CN212191233U - Sintering furnace for powder metallurgy parts - Google Patents
Sintering furnace for powder metallurgy parts Download PDFInfo
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- CN212191233U CN212191233U CN202020991089.3U CN202020991089U CN212191233U CN 212191233 U CN212191233 U CN 212191233U CN 202020991089 U CN202020991089 U CN 202020991089U CN 212191233 U CN212191233 U CN 212191233U
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Abstract
The utility model relates to a fritting furnace, concretely relates to fritting furnace of powder metallurgy spare. The sintering furnace comprises a cooling groove, a hearth, an isolation groove and a feeding and discharging support frame, wherein the hearth is arranged at one end of the cooling groove, the isolation groove is arranged at the other end of the cooling groove, the feeding and discharging support frame is arranged on one side of the cooling groove, and the feeding and discharging support frame is respectively connected with the hearth and the isolation groove. The sintering furnace pushes the powder metallurgy part green body to enter the hearth for sintering through the matching of the bearing plate and the hydraulic cylinder, so that the powder metallurgy part green body is not easy to turn over, the powder metallurgy part green body can be uniformly heated, and the powder metallurgy part green body cannot be left in the hearth; make oxygen can not get into through sealed flashboard cooperation isolation tank and support in groove and the furnace, simultaneously through the abundant burning of oxygen, and then make powder metallurgy spare body can not by the oxidation in sintering process, when having solved current fritting furnace and using the wire net as the conveyer belt, easily produce and turn on one's side, and influence the finished product quality, easily make the powder metallurgy spare body simultaneously and easily stay the problem in the furnace.
Description
Technical Field
The utility model relates to a fritting furnace, concretely relates to fritting furnace of powder metallurgy spare.
Background
The gear and the bush are manufactured by a pressing process, wherein a plurality of metal powders are proportioned according to a proportion, the raw material powders are mixed after the proportioning is finished, the uniformly mixed metal powders are pressed by a forming machine to obtain a rough blank, the rough blank is sintered to harden a blank, and the hardened blank is finished by a finishing machine to make the blank reach the size required by the process to obtain a finished product.
The sintering process generally adopts a sintering furnace for sintering, and the existing sintering furnace mostly adopts a steel wire mesh woven by steel wires as a conveying belt and is matched with a roller shaft to convey stacked powder metallurgy piece blanks into a hearth. When the steel wire mesh is used as a conveyor belt, the temperature range from the inlet end to the outlet end of the hearth is normal temperature to 1100 ℃, the temperature acting on the steel wire mesh is gradually reduced from the outlet end to the inlet end, so that the temperature on the steel wire mesh is uneven, the steel wire mesh is easy to be pulled and deformed, stacked powder metallurgy part blanks are easy to turn on one side when the steel wire mesh is deformed, and the stacked powder metallurgy part blanks are uneven in stacking after turning on one side and uneven in heating, so that the quality of finished products is easy to influence; meanwhile, a part of powder metallurgy part blank is easy to separate from the steel wire mesh conveyor belt after being turned over and is left in the hearth and is not easy to take out, so that improvement is needed.
Disclosure of Invention
The utility model aims at: aiming at the defects of the prior art, the sintering furnace for the powder metallurgy part is not easy to cause the powder metallurgy part blank to turn on one side, and the powder metallurgy part blank can not be left in a hearth.
The technical scheme of the utility model is that:
a sintering furnace for powder metallurgy parts comprises a cooling groove, a hearth, an isolation groove and a feeding and discharging support frame, wherein the hearth is arranged at one end of the cooling groove, the isolation groove is arranged at the other end of the cooling groove, the feeding and discharging support frame is arranged at one side of the cooling groove, and the feeding and discharging support frame is respectively connected with the hearth and the isolation groove; the method is characterized in that: bearing plates are respectively arranged in the cooling groove, the hearth, the isolation groove and the feeding and discharging support frame, and supporting plates are movably arranged on the bearing plates through cushion blocks; a feeding hydraulic cylinder is arranged on the feeding and discharging support frame corresponding to the hearth; an isolation groove hydraulic cylinder is arranged on the isolation groove corresponding to the feeding and discharging support frame; the cooling tank is provided with a cooling tank hydraulic cylinder corresponding to the isolation tank.
The cooling groove consists of an outer shell, a support groove and a support groove support rod, the support groove is sleeved in the outer shell, and the support groove is fixedly connected with the outer shell through the support groove support rod; the supporting groove is respectively communicated with the hearth and the isolating groove.
