CN202808875U - Numerical-control machine tool capable of quenching and tempering simultaneously at high frequency - Google Patents
Numerical-control machine tool capable of quenching and tempering simultaneously at high frequency Download PDFInfo
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- CN202808875U CN202808875U CN2012202786119U CN201220278611U CN202808875U CN 202808875 U CN202808875 U CN 202808875U CN 2012202786119 U CN2012202786119 U CN 2012202786119U CN 201220278611 U CN201220278611 U CN 201220278611U CN 202808875 U CN202808875 U CN 202808875U
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Abstract
The utility model provides a numerical-control machine tool capable of quenching and tempering simultaneously at high frequency, belongs to the technical field of surface local inductive heat treatment of metal part, and mainly aims at achieving the purposes that a workpiece can be quenched and tempered simultaneously in once clamping, multi-stage power variability and speed variability can be realized on a complex part, and batch quenching treatment of multiple varieties and small parts can be fulfilled by programming. The numerical machine tool mainly comprises B-like two-loop two-position quenching induction coil and tempering induction coil installed on a vertically moving Z-axial sliding table of the numerical-control machine tool, and an eight-station rotary workpiece clamping plate graduated rotation mechanism. Therefore, eight workpieces can be clamped in one time and subjected to heat treatment, two processes can be automatically completed on one machine tool, the process of loading and unloading workpieces repeatedly can be reduced, the labor intensity can be reduced, continuous quenching and tempering heat treatment production of workpieces in batches can be realized, and the production efficiency can be improved.
Description
Technical field
The utility model belongs to metal parts surface local induction heat treatment technical field, and what relate generally to is a kind of simultaneously high-frequency quenching tempering numerically-controlled machine.
Background technology
Development along with China automobile industry, some manufacture process requirement of axial workpiece that affect overall performance are more and more higher, especially higher to the ask for something wear resistance accurate axial workpiece, the quality of its laser quenching hardened layer is on the mechanical property of part and important impact is more arranged work-ing life; The strict control zone of transition of the part that has gradient mustn't have quench-hardened case, guarantees the matrix state.In order to ensure quenching quality and the raising quenching efficiency of this class part, urgently wish a kind of compact construction, flexible movements, perfect in shape and function, the professional quenching machine of reliable in quality.And present high-frequency quenching machine, great majority can only carry out single high-frequency induction selective hardening thermal treatment to workpiece, workpiece after the quenching operation of need making separate arrangements is carried out tempering heat treatment, although the external import high-frequency quenching machine of minority has high-frequency quenching tempering function, but can only be to simple axle surface, utilize the annulus induction coil to carry out the high-frequency quenching tempering heat treatment, for having complicated axle surface, particularly for having accurate narrow groove, need simultaneously segmentation continuous high frequency Q-tempering, then helpless, can only operation break-down or the annulus induction coil of frequent different size opening carry out respectively the high-frequency quenching tempering.These proceed step by step are the Q-tempering heat-treating methods respectively, and efficient is low, and labour intensity is large, and quality should not be controlled.In addition, because the diameter of axle is different, use the induction coil of different pore size, the different induction coil that frequently changes the outfit, time-consuming taking a lot of work.
