CN111961828B - Furnace body for heat treatment processing of mechanical parts - Google Patents
Furnace body for heat treatment processing of mechanical parts Download PDFInfo
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- CN111961828B CN111961828B CN202010783978.5A CN202010783978A CN111961828B CN 111961828 B CN111961828 B CN 111961828B CN 202010783978 A CN202010783978 A CN 202010783978A CN 111961828 B CN111961828 B CN 111961828B
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- furnace body
- threaded rod
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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
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
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- 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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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
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Abstract
The invention relates to the technical field of accessory processing, and discloses a furnace body for heat treatment processing of mechanical accessories, which comprises a furnace body, wherein the bottom of the furnace body is fixedly connected with supporting legs, an opening and closing door is arranged inside the furnace body, a supporting plate is fixedly connected inside the furnace body, a heat insulation plate is arranged at the bottom of the supporting plate, a heat dissipation fan is arranged on the surface of the furnace body, and a water tank is fixedly arranged on the inner bottom wall of the furnace body. This be used for machine parts thermal treatment furnace body for processing, the motor drives and rotates platform and fixing device, and then makes the threaded rod rotate and carry out thermal treatment, and the convenience is that the threaded rod rotates and carries out thermal treatment, thereby improves the degree of consistency that the threaded rod is heated after the heating, avoids influencing the hardness of threaded rod because the threaded rod is heated inhomogeneously, improves the effect after the threaded rod thermal treatment, increases the hardness of threaded rod, reduces the threaded rod because it causes the threaded rod fragile to be heated inhomogeneously.
Description
Technical Field
The invention relates to the technical field of accessory processing, in particular to a furnace body for heat treatment processing of mechanical accessories.
Background
The physical and chemical properties of the metal are seriously unstable in use due to more impurities in the metal during the mining process. Through heat treatment processing, can effectually purify it, perfect its inside purity, heat treatment technique can also strengthen its promotion of quality, optimizes its actual performance. The heat treatment technology is a process of placing a workpiece in certain media for heating, keeping the workpiece at a certain temperature, placing the workpiece for a certain time, and then treating the workpiece by using cooling modes with different speeds.
The threaded rod needs to carry out heat treatment after processing is accomplished, improves the wearability of threaded rod, consequently needs the heating furnace body to heat the threaded rod, and some heating furnace bodies that have now are when heating the threaded rod, owing to keep flat the threaded rod in heating furnace body's inside, thereby the threaded rod when making the heating easily is heated inhomogeneous influence the effect of heating the threaded rod, consequently needs the heating furnace body that conveniently makes threaded rod thermally equivalent.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a furnace body for heat treatment processing of mechanical parts, which has the advantages of conveniently heating a threaded rod uniformly and the like, and solves the problem that when some heating furnace bodies heat the threaded rod, the threaded rod is not uniformly heated easily because the threaded rod is horizontally arranged in the heating furnace body, so that the heating effect of the threaded rod is influenced.
(II) technical scheme
In order to realize the purpose of conveniently and uniformly heating the threaded rod, the invention provides the following technical scheme: a furnace body for heat treatment processing of mechanical parts comprises a furnace body, wherein the bottom of the furnace body is fixedly connected with supporting legs, an opening and closing door is arranged inside the furnace body, a supporting plate is fixedly connected inside the furnace body, a heat insulation plate is arranged at the bottom of the supporting plate, a heat dissipation fan is arranged on the surface of the furnace body, a water tank is fixedly arranged on the inner bottom wall of the furnace body, air holes are formed in the top of the water tank, a motor is fixedly arranged on the inner bottom wall of the furnace body, a cooling pipe is arranged on the surface of the motor, a first rotary disc is fixedly connected to the output end of the motor, a lug is fixedly connected to the edge of the first rotary disc, a rotating device is arranged inside the furnace body and comprises a supporting rod, the supporting rod is fixedly connected to the inner bottom wall of the furnace body, a second rotary disc is arranged on the top of the supporting rod, and a first groove is formed in the edge of the second rotary disc, the top fixedly connected with transfer line of second carousel, the top fixedly connected with of transfer line rotates the platform, the top of rotating the platform is provided with fixing device, fixing device includes the head rod, the head rod is at the top fixed connection who rotates the platform, the edge that rotates the platform has seted up the second recess, the lower extreme surface of head rod is provided with the centre gripping arm, the top of centre gripping arm is provided with the baffle, the inside of centre gripping arm is provided with the second connecting rod, the inside fixedly connected with spring of centre gripping arm.