And a sealing shell is fixedly arranged on the outer shell on one side of the isolation groove, a sealing flashboard is inserted in the sealing shell, and the sealing flashboard is respectively connected with the sealing shell and the support groove in a sliding and sealing manner.
The top of the sealing shell is provided with a sealing hydraulic cylinder, a piston rod of the sealing hydraulic cylinder extends into the sealing shell, and the end of the piston rod of the sealing hydraulic cylinder extending into the sealing shell is fixedly connected with the sealing flashboard.
The outer shell and the supporting groove are arranged at intervals, and a water circulation cavity is arranged between the outer shell and the supporting groove; the shell body end of furnace one side is provided with the inlet tube, and the shell body end of sealed pneumatic cylinder one side is provided with the outlet pipe, and outlet pipe and inlet tube communicate with the hydrologic cycle chamber respectively.
An isolation hydraulic cylinder is installed on the isolation groove on one side of the feeding and discharging support frame through a support, an isolation flashboard is fixedly installed at the end of a piston rod of the isolation hydraulic cylinder, and the isolation flashboard is connected with the isolation groove in a sliding and sealing mode through an isolation groove slideway.
A protective gas pipe is arranged at one end of the hearth, and a gas pipe is arranged on the hearth at one side of the protective gas pipe; an exhaust pipe is arranged at the end head of the other end of the hearth; temperature detection probes are uniformly distributed on the hearth between the gas pipe and the exhaust pipe.
The gas pipe extend to the inner side of the hearth, and a hearth sliding groove is arranged above the end of the gas pipe extending to the inner side of the hearth through a hearth supporting rod.
The gas pipe endotheca be equipped with the air hose, the air hose extends to the gas pipe outside, the air hose end that extends to the gas pipe outside is provided with a plurality of ventholes.
And in-place detection probes are respectively arranged on the feeding and discharging support frame, the cooling groove and the isolation groove.
The beneficial effects of the utility model reside in that:
the sintering furnace for the powder metallurgy part pushes the powder metallurgy part blank to enter the hearth for sintering through the matching of the bearing plates and the hydraulic cylinder, the bearing plates are not easy to pull and turn over, and therefore the powder metallurgy part blank can be uniformly heated and cannot be left in the hearth; through with the air hose suit in the gas pipe, in the combustion process, make the oxygen in the air fully burnt, make oxygen can not get into through sealed flashboard cooperation isolation groove simultaneously and support groove and furnace in, and then make powder metallurgy spare body can not be by the oxidation in sintering process, when having solved current fritting furnace and using the wire net as the conveyer belt, easily produce and turn on one's side, and influence the finished product quality, easily make the powder metallurgy spare body easily stay the problem in furnace simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the furnace chamber in the direction of A-A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the gas pipe of the present invention;
FIG. 4 is a schematic view of the structure of the isolation trench in the direction B-B in FIG. 1;
FIG. 5 is a schematic view of the cooling bath of FIG. 1 in the direction of C-C;
FIG. 6 is a schematic view of the cooling tank of FIG. 1 in a direction D-D;
fig. 7 is a schematic structural view of the sealing shutter of the present invention;
fig. 8 is a schematic structural view of the carrier tray of the present invention.
In the figure: 1. the device comprises a hearth, 2, an isolation groove, 3, a feeding and discharging support frame, 4, a protective gas pipe, 5, a gas pipe, 6, an air pipe, 7, an air outlet hole, 8, a hearth support rod, 9, a hearth sliding groove, 10, a temperature detection probe, 11, a support, 12, an isolation hydraulic cylinder, 13, an isolation flashboard, 14, an isolation groove sliding way, 15, an outer shell, 16, a support groove, 17, a support groove support rod, 18, a water circulation cavity, 19, a sealing shell, 20, a sealing flashboard, 21, a sealing hydraulic cylinder, 22, a water inlet pipe, 23, a water outlet pipe, 24, a bearing disc, 25, a cushion block, 26, a supporting plate, 27, a feeding hydraulic cylinder, 28, an isolation groove hydraulic cylinder, 29, a cooling groove hydraulic cylinder, 30, a sealing sleeve, 31, an in-place detection probe, 32.
