CN108588397B - A kind of residual water remove device of Strip roll-type hardened face and method - Google Patents

A kind of residual water remove device of Strip roll-type hardened face and method Download PDF

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Publication number
CN108588397B
CN108588397B CN201810439966.3A CN201810439966A CN108588397B CN 108588397 B CN108588397 B CN 108588397B CN 201810439966 A CN201810439966 A CN 201810439966A CN 108588397 B CN108588397 B CN 108588397B
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roller
cooling zone
strip
quenching machine
pressure cooling
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CN108588397A (en
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付天亮
韩毅
邓想涛
王昭东
李勇
李家栋
田勇
王丙兴
刘国怀
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Northeastern University China
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54Furnaces for treating strips or wire
    • C21D9/56Continuous furnaces for strip or wire
    • C21D9/573Continuous furnaces for strip or wire with cooling
    • C21D9/5735Details
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62Quenching devices
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

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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

The invention belongs to metal plates and strips heat treatment equipment technical fields, a kind of residual water remove device of Strip roll-type hardened face and method are provided, which includes the residual water remove device in roller quenching machine high pressure cooling zone front, the residual water remove device in roller quenching machine high pressure cooling zone, the residual water remove device in the cooling section of roller quenching machine high pressure cooling zone-low pressure, the residual water remove device of the residual water remove device in roller quenching machine low pressure cooling zone and roller quenching machine low pressure cooling zone rear portion.This method can significantly remove the cooling residual water in the technical process upper surface such as the quenching of Strip roll-type, solid solution, control cooling, expand single-phase pressure fluerics area, realize the heat exchange of Strip upper surface uniformly, controllably, efficiently, and then it is obviously improved Strip heat treatment intensity of cooling, uniformity and plate shape, realize high quality heat treatment.