Preferably, the opening and closing door is rotatably connected inside the furnace body, the heat insulation plate is fixedly connected on the inner wall of the furnace body, the furnace body is divided into an upper bin and a lower bin by the support plate, the bumps are semicircular, the cooling pipes are movably sleeved on the surface of the motor, and the cooling pipes are threaded.
Preferably, the second rotating disc is rotatably connected to the top of the supporting rod, the first groove is in the shape of a semicircular groove, and the protruding block is connected to the inside of the first groove in a sliding manner.
Preferably, the transmission rod penetrates through the heat insulation plate and the support plate to be fixedly connected with the rotating table, the transmission rod is rotatably connected with the heat insulation plate and the support plate, and the rotating table is rotatably connected with the top of the support plate.
Preferably, the second groove is in the shape of a semicircular groove, the clamping arm is slidably connected to the surface of the first connecting rod, and the baffle is fixedly connected to the surface of the first connecting rod.
Preferably, the second connecting rod is rotatably connected inside the clamping arm, and the second connecting rod is fixedly connected to the top of the rotating table.
(III) advantageous effects
Compared with the prior art, the invention provides a furnace body for heat treatment processing of mechanical parts, which has the following beneficial effects:
1. this be used for machine parts thermal treatment furnace body for processing, open the furnace body from the heating device in area, the closed door that opens and shuts, the motor drives and rotates platform and fixing device and rotate, and then make the threaded rod rotate and carry out thermal treatment, it is convenient that the threaded rod rotates and carries out thermal treatment, when avoiding the threaded rod to heat, because keep flat the inside at the heating furnace body with the threaded rod, thereby the threaded rod when making the heating easily is heated inhomogeneous influence to the effect that the threaded rod heated, the degree of consistency that the threaded rod was heated after the improvement heats, thereby avoid influencing the hardness of threaded rod because the threaded rod is heated inhomogeneously, improve the effect after the threaded rod thermal treatment, increase the hardness of threaded rod, reduce the threaded rod because it causes the threaded rod fragile to be heated inhomogeneously.
2. This be used for machine parts heat treatment furnace body for processing, open the heat dissipation fan and make the heat dissipation fan rotate, accelerate the water in the water tank and give off to reduce the temperature of motor, conveniently accelerate the flow speed of storehouse inside air down, and then reduce the inside temperature in storehouse, conveniently protect the device of storehouse inside down, avoid storehouse temperature too high down, and then influence the normal use of device, improve the life to storehouse inside device down.
3. This be used for machine parts thermal treatment furnace body for processing, through the setting of cooling tube, the heat that the convenience produced the motor absorbs, and then reduces the temperature that the motor produced when the operation, avoids because the temperature that the furnace body produced influences the motor, and then influences the life of motor, the influence that does not receive the temperature of protection motor, the life of extension motor.
4. This be used for machine parts thermal treatment furnace body for processing, during the inside of advancing the threaded rod card into the centre gripping arm, thereby stimulate the spring, make two centre gripping arms rotate through the second connecting rod, because dislocation is put about two centre gripping arms, and then make two centre gripping arms rotate around the second connecting rod, it is fixed that convenient centre gripping is carried out to the threaded rod of equidimension not, avoid the centre gripping arm can not carry out the centre gripping according to the thickness degree of threaded rod, the effect of device when using has been reduced, avoid single centre gripping threaded rod, the adjustment nature of device is improved, make things convenient for the workman to fix according to the threaded rod of difference, the practicality of device has been increased.