Detailed Description
The sintering furnace for the powder metallurgy parts comprises a cooling tank, a hearth 1, an isolation tank 2 and a feeding and discharging support frame 3, wherein the hearth 1 is arranged at one end of the cooling tank, a protective gas pipe 4 is arranged at one end of the hearth 1, the hearth 1 is communicated with the cooling tank, when the sintering furnace works, protective gas (nitrogen) can be introduced into the hearth 1 through the protective gas pipe 4 to protect a workpiece 33 (powder metallurgy part blank) in the hearth 1 from being oxidized, and meanwhile, the cooling tank is sealed through the protective gas, so that the workpiece 33 cannot be oxidized in the cooling tank, and high-temperature gas cannot enter the cooling tank; a gas pipe 5 is arranged on the hearth 1 on one side of the protective gas pipe 4, an air pipe 6 is sleeved in the gas pipe 5, the air pipe 6 extends to the outer side of the gas pipe 5, a plurality of air outlet holes 7 are formed in the end of the air pipe 6 extending to the outer side of the gas pipe 5, and the air pipe 6 is sleeved in the gas pipe 5, so that when the gas is combusted, the gas wraps the air and is combusted, oxygen in the air is completely consumed, and therefore, a workpiece is not oxidized in the heating process of the workpiece 33; the gas pipe 5 extends to the inner side of the hearth 1, and a hearth chute 9 is arranged above the end of the gas pipe 5 extending to the inner side of the hearth 1 through a hearth supporting rod 8; the other end of furnace 1 is provided with blast pipe 32, and the equipartition has temperature detect probe 10 on furnace 1 between blast pipe 32 and the gas pipe 5 to detect the temperature in furnace 1, and then the flow of gas and air in control gas pipe 5 and the air pipe 6 and control the interior flame size of furnace 1 and control the temperature.
The other end of the cooling tank is provided with an isolation groove 2, one side of the cooling tank is provided with a feeding and discharging support frame 3, the feeding and discharging support frame 3 is respectively connected with the hearth 1 and the isolation groove 2, the feeding and discharging support frame 3 is used for feeding a workpiece 33 on the feeding and discharging support frame 3 so as to be sintered, and after sintering is completed, the workpiece is discharged on the feeding and discharging support frame 3; a support 11 is arranged on the isolation groove 2 on one side of the loading and unloading support frame 3, an isolation hydraulic cylinder 12 is fixedly arranged on the support 11, an isolation flashboard 13 is fixedly arranged at the end of a piston rod of the isolation hydraulic cylinder 12, isolation groove slideways 14 are respectively arranged on the isolation grooves 14 on the two sides of the isolation flashboard 13, and the isolation flashboard 13 is connected with the isolation groove 2 in a sliding and sealing manner through the isolation groove slideways 14; the effect of isolation groove 2 makes cooling bath and furnace 1 keep apart with the external world, and in ejection of compact process, takes a breath through isolation groove 2, makes during external oxygen can not get into cooling bath and furnace 1.
The cooling groove is composed of an outer shell 15, a supporting groove 16 and a supporting groove supporting rod 17, the supporting groove 16 is sleeved in the outer shell 15, the supporting groove supporting rod 17 is arranged between the supporting groove 16 and the outer shell 15, the supporting groove 16 is fixedly connected with the outer shell 15 through the supporting groove supporting rod 17, and the supporting groove 16 is respectively communicated with the hearth 1 and the isolation groove 2; the outer shell 15 and the supporting groove 16 are arranged at intervals, and a water circulation cavity 18 is arranged between the outer shell 15 and the supporting groove 16; a sealing shell 19 is fixedly arranged on the outer shell 15 at one side of the isolation groove 2, a sealing flashboard 20 is inserted in the sealing shell 19, and the sealing flashboard 20 is respectively connected with the sealing shell 19 and the supporting groove 16 in a sliding and sealing manner; a sealing hydraulic cylinder 21 is arranged at the top of the sealing shell 19, a piston rod of the sealing hydraulic cylinder 21 extends into the sealing shell 19, and the end of the piston rod of the sealing hydraulic cylinder 21 extending into the sealing shell 19 is fixedly connected with a sealing flashboard 20; the end of the outer shell 15 on one side of the hearth 1 is provided with a water inlet pipe 22, the end of the outer shell 15 on one side of the sealed hydraulic cylinder 21 is provided with a water outlet pipe 23, the water outlet pipe 23 and the water inlet pipe 22 are respectively communicated with the water circulation cavity 18, when the furnace works, cooling water is injected into the water circulation cavity 18 through the water inlet pipe 22, the cooling water in the water circulation cavity 18 is discharged through the water outlet pipe 23, so that the cooling water in the water circulation cavity 18 is circulated, the temperature in the supporting groove 16 is reduced, and workpieces in the supporting groove 16 are cooled.