Summary of the invention
The purpose of this utility model is: a kind of simultaneously numerically-controlled machine of high-frequency quenching tempering is provided, satisfying some, to have a larger diameter poor, and the surface induction thermal treatment need of work with the complicated axis body workpiece of the narrow groove of annular, overcome existing general-purpose vertical quenching machine, the unit single-piece, to the different diameters of axle of complicated axis body workpiece position, different surfaces quenching requirement, proceed step by step is quenching heat treatment respectively, and to repeatedly change the heat induced circle of different openings size to the diameter of axle of different diameter, efficient is low, and labour intensity is large, the defective that quality should not be controlled.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be:
A kind of simultaneously high-frequency quenching tempering numerically-controlled machine, comprise circuit part and mechanical part, described circuit part comprises: digital control system control module, Q-tempering system control module, Machine-Tool Control terminals, quenching induction coil control terminals, tempering induction coil control terminals, bundle conductor; Described mechanical part comprises: machine tool main body, extension cabinet, numerical control operating platform and eight station rotary work piece clamping apparatus disk divided rotating mechanisms; Described extension cabinet is three-decker, and the upper strata is built-in with quenching high frequency electric source and tempering high frequency electric source, the built-in hardening liquid recycle pump in middle level and cooling water circulating pump, the built-in hardening liquid case of lower floor and cooling water tank; Configuration three-axis numerical control system and screen display in the described numerical control operating platform; It is characterized in that: the radio-frequency generator fixed rack is being connected on the Z axis slide unit of numerically-controlled machine vertical movement, two circle dibit quenching induction coils be installed in the radio-frequency generator fixed rack on quenching radio-frequency generator and the hardening liquid recycle pump of a side be connected by quenching induction coil hydraulic quick coupler, described radio-frequency generator fixed rack is positioned at the vertical movement mechanism two bottom sides, and vertical movement mechanism is positioned at the back upper place of horizontal table; Two circle dibit tempering induction coils be installed in the radio-frequency generator fixed rack on tempering radio-frequency generator and the cooling water circulating pump of opposite side be connected by tempering induction coil hydraulic quick coupler;
Described pair of circle dibit quenching induction coil is platy structure, be provided with hardening liquid runner and the quenching induction coil water coolant runner of square-section in the plate, tabular induction coil middle part is provided with the actual induction heating work district in class " 8 " word hole, place, the middle part of the side, class " 8 " word hole is open-minded, respectively there is the induction heating workspace of a different pore size on both sides, the middle part of the side, rib inwardly is shrunk to circle inclined-plane in the quenching induction coil in class " 8 " the word wide aperture quenching induction zone lower edge, uniform a plurality of quenching induction coils inclined-plane spray hole on this inclined-plane, class " 8 " word small-bore quenching induction zone is provided with circle inclination spray hole in the quenching induction coil, the hardening liquid runner of actual induction heating zone, class " 8 " word hole is connected, and the water coolant runner in the quenching induction coil on the outer circle of circle and quenching induction coil is connected by quenching induction coil bypass branch; Described pair of circle dibit quenching induction coil is radially two circle stacks, and turn-to-turn is provided with quenching induction coil isolator;
Described pair of circle dibit tempering induction coil is platy structure, be provided with the tempering induction coil cooling water channel of square-section in the plate, tabular induction coil middle part is provided with actual induction heating zone, class " 8 " word hole, place, the middle part of the side, class " 8 " word hole is open-minded, both sides, the middle part of the side are respectively class " 8 " word smaller aperture due tempering workspace and class " 8 " word larger aperture tempering workspace, the water coolant runner of class " 8 " word hole tempering actual induction heating zone is connected, and the water coolant runner in the tempering induction coil on the outer circle of circle and tempering induction coil is connected by tempering induction coil bypass branch; Be provided with tempering induction coil isolator between the inside and outside circle of tempering induction coil;
Described eight station rotary work piece clamping apparatus disk divided rotating mechanisms comprise the bearing spider system that is installed on the horizontal table, Q-tempering working position Workpiece Rotating mechanism and rotary disk, wherein: circumference uniform distribution is equipped with eight workpiece positioning rotating shafts of high-accuracy rolling bearing on the rotary disk, every workpiece positioning rotating shaft stretches out the rotary disk lower part rotating shaft serration rubber wheel is housed, every workpiece positioning rotating shaft stretches out the rotary disk upper section many lobes internal expansion type chuck or claw-type clamp is housed, wherein: the active serration rubber wheel engagement on every workpiece positioning rotating shaft serration rubber wheel and the dc speed-regulating motor output shaft; Described dc speed-regulating motor is installed on the electric machine support on the horizontal table that is positioned at rotary disk below; Waterproof bulkhead is installed under rotary disk, is lined with rubber pad between rotary disk and the waterproof bulkhead; Cog belt transmission system, bearing spider system and Q-tempering working position Workpiece Rotating mechanism are positioned under the waterproof bulkhead, and the intercepting basin cover is along waterproof bulkhead periphery around a circle, have hydrops at waterproof bulkhead one jiao and reclaim the duct, and this duct is communicated with intercepting basin.
The utility model compared with prior art has following beneficial effect:
1, the utility model adopts intelligent control module, can realize that on complicated shape multistage becomes the merit speed change, can satisfy the batch quench treatment of many kinds, finding by programming;
2, class " 8 " the word hole dibit heat induced circle technology of the utility model employing, choose reasonable and the control of the output frequency by automatically regulating high frequency induction power supply at the cross-section variation place that the ditch groove step is arranged, the heating power of inductor block, inductor block translational speed, the specific position heating residence time and spray parameter, to there being the ditch groove step to carry out segmentation continuous sweep induction heat treatment, depth of hardening zone and the Hardness Design requirement of channel bottom, ladder diameter of axle section and their boundary transit sites have been guaranteed;
3, in the utility model, large power supply is used for quenching, then use the lower-wattage tempering, two operations are finished on a machine tool automatically, reduced the operation that repeats lifting workpiece, reduce labour intensity, can realize that the continuous quenching tempering heat treatment of workpiece is produced in batch, improved production efficiency.