Description

A kind of residual water remove device of Strip roll-type hardened face and method
Technical field
The invention belongs to metal plates and strips heat treatment equipment technical fields, are related to a kind of residual water of Strip roll-type hardened face Remove device and method.
Background technique
Roller quenching machine cooling capacity is strong, it is cooling uniformly, it is cooling after Strip Shape it is good, can be used for carbon steel, stainless steel, The productions such as the quenching of the metal plates and strips such as special alloy, titanium alloy, aluminium alloy, solid solution, control cooling, are that large-scale heat-treatment lines are main Cooling apparatus-form.Roller quenching machine quenches mode using jet impulse, in high pressure, big flow cooling water high speed impact Strip Surface steam blanket is pierced through in lower surface, realizes that wall surface heat exchange efficiency is high, heat exchange is controllable directly with wall surface single-phase forced-convection heat transfer Property is good.
In Strip roll-type quenching process, following table wall jet cooling water is freely fallen by gravity, and lower surface approximation is penetrated Stream impact single-phase convection heat exchange, and Strip upper surface is trapped in table on Strip since remaining cooling water can not instantaneously drain Face influences jet impingement heat transfer process, when Strip being caused to quench upper surface heat transfer zone be divided into single-phase forced-convection heat transfer area, Film boiling range, nucleate boiling area, transient boiling range, small liquid accumulation regions etc. are a variety of, and heat transfer form is complicated, and heat transfer process is difficult to Effectively control.Due to the influence of residual water, Strip quenches Strip Shape Control, performance uniformity control becomes the technology hardly possible that industry is generally acknowledged Topic can only control Strip by experience and quench upper and lower surface water ratio, grope upper and lower surface and realize near symmetrical temperature drop process Technological parameter.Therefore, it is high to become relatively thin specification Strip quenching for the influence of the residual water in upper surface when how to reduce Strip quenching The key that straightness Strip Shape Control, middle think gauge Strip quenching high-performance uniformity control.
Patent CN204097526U discloses a kind of roller quenching machine with water flow blow device, in fire door entrance first Water flow blow device is installed on the upper frame of upper roller.The device can effectively prevent the water of quenching press to pass back into glowing furnace causing in furnace The problems such as refractory material destroys in roller-way plethora, roll stop and furnace is cleared away using air-blowing except Strip surface is residual with the present invention Water is to realize that it is unrelated that upper surface orderly controllably exchanges heat.
Patent CN104451117A is disclosed a kind of Quenching Sheet board-shape control method and device, is quenched using mild tension condition Fiery sheet metal plate shape, control device include screwdown gear, pressure roller, rollgang, equipment water jetting cooler etc..The purpose of this method is Thin gauge sheet metal Quenching Sheet shape is controlled by applying external constraint power, passes through control Strip quenching process pair with the present invention Claim heat exchange unrelated in the method for control panel shape.
Patent CN107002164A discloses the manufacturing method and quenching quenching unit of a kind of metal plate, in metal geneva The metal plate in quenching quenching is clamped using a pair of of pinch roll in body transition temperature section.This method passes through in metal plate The easily-deformable temperature range of material quenching process applies external constraint with control panel shape, passes through control Strip quenching process with the present invention Symmetrical heat exchange is unrelated in the method for control panel shape.
Summary of the invention
The object of the present invention is to provide a kind of residual water remove device of Strip roll-type hardened face and methods, can quickly have Effect removes Strip roll-type quenching process upper surface remnants cooling water, had both been able to achieve Strip quenching upper surface heat transfer zone and has effectively controlled System improves heat exchange efficiency, and can be effectively controlled Strip quenching upper and lower surface symmetrical cooling, realizes the shape control of high-precision Quenching Sheet System meets different size Strip heat treatment cooling technique demand.
The specific technical proposal is:
A kind of residual water remove device of Strip roll-type hardened face, including the residual water in roller quenching machine high pressure cooling zone front are clear Except device, the residual water remove device in roller quenching machine high pressure cooling zone, the cooling residual water in section of roller quenching machine high pressure cooling zone-low pressure Remove device, the residual water of the residual water remove device in roller quenching machine low pressure cooling zone and roller quenching machine low pressure cooling zone rear portion remove dress It sets;
The residual water remove device in roller quenching machine high pressure cooling zone front: strip between roller quenching machine and heat-treatment furnace One upper side of material upper surface, vertical upper and lower two groups of air-blowing nozzles of arrangement are for laterally purging Strip upper surface, jet nozzle side To vertical with Strip direction of advance, upper air-blowing nozzle spray site is Strip far from wide 1/3 position of air-blowing nozzle direction plate, under Air-blowing nozzle spray site is Strip close to wide 1/3 position of air-blowing nozzle direction plate;
