CN117144105A - Laser quenching process and device for stator inner cavity of screw pump oil extraction system - Google Patents
Laser quenching process and device for stator inner cavity of screw pump oil extraction system Download PDFInfo
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- CN117144105A CN117144105A CN202310827732.7A CN202310827732A CN117144105A CN 117144105 A CN117144105 A CN 117144105A CN 202310827732 A CN202310827732 A CN 202310827732A CN 117144105 A CN117144105 A CN 117144105A
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- 238000010791 quenching Methods 0.000 title claims abstract description 90
- 230000000171 quenching effect Effects 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008569 process Effects 0.000 title claims abstract description 43
- 238000000605 extraction Methods 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 210000000078 claw Anatomy 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000005121 nitriding Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
-
- 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
The invention relates to a laser quenching process and a device for a stator inner cavity of a screw pump oil extraction system, wherein the process comprises the following steps: the first reference positioning, the second reference positioning, the selection of a quenching scanning path and the laser quenching mechanism quench the stator according to the selected quenching scanning path. According to the invention, three different quenching scanning paths are arranged, namely, the stator length is scanned along the axial direction of the stator and in the first fixed scanning path times, the stator length is scanned around the inner contour of the stator and in the screw pitch and the second fixed scanning path times, and the stator length is scanned around the inner contour of the stator in a spiral line, so that the problem of distortion of the processed stator caused by a traditional heat treatment mode can be effectively solved, and the problems of influence on rotor assembly due to the change of the length direction and the increase of errors caused by the distortion of the stator are further avoided.
Description
Technical Field
The invention relates to the technical field of laser quenching, in particular to a laser quenching process and device for an inner cavity of a stator of a screw pump oil extraction system.
Background
The screw pump oil extraction system comprises four parts, namely an electric control part, a ground driving part, an underground pump part and a matched tool part, wherein the underground pump part comprises a stator and a rotor, the inner surface of the stator is an inner cavity with a double-spiral curved surface or a multi-spiral curved surface, and the stator is matched with the metal rotor. The rotor rotates in the stator to realize the suction function.
At present, the processing of the inner cavity of the stator adopts nitriding treatment, in particular to a chemical heat treatment process for making nitrogen atoms permeate into the surface layer of a workpiece in a certain medium at a certain temperature, so that the nitrided stator has excellent wear resistance and fatigue resistance. However, the stator is deformed and distorted through the length change of the stator after nitriding treatment, the size error of the inner cavity of the stator is increased, even the assembly with a rotor is influenced, and the pressure of a screw pump is influenced, so that the torque of the screw pump oil extraction system is changed, the pressure bearing of each stage of the screw pump oil extraction system is uneven, and the sealing and the working performance of the screw pump oil extraction system are influenced.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a laser quenching process and apparatus for a stator cavity of a screw pump oil recovery system, so as to solve one or more problems in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a laser quenching process for a stator inner cavity of a screw pump oil extraction system comprises the following steps:
a first datum location;
a second datum location;
selecting a quenching scanning path;
and the laser quenching mechanism quenches the stator according to the selected quenching scanning path.
Further, the first reference positioning includes the steps of:
rotating the chuck to a reference position;
inserting a portion of the stator into the chuck;
and rotating the stator to enable the second plane of the stator to be abutted with the positioning surface of the positioning block.
Further, the second reference positioning includes the steps of:
moving the laser quenching device
The center of the gun body in the laser quenching device is overlapped with the center of the stator.
Further, the quenching scanning path is a path which is scanned repeatedly along the axial direction of the stator and in the first fixed scanning path times until the inner contour of the whole stator is scanned.
Further, the first fixed scan path number is obtained according to the following formula:
first fixed scan path number = stator inner profile/spot diameter
Further, the quenching scanning path is a path which surrounds the inner contour of the stator and scans the length of the stator by the screw pitch and the number of times of the second fixed scanning path.
Further, the pitch is the same as the spot diameter.
Further, the quench scan path is a path that scans the length of the stator in a spiral around the inner contour of the stator.