Description of drawings
Fig. 1 is the utility model structural front view;
Fig. 2 is the utility model structure side view;
Fig. 3 is the utility model vertical view;
Fig. 4 is the two circle dibit quenching induction coils of the utility model;
Fig. 5 is the two circle dibit quenching induction coil A-A face sectional views of the utility model;
Fig. 6 is of the present utility model pair of circle dibit tempering induction coil;
Fig. 7 is of the present utility model pair of circle dibit tempering induction coil B-B face sectional view.
Among the figure: the 1-machine tool main body; The 2-horizontal table; The 3-AC servo motor; 4-cog belt transmission system; 5-intercepting basin cover; The 6-waterproof bulkhead; The 7-rubber pad; 8-eight station rotary work piece clamping apparatus disk divided rotating mechanisms; 9-radio-frequency generator fixed rack; 10-tempering radio-frequency generator; The two circle dibit tempering induction coils of 11-; The 12-vertical movement mechanism; 13-Z axle slide unit; 14-quenching radio-frequency generator; 15-two circle dibit quenching induction coils; 16-workpiece positioning rotating shaft; 17-rotary disk; 18-steel ball device for pre-positioning; 19-bearing spider system; 20-Q-tempering working position Workpiece Rotating mechanism; 23-initiatively serration rubber wheels; 24-rotating shaft serration rubber wheel; 25-dc speed-regulating motor; 26-electric machine support; 28-ponding reclaims the duct; 29-tempering induction coil hydraulic quick coupler; 30-tempering station; 31-quench station; 32-quenching induction coil hydraulic quick coupler; 33-quenching induction coil cooling water inlet; 34-quenching induction coil cooling water outlet; 35-hardening liquid inlet tube; 36-quenching induction coil bypass branch; 37-class " 8 " word wide aperture quenching induction zone; 38-class " 8 " word small-bore quenching induction zone; The outer circle of 39-quenching induction coil; Circle in 40-quenching induction coil; 41-quenching induction coil isolator; 42-hardening liquid runner; 43-quenching induction coil water coolant runner; 44-quenching induction coil inclined-plane spout hole; Circle inclined-plane in 45-quenching induction coil; Circle inclination spray hole in 46-quenching induction coil; 47-tempering induction coil cooling water inlet; 48-tempering induction coil cooling water outlet; 49-tempering induction coil bypass branch; Circle in 50-tempering induction coil; The outer circle of 51-tempering induction coil; 52-class " 8 " word smaller aperture due tempering workspace; 53-class " 8 " word larger aperture tempering workspace; 54-tempering induction coil isolator; 55-tempering induction coil cooling water channel.
