CN116590512B - Vacuum quenching furnace for broach - Google Patents
Vacuum quenching furnace for broach Download PDFInfo
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- CN116590512B CN116590512B CN202310626989.6A CN202310626989A CN116590512B CN 116590512 B CN116590512 B CN 116590512B CN 202310626989 A CN202310626989 A CN 202310626989A CN 116590512 B CN116590512 B CN 116590512B
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- lifting
- furnace
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- 230000000171 quenching effect Effects 0.000 title claims abstract description 75
- 238000010791 quenching Methods 0.000 title claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 104
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 19
- 238000005452 bending Methods 0.000 claims description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
Landscapes
- 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 discloses a vacuum quenching furnace of a broach, which comprises a heating furnace, a water quenching box, a furnace body and a lifting device, wherein a feed door is arranged on the furnace body, and an air inlet hole and an air outlet hole are formed in the feed door; the air inlet is connected with a nitrogen tank through an air pump, and the air outlet is connected with an exhaust fan; a water pushing component is arranged on one side of the water quenching tank, and a cooling tank is arranged on the other side of the water quenching tank, and the water pushing component can push cold water from one side to the middle of the water quenching tank so as to replace hot water in the middle of the water quenching tank and push the hot water into the cooling tank; the cooling box is internally provided with the liquid nitrogen tank, one end of the liquid nitrogen pipe is connected with the liquid nitrogen pump, and the other end of the liquid nitrogen pipe is connected with the nitrogen tank.
Description
Technical Field
The invention relates to the technical field of vacuum quenching furnaces, in particular to a vacuum quenching furnace of a broach.
Background
The vacuum quenching furnace is suitable for solution treatment and aging treatment of large and medium vacuum product parts. The vacuum high-pressure gas quenching furnace is very advanced vacuum heat treatment equipment, and the excellent performance and unique design of the vacuum high-pressure gas quenching furnace provide the characteristics of wide application to vacuum bright gas quenching, annealing, sintering of magnetic materials, rapid cooling and the like of high-precision parts made of alloy materials such as high-speed steel, die steel, stainless steel, alloy steel, titanium alloy and the like; the broach is generally placed in the frame in a centralized manner during quenching, the frame is placed in a quenching furnace and then heated, and then the heated cutter with the frame is integrally placed in water for quenching.
In order to increase the hardness of the broach, water quenching is generally adopted during quenching, namely, the broach is heated to a certain temperature in a vacuum quenching furnace and then kept for a period of time, and then a furnace door is quickly opened and placed in water, and the existing vacuum water quenching furnace has the following defects:
when the broach is taken out of the quenching furnace and placed in the water tank, a certain transmission distance is provided, and at the moment, the broach is contacted with air, so that certain parts of the broach are easily oxidized, and the quality of the quenched tool is influenced;
the circulation efficiency of water in the existing water tank is lower, when the whole frame is immersed in water, the bottom of the frame is contacted with water, and the surface water is quickly heated, so that the temperature of a cutter at the upper layer of the frame is higher during water quenching, and the quality of water quenching is affected.
Disclosure of Invention
The invention provides a vacuum quenching furnace for a broach, which aims at the defects in the prior art.
In order to solve the technical problems, the invention is solved by the following technical scheme: a vacuum quenching furnace of a broach comprises a heating furnace, a water quenching box, a furnace body and a lifting device.
In the above scheme, preferably, a feeding door is arranged on the furnace body, and an air inlet hole and an air outlet hole are arranged on the feeding door;
the air inlet is connected with a nitrogen tank through an air pump, and the air outlet is connected with an exhaust fan;
a water pushing component is arranged on one side of the water quenching tank, and a cooling tank is arranged on the other side of the water quenching tank, and the water pushing component can push cold water from one side to the middle of the water quenching tank so as to replace hot water in the middle of the water quenching tank and push the hot water into the cooling tank;
the cooling box is internally provided with a liquid nitrogen tank, one end of the liquid nitrogen pipe is connected with a liquid nitrogen pump, and the other end of the liquid nitrogen pipe is connected with the nitrogen tank.
In the above scheme, preferably, the water pushing assembly comprises a water pushing tank, a pushing plate and an electric push rod, wherein the pushing plate is slidably arranged in the water pushing tank, the pushing plate divides the water pushing tank into a storage tank and a driving tank, the electric push rod is arranged in the driving tank, and the electric push rod is fixedly connected with the pushing plate.
