CN108070701A - A kind of annular quenching unit and its application process - Google Patents

A kind of annular quenching unit and its application process Download PDF

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Publication number
CN108070701A
CN108070701A CN201810098872.4A CN201810098872A CN108070701A CN 108070701 A CN108070701 A CN 108070701A CN 201810098872 A CN201810098872 A CN 201810098872A CN 108070701 A CN108070701 A CN 108070701A
Authority
CN
China
Prior art keywords
water
steel pipe
water ring
rack
annular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810098872.4A
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Chinese (zh)
Inventor
高璐
杜学斌
徐能惠
李永辉
邵国栋
王建国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Heavy Machinery Research Institute Co Ltd
Original Assignee
China National Heavy Machinery Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China National Heavy Machinery Research Institute Co Ltd filed Critical China National Heavy Machinery Research Institute Co Ltd
Priority to CN201810098872.4A priority Critical patent/CN108070701A/en
Publication of CN108070701A publication Critical patent/CN108070701A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C21D1/667Quenching devices for spray quenching
    • 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
    • C21D9/08Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/085Cooling or quenching

Abstract

The present invention provides a kind of annular quenching unit and its application processes, including water ring, hood, rollgang, rack, lifting and guider, sink, water ring and hood are placed in rack, hood and rack cover water ring, and rack lower surface is connected with lifting and guider, sink is below rack.Water ring sets multigroup, every group of independent control, can be according to the water of each water ring of technique adjustment.Lifting and guider can make water ring, hood and rack integral elevating certain distance, ensure that water ring is consistent with steel pipe centre-height.Spray nozzle device in water ring can the certain angle of integral-rotation; ensure that the water that nozzle sprays is ejected into tangential direction on outer surface of steel tube; the steam blanket that surface generates when breaing up steel pipe quenching; improve steel tube surface heat transfer boundary condition; improve steel pipe cooling velocity; ensure to obtain quenched martensite tissue, and prevent quenching water from being returned by steel pipe inner wall reflux in glowing furnace.