Bearing discs 24 are respectively arranged in the supporting groove 16 of the cooling groove, the hearth 1, the isolation groove 2 and the loading and unloading supporting frame 3, supporting plates 26 are movably arranged on the bearing discs 24 through cushion blocks 25, when the furnace works, workpieces 33 are uniformly stacked on the supporting plates 26, the cushion blocks 25 are used for making the bottoms of the supporting plates 26 overhead, so that high-temperature gas can enter between the supporting plates 26 and the bearing discs 24, the supporting plates 26 and the workpieces 33 on the supporting plates 26 are heated by the bottoms of the supporting plates 26, the upper, lower, left, right, front and rear surfaces of the workpieces 33 can be heated, and the workpieces 33 can be heated uniformly; the bearing plates 24 are made of graphite, so that the bearing plates 24 have better high-temperature resistance, cannot deform at high temperature, cannot be pulled among the bearing plates 24, and cannot cause the workpiece 33 to turn over, therefore, the workpiece 33 can be uniformly heated and cannot be left in the hearth 1, and meanwhile, the bearing plates 24 made of graphite have smaller friction coefficient, so that the bearing plates 24 are easy to push to move; a feeding hydraulic cylinder 27 is arranged on the feeding and discharging support frame 3 corresponding to the hearth 1; an isolation groove hydraulic cylinder 28 is correspondingly arranged on the isolation groove 2 and the feeding and discharging support frame 3, and a piston rod of the isolation groove hydraulic cylinder 28 is connected with the isolation groove 2 in a sliding and sealing manner; a cooling tank hydraulic cylinder 29 is arranged on the outer shell 15 of the cooling tank corresponding to the isolation groove 2, and a piston rod of the cooling tank hydraulic cylinder 29 is respectively connected with the outer shell 15 and the support groove 16 in a sealing way through a sealing sleeve 30; and in-place detection probes 31 are respectively arranged on the feeding and discharging support frame 3, the cooling groove and the isolation groove 2.
The in-place detection probe 31 is respectively connected with a program controller (not shown, model number is Siemens S7-400 PLC), when in work, the in-place signal of the workpiece 33 is uploaded to the program controller, the isolation tank hydraulic cylinder 28, the cooling tank hydraulic cylinder 29, the feeding hydraulic cylinder 27, the protective air pipe 4, the gas pipe 5 and the air pipe 6 are respectively connected with the program controller, the isolation hydraulic cylinder 12, the sealing hydraulic cylinder 21, the isolation tank hydraulic cylinder 28, the cooling tank hydraulic cylinder 29, the feeding hydraulic cylinder 27, the protective air pipe 4, the gas pipe 5 and the air pipe 6 are respectively controlled by the program controller, wherein the isolation hydraulic cylinder 12, the sealing hydraulic cylinder 21, the isolation groove hydraulic cylinder 28 and the cooling groove hydraulic cylinder 29 are interlocked, that is, when the sealing hydraulic cylinder 21 closes the sealing gate plate 20, the isolating hydraulic cylinder 12 can open the isolating gate plate 13, and when the isolating hydraulic cylinder 12 closes the isolating gate plate 13, the sealing hydraulic cylinder 21 can open the sealing gate plate 20; when the isolation gate plate 13 is opened by the isolation hydraulic cylinder 12, the isolation groove hydraulic cylinder 28 can operate; when the seal gate 20 is opened by the seal cylinder 21, the cooling tank cylinder 29 can be operated.
When the sintering furnace of the powder metallurgy part works, a workpiece 33 is stacked on a supporting plate 26, the supporting plate 26 with the workpiece 33 is placed on a cushion block 25 on a bearing plate 24, the workpiece 33 is fed, in the feeding process of the workpiece 33, a protection air pipe 4 and an exhaust pipe 32 are opened through a program controller, the support groove 16 of a cooling groove and the hearth 1 are ventilated, oxygen in the hearth 1 and the support groove 16 is exhausted, after a period of ventilation is finished, namely after the ventilation in the hearth 1 is finished, the flow of the protection air in the protection air pipe 4 is controlled to be reduced through the program controller, a gas pipe 5 and an air pipe 6 are opened simultaneously, gas is ignited, the hearth 1 is preheated, when the gas pipe 5 and the air pipe 6 are opened, a water inlet pipe 22 and a water outlet pipe 23 are opened simultaneously to circulate cooling water in a circulating water cavity 18.