5. This be used for machine parts furnace body for thermal treatment processing, open the motor, make the motor rotate, and then make and drive first carousel and lug and rotate, make the lug at the internal rotation of second recess, and then make the second carousel carry out intermittent type formula and rotate, conveniently drive the rotation platform and carry out intermittent type formula and rotate, the work efficiency when improving the threaded rod and carrying out thermal treatment, the life of extension motor, reduce the manufacturing cost of mill, avoid because the long-term back and forth movement that carries on of motor, influence the efficiency of motor when using.
Drawings
FIG. 1 is a schematic structural view of a furnace body for heat treatment of mechanical parts according to the present invention;
FIG. 2 is a schematic view of the internal structure of a furnace body for heat treatment of mechanical parts according to the present invention;
FIG. 3 is a schematic cross-sectional view of a furnace body for heat treatment of mechanical parts according to the present invention;
FIG. 4 is a schematic view of the internal structure of the clamp arm according to the present invention;
FIG. 5 is an enlarged view of A in FIG. 2 according to the present invention.
In the figure: 1 supporting leg, 2 heat dissipation fans, 3 water tanks, 4 furnace bodies, 5 opening and closing doors, 6 heat insulation boards, 7 rotating tables, 8 first connecting rods, 9 supporting plates, 10 air holes, 11 supporting rods, 12 motors, 13 cooling pipes, 14 first rotating discs, 15 second rotating discs, 16 transmission rods, 17 clamping arms, 18 first grooves, 19 second connecting rods, 20 springs, 21 baffles, 22 second grooves and 23 bumps.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the invention provides a furnace body for heat treatment processing of mechanical parts, comprising a furnace body 4, wherein the bottom of the furnace body 4 is fixedly connected with supporting legs 1, the inside of the furnace body 4 is provided with an opening and closing door 5, the inside of the furnace body 4 is fixedly connected with a supporting plate 9, the bottom of the supporting plate 9 is provided with a heat insulation plate 6, the heat insulation plate 6 is of a conventional structure and is convenient for isolating heat generated by the furnace body 4, the surface of the furnace body 4 is provided with a heat radiation fan 2, the heat radiation fan 2 is of a conventional structure, the inner bottom wall of the furnace body 4 is fixedly provided with a water tank 3, the top of the water tank 3 is provided with air vents 10, the inner bottom wall of the furnace body 4 is fixedly provided with a motor 12, the surface of the motor 12 is provided with a cooling pipe 13, the condensing pipe 13 is of a conventional structure, so as to avoid that the temperature generated by the furnace body 4 affects the motor 12 and further affects the service life of the motor 12, through the arrangement of the cooling pipe 13, the heat generated by the motor 12 can be conveniently absorbed, so that the temperature generated by the motor 12 during operation can be reduced, the motor 12 is protected from being influenced by the temperature, the service life of the motor 12 is prolonged, the output end of the motor 12 is fixedly connected with the first turntable 14, the edge of the first turntable 14 is fixedly connected with the bump 23, and the inside of the furnace body 4 is provided with the rotating device;
the opening and closing door 5 is rotatably connected inside the furnace body 4, the heat insulation plate 6 is fixedly connected on the inner wall of the furnace body 4, the furnace body 4 is divided into an upper bin and a lower bin by the supporting plate 9, in order to avoid overhigh temperature of the lower bin, the heat dissipation fan 2 is opened to enable the heat dissipation fan 2 to rotate, water in the water tank 3 is accelerated to be dissipated, so that the temperature of the motor 12 is reduced, the flowing speed of air inside the lower bin is accelerated, the internal temperature of the lower bin is reduced, devices inside the lower bin are protected conveniently, normal use of the devices is influenced, the service life of the devices inside the lower bin is prolonged, the bumps 23 are semicircular bumps, the cooling pipes 13 are movably sleeved on the surface of the motor 12, and the cooling pipes 13 are threaded;
