CN107287392B - A kind of drill rod thread quenching unit - Google Patents
A kind of drill rod thread quenching unit Download PDFInfo
- Publication number
- CN107287392B CN107287392B CN201710599137.7A CN201710599137A CN107287392B CN 107287392 B CN107287392 B CN 107287392B CN 201710599137 A CN201710599137 A CN 201710599137A CN 107287392 B CN107287392 B CN 107287392B
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- CN
- China
- Prior art keywords
- pipe
- drill rod
- sparger
- rod thread
- internal sparger
- 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.)
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
- C21D1/667—Quenching devices for spray 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
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
-
- 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
- Y02P10/25—Process efficiency
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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 Articles (AREA)
Abstract
Include the high-frequency induction hardening circle set gradually along operation front-rear direction and outer ring sparger the invention discloses a kind of drill rod thread quenching unit, the high-frequency induction hardening circle size and outer spray ring size are more than drill rod thread section size to be quenched；Internal sparger pipe is additionally provided in the high-frequency induction hardening circle and outer ring sparger, the internal sparger pipe outer end is equipped with interior spray apertures, and the internal sparger pipe outer end is arranged in front of high-frequency induction hardening circle；The internal sparger pipe size is less than drill rod thread section size to be quenched.By using drill rod thread quenching unit described herein, interior spray apertures are increased in the preceding road of the operation of high-frequency induction hardening circle, so the hardness of workpiece surface can arbitrarily be adjusted between 40 52 °, rigidity layer also can arbitrarily be adjusted between 0.1 to 0.5, deformation phenomenon is also eliminated simultaneously, the quality of workpiece is made to have obtained effective guarantee.
Description
Technical field
The present invention relates to a kind of drill rod thread quenching units.
Background technology
Geologic drilling rod thread surface quenches, and the case hardness of screw thread facing can be improved, it is not easy to generate snap fastener phenomenon, improve
The service life of drilling rod.Can existing high-frequency quenching equipment, it is cooling to use outer cooling water cooling, due to the wetting-out rate of high frequency
Quickly, the heat output of outer cooling water is inadequate, therefore there is rigidity layers to be not easily controlled, and is easy depth of quenching.Make the quality of workpiece not
It is easy to control, reduces the service life of workpiece.The prior art, which is badly in need of one kind, can lower quenching hardness layer thickness, improve workpiece
Quality drill rod thread quenching unit.
Invention content
It is an object of the invention to overcome defect existing in the prior art, quenching hardness thickness can be lowered by providing one kind
Degree, improves the drill rod thread quenching unit of the quality of workpiece.
To achieve the above object, the technical solution of the present invention is to provide a kind of drill rod thread quenching units, including along work
The high-frequency induction hardening circle and outer ring sparger that industry front-rear direction is set gradually, the high-frequency induction hardening circle size and outer ring sparger
Size is more than drill rod thread section size to be quenched；It is additionally provided with internal sparger pipe in the high-frequency induction hardening circle and outer ring sparger, institute
It states internal sparger pipe outer end and is equipped with interior spray apertures, the internal sparger pipe outer end is arranged in front of high-frequency induction hardening circle；It is described
Internal sparger pipe size is less than drill rod thread section size to be quenched.
By using drill rod thread quenching unit described herein, increased in the preceding road of the operation of high-frequency induction hardening circle
Interior spray apertures, before high frequency works not yet, interior spray apertures begin to cooling drill pipe bore, in high-frequency work, outer spray dress
The quenching for mainly acting on thread outer surface is set, the cooling medium that interior spray apertures spray takes away extra heat, such high frequency
Being impregnated with for heat is just restricted, and the rigidity layer of thread surface can be controlled well, and so workpiece surface is hard
Degree can arbitrarily be adjusted between 40-52 °, and rigidity layer also can arbitrarily be adjusted between 0.1 to 0.5, while it is existing to also eliminate deformation
As making the quality of workpiece obtain effective guarantee.