Embodiment
As depicted in figs. 1 and 2, a kind of simultaneously high-frequency quenching tempering numerically-controlled machine, comprise circuit part and mechanical part, described circuit part comprises: digital control system control module, Q-tempering system control module, Machine-Tool Control terminals, quenching induction coil control terminals, tempering induction coil control terminals, bundle conductor; Described mechanical part comprises: machine tool main body 1, extension cabinet, numerical control operating platform and eight station rotary work piece clamping apparatus disk divided rotating mechanisms 8; Described extension cabinet is three-decker, and the upper strata is built-in with quenching high frequency electric source and tempering high frequency electric source, the built-in hardening liquid recycle pump in middle level and cooling water circulating pump, the built-in hardening liquid case of lower floor and cooling water tank; Configuration three-axis numerical control system and screen display in the described numerical control operating platform; Radio-frequency generator fixed rack 9 is being connected on the Z axis slide unit 13 of numerically-controlled machine vertical movement, as shown in Figure 3, two circle dibit quenching induction coils 15 be installed in radio-frequency generator fixed rack 9 on quenching radio-frequency generator 14 and the hardening liquid recycle pump of a side be connected by quenching induction coil hydraulic quick coupler 32, described radio-frequency generator fixed rack 9 is positioned at vertical movement mechanism 12 two bottom sides, and vertical movement mechanism 12 is positioned at the back upper place of horizontal table 2; Two circle dibit tempering induction coils 11 be installed in radio-frequency generator fixed rack 9 on tempering radio-frequency generator 10 and the cooling water circulating pump of opposite side be connected by tempering induction coil hydraulic quick coupler 29;
As shown in Figure 4 and Figure 5, described pair of circle dibit quenching induction coil 15 is platy structure, be provided with hardening liquid runner 42 and the quenching induction coil water coolant runner 43 of square-section in the plate, tabular induction coil middle part is provided with the actual induction heating work district in class " 8 " word hole, place, the middle part of the side, class " 8 " word hole is open-minded, respectively there is the induction heating workspace of a different pore size on both sides, the middle part of the side, rib inwardly is shrunk to circle inclined-plane 45 in the quenching induction coil in class " 8 " word wide aperture quenching induction zone 37 lower edges, uniform a plurality of quenching induction coils inclined-plane spray hole 44 on this inclined-plane, class " 8 " word small-bore quenching induction zone 38 is provided with circle inclination spray hole 46 in the quenching induction coil, the hardening liquid runner of actual induction heating zone, class " 8 " word hole is connected, and the water coolant runner in the quenching induction coil on the outer circle 39 of circle 40 and quenching induction coil is connected by quenching induction coil bypass branch 36; Described pair of circle dibit quenching induction coil 15 is radially two circle stacks, and turn-to-turn is provided with quenching induction coil isolator 41;
As shown in Figure 6 and Figure 7, described pair of circle dibit tempering induction coil 11 is platy structure, be provided with the tempering induction coil cooling water channel 55 of square-section in the plate, tabular induction coil middle part is provided with actual induction heating zone, class " 8 " word hole, place, the middle part of the side, class " 8 " word hole is open-minded, both sides, the middle part of the side are respectively class " 8 " word smaller aperture due tempering workspace 52 and class " 8 " word larger aperture tempering workspace 53, the water coolant runner of class " 8 " word hole tempering actual induction heating zone is connected, and the water coolant runner in the tempering induction coil on the outer circle 51 of circle 50 and tempering induction coil is connected by tempering induction coil bypass branch 49; Be provided with tempering induction coil isolator 54 between the inside and outside circle of tempering induction coil;
Such as Fig. 1, Fig. 2 and shown in Figure 3, described eight station rotary work piece clamping apparatus disk divided rotating mechanisms 8 comprise the bearing spider system 19 that is installed on the horizontal table 2, Q-tempering working position Workpiece Rotating mechanism 20 and rotary disk 17, wherein: circumference uniform distribution is equipped with eight workpiece positioning rotating shafts 16 of high-accuracy rolling bearing on the rotary disk 17, every workpiece positioning rotating shaft 16 stretches out rotary disk 17 lower parts rotating shaft serration rubber wheel 24 is housed, every workpiece positioning rotating shaft 16 stretches out rotary disk 17 upper sections many lobes internal expansion type chuck or claw-type clamp is housed, wherein: active serration rubber wheel 23 engagements on every workpiece positioning rotating shaft serration rubber wheel 24 and dc speed-regulating motor 25 output shafts; Described dc speed-regulating motor 25 is installed on the electric machine support 26 on the horizontal table that is positioned at rotary disk 17 belows; Waterproof bulkhead 6 is installed under rotary disk 17, is lined with rubber pad 7 between rotary disk 17 and the waterproof bulkhead 6; Cog belt transmission system 4, bearing spider system 19 and Q-tempering working position Workpiece Rotating mechanism 20 are positioned under the waterproof bulkhead 6, intercepting basin cover 5 is along waterproof bulkhead 6 peripheries around a circle, one jiao at waterproof bulkhead 6 has hydrops recovery duct 28, and this duct 28 is communicated with intercepting basin.
Using method and principle of work:
A kind of simultaneously work of numerical control machine process of high-frequency quenching tempering of the utility model is: by hand workpiece is inserted on the workpiece positioning rotating shaft 16 one by one, operating system is sent instruction, rotary disk 17 rotates 45 °, steel ball device for pre-positioning 18 makes workpiece accurately arrive quench station 31, at this moment, dc speed-regulating motor 25 rotations make the workpiece that is contained on the workpiece positioning rotating shaft 16 that enters quench station 31 begin rotation, AC servo motor 3 is started working, two circle dibit quenching induction coil 15 is first by moving down fast above the workpiece, arrive the target location, according to progressively upwards operation of segmentation of NC instruction, heating, time-delay, hardening liquid enters the hardening liquid runner by hardening liquid inlet tube 35, circle inclined-plane 45 is to workpiece spray hardening liquid in the quenching induction coil, hardening liquid flows in the intercepting basin, draws back the hydrops case by the hardening liquid recycle pump and again sends into after filtering among the quenching runner of quenching induction coil.