Further, the length of the spiral line is the same as that of the stator, and the pitch of the spiral line is the same as that of the stator.
Correspondingly, the invention also provides a laser quenching process for the inner cavity of the stator of the screw pump oil extraction system, the device comprises a pair of slipway installation seats and first servo slipways respectively arranged on the slipway installation seats, the movable ends of the first servo slipways are jointly connected with the fixed end of the second servo slipway, the movable end of the second servo slipway is connected with the fixed end of the third servo slipway, the movable end of the third servo slipway is connected with a gun body control part through a fixed seat, the gun body control part is connected with a gun body through a gun rod, a reflecting lens and a laser head are respectively arranged on the gun body, the reflecting lens is covered on the laser head, and the outer side of the reflecting lens is covered with a pressing plate; and a reference plate is further arranged on the gun body near the pressing plate, and the reference plate is provided with a reference plane.
Furthermore, the device also comprises a chuck, wherein clamping claws are uniformly distributed on the chuck, a positioning block is further arranged on the surface of the chuck between any two clamping claws, and the inner side of the positioning block is provided with a positioning surface.
Compared with the prior art, the invention has the following beneficial technical effects that
According to the invention, three different quenching scanning paths are arranged, namely, the stator length is scanned along the axial direction of the stator and in the first fixed scanning path times, the stator length is scanned around the inner contour of the stator and in the screw pitch and the second fixed scanning path times, and the stator length is scanned around the inner contour of the stator in a spiral line, so that the problem of distortion of the processed stator caused by a traditional heat treatment mode can be effectively solved, and the problems of influence on rotor assembly due to the change of the length direction and the increase of errors caused by the distortion of the stator are further avoided.
Through seting up the groove that has the internal screw thread on the rifle body, can compress tightly the reflector plate through clamp plate and this groove threaded connection, avoid the reflector plate to break away from the rifle body to this effect that influences laser quenching.
The reference plane is arranged on the reference sheet, so that the gun body, the laser head and the first plane of the stator can be positioned, and further, the program is ensured to run based on the reference coordinate system all the time.
Drawings
Fig. 1 shows a schematic structural diagram of a laser quenching process and a device for a stator cavity of a screw pump oil extraction system according to an embodiment of the invention.
Fig. 2 shows a schematic structural diagram of a laser quenching process for an inner cavity of a stator of a screw pump oil extraction system and a servo slipway in a device according to an embodiment of the invention.
Fig. 3 shows a schematic structural diagram of a laser quenching process for a stator cavity of a screw pump oil extraction system and a laser quenching mechanism in a device according to an embodiment of the invention.
Fig. 4 shows an enlarged view of a laser quenching process for a stator cavity of a screw pump oil extraction system and a laser quenching mechanism in a device according to an embodiment of the invention.
Fig. 5 shows a schematic diagram of a laser quenching process and a device for a stator cavity of a screw pump oil extraction system in an embodiment of the invention.
Fig. 6 shows a schematic diagram of a laser quenching process and apparatus for a stator cavity of a screw pump oil recovery system along a first scanning path according to an embodiment of the present invention.
Fig. 7 shows a schematic diagram of a laser quenching process and a device for a stator cavity of a screw pump oil extraction system along a second scanning path according to an embodiment of the invention.
Fig. 8 shows a schematic diagram of a laser quenching process and a device for a stator cavity of a screw pump oil recovery system along a third scanning path according to an embodiment of the invention.
Fig. 9 shows a schematic cross-sectional view of a stator in a laser quenching process and apparatus for a stator cavity of a screw pump oil recovery system according to an embodiment of the present invention.
The reference numerals in the drawings: 1. a ground platform; 2. a slipway mounting seat; 30. a first servo slipway; 31. a second servo slipway; 32. a third servo slipway; 300. a motor; 301. a motor mounting seat; 302. a coupling; 303. a guide rail; 304. a screw rod; 305. a screw nut; 306. a slide block; 307. a fixing seat; 400. a gun body control part; 401. a gun rod; 402. a gun body; 403. a laser head; 404. a reflection lens; 405. a reference sheet; 4050. a reference plane; 406. a pressing plate; 5. a stator; 500. a first plane; 501. a second plane; 600. a claw; 601. a positioning block; 6010. a positioning surface; 6. a chuck; 7. and a supporting seat.