Preferably, the outer ring sparger inner wall even distribution has outer spray apertures, the outer spray apertures to be distributed in outer ring sparger
Inner wall.Such design is conducive to cooling medium uniform spraying.
Preferably, the interior spray apertures are axially distributed around internal sparger pipe, and densely distributed degree is from internal sparger pipe
End to lower end gradually reduces.Such design increases internal sparger pipe in the case where drilling rod to be quenched does not increase axial rotation
The interior spray hole number of upper end reduces the interior spray hole number of internal sparger pipe lower end, due to spraying in drill rod thread section to be quenched
The cooling medium of upper end inner wall can flow to drill rod thread section inner wall lower end to be quenched along inner wall, and drill rod thread section to be quenched
There are dual coolings for inner wall lower end（The cooling medium that the interior spray apertures of internal sparger pipe lower end itself spray, and to be quenched
Drill rod thread section upper end inner wall flows to the cooling medium of drill rod thread section inner wall lower end to be quenched along inner wall）In order to make up this
One difference redistributes interior spray apertures, reduces the interior spray hole number of internal sparger pipe lower end so that drilling rod spiral shell to be quenched
Line section is as cooling uniform as possible, improves quenching effect.
Preferably, sparge pipe is radially slidably connected in the interior spray apertures, the sparge pipe inner end and interior spray
Shower pipe unicom, internal sparger pipe outer end is stretched out in the sparge pipe outer end, and sparge pipe outer end is equipped with snap ring；The internal sparger pipe outer end
Portion is also socketed with latex compression ring, is offered on the latex compression ring and accommodates the through-hole that sparge pipe passes through, the snap ring inner edge and breast
The cooperation contact of glue compression ring outer surface.Design in this way can adjust sparge pipe outer end and spray coolant liquid and quenching drilling rod spiral shell
The distance of line section inner wall adapts to the demand of the quenching drilling rod of different-diameter.By that can make latex gas to the inflation of latex compression ring
Ring expands, and is pushed outwardly sparge pipe by the cooperation of latex compression ring outer surface and snap ring, by coolant liquid ejiction opening close to quenching
Drill rod thread section inner wall, anyway, latex compression ring is lost heart, by coolant liquid ejiction opening far from quenching drill rod thread section inner wall.
Preferably, by tightening gauze connection, the tightening gauze between multiple sparge pipes in the internal sparger pipe
Including tightening center and along tightening tightening line of the center to external radiation, the tightening line outer end is connect with sparge pipe inner end.In this way
Design can constrain sparge pipe to contract, especially when latex compression ring loses heart, avoid latex compression ring and water spray pipe friction
Power is insufficient and can not withdraw sparge pipe, and tightening line uses latex elastic thread.
The advantages of the present invention are：By using drill rod thread quenching unit described herein, in height
The preceding road of operation of frequency impewdance matching circle increases interior spray apertures, and before high frequency works not yet, interior spray apertures begin to cooling brill
Bar endoporus, in high-frequency work, outer spray equipment mainly acts on the quenching of thread outer surface, cooling Jie that interior spray apertures spray
Matter takes away extra heat, and such being impregnated with for high frequency heat is just restricted, and the rigidity layer of thread surface good can obtain
To control, in this way since the hardness of workpiece surface can arbitrarily be adjusted between 40-52 °, rigidity layer also can be between 0.1 to 0.5
It arbitrarily adjusts, while also eliminating deformation phenomenon, the quality of workpiece is made to have obtained effective guarantee.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is interior spray apertures distributed architecture schematic diagram in the embodiment of the present invention 2；
Fig. 3 is sparge pipe and internal sparger pipe fit structure schematic diagram in the embodiment of the present invention 3；
Fig. 4 is structure amplification and its decomposition diagram at A in Fig. 3.