In the above scheme, preferably, a sealing door is arranged between the heating furnace and the water quenching tank, a door opening cylinder is arranged outside the furnace body, the sealing door is connected with the door opening cylinder through a connecting rod, and a driving plate fixedly connected with the connecting rod is arranged at the piston end of the door opening cylinder.
In the above scheme, preferably, the water quenching tank is provided with a first tank body connected with the water pushing tank and a second tank body connected with the cooling tank, the first tank body and the second tank body are provided with lifting plates, and the water quenching tank is provided with lifting cylinders connected with the lifting plates.
In the above scheme, preferably, the lifting device comprises a lifting frame, a winch and a pull rope, wherein a plurality of guide rods matched with the lifting frame are arranged in the furnace body, one end of the pull rope is connected with the lifting frame, and the other end of the pull rope is connected with the winch.
In the above scheme, preferably, the winch comprises a winch barrel, a speed measuring switch matched with the winch barrel is arranged on the water pushing tank, and the speed measuring switch is used for calculating the rotating speed of the winch barrel.
In the above scheme, preferably, a driving motor for driving the push rod to ascend is arranged on the electric push rod, and the driving motor is connected with the speed measuring switch through the PLC.
In the above scheme, preferably, the liquid nitrogen pump, the air pump, the exhaust fan, the electric push rod, the door opening cylinder, the lifting cylinder and the winch are controlled by the PLC.
In the above scheme, preferably, the lifting frame comprises a lifting plate, and a plurality of holes are formed in the lifting plate for water supply.
In the above scheme, preferably, the nitrogen pipe is arranged in a serpentine shape.
The beneficial effects of the invention are as follows: according to the invention, the nitrogen circulation system is arranged between the heating furnace and the water quenching box, so that the heated cutter is protected by nitrogen to prevent oxidization when conveyed to the water quenching box, and meanwhile, hot water with the cross section is replaced by the water pushing component during water quenching, so that a better water quenching effect is achieved, and the quenching effect and quality of the cutter are greatly improved.
Drawings
Fig. 1 is a schematic diagram of a front view structure of the present invention.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description: referring to fig. 1, a vacuum quenching furnace for broaching comprises a heating furnace 1, a water quenching tank 2, a furnace body 3 and a lifting device, wherein the heating furnace 1 is arranged at the top of the furnace body 3, the water quenching tank 2 is arranged at the bottom of the furnace body 3, a sealing door 31 is arranged between the heating furnace 1 and the water quenching tank 2, when the sealing door 31 is closed, the heating furnace 1 is internally heated, and the air or parts outside the furnace are not damaged, so that the vacuum quenching furnace is an existing sealing structure of the quenching furnace, and the prior sealing structure is not repeated.
The sealing door 31 is arranged at the bottom of the heating furnace 1 in a transversely sliding manner, a sealing groove matched with the sealing door 31 is formed in the heating furnace 1, one side of the sealing door 31 is connected with a connecting rod 33, the connecting rod 33 extends outwards to fixedly provide a driving plate 34, a door opening cylinder 32 is fixedly arranged on the outer wall of the furnace body 3, the piston end of the door opening cylinder 32 is fixedly connected with the driving plate 34, namely the door opening cylinder 32 can drive the sealing door 31 to be opened, and therefore the cutter frame can be placed into the heating furnace 1 or taken out from the heating furnace 1.
The lifting device comprises a lifting frame 51, a winch 52 and a pull rope 53, a plurality of guide rods 54 which are arranged in parallel are fixedly arranged on the right side wall in the furnace body 3, 2 guide rods 54 are preferred, the lifting frame 51 is arranged on the guide rods 54 in a sliding mode, the lifting frame 51 comprises a lifting plate 61 and a plurality of holes 62 formed in the lifting plate 61, one end of the pull rope 53 is fixed with the lifting frame 51, the other end of the pull rope 53 penetrates through the wall of the furnace body 3 and then is connected with the winch 52, after the winch 52 is started, the lifting frame 51 can be upwards or downwards displaced, and a plurality of pulleys matched with the pull rope 53 are arranged on the furnace body 3, so that the pull rope 53 is lifted more smoothly.