Detailed Description
In order to make the purposes, technical schemes and advantages of the invention more clear, the laser quenching process and the device for the stator inner cavity of the screw pump oil extraction system provided by the invention are further described in detail below with reference to the accompanying drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the invention. For a better understanding of the invention with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or essential characteristics thereof.
Embodiment one:
referring to fig. 1 to 4, a laser quenching device for an inner cavity of a stator of a screw pump oil extraction system comprises a pair of sliding table mounting seats 2 and first servo sliding tables 30 respectively arranged on the sliding table mounting seats 2, wherein the sliding table mounting seats 2 are arranged on a ground platform 1, movable ends of the first servo sliding tables 30 are jointly connected with fixed ends of second servo sliding tables 31, movable ends of the second servo sliding tables 31 are connected with fixed ends of third servo sliding tables 32, movable ends of the third servo sliding tables 32 are connected with a gun body control part 400 through a fixing seat 307, the gun body control part 400 is connected with a gun body 402 through a gun rod 401, a reflecting lens 404 and a laser head 403 are respectively arranged on the gun body 402, the reflecting lens 404 is arranged on the outer side of the laser head 403, a groove with internal threads is further formed on the gun body 402, the pressing plate 406 is connected with the internal threads through external threads, and then the reflecting lens 404 can be connected in the groove and pressed tightly, and detachment of the reflecting lens from the gun body 402 is avoided.
Further, referring to fig. 1 to 4, during quenching, the stator and the laser generate heat after being irradiated, and the metal spark splashes, and the reflecting mirror 404 protects the laser head 403 from the spark. Preferably, in the laser quenching apparatus for a stator cavity of a screw pump oil extraction system according to the embodiment of the present invention, the reflecting lens 404 is preferably a quartz glass lens, and the quartz glass lens has the advantages of high temperature resistance, splash resistance, and high light transmittance. Of course, in other embodiments of the present invention, the reflecting mirror 404 may be made of materials other than quartz, such as a resin material, a glass material, or a coating material.
Further, referring to fig. 1 to 4, a reference plate 405 is further disposed on the gun body 402 near the reflecting mirror 404, the reference plate 405 is made of iron or steel, a reference plane 405 is disposed on the reference plate 405, the reference plane 405 is located at the center of the reflecting mirror 404, and the iron reference plate 405 not only can realize positioning of the reference, but also can be connected with the magnetic attraction part of the detection tool, such as a wire gauge, due to the iron material, so as to ensure positioning and installation of the detection tool. The gun body control unit 400, the gun rod 401, the gun body 402, the reflecting mirror 404, and the laser head 403 together constitute a laser quenching apparatus.
Further, please continue to refer to fig. 2, the first servo sliding table 30, the second servo sliding table 31 and the third servo sliding table 32 have the same structure, and each include a motor 300, the motors 300 are fixedly connected to a motor mounting seat 301, the output end of the motors 300 is connected to a screw rod 304 through a coupling 302, the screw rod 304 is rotatably disposed on the inner side of the guide rail 303, a screw rod nut 305 is further connected to the outer side of the screw rod 304, and the screw rod nut 305 is connected to a sliding block 306, so that the sliding block 306 can perform translational movement along the guide rail 303 through the screw rod nut 305, and the sliding block 306 is further connected to a fixing seat 307. Wherein, the first servo slipway 30 is set along the Y direction, the second servo slipway 31 is set along the X direction, and the third servo slipway 32 is set along the Z direction. The sliding block 306 forms movable ends of the first servo slide 30, the second servo slide 31, and the third servo slide 32, and the guide rail 303 forms fixed ends of the first servo slide 30, the second servo slide 31, and the third servo slide 32. Wherein each slide block 306 in the first servo slipway 30 is connected with the guide rail 303 of the second servo slipway 31, and likewise, the slide blocks 306 of the second servo slipway 31 are connected with the guide rail 303 of the third servo slipway 32.