The residual water remove device in roller quenching machine high pressure cooling zone: first group of roller quenching machine high pressure cooling zone or second Rectangle water plug is configured on the rear of the upper gap nozzle of group between roller-way, water plug is perpendicular to Strip direction of advance Length is the 2/3 of its front gap nozzle length, the width of water plug is 50~150mm, and draw water circular hole for water plug lower end 10~20mm of aperture, 50~150mm of pitch of holes, orifice distance Strip 5~15mm of upper surface, the connection of the water plug other end are taken out Water pump group;
The cooling residual water remove device in section of roller quenching machine high pressure cooling zone-low pressure: in roller quenching machine high pressure cooling zone Configuration one drains placing flat, perpendicular to Strip traffic direction between the upper roller-way of roller-way and low pressure cooling zone front first on last root Inclination circular hole gas jets, jet-impingement direction be roller quenching machine low pressure cooling zone direction, with vertical vertical line it is at 45 °~60 ° Angle, 2~5mm of nozzle bore, 5~15mm of spacing;
The residual water remove device in roller quenching machine low pressure cooling zone: refer to roller-way the past end on roller quenching machine low pressure cooling zone Starting odd number root roller-way is round plain-barreled roll, and even number root roller-way is spiral roller-way, and round plain-barreled roll is for flow subregion and water blocking, spiral Roller-way is for draining, and spiral roller-way rotates counterclockwise, 200~400mm of roller-way diameter, linear velocity are fixed as 30~50m/min, spiral shell Revolving roller-way and Strip upper surface distance is 3~5mm;
The residual water remove device in roller quenching machine low pressure cooling zone rear portion: on the root of roller quenching machine low pressure cooling zone end after roller-way Portion's configuration one draining placing flat, the inclination circular hole gas jets perpendicular to Strip traffic direction, jet-impingement direction is quenched for roll-type Lighter low pressure cooling zone direction, with vertical vertical line it is at 45 °~60 ° of angles, 2~5mm of nozzle bore, 5~15mm of spacing.
A kind of operating method of the above-mentioned residual water remove device of Strip roll-type hardened face, comprising the following steps:
The first step, Strip head reach upper and lower air-blowing nozzle when roller quenching machine high pressure cooling zone front end and open, strip Material tail portion is left upper and lower air-blowing nozzle when roller quenching machine high pressure cooling zone front end and is closed, upper and lower air-blowing jet nozzle pressure 0.4 ~0.6MPa, 2~10Nm of spray air flow3/min;
Second step, water plug is opened when Strip head reaches roller quenching machine high pressure cooling zone end, Strip tail Closing when water plug position is left in portion;
Third step, inclination circular hole gas jets are opened when Strip head reaches roller quenching machine high pressure cooling zone end, plate Inclination circular hole gas jets are closed when roller quenching machine low pressure cooling zone front end is left in band tail portion, tilt circular hole gas jets jet pressure 0.4~0.6MPa of power, 5~10Nm of spray air flow3/min;
4th step, spiral roller-way rotates when Strip head reaches roller quenching machine low pressure cooling zone front end, Strip tail Spiral roller-way stops when roller quenching machine low pressure cooling zone end is left in portion;
5th step, inclination circular hole gas jets are opened when Strip head reaches roller quenching machine low pressure cooling zone end, plate Inclination circular hole gas jets are closed when roller quenching machine low pressure cooling zone end is left in band tail portion, tilt circular hole gas jets jet pressure 0.4~0.6MPa of power, 5~10Nm of spray air flow3/min。
The residual water remove device of the Strip roll-type hardened face and method have such as compared with existing equipment technical level Lower advantage:
1, it is cooling can effectively to remove roller quenching machine high pressure for the residual water sweep-out method in roller quenching machine high pressure cooling zone front Area returns water to un-cooled plates band upper surface, and elimination returns water to just going out heat-treatment furnace, do not enter roller quenching machine high pressure cold-zone plate The pre- Quench of band upper surface, improves the instantaneous intensity of cooling of Strip and plate face is wide to cooling uniformity.
2, the residual water sweep-out method in roller quenching machine high pressure cooling zone can effectively extract the injection of roller quenching machine gap nozzle out Out, the residual water of cooling after heat exchange, increase the fluerics area that gap nozzle is ejected into Strip upper surface, reduce film The uneven heat transfer zone area such as state boiling section, nucleate boiling area, transient boiling range, small liquid accumulation regions, improves table on Strip The controllability and uniformity of face heat exchange, and then realize the cold rear high straightness Strip Shape Control of thin gauge Strip.
3, on the one hand roller quenching machine high pressure cooling zone-residual water sweep-out method in low pressure cooling section can effectively prevent roll-type and quench The residual water of cooling of a large amount of, the unordered flowings in lighter high pressure cooling zone rushes in roller quenching machine low pressure cooling zone along Strip upper surface, Influence the heat exchange of Strip upper surface continuous uniform;On the other hand roll-type is used only when executing Controlled cooling process due to Strip Quenching press low pressure cooling zone, this method can effectively clear the cooling residual water in low pressure cooling zone and be reverse flowed to high pressure along Strip upper surface Cooling zone avoids the pre- Quench in high temperature Strip upper surface, improves Strip intensity of cooling and uniformity.