Description

A kind of annular quenching unit and its application process
Technical field
The invention belongs to steel pipe quenching technology fields, and in particular to a kind of annular quenching unit and its application process.
Background technology
When being quenched to steel pipe, the water of steel tube surface is vaporized by heating, is formed one layer of steam blanket, is made steel pipe and water Isolation, since steam blanket is the non-conductor of heat, so reducing steel pipe cooling velocity.And cooling velocity during steel pipe quenching will More than critical cooling rate, required martensitic structure could be obtained.Therefore steel pipe is constantly broken up in quenching process to quench The steam blanket that surface generates when fiery improves steel tube surface heat transfer boundary condition, improves steel pipe cooling velocity, it is ensured that obtains quenched martensite Tissue.This just proposes high requirement to the sprinkler of quenching unit.
At present, steel pipe quenching technical in the market has the quenching of " outer leaching+interior spray " formula and " leaching quench+interior spray " formula quenching, is suitble to The quenching of the thicker steel pipe of wall thickness, the corresponding quenching unit equipment of both techniques is larger, takes up a large area, cost of investment height, and It is more demanding to heating furnace, it can only be matched with walking beam furnace.For thin-wall steel tube, thrown with both the above quenching unit It is not high to provide return rate.
The content of the invention
The object of the present invention is to provide a kind of annular quenching unit and its application processes, overcome using existing steel pipe quenching dress It is existing when putting production thin-wall steel tube to invest the problem of big return rate is low.
For this purpose, the present invention provides a kind of annular quenching units, including water ring, rack and rollgang, water ring is stood Formula is mounted in rack, and rollgang is placed in ground perpendicular to water ring central axis, and rollgang is located at water ring center Below axis.
The water ring includes feed pipe, and feed pipe is annular steel pipe, and both sides, which are evenly distributed, installs several and ring The branched pipe of shape steel pipe connection, branched pipe vertical connection swing arm, and swing arm one end is driven by power set, other end connection nozzle Several nozzles are installed in manifold, spray nozzle manifold end.
The feed pipe is the loop configuration being integrated by two semicircle steel pipes by flanged joint.
Further include the hood for covering on water ring and preventing quenching water splash everywhere.
The lifting and guiding device of its lifting of driving is installed below the rack.
Rack lower surface perforate simultaneously welds deflector water conservancy diversion quenching water, and sink is equipped with below deflector.
A kind of application process of annular quenching unit, installs multigroup water ring along straight line in rack, is driven in rollgang Dynamic lower steel pipe is advanced through water ring in rotation, completes the quenching of steel pipe;When being quenched to the steel pipe of different tube diameters, water spray Power set driving swing arm in ring rotates by a certain angle around branched pipe center line, and the water that nozzle sprays is made to be sprayed with tangential direction To outer surface of steel tube.
The rollgang is driven by motor, 5 ° of arrangements of rollgang axis and steel pipe centerline dip.
Beneficial effects of the present invention:
(1)This annular quenching unit and its application process provided by the invention, can be with walking beam furnace and Medium frequency induction Heating furnace matches, and is suitble to mating heating furnace form more;
(2)Ensure that the water that nozzle sprays is ejected into tangential direction on outer surface of steel tube, ensure steel pipe cooling velocity, it is ensured that obtain Quenched martensite tissue;
(3)In terms of steel pipe traffic direction, nozzle spray water form one it is hollow, quenching water is made to cannot be introduced into steel pipe inner wall, Prevent quenching water from being flowed back to along steel pipe inner wall in heating furnace;
(4)Reduce spray nozzle device specification, save cost;
(5)Reduce spray nozzle device replacing construction, adjustment nozzle angle is simple and fast, reduces labour, improves production efficiency;
(6)Sectional adjusts quenching water, adapts to the steel pipe quenching technical of different size;
(7)Hood and rack cover equipment, and quenching water is uniformly flowed in sink by weather board below rack, prevent quenching fine grinding It splashes;
(8)Feed pipe is connected using half flange, installation, replacement convenient for nozzle.
The present invention is described in further details below with reference to attached drawing.
Description of the drawings
Fig. 1 is the front view of annular quenching unit.
Fig. 2 is the left view sectional view of annular quenching unit.
Reference sign:1st, water ring;2nd, hood;3rd, rollgang;4th, rack;5th, lifting and guiding device;6th, sink; 7th, nozzle;8th, spray nozzle manifold;9th, swing arm;10th, branched pipe;11st, feed pipe;12nd, power set;13rd, flange;14th, deflector.
Specific embodiment
Embodiment 1:
The present invention provides a kind of annular quenching unit as depicted in figs. 1 and 2, including water ring 1, rack 4 and rollgang 3, Water ring 1 is vertical to be mounted in rack 4, and rollgang 3 is placed in ground, and rollgang 3 perpendicular to 1 central axis of water ring Below 1 central axis of water ring.
The course of work of annular quenching unit is as follows:
Multigroup water ring 1 is installed along straight line in rack 4, steel pipe drives following rotation side to be advanced through spraying water in rollgang 3 Ring 1, the water that water ring 1 sprays are ejected into outer surface of steel tube with tangential direction, ensure steel pipe cooling velocity, it is ensured that obtain quenching horse Family name's body tissue, until quenching is completed.
In terms of steel pipe traffic direction, water ring 1 spray water form one it is hollow, quenching water is made to cannot be introduced into steel pipe Wall prevents quenching water from being flowed back to along steel pipe inner wall in heating furnace.
This annular quenching unit and its application process provided by the invention, can be with walking beam furnace and Medium frequency induction Heating furnace matches, and is suitble to mating heating furnace form more.
Embodiment 2:
On the basis of embodiment 1, as depicted in figs. 1 and 2, the water ring 1 includes feed pipe 11, and feed pipe 11 is annular steel Pipe, both sides, which are evenly distributed, installs several branched pipes 10 connected with annular steel pipe, and 10 vertical connection of branched pipe swing arm 9, swing arm one end is driven by power set 12, and other end connection spray nozzle manifold 8, several nozzles 7 are installed in 8 end of spray nozzle manifold.
It should be noted that since power set 12 are the prior arts, concrete structure not as the present invention protection point, It is not described in detail herein.