The winch 51 comprises a winch drum 55, the pull rope 53 is fixed on the winch drum 55, the winch 52 drives the winch drum 55 to rotate clockwise or anticlockwise through a motor reducer, so that the lifting frame 51 can slide upwards or downwards, the left side wall body of the furnace body 3 is provided with the feeding door 4, the feeding door 4 can be opened manually, namely, a hinge or a hinge is arranged on one side of the door to overturn, when the furnace is used, the feeding door 4 is opened, the winch 51 is driven to enable the lifting plate 61 to be located at a position corresponding to the feeding door, then a material frame with a cutter is placed on the lifting plate 61, the winch 51 is driven to continue to lift upwards, meanwhile, the sealing door 31 is opened, then the material frame is placed in the heating furnace 1, an automatic mechanical clamping jaw can be arranged in the heating furnace 1 to clamp the material frame, the winch 51 is reversed to enable the lifting frame 51 to descend, and then the sealing door 31 and the feeding door 4 are closed to heat the cutter in the heating furnace 1.
The feeding door 4 is provided with an air inlet hole 5 and an air outlet hole 6 communicated with the inner cavity of the furnace body 3, the air inlet hole 5 is connected with a nitrogen tank 8 through an air pump 7, the air outlet hole 6 is connected with an exhaust fan 9, after the heating of a cutter in the heating furnace 1 is completed, a lifting frame 51 is upwards displaced, at the moment, the air pump 7 is electrified to charge nitrogen in the nitrogen tank 8 into a connecting cavity of the heating furnace 1 and the water quenching box 2 from the air inlet hole 5, and meanwhile, the exhaust fan 9 is acted to pump out impurity air inside from the air outlet hole 6, the air inlet hole 5 is positioned above the air outlet hole 6, so that the nitrogen is charged into the whole connecting cavity to form gas protection, and then the sealing door 31 is opened to enable the lifting frame 51 to enter the heating furnace 1 to take out a material frame, so that the material frame is protected by the nitrogen when entering the connecting cavity.
As shown in fig. 1, the right side of the water quenching tank 2 is provided with a push-out assembly, the left side is provided with a cooling tank 10, the push-out assembly can push cold water from one side to the middle of the water quenching tank 2 so as to replace hot water in the middle of the water quenching tank 2 and push the hot water into the cooling tank 10, specifically, the push-out assembly comprises a push-out tank 21, a push plate 22 and an electric push rod 23, the push plate 22 is slidably arranged in the push-out tank 21, the push plate 22 divides the push-out tank 21 into a storage tank 24 and a driving tank 25, the storage tank 24 is positioned above the push plate 22, normal-temperature cold water is arranged in the storage tank 24, namely cold water with a temperature of 20-30 ℃ and a proper temperature for quenching a cutter, the electric push rod 23 is arranged in the driving tank 25, the push end of the electric push rod 23 is fixedly connected with the push plate 22, the bottom of the electric push rod 23 is fixedly arranged at the bottom of the driving tank 25, and a driving motor 57 is arranged on the electric push rod 23, and the driving motor 57 can drive the rod end of the push rod to slide upwards or downwards so as to enable the push plate 22 to move.
The water quenching box 2 is provided with a first groove 41 connected with the water pushing box 21 and a second groove 42 connected with the cooling box 10, the first groove 41 and the second groove 42 are provided with lifting plates 43, the water quenching box 2 is provided with lifting cylinders 44 connected with the lifting plates 43, the lifting plates 43 separate the first groove 41 and the second groove 42 from each other initially, so that water in the water quenching box 2 is prevented from leaking from two sides, when a heated cutter material frame enters the water surface of the water quenching box 2 along with the lifting frame 51, the lifting cylinders 44 drive the lifting plates 43 to slide downwards, so that the grooves on the two sides are opened, then the electric push rod 23 starts to push the push plate 22 upwards, cold water in the storage box 24 is transversely pushed to the center of the water quenching box 2 from right to left, and water heated by the cutter material frame in the water quenching box 2 is pushed into the cooling box 10 from the center.
Be equipped with liquid nitrogen pipe 11 in the cooling tank 10, liquid nitrogen pipe 11 one end is connected with liquid nitrogen pump 12, and the other end links to each other with nitrogen gas jar 8, pushes away the cooling tank 10 in the back again by the center when the water of being heated by cutter material frame in the water quenching case 2, starts liquid nitrogen pump 12, cools off the water in the cooling tank 10 through liquid nitrogen pipe 11 with liquid nitrogen, and the use next time of being convenient for, simultaneously, liquid nitrogen is in the heat dissipation vaporization entering nitrogen gas jar 8 behind liquid nitrogen pipe 11, liquid nitrogen pipe 11 is the preferred snakelike bending setting.