Water coolant is by quenching induction coil cooling water inlet 33 circle 39 outside the quenching induction coil, circle 40 in the quenching induction coil, finally flowed out by quenching induction coil cooling water outlet 34, and draw back cooling water tank by cooling water circulating pump, again send into after filtering in the water coolant runner; Next the rotary disk transposition makes it to enter tempering station 30, at this moment, dc speed-regulating motor 25 rotations make the workpiece that is contained on the workpiece positioning rotating shaft 16 that enters tempering station 30 begin rotation, switch by instruction, two circle dibit tempering induction coils 11 upwards move with two circle dibit quenching induction coil 15 synchronous segmentings of quench station 31, heating; Water coolant is flowed into by tempering induction coil cooling water inlet 47, is flowed out by tempering induction coil cooling water outlet 48; Two circle dibit quenching induction coils 15 of quench station 31 will quench simultaneously to next workpiece this moment, tempering is finished, rotary disk 17 transpositions make it to enter the loading and unloading position, manually take off heat treated part and load onto simultaneously workpiece to be heated, circulation finishes in batch that the continuity of workpiece is quenched, tempering heat treatment production thus.
Claims (3)
1. simultaneously high-frequency quenching tempering numerically-controlled machine, comprise circuit part and mechanical part, described circuit part comprises: digital control system control module, Q-tempering system control module, Lathe control terminals, quenching induction coil control terminals, tempering induction coil control terminals, bundle conductor; Described mechanical part comprises: machine tool main body (1), extension cabinet, numerical control operating platform and eight station rotary work piece clamping apparatus disk divided rotating mechanisms (8); Described extension cabinet is three-decker, and the upper strata is built-in with quenching high frequency electric source and tempering high frequency electric source, the built-in hardening liquid recycle pump in middle level and cooling water circulating pump, the built-in hardening liquid case of lower floor and cooling water tank; Configuration three-axis numerical control system and screen display in the described numerical control operating platform; It is characterized in that: radio-frequency generator fixed rack (9) is being connected on the Z axis slide unit (13) of numerically-controlled machine vertical movement, two circle dibit quenching induction coils (15) are connected by quenching induction coil hydraulic quick coupler (32) with the quenching radio-frequency generator (14) that is installed in the upper side of radio-frequency generator fixed rack (9) and hardening liquid recycle pump, described radio-frequency generator fixed rack (9) is positioned at vertical movement mechanism (12) two bottom sides, and vertical movement mechanism (12) is positioned at the back upper place of horizontal table (2); Two circle dibit tempering induction coils (11) are connected by tempering induction coil hydraulic quick coupler (29) with the tempering radio-frequency generator (10) and the cooling water circulating pump that are installed in the upper opposite side of radio-frequency generator fixed rack (9).
2. a kind of simultaneously high-frequency quenching tempering numerically-controlled machine according to claim 1, it is characterized in that: described pair of circle dibit quenching induction coil (15) is platy structure, be provided with hardening liquid runner (42) and the quenching induction coil water coolant runner (43) of square-section in the plate, tabular induction coil middle part is provided with the actual induction heating work district in class " 8 " word hole, place, the middle part of the side, class " 8 " word hole is open-minded, respectively there is the induction heating workspace of a different pore size on both sides, the middle part of the side, rib inwardly is shrunk to circle inclined-plane (45) in the quenching induction coil in class " 8 " word wide aperture quenching induction zone (37) lower edge, uniform a plurality of quenching induction coils inclined-plane spray holes (44) on this inclined-plane, class " 8 " word small-bore quenching induction zone (38) is provided with circle inclination spray hole (46) in the quenching induction coil, the hardening liquid runner of actual induction heating zone, class " 8 " word hole is connected, and the water coolant runner in the quenching induction coil on the outer circle (39) of circle (40) and quenching induction coil is connected by quenching induction coil bypass branch (36); Described pair of circle dibit quenching induction coil (15) is radially two circle stacks, and turn-to-turn is provided with quenching induction coil isolator (41);
Described pair of circle dibit tempering induction coil (11) is platy structure, be provided with the tempering induction coil cooling water channel 55 of square-section in the plate, tabular induction coil middle part is provided with actual induction heating zone, class " 8 " word hole, place, the middle part of the side, class " 8 " word hole is open-minded, both sides, the middle part of the side are respectively class " 8 " word smaller aperture due tempering workspace (52) and class " 8 " word larger aperture tempering workspace (53), the water coolant runner of class " 8 " word hole tempering actual induction heating zone is connected, and the water coolant runner in the tempering induction coil on the outer circle (51) of circle (50) and tempering induction coil is connected by tempering induction coil bypass branch (49); Be provided with tempering induction coil isolator (54) between the inside and outside circle of tempering induction coil.