Further, referring to fig. 1 and 5, the laser quenching device for the stator inner cavity of the screw pump oil extraction system further includes a chuck 6, the chuck 6 is mounted on a supporting seat 7, jaws 600 are uniformly distributed on the chuck, the chuck 6 is a three-jaw chuck, a positioning block 601 is further disposed between any two jaws 600 on the surface of the chuck 6, a positioning surface 6010 is disposed on the inner side of the positioning block 601, and the positioning surface 6010 is a plane.
Likewise, to achieve the datum positioning, a first plane 500 is milled out at the upper end of the outside of the stator 5 and a second plane 501 is milled out at the lower end of the outside of the stator.
Referring to fig. 1, the process of the laser quenching device for the stator cavity of the screw pump oil extraction system comprises the following steps:
s1: the first reference positioning method specifically comprises the following steps:
s100: the chuck 6 is rotated to a reference position, which is a 0 degree position of a circle centered on the center of the chuck, i.e., at the start of the circle, and in this embodiment, the 0 degree position is the rotation of the chuck 6 until the positioning surface 6010 of the chuck 6 is parallel to the X axis.
S101: the stator 5 is inserted into the center through hole of the chuck 6.
S102: the stator 5 is rotated, and the second plane 501 of the stator 5 is abutted against the positioning surface 6010 of the positioning block 601, so that positioning between the stator 5 and the chuck 6 is realized.
S2: a second datum location; the second reference positioning comprises the following steps:
s200: and (3) moving the laser quenching device to enable the center of the gun body in the laser quenching device to coincide with the center of the stator. Specifically, referring to fig. 1 and 2, the motor 300 is started, and the output end thereof drives the screw rod 304 to rotate through the coupling 302, and since the screw rod 304 is provided with the screw rod nut 305, the screw rod nut 305 is connected with the slider 306. Therefore, the sliding block 306 of the first servo sliding table 30 moves the second servo sliding table 31 to the position with the Y coordinate of 0, and then moves the third servo sliding table 32 to the position with the X coordinate of 0 through the second servo sliding table 31, and at this time, the center position of the gun body 402 in the third servo sliding table 32 is exactly located at the center of the stator 5 and coincides with the center position.
S201: similarly, in order to achieve the reference positioning of the laser head 403 and the stator 5 in the laser quenching apparatus, the laser quenching apparatus needs to be adjusted at the time of the first laser quenching, specifically, the gun bar 401 is rotated to rotate the reference plane 4050 in the gun body 402 to be perpendicular to the first plane 500.
S3: selecting a quenching scanning path; specifically, referring to fig. 6, in the laser quenching process for the stator cavity of the screw pump oil extraction system according to the present embodiment, the quenching scanning path is a path that is scanned reciprocally along the axial direction of the stator 5 and the number of times of the first fixed scanning path until the whole inner contour of the stator is scanned.
Specifically, the first fixed scan path number is calculated according to the following formula:
first fixed scan path number = stator inner profile/spot diameter
Specifically, please continue to refer to fig. 6 and fig. 9, in the laser quenching process for the inner cavity of the stator of the screw pump oil extraction system in the first embodiment, the inner contour of the stator 5 is composed of two semicircles with radius R and two straight line segments L, the inner contour of the stator 5 is the perimeter of the stator, in the first embodiment, the perimeter of the stator 5 is 239.64mm, preferably the diameter of the light spot is 3mm, and according to the above formula, the first fixed scanning path times= 239.64mm/3mm approximately equal to 80 can be obtained, that is, the whole stator can be completely scanned by scanning for 80 times along the upper end of the stator 5 to the lower end of the stator 5.