the rotating device comprises a supporting rod 11, the supporting rod 11 is fixedly connected with the inner bottom wall of the furnace body 4, a second rotary table 15 is arranged at the top of the supporting rod 11, a first groove 18 is formed in the edge of the second rotary table 15, a transmission rod 16 is fixedly connected to the top of the second rotary table 15, a rotating table 7 is fixedly connected to the top of the transmission rod 16, in order to avoid influencing the efficiency of the motor 12 in use due to long-term reciprocating motion of the motor 12, the motor 12 is opened to rotate the motor 12, the first rotary table 14 and the lug 23 are driven to rotate, the lug 23 rotates in the second groove 22, the second rotary table 15 is driven to rotate intermittently, the rotating table 7 is conveniently driven to rotate intermittently, the working efficiency of the threaded rod during heat treatment is improved, the service life of the motor 12 is prolonged, the production cost of a factory is reduced, and a fixing device is arranged at the top of the rotating table 7, in order to avoid the problem that when the threaded rod is heated, because the threaded rod is horizontally arranged in the heating furnace body, the heating effect of the threaded rod is easily influenced due to nonuniform heating of the threaded rod during heating, the heating device of the furnace body 4 is opened, the opening and closing door 5 is closed, the motor 12 drives the rotating table 5 and the fixing device to rotate, and further the threaded rod is rotated to carry out heat treatment, so that the threaded rod is conveniently rotated to carry out heat treatment, the uniformity of the heated threaded rod is improved, the influence of nonuniform heating of the threaded rod on the hardness of the threaded rod is avoided, the effect of the threaded rod after heat treatment is improved, the hardness of the threaded rod is increased, the threaded rod is prevented from being easily damaged due to nonuniform heating, the second turntable 15 is rotatably connected with the top of the supporting rod 11, the first groove 18 is a semicircular groove, and the size of the first groove 18 is larger than that of the lug 23, the convex block 23 is connected in a sliding manner inside the first groove 18, the transmission rod 16 penetrates through the heat insulation plate 6 and the support plate 9 to be fixedly connected with the rotating table 7, the transmission rod 16 is connected with the heat insulation plate 6 and the support plate 9 in a rotating manner, and the rotating table 7 is connected with the top of the support plate 9 in a rotating manner;
the fixing device comprises a first connecting rod 8, the first connecting rod 8 is fixedly connected with the top of the rotating table 7, a second groove 22 is formed in the edge of the rotating table 7, a clamping arm 17 is arranged on the lower end surface of the first connecting rod 8, a baffle 21 is arranged on the top of the clamping arm 17, a second connecting rod 19 is arranged inside the clamping arm 17, a spring 20 is fixedly connected inside the clamping arm 17, in order to avoid the situation that the clamping arm 17 cannot clamp according to the thickness degree of a threaded rod, the effect of the device in use is reduced, when the threaded rod is clamped into the clamping arm 17, the spring 20 is pulled, the two clamping arms 17 are rotated through the second connecting rod 19, due to the fact that the two clamping arms 17 are arranged in a staggered mode, the two clamping arms 17 rotate around the second connecting rod 19, the threaded rods with different sizes are conveniently clamped and fixed, and single clamping is avoided, the adjustability of the device is improved, workers can fix the device conveniently according to different threaded rods, the practicability of the device is improved, the second groove 22 is in a semicircular groove shape, the clamping arm 17 is connected with the surface of the first connecting rod 8 in a sliding mode, the baffle 21 is connected with the surface of the first connecting rod 8 in a fixed mode, the second connecting rod 19 is connected with the clamping arm 17 in an internal rotating mode, and the second connecting rod 19 is connected with the rotating table 7 in a fixed mode.