The water pushing tank 21 is provided with a speed measuring switch 56 matched with the winding drum 55, the speed measuring switch 56 is used for calculating the rotating speed of the winding drum 55, the driving motor 57 is connected with the speed measuring switch 56 through a PLC controller, namely, when the rotating speed of the winding drum 55 is increased, the speed of the surface lifting frame 51 entering the water quenching tank 2 is increased, and the water changing speed of the water pushing assembly is increased at the moment, so that the optimal quenching effect of the cutter is ensured, namely, after the speed of the winding drum 55 is increased, the driving motor 57 on the electric push rod 23 is increased, and the upward sliding speed of the push plate 22 is increased.
The liquid nitrogen pump 12, the air pump 7, the exhaust fan 9, the electric push rod 23, the door opening air cylinder 32, the lifting air cylinder 44 and the winch 52 are controlled by a PLC controller, so that the automatic control of the whole quenching furnace is realized.
A method of using a vacuum quenching furnace for a broach as described above: when the automatic feeding device is used, the feeding door 4 is opened, then the cutter material frame is placed on the lifting frame 51, then the feeding door 4 is closed, the lifting frame 51 is driven by the winch 52 to lift upwards, meanwhile, the sealing door 31 is opened by the door opening air cylinder 32, then the lifting frame 51 enters the heating furnace 1, and the cutter material frame is placed in the heating furnace 1 to be clamped;
then the lifting frame 51 slides downwards to reset, the sealing door 31 is driven to be closed by the door opening cylinder, the vacuum generator vacuumizes the heating furnace 1 and then heats the heating furnace, after heating is finished, the air pump 7 starts to suck nitrogen from the nitrogen pipe 8 and blows the nitrogen into the connecting cavity through the air inlet 5, and meanwhile the exhaust fan 9 sucks air in the connecting cavity, so that the nitrogen fills the whole cavity;
then the sealing door 31 is opened, then the lifting frame 51 is lifted upwards to place the cutter material frame on the lifting plate 61, the lifting frame 51 slides downwards, the cutter material frame is protected by nitrogen when passing through the connecting cavity, then the cutter material frame gradually enters the water quenching tank 2, at the moment, the lifting cylinder 44 drives the lifting plate 43 to descend to open the groove bodies on two sides, meanwhile, the electric push rod 23 in the water pushing assembly is matched with the pushing speed of the pushing plate 22 through the rotating speed of the lifting drum 55, cold water in the storage tank 24 is transversely pushed to the center of the cutter material frame to replace water heated at the center, and the water heated at the center moves leftwards into the cooling tank 10, so that the water contacted by the cutter material frame is always at a proper water temperature;
the water in the cooling tank 10 is cooled after the liquid nitrogen is pumped into the liquid nitrogen pipe 11 by the liquid nitrogen pump 12, the liquid nitrogen is gasified into nitrogen after passing through the liquid nitrogen pipe 11 of the cooling tank 10 to supplement the nitrogen tank 8, and the cooled water in the cooling tank 10 can be refilled into the storage tank by adopting the water pump after the push plate 22 is reset.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The utility model provides a vacuum quenching furnace of broach, includes heating furnace (1), water quenching case (2), furnace body (3) and hoisting device, its characterized in that: a feed door (4) is arranged on the furnace body (3), and an air inlet hole (5) and an air outlet hole (6) are arranged on the feed door (4);
the air inlet (5) is connected with a nitrogen tank (8) through an air pump (7), and the air outlet (6) is connected with an exhaust fan (9);
one side of the water quenching tank (2) is provided with a water pushing component, the other side of the water quenching tank is provided with a cooling tank (10), and cold water can be pushed to the middle of the water quenching tank (2) from one side by the water pushing component so as to replace hot water in the middle of the water quenching tank (2) and push the hot water into the cooling tank (10);
a liquid nitrogen pipe (11) is arranged in the cooling box (10), one end of the liquid nitrogen pipe (11) is connected with a liquid nitrogen pump (12), and the other end of the liquid nitrogen pipe is connected with a nitrogen tank (8);
the water pushing assembly comprises a water pushing tank (21), a pushing plate (22) and an electric push rod (23), wherein the pushing plate (22) is slidably arranged in the water pushing tank (21), the pushing plate (22) divides the water pushing tank (21) into a storage tank (24) and a driving tank (25), the electric push rod (23) is arranged in the driving tank (25), and the electric push rod (23) is fixedly connected with the pushing plate (22);