3. a kind of simultaneously high-frequency quenching tempering numerically-controlled machine according to claim 1, it is characterized in that: described eight station rotary work piece clamping apparatus disk divided rotating mechanisms (8) comprise the bearing spider system (19) that is installed on the horizontal table, Q-tempering working position Workpiece Rotating mechanism (20) and rotary disk (17), wherein: the upper circumference uniform distribution of rotary disk (17) is equipped with eight workpiece positioning rotating shafts (16) of high-accuracy rolling bearing, every workpiece positioning rotating shaft (16) stretches out rotary disk (17) lower part rotating shaft serration rubber wheel (24) is housed, every workpiece positioning rotating shaft (16) stretches out rotary disk (17) upper section many lobes internal expansion type chuck or claw-type clamp is housed, wherein: active serration rubber wheel (23) engagement on every workpiece positioning rotating shaft serration rubber wheel (24) and the dc speed-regulating motor output shaft; Described dc speed-regulating motor (25) is installed on the electric machine support (26) on the horizontal table that is positioned at rotary disk (17) below; Waterproof bulkhead (6) is installed under rotary disk (17), is lined with rubber pad (7) between rotary disk (17) and the waterproof bulkhead (6); Cog belt transmission system (4), bearing spider system (19) and Q-tempering working position Workpiece Rotating mechanism (20) are positioned under the waterproof bulkhead (6), intercepting basin cover (5) is along waterproof bulkhead (6) periphery around a circle, have hydrops at low one jiao of place of waterproof bulkhead (6) and reclaim duct (28), this duct is communicated with intercepting basin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012202786119U CN202808875U (en) | 2012-06-13 | 2012-06-13 | Numerical-control machine tool capable of quenching and tempering simultaneously at high frequency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012202786119U CN202808875U (en) | 2012-06-13 | 2012-06-13 | Numerical-control machine tool capable of quenching and tempering simultaneously at high frequency |
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| CN202808875U true CN202808875U (en) | 2013-03-20 |
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| CN2012202786119U Expired - Fee Related CN202808875U (en) | 2012-06-13 | 2012-06-13 | Numerical-control machine tool capable of quenching and tempering simultaneously at high frequency |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719631A (en) * | 2012-06-13 | 2012-10-10 | 淮海工业集团有限公司 | Numerical control machine tool capable of quenching and tempering simultaneously at high frequency |
| CN106148662A (en) * | 2015-03-31 | 2016-11-23 | 上海纳铁福传动系统有限公司 | Annealing device and heat treatment method for heating quenching three pin shaft fork shank |
| US11473161B2 (en) | 2017-11-24 | 2022-10-18 | Grant Prideco, L.P. | Apparatus and methods for heating and quenching tubular members |
-
2012
- 2012-06-13 CN CN2012202786119U patent/CN202808875U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719631A (en) * | 2012-06-13 | 2012-10-10 | 淮海工业集团有限公司 | Numerical control machine tool capable of quenching and tempering simultaneously at high frequency |
| CN106148662A (en) * | 2015-03-31 | 2016-11-23 | 上海纳铁福传动系统有限公司 | Annealing device and heat treatment method for heating quenching three pin shaft fork shank |
| CN106148662B (en) * | 2015-03-31 | 2017-11-03 | 上海纳铁福传动系统有限公司 | Annealing device and heat treatment method for the pin shaft fork shank of heating quenching three |
| US11473161B2 (en) | 2017-11-24 | 2022-10-18 | Grant Prideco, L.P. | Apparatus and methods for heating and quenching tubular members |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20130613 |