The working principle is as follows:
a furnace body for machine part thermal treatment processing, when using
The method comprises the following steps that firstly, a heat dissipation fan 2 is turned on to enable the heat dissipation fan 2 to rotate, water in a water tank 3 is quickly dissipated, so that the temperature of a motor 12 is reduced, the flowing speed of air in a lower bin is conveniently increased, the internal temperature of the lower bin is further reduced, devices in the lower bin are conveniently protected, the lower bin is prevented from being overhigh in temperature, the normal use of the devices is further influenced, and the service life of the devices in the lower bin is prolonged;
secondly, the cooling pipe 13 is arranged, so that heat generated by the motor 12 can be conveniently absorbed, the temperature generated by the motor 12 during operation is reduced, the influence of the temperature generated by the furnace body 4 on the motor 12 is avoided, the service life of the motor 12 is further influenced, the motor 12 is protected from being influenced by the temperature, and the service life of the motor 12 is prolonged;
thirdly, when the threaded rod is clamped into the clamping arms 17, the spring 20 is pulled, so that the two clamping arms 17 rotate through the second connecting rod 19, the two clamping arms 17 are placed in a vertically staggered mode, and the two clamping arms 17 rotate around the second connecting rod 19, so that the threaded rods with different sizes can be clamped and fixed conveniently, the clamping arms 17 are prevented from being incapable of clamping according to the thickness degree of the threaded rods, the effect of the device in use is reduced, a single clamping threaded rod is avoided, the adjustability of the device is improved, workers can fix the device conveniently according to different threaded rods, and the practicability of the device is improved;
fourthly, the motor 12 is turned on, the motor 12 is rotated, the first rotary table 14 and the lug 23 are driven to rotate, the lug 23 rotates in the second groove 22, the second rotary table 15 rotates intermittently, the rotary table 7 is conveniently driven to rotate intermittently, the working efficiency of the threaded rod during heat treatment is improved, the service life of the motor 12 is prolonged, the production cost of a factory is reduced, and the influence on the efficiency of the motor 12 during use due to long-term reciprocating motion of the motor 12 is avoided;
fifthly, open furnace body 4 from the heating device of area, closed opening and closing door 5, motor 12 drives and rotates platform 5 and fixing device and rotate, and then make the threaded rod rotate and carry out the thermal treatment, it is convenient that the threaded rod rotates and carries out the thermal treatment, when avoiding the threaded rod to heat, because keep flat the inside at the heating furnace body with the threaded rod, thereby the threaded rod when making the heating easily is heated inhomogeneous influence to the effect of heating the threaded rod, improve the degree of consistency that the threaded rod is heated after heating, thereby avoid because the threaded rod is heated inhomogeneous to influence the hardness of threaded rod, improve the effect after the threaded rod thermal treatment, increase the hardness of threaded rod, reduce the threaded rod because it causes the threaded rod fragile to be heated inhomogeneous.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a be used for machine parts heat treatment furnace body for processing, includes furnace body (4), its characterized in that: the bottom of the furnace body (4) is fixedly connected with supporting legs (1), an opening and closing door (5) is arranged in the furnace body (4), a supporting plate (9) is fixedly connected in the furnace body (4), a heat insulation plate (6) is arranged at the bottom of the supporting plate (9), a heat dissipation fan (2) is arranged on the surface of the furnace body (4), a water tank (3) is fixedly arranged on the inner bottom wall of the furnace body (4), air holes (10) are formed in the top of the water tank (3), a motor (12) is fixedly arranged on the inner bottom wall of the furnace body (4), a cooling pipe (13) is arranged on the surface of the motor (12), a first rotary disc (14) is fixedly connected to the output end of the motor (12), a convex block (23) is fixedly connected to the edge of the first rotary disc (14), a rotating device is arranged in the furnace body (4), and comprises a supporting rod (11), the furnace body is characterized in that the supporting rod (11) is fixedly connected with the inner bottom wall of the furnace body (4), a second rotary table (15) is arranged at the top of the supporting rod (11), a first groove (18) is formed in the edge of the second rotary table (15), a transmission rod (16) is fixedly connected to the top of the second rotary table (15), a rotary table (7) is fixedly connected to the top of the transmission rod (16), a fixing device is arranged at the top of the rotary table (7) and comprises a first connecting rod (8), the first connecting rod (8) is fixedly connected to the top of the rotary table (7), a second groove (22) is formed in the edge of the rotary table (7), a clamping arm (17) is arranged on the lower end surface of the first connecting rod (8), a baffle plate (21) is arranged at the top of the clamping arm (17), a second connecting rod (19) is arranged inside the clamping arm (17), and a spring (20) is fixedly connected inside the clamping arm (17).