the lifting device comprises a lifting frame (51), a winch (52) and a pull rope (53), wherein one end of the pull rope (53) is connected with the lifting frame (51), and the other end of the pull rope is connected with the winch (52);
the winch (52) comprises a winch drum (55), a speed measuring switch (56) matched with the winch drum (55) is arranged on the water pushing tank (21), and the speed measuring switch (56) is used for calculating the rotating speed of the winch drum (55);
the electric push rod (23) is provided with a driving motor (57) for driving the push rod to ascend, and the driving motor (57) is connected with a speed measuring switch (56) through a PLC controller;
after the speed of the winch drum (55) is increased, the speed of a driving motor (57) on the electric push rod (23) is increased, so that the upward sliding speed of the push plate (22) is increased;
a sealing door (31) is arranged between the heating furnace (1) and the water quenching tank (2), a door opening cylinder (32) is arranged outside the furnace body (3), the sealing door (31) is connected with the door opening cylinder (32) through a connecting rod (33), and a driving plate (34) fixedly connected with the connecting rod (33) is arranged at the piston end of the door opening cylinder (32);
the water quenching device is characterized in that a first groove body (41) connected with the water pushing tank (21) and a second groove body (42) connected with the cooling tank (10) are arranged on the water quenching tank (2), lifting plates (43) are arranged on the first groove body (41) and the second groove body (42), and lifting cylinders (44) connected with the lifting plates (43) are arranged on the water quenching tank (2);
the liquid nitrogen pump (12), the air pump (7), the exhaust fan (9), the electric push rod (23), the door opening air cylinder (32), the lifting air cylinder (44) and the winch (52) are controlled by a PLC.
2. A vacuum quenching furnace for a broach according to claim 1, wherein: a plurality of guide rods (54) matched with the lifting frames (51) are arranged in the furnace body (3).
3. A vacuum quenching furnace for a broach according to claim 1, wherein: the lifting frame (51) comprises a lifting plate (61), and a plurality of holes (62) are formed in the lifting plate (61) for water to pass through.
4. A vacuum quenching furnace for a broach according to claim 1, wherein: the liquid nitrogen pipe (11) is arranged in a serpentine bending mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310626989.6A CN116590512B (en) | 2023-05-31 | 2023-05-31 | Vacuum quenching furnace for broach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310626989.6A CN116590512B (en) | 2023-05-31 | 2023-05-31 | Vacuum quenching furnace for broach |
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| Publication Number | Publication Date |
|---|---|
| CN116590512A CN116590512A (en) | 2023-08-15 |
| CN116590512B true CN116590512B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310626989.6A Active CN116590512B (en) | 2023-05-31 | 2023-05-31 | Vacuum quenching furnace for broach |
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| CN204661759U (en) * | 2015-04-28 | 2015-09-23 | 山东汇锋传动股份有限公司 | Process furnace and the integrated Two-way Cycle refrigerating unit of tempering stove |
| CN107167488A (en) * | 2017-05-09 | 2017-09-15 | 中国原子能科学研究院 | Reactor cladding materials pyrogenic steam oxidation quenching experimental apparatus and its test method |
| CN207933500U (en) * | 2018-01-02 | 2018-10-02 | 北京机电研究所有限公司 | A kind of ultra-large type well formula joint glowing furnace unit with nitrogen protection |
| CN207877796U (en) * | 2018-03-14 | 2018-09-18 | 东莞市瑞赫曼模具材料有限公司 | A kind of vacuum hardening furnace apparatus with nitrogen automatic cycle retracting device |
| CN108728612A (en) * | 2018-08-27 | 2018-11-02 | 江苏丰东热技术有限公司 | A kind of salt bath furnace doffer and salt bath heating stove |
| CN209039531U (en) * | 2018-10-24 | 2019-06-28 | 瑞商(天津)科技有限公司 | One kind being based on tool sharpening quenching quenching case |
| CN211758113U (en) * | 2019-03-04 | 2020-10-27 | 航宇智造（北京）工程技术有限公司 | Automatic feeding and discharging module for metal pipe gas bulging and rapid cooling strengthening process |
| JP2021059767A (en) * | 2019-10-08 | 2021-04-15 | 大同プラント工業株式会社 | Quench treatment apparatus and quench treatment method |
| WO2021208543A1 (en) * | 2020-04-13 | 2021-10-21 | 南京长江工业炉科技集团有限公司 | Multifunctional quenching device |
| CN111944963A (en) * | 2020-07-17 | 2020-11-17 | 洛阳耿工金属科技有限公司 | Cooling process and system for liquid quenching medium |
| CN214361540U (en) * | 2021-02-07 | 2021-10-08 | 大连爱信金属制品有限公司 | Heat insulation protection device for reducing vacuum quenching deformation |
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