After the hearth 1 is preheated, the bearing disc 24 with the supporting plate 26 and the workpieces 33 is prevented from being pushed to the in-place detection probe 31 of the upper blanking support frame 3 one by one, when the bearing disc 24 is contacted with the in-place detection probe 31, the in-place detection probe 31 uploads a bearing disc in-place signal to a program controller, the program controller controls a feeding hydraulic cylinder 27 to work, the bearing disc 24 with the workpieces 33 is pushed to enter a hearth chute 9 of the hearth 1 from the upper blanking support frame 3 to enter the hearth 1, the workpieces 33 entering the hearth 1 slowly move to an outlet of the hearth 1 from an inlet of the hearth 1 under the action of the feeding hydraulic cylinder 27, and in the process, the temperature of the workpieces 33 gradually rises under the action of high-temperature gas to sinter the workpieces 33; the sintered workpiece 33 moves from the hearth 1 to the support groove 16 of the cooling groove and slowly moves to the in-place detection probe 31 of the cooling groove, and in the process that the workpiece 33 moves to the in-place detection probe 31 at the end of the cooling groove, the workpiece 33 in the support groove 16 is cooled under the action of the cooling water in the circulating water cavity 18; when the bearing disc 24 contacts with the in-place detection probe 31 at the end of the cooling groove, the in-place detection probe 31 at the end of the cooling groove uploads an in-place signal to the program controller, the program controller controls the sealing hydraulic cylinder 21 to open the sealing flashboard 20, after the sealing flashboard 20 is opened, the program controller controls the cooling groove hydraulic cylinder 29 to operate and pushes the bearing disc 24 to move into the isolation groove 2, further pushes the workpiece 33 into the isolation groove 2, when the workpiece 33 moves to the in-place detection probe 31 at the isolation groove 2, the bearing disc 24 contacts with the workpiece in-place detection probe 31 on the isolation groove 2, the program controller controls the sealing hydraulic cylinder 21 to close the sealing flashboard 20, after the sealing flashboard 20 is closed, the program controller controls the isolation hydraulic cylinder 12 to open the isolation flashboard 13, after the isolation flashboard 13 is opened, the program controller controls the isolation groove hydraulic cylinder 28 to act, and pushes the workpiece 33 to the blanking support frame 3, the work 33 is blanked on the blanking and loading support frame 3.
According to the sintering furnace for the powder metallurgy part, the bearing plates 24 are matched with the hydraulic cylinder to push the powder metallurgy part blank to enter the hearth 1 for sintering, the bearing plates 24 are not easy to pull and turn over, so that the powder metallurgy part blank can be uniformly heated, and the powder metallurgy part blank cannot be left in the hearth 1; through 6 suits of air pipe in the gas pipe 5, in the combustion process, make oxygen in the air fully burnt, make oxygen can not get into support groove 16 and furnace 1 in through sealed flashboard 20 cooperation isolation tank 2 simultaneously, and then make powder metallurgy spare body can not be by the oxidation in sintering process, when having solved current fritting furnace and using the wire net as the conveyer belt, easily produce and turn on one's side, and influence the finished product quality, easily make the powder metallurgy spare body easily stay the problem in furnace simultaneously.
Claims (8)
1. A sintering furnace for powder metallurgy parts comprises a cooling groove, a hearth (1), an isolation groove (2) and a feeding and discharging support frame (3), wherein the hearth (1) is arranged at one end of the cooling groove, the isolation groove (2) is arranged at the other end of the cooling groove, the feeding and discharging support frame (3) is arranged at one side of the cooling groove, and the feeding and discharging support frame (3) is respectively connected with the hearth (1) and the isolation groove (2); the method is characterized in that: bearing discs (24) are respectively arranged in the cooling groove, the hearth (1), the isolation groove (2) and the feeding and discharging support frame (3), and supporting plates (26) are movably arranged on the bearing discs (24) through cushion blocks (25); a feeding hydraulic cylinder (27) is arranged on the feeding and discharging support frame (3) corresponding to the hearth (1); an isolation groove hydraulic cylinder (28) is arranged on the isolation groove (2) corresponding to the feeding and discharging support frame (3); the cooling tank is provided with a cooling tank hydraulic cylinder (29) corresponding to the isolation tank (2).