2. The furnace body for heat treatment processing of mechanical parts according to claim 1, wherein: the opening and closing door (5) is rotatably connected inside the furnace body (4), the heat insulation plate (6) is fixedly connected on the inner wall of the furnace body (4), the furnace body (4) is divided into an upper bin and a lower bin by the support plate (9), the bump (23) is in a semicircular bump shape, the cooling pipe (13) is movably sleeved on the surface of the motor (12), and the cooling pipe (13) is in a threaded shape.
3. The furnace body for heat treatment processing of mechanical parts according to claim 1, wherein: the second rotating disc (15) is rotatably connected to the top of the supporting rod (11), the first groove (18) is a semicircular groove, and the protruding block (23) is connected to the inside of the first groove (18) in a sliding mode.
4. The furnace body for heat treatment processing of mechanical parts according to claim 1, wherein: the transmission rod (16) penetrates through the heat insulation plate (6) and the support plate (9) to be fixedly connected with the rotating platform (7), the transmission rod (16) is rotatably connected with the heat insulation plate (6) and the support plate (9), and the rotating platform (7) is rotatably connected with the top of the support plate (9).
5. The furnace body for heat treatment processing of mechanical parts according to claim 1, wherein: the shape of the second groove (22) is a semicircular groove, the clamping arm (17) is connected with the surface of the first connecting rod (8) in a sliding mode, and the baffle (21) is fixedly connected with the surface of the first connecting rod (8).
6. The furnace body for heat treatment processing of mechanical parts according to claim 1, wherein: the second connecting rod (19) is rotatably connected inside the clamping arm (17), and the second connecting rod (19) is fixedly connected to the top of the rotating table (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010783978.5A CN111961828B (en) | 2020-08-06 | 2020-08-06 | Furnace body for heat treatment processing of mechanical parts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010783978.5A CN111961828B (en) | 2020-08-06 | 2020-08-06 | Furnace body for heat treatment processing of mechanical parts |
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| CN111961828A CN111961828A (en) | 2020-11-20 |
| CN111961828B true CN111961828B (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010783978.5A Active CN111961828B (en) | 2020-08-06 | 2020-08-06 | Furnace body for heat treatment processing of mechanical parts |
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| CN210127256U (en) * | 2019-06-28 | 2020-03-06 | 路冰 | Pin shaft quenching machining is with formula feed mechanism that can lower temperature |
| CN210394466U (en) * | 2019-09-09 | 2020-04-24 | 扬州竹佑热处理有限公司 | Pipe fitting heat treatment placing frame |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207227478U (en) * | 2017-09-02 | 2018-04-13 | 上海奉贤钢管厂有限公司 | A kind of annealing furnace for facilitating turning of work piece |
| CN107612221A (en) * | 2017-09-29 | 2018-01-19 | 江苏新旭磁电科技有限公司 | The heat abstractor of motor |
| KR20190130942A (en) * | 2018-05-15 | 2019-11-25 | (주)넥스이앤에스 | Atmospheric gas sealing apparatus and pressure control method |
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| CN111961828A (en) | 2020-11-20 |
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