After the first fixed number of scanning paths is obtained, the scanning length at each scanning along the circumference of the stator 5 can also be obtained according to the following formula:
scan length per inch = stator inner contour/first fixed scan path number
Specifically, please continue to refer to fig. 6, the scanning length= 239.64mm/80≡3mm per inch can be obtained according to the above formula, so the scanning length at each inch along the inner contour of the stator 5 can be obtained by the above formula to be 3mm.
S4: the stator is quenched by the laser quenching mechanism according to the selected quenching scanning path.
Specifically, referring to fig. 1, 2, 6 and 9, the operating power parameter of the laser head 403 in the laser quenching mechanism is 1500 w-1800 w, the scanning speed of the laser head 403 is 600-800 mm/min, and the center of the light spot emitted by the laser head 403 coincides with the plane of the stator 5. It should be noted that the adjustment of the power parameter and the scanning speed affects the hardness and the layer depth of quenching, and under the same scanning speed, the stator with too high operating power melts, and the depth and the hardness of quenching with too low power are reduced.
Further, according to the program, the laser head 403 is first moved to the center of the stator 5, i.e. the coordinate values are X0 and Y0, then according to the set program, the laser head 403 is moved to the inner contour edge along the arrow direction, since the scanning length per inch is 3mm, the laser head 403 starts scanning from the starting position, after scanning for 3mm, i.e. scanning from the upper end of the stator 5 to the lower end of the stator 5 along the axial direction of the stator 5, the movement of the laser head 403 is moved by the first servo slide 30, the second servo slide 31 and the third servo slide 32 according to the coordinate values in the input set program, after scanning along the length of the stator 5 is completed, scanning for 3mm at the lower end of the stator 5, then scanning from the lower end of the stator 5 to the upper end of the stator 5, and circulating until the quenching scanning of the whole stator is completed according to the fixed scanning path number, and then the first servo slide 30, the second servo slide 31 and the third servo slide 32 control the laser head 403 to be lifted to the initial position along the Z direction.
Embodiment two:
in the second embodiment, in the laser quenching process for the inner cavity of the stator of the screw pump oil extraction system, the quenching scanning path is a path which surrounds the inner contour of the stator and scans the length of the stator one by one with a certain pitch. Specifically, referring to fig. 1 and 7, the path is from the upper end of the stator 5, and each time the inner contour of the stator is scanned, the inner contour of the stator is scanned downward at a fixed pitch, and then the inner contour of the stator is scanned repeatedly and the inner contour of the stator is scanned downward at the fixed pitch until the complete root stator 5 is scanned.
Specifically, referring to fig. 1 and 7, the pitch is the same as the spot diameter, and the second fixed scan path number can be obtained according to the length of the stator and the spot diameter, where the second fixed scan path number can be obtained by the following formula:
second fixed scan path number = stator length/spot diameter
In the laser quenching process for the inner cavity of the stator of the screw pump oil extraction system in the second embodiment, the length of the stator 5 is preferably 480mm, and the spot diameter is preferably 3mm, so that the second fixed scanning path number=480 mm/3 mm=160, that is, the second fixed scanning path number is 160, and the inner contour, that is, the perimeter, of the stator 5 in each scanning is 239.64mm according to the formula.
After the second fixed scanning path number is obtained, the laser head 403 is firstly moved to the center of the stator 5 according to the program, namely, the coordinate values are X0 and Y0, then the laser head 403 is moved to the beginning of the inner contour edge according to the set program, the laser head 403 starts scanning from the beginning position because the scanning length per inch is 3mm, after the inner contour is scanned once, the laser head 403 is controlled to descend by the first servo sliding table 30, the second servo sliding table 31 and the third servo sliding table 32 according to the program by the set program at a depth of 3mm, then the laser head 403 is scanned along the inner contour of the stator 5 again, and the cycle is circulated until the length of the complete stator is scanned, and then the laser head 403 is controlled to be lifted to the initial position along the Z direction by the first servo sliding table 30, the second servo sliding table 31 and the third servo sliding table 32, so that quenching scanning is completed.