Power set 12 in water ring 1 drive swing arm 9 to rotate by a certain angle around 10 center line of branched pipe, spray nozzle 7 The water gone out is ejected into outer surface of steel tube with tangential direction;When annular quenches, it can ensure that ejection current are steady using nozzle injection Fixed, injection pressure is big, by power set swing arm can be driven to make nozzle integral-rotation certain angle, ensure the water that nozzle sprays It is ejected into tangential direction on outer surface of steel tube, the steam blanket that surface generates when breaing up steel pipe quenching improves steel tube surface heat exchange Condition improves steel pipe cooling velocity, it is ensured that obtains quenched martensite tissue.
In terms of steel pipe traffic direction, nozzle spray water form one it is hollow, quenching water is made to cannot be introduced into steel pipe inner wall, Prevent quenching water from being flowed back to along steel pipe inner wall in heating furnace.When replacing steel pipe specification, for the steel pipe of different tube diameters, only need to adjust The adjustment of whole nozzle angles can be realized in whole power set, reduces spray nozzle device specification, saves the time for replacing nozzle specification, The time of adjustment nozzle angle is reduced, cost-effective and labour improves production efficiency.
Embodiment 3:
On the basis of embodiment 1, the lower section of the rack 4 is installed with the lifting and guiding device 5 that it is driven to lift, it is necessary to illustrate , lifting and guiding device 5 is existing structure, preferably, the present embodiment selection oil cylinder or electric pushrod, lifting are oriented to dress 5 driving rack, 4 integral elevating is put, makes water ring, hood and rack integral elevating certain distance, ensures water ring and steel pipe center It is highly consistent.
Annular quenching unit further includes the hood 2 for covering on water ring 1 and preventing quenching water splash everywhere, rack 4 and hood 2 Water ring is covered jointly, prevents quenching water splash everywhere.
The 4 lower surface perforate of rack simultaneously welds 14 water conservancy diversion of deflector quenching water, and 14 lower section of deflector is equipped with sink 6, will Water is quenched to import in sink 6.The feed pipe 11 is the ring junction being connected as one by two semicircle steel pipes by flange 13 Structure in installation and replacement nozzle 7, flange 13 is opened, is conveniently operated.
Embodiment 4:
A kind of application process of annular quenching unit is present embodiments provided, multigroup water ring 1 is installed along straight line in rack 4, Steel pipe is advanced through water ring 1 in rotation under the driving of rollgang 3, completes the quenching of steel pipe;To the steel pipe of different tube diameters When being quenched, the power set 12 in water ring 1 drive swing arm 9 to rotate by a certain angle around 10 center line of branched pipe, make nozzle 7 The water of ejection is ejected into outer surface of steel tube with tangential direction.
As shown in Fig. 2, water ring 1 sets multigroup, every group of independent control, it can be according to the water of each water ring 1 of technique adjustment Amount.
Embodiment 5:
The rollgang 3 is driven by motor, and 5 ° of arrangements of 3 axis of rollgang and steel pipe centerline dip rotate steel pipe side Side forwards transportation prevents steel pipe inhomogeneous cooling, causes tube bending.
Embodiment 6:
The present embodiment is preferably, as shown in Figure 2, annular quenching unit is two sets, in rack 4, to different tube diameters Steel pipe when being quenched, it is necessary to which first motivation of adjustment device 12, makes it that swing arm 9 be driven to rotate certain angle around 10 center line of branched pipe Degree, it is ensured that the water that nozzle 7 sprays is ejected into outer surface of steel tube with tangential direction, then steel pipe is placed on rollgang 3, steel pipe In rollgang 3 following rotation side is driven to be advanced through water ring 1, complete the quenching of steel pipe.The water that water ring 1 sprays forms One hollow, and quenching water is made to cannot be introduced into steel pipe inner wall, prevents quenching water from being flowed back to along steel pipe inner wall in heating furnace;Rack 4 with Hood 2 jointly covers water ring, prevents quenching water splash everywhere.The 4 lower surface perforate of rack is simultaneously welded deflector 14 and is led Flow quenching water, 14 lower section of deflector are equipped with sink 6, quenching water are imported in sink 6.The feed pipe 11 is by two semicircles The loop configuration that steel pipe is connected as one by flange 13 in installation and replacement nozzle 7, flange 13 is opened, is conveniently operated. This annular quenching unit and its application process provided by the invention, can match somebody with somebody with walking beam furnace and Medium Frequency Induction Heating Furnace Set uses, and is suitble to mating heating furnace form more.
In conclusion annular quenching unit can be matched with walking beam furnace and Medium Frequency Induction Heating Furnace, it is suitble to Mating heating furnace form is more.When annular quenches, can ensure to spray waterflow stabilization using nozzle injection, injection pressure is big, By power set swing arm can be driven to make nozzle integral-rotation certain angle, ensure that the water that nozzle sprays is sprayed with tangential direction Onto outer surface of steel tube, the steam blanket of surface generation, improves steel tube surface heat transfer boundary condition when breaing up steel pipe quenching, and it is cold to improve steel pipe But speed, it is ensured that obtain quenched martensite tissue.In terms of steel pipe traffic direction, nozzle spray water form one it is hollow, make Quenching water cannot be introduced into steel pipe inner wall, prevent quenching water from being flowed back to along steel pipe inner wall in heating furnace.It is right when replacing steel pipe specification It in the steel pipe of different tube diameters, only needs motivation of adjustment device that the adjustment of whole nozzle angles can be realized, reduces spray nozzle device specification, The time for replacing nozzle specification is saved, reduces the time of adjustment nozzle angle, cost-effective and labour improves production efficiency. Sectional adjusts quenching water, adapts to the quenching technical of different size steel pipe.Hood and rack cover water ring, prevent from quenching The splashing of water.Feed pipe is connected using half flange, installation, replacement convenient for nozzle.
The foregoing examples are only illustrative of the present invention, does not form the limitation to protection scope of the present invention, all Be with the present invention it is the same or similar design all belong to the scope of protection of the present invention within.The portion that the present embodiment does not describe in detail The well-known components and common structure or conventional means of part and the structure category industry, do not describe one by one here.