In figure：1, high-frequency induction hardening circle；2, outer ring sparger；3, internal sparger pipe；4, interior spray apertures；5, drilling rod spiral shell to be quenched
Line section；6, outer spray apertures；7, sparge pipe；8, snap ring；9, latex compression ring；10, through-hole；11, gauze is tightened；12, line is tightened；13、
Tightening center.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is further described.Following embodiment is only
For clearly illustrating technical scheme of the present invention, and not intended to limit the protection scope of the present invention.
As shown in Figures 1 to 4, a kind of drill rod thread quenching unit includes the high frequency set gradually along operation front-rear direction
Impewdance matching circle 1 and outer ring sparger 2,1 size of high-frequency induction hardening circle and 2 size of outer ring sparger are more than drilling rod spiral shell to be quenched
5 size of line section；Internal sparger pipe 3,3 outer end of the internal sparger pipe are additionally provided in the high-frequency induction hardening circle 1 and outer ring sparger 2
Equipped with interior spray apertures 4, the setting of 3 outer end of the internal sparger pipe is in 1 front of high-frequency induction hardening circle；3 size of the internal sparger pipe
Less than 5 size of drill rod thread section to be quenched.
The drill rod thread quenching unit further includes rotary drive mechanism and feed mechanism.
2 inner wall even distribution of outer ring sparger has outer spray apertures 6, the outer spray apertures 6 to be distributed in 2 inner wall of outer ring sparger.
The interior spray apertures 4 are around the axial distribution of internal sparger pipe 3, and densely distributed degree is from 3 upper end of internal sparger pipe to lower end
It gradually reduces.
Sparge pipe 7,7 inner end of the sparge pipe and internal sparger pipe 3 are radially slidably connected in the interior spray apertures 4
Logical, 3 outer end of internal sparger pipe is stretched out in 7 outer end of the sparge pipe, and 7 outer end of sparge pipe is equipped with snap ring 8；3 outer end of the internal sparger pipe
Portion is also socketed with latex compression ring 9, is offered on the latex compression ring 9 and accommodates the through-hole 10 that sparge pipe 7 passes through, in the snap ring 8
Edge is contacted with the cooperation of 9 outer surface of latex compression ring.
By tightening the connection of 12 net 11 of line, 12 net 11 of the tightening line packet between multiple sparge pipes 7 in the internal sparger pipe 3
Tightening center 13 and the tightening line 12 along tightening center 13 to external radiation are included, 12 outer end of tightening line connects with 7 inner end of sparge pipe
It connects.
Embodiment 1
A kind of drill rod thread quenching unit includes the high-frequency induction hardening circle 1 set gradually along operation front-rear direction and outer
Ring sparger 2,1 size of high-frequency induction hardening circle and 2 size of outer ring sparger are more than 5 size of drill rod thread section to be quenched；It is described
Internal sparger pipe 3 is additionally provided in high-frequency induction hardening circle 1 and outer ring sparger 2,3 outer end of the internal sparger pipe is equipped with interior spray apertures 4
（3 outer end of internal sparger pipe is cecum, and interior spray apertures 4 are opened on side wall）, 3 outer end of the internal sparger pipe is arranged in high-frequency induction
1 front of quenching circle；3 size of the internal sparger pipe is less than 5 size of drill rod thread section to be quenched.2 inner wall even distribution of outer ring sparger
There are outer spray apertures 6, the outer spray apertures 6 to be distributed in 2 inner wall of outer ring sparger.
In quenching, drill rod thread section 5 to be quenched is promoted from front to back along operating direction, first in spray apertures 4 into
Enter in drill rod thread section 5 to be quenched, and by coolant liquid（Water cooling）Spray carries out inner wall in 5 inner wall of drill rod thread section to be quenched
It is preliminary cooling, it then quickly enters in high-frequency induction hardening circle 1 with 1 impewdance matching of high-frequency induction hardening circle, enters outer spray later
Ring 2 is drenched, is cooled down rapidly under the spray of outer ring sparger 2, quenching is completed.