2. The sintering furnace for powder metallurgy parts according to claim 1, wherein: the cooling groove consists of an outer shell (15), a supporting groove (16) and a supporting groove supporting rod (17), the supporting groove (16) is sleeved in the outer shell (15), and the supporting groove (16) is fixedly connected with the outer shell (15) through the supporting groove supporting rod (17); the supporting groove (16) is respectively communicated with the hearth (1) and the isolation groove (2).
3. The sintering furnace for powder metallurgy parts according to claim 2, wherein: a sealing shell (19) is fixedly arranged on the outer shell (15) at one side of the isolation groove (2), a sealing flashboard (20) is inserted in the sealing shell (19), and the sealing flashboard (20) is respectively connected with the sealing shell (19) and the support groove (16) in a sliding and sealing manner; the top of the sealing shell (19) is provided with a sealing hydraulic cylinder (21), a piston rod of the sealing hydraulic cylinder (21) extends into the sealing shell (19), and the end of the piston rod of the sealing hydraulic cylinder (21) extending into the sealing shell (19) is fixedly connected with the sealing flashboard (20).
4. The sintering furnace for powder metallurgy parts according to claim 2, wherein: the outer shell (15) and the supporting groove (16) are arranged at intervals, and a water circulation cavity (18) is arranged between the outer shell (15) and the supporting groove (16); the end of the outer shell (15) on one side of the hearth (1) is provided with a water inlet pipe (22), the end of the outer shell (15) on one side of the sealed hydraulic cylinder (21) is provided with a water outlet pipe (23), and the water outlet pipe (23) and the water inlet pipe (22) are respectively communicated with the water circulation cavity (18).
5. The sintering furnace for powder metallurgy parts according to claim 1, wherein: the isolation hydraulic cylinder (12) is installed on the isolation groove (2) on one side of the feeding and discharging support frame (3) through the support (11), the isolation flashboard (13) is fixedly installed at the end of a piston rod of the isolation hydraulic cylinder (12), and the isolation flashboard (13) is connected with the isolation groove (2) in a sliding and sealing mode through the isolation groove slide way (14).
6. The sintering furnace for powder metallurgy parts according to claim 1, wherein: a protective gas pipe (4) is arranged at one end of the hearth (1), and a gas pipe (5) is arranged on the hearth (1) on one side of the protective gas pipe (4); an exhaust pipe (32) is arranged at the end head of the other end of the hearth (1); temperature detection probes (10) are uniformly distributed on the hearth (1) between the gas pipe (5) and the exhaust pipe (32).
7. The sintering furnace for powder metallurgy parts according to claim 6, wherein: the gas pipe (5) extends to the inner side of the hearth (1), and a hearth sliding groove (9) is arranged above the end of the gas pipe (5) extending to the inner side of the hearth (1) through a hearth supporting rod (8); an air pipe (6) is sleeved in the gas pipe (5), the air pipe (6) extends to the outer side of the gas pipe (5), and a plurality of air outlet holes (7) are formed in the end of the air pipe (6) extending to the outer side of the gas pipe (5).
8. The sintering furnace for powder metallurgy parts according to claim 1, wherein: and in-place detection probes (31) are respectively arranged on the feeding and discharging support frame (3), the cooling groove and the isolation groove (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020991089.3U CN212191233U (en) | 2020-06-03 | 2020-06-03 | Sintering furnace for powder metallurgy parts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020991089.3U CN212191233U (en) | 2020-06-03 | 2020-06-03 | Sintering furnace for powder metallurgy parts |
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| CN212191233U true CN212191233U (en) | 2020-12-22 |
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| CN202020991089.3U Active CN212191233U (en) | 2020-06-03 | 2020-06-03 | Sintering furnace for powder metallurgy parts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264424A (en) * | 2021-11-15 | 2022-04-01 | 江苏永鼎股份有限公司 | Sealing performance testing tool and method for preform sintering furnace |
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2020
- 2020-06-03 CN CN202020991089.3U patent/CN212191233U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264424A (en) * | 2021-11-15 | 2022-04-01 | 江苏永鼎股份有限公司 | Sealing performance testing tool and method for preform sintering furnace |
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