Claims (8)

1. a kind of annular quenching unit, it is characterised in that:Including water ring(1), rack(4)And rollgang(3), water ring (1)It is vertical to be mounted on rack(4)On, rollgang(3)Perpendicular to water ring(1)Central axis is placed in ground, and rollgang (3)Positioned at water ring(1)Below central axis.
2. annular quenching unit as described in claim 1, it is characterised in that:The water ring(1)Including feed pipe(11), supply Water pipe(11)For annular steel pipe, both sides, which are evenly distributed, installs several branched pipes connected with annular steel pipe(10), branch Pipe(10)Vertical connection swing arm(9), swing arm one end is by power set(12)Driving, other end connection spray nozzle manifold(8), nozzle Manifold(8)End is installed by several nozzles(7).
3. annular quenching unit as claimed in claim 2, it is characterised in that:The feed pipe(11)It is by two semicircle steel Pipe passes through flange(13)The loop configuration being connected as one.
4. annular quenching unit as described in claim 1, it is characterised in that:It further includes and covers on water ring(1)On prevent from quenching The hood of water splash everywhere(2).
5. annular quenching unit as described in claim 1, it is characterised in that:The rack(4)Lower section be installed with driving its The lifting and guiding device of lifting(5).
6. annular quenching unit as described in claim 1, it is characterised in that:The rack(4)Lower surface perforate and weld lead Flowing plate(14)Water conservancy diversion quenches water, deflector(14)Lower section is equipped with sink(6).
7. a kind of application process of annular quenching unit, it is characterised in that:In rack(4)On along straight line multigroup water ring is installed (1), in rollgang(3)The lower steel pipe of driving is advanced through water ring in rotation(1), complete the quenching of steel pipe;To different pipes When the steel pipe in footpath is quenched, water ring(1)Interior power set(12)Drive swing arm(9)Around branched pipe(10)Center line rotates Certain angle makes nozzle(7)The water of ejection is ejected into outer surface of steel tube with tangential direction.
8. the application process of annular quenching unit as claimed in claim 7, it is characterised in that:The rollgang(3)By electricity Machine drives, rollgang(3)5 ° of arrangements of axis and steel pipe centerline dip.
CN201810098872.4A 2018-01-31 2018-01-31 A kind of annular quenching unit and its application process Pending CN108070701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810098872.4A CN108070701A (en) 2018-01-31 2018-01-31 A kind of annular quenching unit and its application process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810098872.4A CN108070701A (en) 2018-01-31 2018-01-31 A kind of annular quenching unit and its application process

Publications (1)

Publication Number Publication Date
CN108070701A true CN108070701A (en) 2018-05-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109957646A (en) * 2018-07-26 2019-07-02 大圆应用工程公司 The refrigerant injection modular system of metal product for being heat-treated
CN113106229A (en) * 2021-04-16 2021-07-13 东北大学秦皇岛分校 Device for eliminating steam film and using method
CN113245676A (en) * 2021-05-19 2021-08-13 太原科技大学 Liquid nitrogen cryogenic device for arc welding based on magnetic control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109957646A (en) * 2018-07-26 2019-07-02 大圆应用工程公司 The refrigerant injection modular system of metal product for being heat-treated
CN113106229A (en) * 2021-04-16 2021-07-13 东北大学秦皇岛分校 Device for eliminating steam film and using method
CN113106229B (en) * 2021-04-16 2022-04-12 东北大学秦皇岛分校 Device for eliminating steam film and using method
CN113245676A (en) * 2021-05-19 2021-08-13 太原科技大学 Liquid nitrogen cryogenic device for arc welding based on magnetic control

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