Designing in this way is advantageous in that;Before high frequency works not yet, interior spray apertures 4 begin to cooling drill pipe bore,
When high-frequency work, outer spray equipment mainly acts on the quenching of thread outer surface, and the cooling medium that interior spray apertures 4 spray is extra
Heat take away, such being impregnated with for high frequency heat is just restricted, and the rigidity layer of thread surface can be controlled well, this
The hardness that sample one carrys out workpiece surface can arbitrarily be adjusted between 40-52 °, and rigidity layer also can arbitrarily be adjusted between 0.1 to 0.5,
Deformation phenomenon is also eliminated simultaneously, the quality of workpiece is made to have obtained effective guarantee.
Embodiment 2
The interior spray apertures 4 are around the axial distribution of internal sparger pipe 3, and densely distributed degree is from 3 upper end of internal sparger pipe to lower end
It gradually reduces.Such design increases by 3 upper end of internal sparger pipe in the case where drilling rod to be quenched does not increase axial rotation
4 quantity of interior spray apertures reduces by 4 quantity of interior spray apertures of 3 lower end of internal sparger pipe, due to spraying in drill rod thread section 5 to be quenched
The cooling medium of end inner wall can flow to 5 inner wall lower end of drill rod thread section to be quenched along inner wall, and drill rod thread section 5 to be quenched
There are dual coolings for inner wall lower end（The cooling medium that the interior spray apertures 4 of 3 lower end of internal sparger pipe itself spray, and from waiting quenching
5 upper end inner wall of jet pierer bar thread segment flows to the cooling medium of 5 inner wall lower end of drill rod thread section to be quenched along inner wall）In order to more
This difference is mended, interior spray apertures 4 are redistributed, reduces by 4 quantity of interior spray apertures of 3 lower end of internal sparger pipe so that wait quenching
Jet pierer bar thread segment 5 is as cooling uniform as possible, improves quenching effect.
Embodiment 3
As a kind of optimization to embodiment 1 or embodiment 2, water spray is radially slidably connected in the interior spray apertures 4
3 outer end of internal sparger pipe, and sparge pipe 7 are stretched out in pipe 7,7 inner end of the sparge pipe and 3 unicom of internal sparger pipe, 7 outer end of the sparge pipe
Outer end is equipped with snap ring 8；3 outer end of the internal sparger pipe is also socketed with latex compression ring 9, and receiving is offered on the latex compression ring 9
The through-hole 10 that sparge pipe 7 passes through, 8 inner edge of the snap ring are contacted with the cooperation of 9 outer surface of latex compression ring.Latex compression ring 9 and inflation/deflation
Equipment connects.The sparge pipe 7 is 0.1mm or less with 4 fit clearance of interior spray apertures.
By tightening the connection of 12 net 11 of line, 12 net 11 of the tightening line packet between multiple sparge pipes 7 in the internal sparger pipe 3
Tightening center 13 and the tightening line 12 along tightening center 13 to external radiation are included, 12 outer end of tightening line connects with 7 inner end of sparge pipe
It connects.
The sparge pipe 7 and internal sparger pipe 3 select polytetrafluoroethylene (PTFE) material.
Hydraulic pressure in internal sparger pipe 3 ensure that the pressure of spray, changes or needs in the bar diameter of drilling rod to be quenched
When adjusting the position of 7 outer end water outlet of sparge pipe, latex compression ring 9 can be made to expand to the inflation of latex compression ring 9, by latex gas
Sparge pipe 7 is pushed outwardly by the cooperation of 9 outer surface of ring and snap ring 8, by coolant liquid ejiction opening close to quenching drill rod thread section inner wall,
Anyway, latex compression ring 9 is lost heart, by coolant liquid ejiction opening far from quenching drill rod thread section inner wall.Latex compression ring 9 is a closing
Air bag, due to also limiting position of the latex compression ring 9 on internal sparger pipe 3 equipped with through-hole 10, sparge pipe 7 is along interior spray
Hole 4 is slided, but has enough length, will not skid off interior spray apertures 4, and is always maintained at and is joined with 3 unicom inner cavity of internal sparger pipe
It is logical.