Embodiment III:
in the laser quenching process for the inner cavity of the stator of the screw pump oil extraction system, the quenching scanning path is a path for scanning the length of the stator around the inner contour of the stator by a spiral line, the pitch of the spiral line is the same as the pitch of the stator 5, and referring to fig. 9, the diameter of the spiral line is the diameter of a semicircle
Specifically, referring to fig. 1 and 8, the path is from the upper end of the stator 5, after calculating the scanning length per inch, the inner contour around the stator 5 is scanned along the spiral line from the upper end of the stator 5 to the lower end of the stator 5 after scanning the scanning length per inch, and then is scanned along another spiral line from the lower end of the stator 5 to the upper end of the stator 5 after scanning the scanning length per inch again, so as to cycle back and forth until the inner contour around the stator 5 is completely scanned.
Further, referring to fig. 8 and 9, taking the length of the stator 5 as 480mm as an example, the spiral line refers to taking any point in the inner contour of the upper surface of the stator 5, for example, taking coordinate values of (X0, Y50, Z0) as shown by A1 point in fig. 9, after confirming the position, quenching scanning is performed along the axial direction of the stator 5 by using the spiral line shown in fig. 8, and then the position of the A2 point is located at A2 point (not shown in the figure), and the coordinate value of the position of the A2 point is (X0, Y50, Z481), so that the position of the A1 point and the positions of the A2 point are coaxial, and the spiral line is the spiral line connecting the A1 point and the A2 point.
Further, referring to fig. 8 and 9, in the laser quenching process for the stator cavity of the screw pump oil extraction system according to this embodiment, the pitch of the spiral line is constant, and the spiral line may be a left-handed spiral line or a right-handed spiral line. In fig. 8, the number of spirals is thus only two for clarity of illustration, but in practice the number of spirals is required to cover the inner contour of the entire stator 5 in the quench scan, the number of spirals in fig. 8 being only illustrative.
The differences between the heat treatment mode by the laser quenching of the present invention and the conventional heat treatment mode are shown in table 1:
| material | Quantity of | Treatment mode | Time | Hardness HV | Depth of hardness layer | Deformation amount | Subsequent welding impact |
| 38CrMoAL | 20 | Laser quenching | 20 | 700 | 0.7 | 0.05 | Without any means for |
| 38CrMoAL | 20 | Ion nitriding | 144 | 1200 | 0.5 | 0.2 | Requiring nitrogen protection treatment |
| 38CrMoAL | 20 | Surface high frequency | 700 | 2 | 0.5 | ||
| 38CrMoAL | 20 | Vacuum quenching | 96 | 700 | Integral body | 0.4 | Non-weldable |
As can be seen from table 1, in the case of the same stator material and number, the stator subjected to the laser quenching treatment according to the invention is far lower in time than the heat treatment time required by the ion nitriding and the vacuum quenching, the deep hardness is higher than the deep hardness after the ion nitriding, the hardness is higher than the standard hardness 650, the hardness layer depth is also 0.5 greater than the standard hardness layer depth, the deformation amount can be reduced to the minimum, the subsequent welding is not influenced, and the whole deformation amount is small. The surface high frequency can only be processed by extending into a part of the stator because the length of the high frequency head is very short, and the hardness and the deformation cannot be better than the effect of laser quenching treatment.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (11)
1. The laser quenching process for the stator inner cavity of the screw pump oil extraction system is characterized by comprising the following steps of:
a first datum location;
a second datum location;
selecting a quenching scanning path;
and the laser quenching mechanism quenches the stator according to the selected quenching scanning path.
2. The laser quenching process for the stator cavity of the screw pump oil extraction system as claimed in claim 1, wherein the process comprises the following steps: the first datum positioning comprises the following steps:
rotating the chuck to a reference position;
inserting a portion of the stator into the chuck;
and rotating the stator to enable the second plane of the stator to be abutted with the positioning surface of the positioning block.
3. The laser quenching process for the stator cavity of the screw pump oil extraction system as claimed in claim 1, wherein the process comprises the following steps: the second reference positioning comprises the following steps:
moving the laser quenching device
The center of the gun body in the laser quenching device is overlapped with the center of the stator.