4, the residual water sweep-out method in roller quenching machine low pressure cooling zone can effectively clear Strip for a long time in roller quenching machine The residual water of upper surface siltation when low pressure cooling zone is cooling, preventing Strip upper surface from occurring, pool boiling is cooling, and raising roll-type is quenched Lighter low pressure cooling zone continues cooling capacity, is conducive to that Strip is high-strength, uniform cooling.
5, on the one hand the residual water sweep-out method in roller quenching machine low pressure cooling zone rear portion can effectively prevent low pressure cooling zone cold Residual water along Strip upper surface flow to roller quenching machine after to outside, provided reliably for processes such as subsequent thermometric, position detections Detection environment;On the other hand when Strip executes Controlled cooling process, it can effectively prevent low pressure cooling zone cooling water to cold The secondary inhomogeneous cooling of Strip upper surface afterwards improves temperature-controlled precision and Strip performance uniformity.
6, above-mentioned 5 residual water sweep-out methods are used in combination, and can be obviously improved Strip heat treatment cooling procedure heat exchange effect Rate, heat exchange controllability and heat exchange uniformity, and then promote intensity of cooling and temperature control when Strip is quenched, is dissolved, control is cooling Uniformity improves Strip Shape after cooling, realizes the heat treatment cooling of Strip high quality.
Detailed description of the invention
Fig. 1 is the residual water sweep-out method device configuration schematic side view of Strip roll-type hardened face in the present invention;
Fig. 2 is the residual water sweep-out method device configuration schematic top plan view of Strip roll-type hardened face in the present invention.
In figure, 1 Strip;2 heat-treatment furnaces;3 roller quenching machines;4 high pressure cooling zones;5 low pressure cooling zones;6 high pressures are cooling Area front air-blowing nozzle;7 gap nozzles;8 water plugs;9 roller-ways;The cooling section of 10 high pressure cooling zone low pressure tilts circular hole gas blowout Mouth;11 round plain-barreled rolls;12 spiral roller-ways;13 low pressure cooling zone rear portions tilt circular hole gas jets;14 water plug pump groups.
Specific embodiment
The present embodiment provides a kind of specific embodiments of the residual water remove device of Strip roll-type hardened face of the present invention, such as scheme 1, shown in 2, implementation process is illustrated for selection 80mm thickness, 2500mm wide, 8m long Strip.1 head of Strip goes out at heat After reason furnace 2, when reaching 34 front end of high pressure cooling zone of roller quenching machine, high pressure cooling zone front air-blowing nozzle 6 is opened, whiff pressure 0.4~0.6MPa, spray air flow 10Nm3/ min, jet time 2min, it is cooling that 3 high pressure of roller quenching machine is left in 1 tail portion of Strip When 4 front end of area, high pressure cooling zone front air-blowing nozzle 6 is closed.1 head of Strip reaches 3 high pressure cooling zone of roller quenching machine, 4 end When end, water plug pump group 14 starts, and water plug 8 starts to draw water, when 8 position of water plug is left in 1 tail portion of Strip, draw water Device pump group 14 stops working.When 1 head of Strip reaches 35 front end of low pressure cooling zone of roller quenching machine, high pressure cooling zone-low Cooling section inclination circular hole gas jets 10 are pressed to open, 0.4~0.6MPa of whiff pressure, spray air flow 10Nm3/ min, jet time 2min, when 35 front end of low pressure cooling zone of roller quenching machine is left in 1 tail portion of Strip, the cooling section inclination of high pressure cooling zone-low pressure Circular hole gas jets 10 are closed.When 1 head of Strip reaches 35 front end of low pressure cooling zone of roller quenching machine, circle on low pressure quenching area 5 Shape plain-barreled roll 11 is rotated counterclockwise with 4m/min linear velocity, and 5 spiral roller-way 12 of low pressure quenching area is turned counterclockwise with 40m/min linear velocity It is dynamic.When 1 head of Strip reaches 35 end of low pressure cooling zone of roller quenching machine, round plain-barreled roll 11 is on low pressure quenching area 5 with 4m/ Min linear velocity rotates clockwise, and 1 backswing of Strip is cooling, and 5 spiral roller-way 12 of low pressure quenching area is still with 40m/min linear speed Degree rotates counterclockwise.Repeatedly, when spiral roller-way 12, which continues rotation time, reaches 12min, circular flat on low pressure quenching area 5 Roller 11 is rotated counterclockwise with 4m/min linear velocity, and Strip 1 is transported roller quenching machine 3, is left roll-type when 1 tail portion of Strip and is quenched When 35 end of low pressure cooling zone of lighter, round plain-barreled roll 11, spiral roller-way 12 stop operating.It quenches when 1 head of Strip reaches roll-type When 35 end of low pressure cooling zone of lighter, low pressure cooling zone rear portion tilts circular hole gas jets 13 and opens, and jet nozzle pressure 0.4~ 0.6MPa, spray air flow 10Nm33 low pressure cooling zone of roller quenching machine, 5 end is left in/min, jet time 2min, 1 tail portion of Strip When end, low pressure cooling zone rear portion tilts circular hole gas jets 13 and closes.So far, the residual water sweep-out method tool of Strip roll-type hardened face Body implementation process terminates.

