares 2, wherein electrode
One is arranged between tube type preheating furnace and tubular type soaking pit, and electrode two is arranged at tubular type soaking pit exit；
The pulse power, its positive and negative output terminal connect two electrodes respectively, input pulse current by the two electrodes
To the moving Wire Rod in soaking pit；During processing, the pulse current density scope in pulse power source control wire rod
For 50~300A/mm2, current frequency range be 20~80Hz.
A kind of 2. processing method that Wire Rod timeliness is quickly realized using pulse current, using the pulse described in claim 1
Wire Rod ageing device is realized under electric current, it is characterised in that specific implementation step is as follows：Rigid line after hot rolling is coiled and is placed in
On decoiling equipment, then by wire rod through pinch roller, tube type preheating furnace, electrode, tubular type soaking pit, electrode, draw roll, into receipts
Winding apparatus；Afterwards, preheating furnace power supply is opened, the wire rod for entering preheating furnace is preheated, 200~350 DEG C to be achieved of preheating
During temperature, the power supply of wrap-up is opened, wire rod moves to winding direction, starts to wind；Open soaking pit power supply and arteries and veins at the same time
Rush power supply, soaking and Electric Pulse Treatment carried out to the wire rod for entering soaking pit, it is ensured that 200~350 DEG C of wire rod temperature and its
300~600s of run time in soaking pit.
3. the processing method according to claim 2 that Wire Rod timeliness is quickly realized using pulse current, its feature exist
In the Wire Rod refers to its carbon content more than 0.6%, and there are the diameter of aging phenomenon to exist for its contraction percentage of area
The Wire Rod of below 16mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312828.XA CN105779753B (en) | 2016-05-12 | 2016-05-12 | One kind realizes Wire Rod ageing device and processing method using pulse current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312828.XA CN105779753B (en) | 2016-05-12 | 2016-05-12 | One kind realizes Wire Rod ageing device and processing method using pulse current |
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| Publication Number | Publication Date |
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| CN105779753A CN105779753A (en) | 2016-07-20 |
| CN105779753B true CN105779753B (en) | 2018-05-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109136800B (en) * | 2018-11-09 | 2020-12-01 | 中国石油大学(华东) | Cyclic pulse electric treatment device and method for nickel-titanium shape memory alloy single crystal |
| CN110592327A (en) * | 2019-08-30 | 2019-12-20 | 西安理工大学 | Heat-assisted electric pulse processing method and device |
| CN113122697A (en) * | 2021-02-24 | 2021-07-16 | 中铝材料应用研究院有限公司 | Accelerated aging treatment method for metal plate strip |
| CN114231719B (en) * | 2021-12-14 | 2022-12-20 | 北京科技大学 | Electric pulse treatment method for improving strength of high-carbon steel hot-rolled wire |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944692A (en) * | 2006-10-24 | 2007-04-11 | 江苏法尔胜技术开发中心 | High frequency electric pulse continous heat processing method for cold drawing medium and high carbon steel wire |
| CN103614673A (en) * | 2013-04-11 | 2014-03-05 | 中南大学 | Method for rapid aging heat treatment of aluminum alloy |
| CN205710851U (en) * | 2016-05-12 | 2016-11-23 | 北京科技大学 | A kind of application pulse current realizes Wire Rod ageing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6026818B2 (en) * | 1980-02-15 | 1985-06-26 | 住友金属工業株式会社 | Continuous annealing equipment for cold rolled steel sheets |
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2016
- 2016-05-12 CN CN201610312828.XA patent/CN105779753B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944692A (en) * | 2006-10-24 | 2007-04-11 | 江苏法尔胜技术开发中心 | High frequency electric pulse continous heat processing method for cold drawing medium and high carbon steel wire |
| CN103614673A (en) * | 2013-04-11 | 2014-03-05 | 中南大学 | Method for rapid aging heat treatment of aluminum alloy |
| CN205710851U (en) * | 2016-05-12 | 2016-11-23 | 北京科技大学 | A kind of application pulse current realizes Wire Rod ageing device |
Non-Patent Citations (1)
| Title |
|---|
| 热轧SWRH82B盘条在线余温时效探讨;陈志源等;《金属制品》;20090430;第35卷(第2期);37-39,47 * |
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