4. The laser quenching process for the stator cavity of the screw pump oil extraction system as claimed in claim 1, wherein the process comprises the following steps: the quenching scanning path is a path which is scanned repeatedly along the axial direction of the stator and in the first fixed scanning path times until the inner contour of the whole stator is scanned.
5. The laser quenching process for the stator cavity of the screw pump oil extraction system as claimed in claim 4, wherein: the first fixed scanning path number is calculated according to the following formula:
first fixed scan path number = stator inner profile/spot diameter.
6. The laser quenching process for the stator cavity of the screw pump oil extraction system as claimed in claim 1, wherein the process comprises the following steps: the quenching scanning path is a path which surrounds the inner contour of the stator and scans the length of the stator with the screw pitch and the times of the second fixed scanning path.
7. The laser quenching process for the stator cavity of the screw pump oil extraction system as claimed in claim 1, wherein the process comprises the following steps: the pitch is the same as the spot diameter.
8. The laser quenching process for the stator cavity of the screw pump oil extraction system as claimed in claim 1, wherein the process comprises the following steps: the quench scan path is a path that scans the length of the stator in a spiral around the inner contour of the stator.
9. The laser quenching process for the stator cavity of the screw pump oil extraction system as claimed in claim 8, wherein: the length of the spiral line is the same as that of the stator, and the pitch of the spiral line is the same as that of the stator.
10. The apparatus for a laser quenching process for a stator cavity of a screw pump oil recovery system according to any one of claims 1 to 9, wherein: the device comprises a pair of slipway installation seats and first servo slipways respectively arranged on the slipway installation seats, wherein the movable end of each first servo slipway is connected with the fixed end of a second servo slipway, the movable end of the second servo slipway is connected with the fixed end of a third servo slipway, the movable end of the third servo slipway is connected with a gun body control part through a fixed seat, the gun body control part is connected with a gun body through a gun rod, a reflecting lens and a laser head are respectively arranged on the gun body, the reflecting lens is covered on the laser head, and the outer side of the reflecting lens is covered with a pressing plate; and a reference plate is further arranged on the gun body near the pressing plate, and the reference plate is provided with a reference plane.
11. The apparatus for a laser quenching process for a stator cavity of a screw pump oil recovery system of claim 10, wherein: the device also comprises a chuck, wherein clamping claws are uniformly distributed on the chuck, a positioning block is further arranged on the surface of the chuck between any two clamping claws, and the inner side of the positioning block is provided with a positioning surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310827732.7A CN117144105A (en) | 2023-07-07 | 2023-07-07 | Laser quenching process and device for stator inner cavity of screw pump oil extraction system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310827732.7A CN117144105A (en) | 2023-07-07 | 2023-07-07 | Laser quenching process and device for stator inner cavity of screw pump oil extraction system |
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| CN202310827732.7A Pending CN117144105A (en) | 2023-07-07 | 2023-07-07 | Laser quenching process and device for stator inner cavity of screw pump oil extraction system |
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| CN105297006A (en) * | 2015-11-13 | 2016-02-03 | 辽宁思达思克实业有限公司 | Pipe inner laser cladding strengthening device |
| CN207971606U (en) * | 2018-03-06 | 2018-10-16 | 佛山市优德机电科技有限公司 | Welder |
| CN109365998A (en) * | 2018-12-24 | 2019-02-22 | 中南大学 | Laser soldering device and vision positioning method based on machine vision positioning |
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| CN86104349A (en) * | 1986-07-15 | 1988-02-03 | 中国科学院金属研究所 | A kind of technology of surface hardening treatment by laser and device |
| EP0603718A1 (en) * | 1992-12-22 | 1994-06-29 | Allweiler AG | Housing for screw rotor pump |
| CN2175764Y (en) * | 1993-04-05 | 1994-08-31 | 华中理工大学 | Machine tool for laser quench of cylinder jacket |
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