Claims (2)

1. a kind of residual water remove device of Strip roll-type hardened face, which is characterized in that including roller quenching machine high pressure cooling zone The residual water remove device in front, the residual water remove device in roller quenching machine high pressure cooling zone, roller quenching machine high pressure cooling zone-low pressure cold But the residual water remove device in section, the residual water remove device in roller quenching machine low pressure cooling zone and roller quenching machine low pressure cooling zone rear portion Residual water remove device;
The residual water remove device in roller quenching machine high pressure cooling zone front: between roller quenching machine and heat-treatment furnace on Strip One upper side of surface, vertical upper and lower two groups of air-blowing nozzles of arrangement for laterally purging Strip upper surface, jet nozzle direction with Strip direction of advance is vertical, and upper air-blowing nozzle spray site is Strip far from wide 1/3 position of air-blowing nozzle direction plate, lower air-blowing Nozzle spray site is Strip close to wide 1/3 position of air-blowing nozzle direction plate;
The residual water remove device in roller quenching machine high pressure cooling zone: first group or second group of roller quenching machine high pressure cooling zone Rectangle water plug, length of the water plug perpendicular to Strip direction of advance are configured on the rear of upper gap nozzle between roller-way It is 50~150mm for the 2/3 of its front gap nozzle length, width of water plug, water plug lower end is drawn water circular hole aperture 10~20mm, 50~150mm of pitch of holes, orifice distance Strip 5~15mm of upper surface, the water plug other end connect suction pump Group;
The cooling residual water remove device in section of roller quenching machine high pressure cooling zone-low pressure: in roller quenching machine high pressure cooling zone end root Configuration one draining placing flat, inclining perpendicular to Strip traffic direction between the upper roller-way of upper roller-way and low pressure cooling zone front first Oblique circular hole gas jets, jet-impingement direction be roller quenching machine low pressure cooling zone direction, with vertical vertical line it is at 45 °~60 ° of angles, 2~5mm of nozzle bore, 5~15mm of spacing;
The residual water remove device in roller quenching machine low pressure cooling zone: refer to and start roller-way the past end on roller quenching machine low pressure cooling zone Odd number root roller-way is round plain-barreled roll, and even number root roller-way is spiral roller-way, and round plain-barreled roll is for flow subregion and water blocking, spiral roller-way For draining, the alternating of round plain-barreled roll is persistently rotated counterclockwise with spiral roller-way along rotating counterclockwise, and realizes roller quenching machine The removing of the residual residual water of water remove device in low pressure cooling zone;Spiral roller-way rotates counterclockwise, 200~400mm of roller-way diameter, linear velocity It is fixed as 30~50m/min, spiral roller-way and Strip upper surface distance are 3~5mm;
The residual water remove device in roller quenching machine low pressure cooling zone rear portion: roller-way rear portion is matched on the root of roller quenching machine low pressure cooling zone end A draining placing flat, the inclination circular hole gas jets perpendicular to Strip traffic direction are set, jet-impingement direction is roller quenching machine Low pressure cooling zone direction, with vertical vertical line it is at 45 °~60 ° of angles, 2~5mm of nozzle bore, 5~15mm of spacing.
2. a kind of operating method of the residual water remove device of Strip roll-type hardened face described in claim 1, which is characterized in that The following steps are included:
The first step, Strip head reach upper and lower air-blowing nozzle when roller quenching machine high pressure cooling zone front end and open, Strip tail Portion leaves upper and lower air-blowing nozzle when roller quenching machine high pressure cooling zone front end and closes, and upper and lower air-blowing jet nozzle pressure 0.4~ 0.6MPa, 2~10Nm of spray air flow3/min;
Second step, Strip head reach roller quenching machine high pressure cooling zone end when water plug open, Strip tail portion from Closing when opening water plug position;
Third step, inclination circular hole gas jets are opened when Strip head reaches roller quenching machine high pressure cooling zone end, Strip Inclination circular hole gas jets are closed when roller quenching machine low pressure cooling zone front end is left in tail portion, tilt circular hole gas jets whiff pressure 0.4~0.6MPa, 5~10Nm of spray air flow3/min;
4th step, Strip head reach roller quenching machine low pressure cooling zone front end when spiral roller-way rotate, Strip tail portion from Spiral roller-way stops when opening roller quenching machine low pressure cooling zone end;
5th step, inclination circular hole gas jets are opened when Strip head reaches roller quenching machine low pressure cooling zone end, Strip Inclination circular hole gas jets are closed when roller quenching machine low pressure cooling zone end is left in tail portion, tilt circular hole gas jets whiff pressure 0.4~0.6MPa, 5~10Nm of spray air flow3/min。
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CN112126753B (en) * 2020-09-08 2021-09-03 东北大学 Metal plate strip temperature measuring device and temperature control method for roller quenching machine
CN114672627B (en) * 2022-03-21 2022-12-09 东北大学 Symmetrical constraint roller type quenching device and quenching method for heat treatment reinforced aluminum alloy plate

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CN204412776U (en) * 2014-12-25 2015-06-24 秦皇岛首秦金属材料有限公司 The cold rear residual water blow device of a kind of hot rolled steel plate
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