It tightens 12 net 11 of line and constrains sparge pipe 7 to contract, especially when latex compression ring 9 loses heart, avoid latex compression ring 9
Insufficient with sparge pipe 7 frictional force and can not withdraw sparge pipe 7, tightening line 12 uses latex elastic thread.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the protection domain of invention.
Claims (2)
1. a kind of drill rod thread quenching unit, it is characterised in that：Include quenching along the high-frequency induction that operation front-rear direction is set gradually
Pyrosphere and outer ring sparger, the high-frequency induction hardening circle size and outer spray ring size are more than drill rod thread section size to be quenched；
Internal sparger pipe is additionally provided in the high-frequency induction hardening circle and outer ring sparger, the internal sparger pipe outer end is equipped with interior spray apertures,
The internal sparger pipe outer end is arranged in front of high-frequency induction hardening circle；The internal sparger pipe size is less than drill rod thread to be quenched
Section size；
The outer ring sparger inner wall even distribution has outer spray apertures, the outer spray apertures to be distributed in outer ring sparger inner wall；
The interior spray apertures are axially distributed around internal sparger pipe, and densely distributed degree is gradually dropped from internal sparger pipe upper end to lower end
It is low；
Sparge pipe, the sparge pipe inner end and internal sparger pipe unicom, the spray are radially slidably connected in the interior spray apertures
Internal sparger pipe outer end is stretched out in water pipe outer end, and sparge pipe outer end is equipped with snap ring；The internal sparger pipe outer end is also socketed with latex
Compression ring offers on the latex compression ring and accommodates the through-hole that sparge pipe passes through, and the snap ring inner edge is matched with latex compression ring outer surface
Splice grafting touches.
2. drill rod thread quenching unit as described in claim 1, it is characterised in that：In the internal sparger pipe multiple sparge pipes it
Between by tightening gauze connection, the tightening gauze includes tightening center and the tightening line along tightening center to external radiation, described
Tightening line outer end is connect with sparge pipe inner end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599137.7A CN107287392B (en) | 2017-07-21 | 2017-07-21 | A kind of drill rod thread quenching unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599137.7A CN107287392B (en) | 2017-07-21 | 2017-07-21 | A kind of drill rod thread quenching unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107287392A CN107287392A (en) | 2017-10-24 |
| CN107287392B true CN107287392B (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710599137.7A Active CN107287392B (en) | 2017-07-21 | 2017-07-21 | A kind of drill rod thread quenching unit |
Country Status (1)
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| CN (1) | CN107287392B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111485081B (en) * | 2020-05-26 | 2022-03-22 | 苏州辽鞍机械有限公司 | Quenching heat treatment method for pin bush |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555541A (en) * | 2009-03-30 | 2009-10-14 | 北京机电研究所 | Quenching water spray ring and quenching equipment of parts of slender rod type |
| CN203247291U (en) * | 2013-05-02 | 2013-10-23 | 龙工（江西）机械有限公司 | Heat treatment device for tubular workpieces |
| CN105316464A (en) * | 2014-06-05 | 2016-02-10 | 东风（十堰）发动机部件有限公司 | Long and thin-walled tube induction hardening deformation control device |
| CN104313274B (en) * | 2014-11-12 | 2016-04-20 | 中南大学 | A kind of aluminium alloy annular element spray quench equipment and using method thereof |
| CN106811589A (en) * | 2015-11-30 | 2017-06-09 | 赵敏 | A kind of steel pipe process for quenching |
| CN206015013U (en) * | 2016-08-30 | 2017-03-15 | 江苏曙光石油钻采设备有限公司 | Annular tube type water jet for drilling rod quenching |
| CN206970649U (en) * | 2017-07-21 | 2018-02-06 | 无锡锡钻地质装备有限公司 | A kind of drill rod thread quenching unit |
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- 2017-07-21 CN CN201710599137.7A patent/CN107287392B/en active Active
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