CN211626081U - High-precision double-pressure-range vacuum hot-pressing furnace - Google Patents
High-precision double-pressure-range vacuum hot-pressing furnace Download PDFInfo
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- CN211626081U CN211626081U CN201922034258.4U CN201922034258U CN211626081U CN 211626081 U CN211626081 U CN 211626081U CN 201922034258 U CN201922034258 U CN 201922034258U CN 211626081 U CN211626081 U CN 211626081U
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Abstract
The utility model discloses a high accuracy dual pressure range vacuum hot pressing stove, including the vacuum hot pressing furnace body, the vacuum hot pressing furnace body is inside sealed tube-shape, and the upper end of the inside of vacuum hot pressing furnace body is equipped with pressure device, and pressure device's lower extreme is equipped with the mould, and the outside of mould is equipped with insulating protective sheath, and insulating protective sheath's the outside is equipped with a plurality of induction coil groups, and induction coil group is connected with induction power supply, and the outside of mould is equipped with cooling module. The application can obtain the following technical effects: 1, unstable factors caused by dead zones of valves are eliminated by adopting a double-range pressure detection mode, so that the pressure of the vacuum hot-pressing furnace can be controlled in the whole process, and the quality of products is improved; 2 the utility model discloses heating the material at two induction coil group, not only rising temperature is fast, and the heating is even moreover, and the rivers passageway in the mould outside can in time cool down fast, and overall structure is simple compact, has shortened the sintering time, improves production efficiency.
Description
Technical Field
The application belongs to the sintering field, and particularly relates to a high-precision double-pressure range vacuum hot-pressing furnace.
Background
The hot-pressing sintering method is a sintering method in which dry powder is filled into a mold, and then the mold is heated while being pressurized from a uniaxial direction, so that the molding and sintering are simultaneously completed. The conventional powder metallurgy sintering method is the preparation process of metal ceramics which is the earliest and the most adopted at present, is developed based on a powder metallurgy process and a traditional ceramic sintering process, and comprises the main procedures of material mixing, forming, sintering and the like. The autoclave is the common equipment of sintering suppression, current autoclave has developed the degree that utilizes vacuum environment to improve sintering efficiency, patent CN201620968639.3, the structure of an autoclave has just been disclosed in an autoclave, but in traditional vacuum autoclave, only a pressure valve controls the dynamics of whole pressurization subassembly, but the pressure valve all has one section nonlinear uncontrollable dead zone when pressure is less, and the existence in dead zone can make the pressure in this interval uncontrolled, cause the precision reduction of hot pressing process, influence product quality.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application discloses a high accuracy dual pressure range vacuum hot pressing stove, including the vacuum hot pressing furnace body, the vacuum hot pressing furnace body is inside sealed tube-shape, the outside swing joint of vacuum hot pressing furnace body has the furnace frame, be equipped with the gland on the upper end of vacuum hot pressing furnace body, one side of gland is equipped with the exhaust tube, the left and right sides of vacuum hot pressing furnace body is equipped with water inlet and delivery port respectively, the bottom of vacuum hot pressing furnace body is equipped with the feed inlet, the upper end of the inside of vacuum hot pressing furnace body is equipped with pressure device, pressure device's lower extreme is equipped with the mould, the outside of mould is equipped with insulating protective sheath, be equipped with induction coil between insulating protective sheath and the mould, induction coil group is.
As an optimal implementation mode, the vacuum hot pressing furnace body even has two pressure power journey subassemblies, and two pressure power journey subassemblies are including setting up respectively in the inside and outside each pressure sensors of vacuum hot pressing furnace body, and two pressure sensors are connected to two inlet valve ports of switching-over valve respectively, and the outlet valve port of switching-over valve communicates to the overflow valve, and the overflow valve even has pressure control center, is equipped with the manometer on the pressure control center, pressure control center control pressure device.
As a preferred embodiment of the present invention, the cooling module is a double-layer water-cooling structure, and the double-layer water-cooling structure is a double-layer spiral water pipe.
As a preferred embodiment of the present invention, the number of the induction coil groups is an even number.
As an optimized embodiment of the present invention, the plurality of induction coil sets include induction coil set one and induction coil set two, the induction coil set one and induction coil set two do not contact, the interval of induction coil set one and induction coil set two equals the width of an induction coil set, and the coil winding direction of induction coil set one and induction coil set two is opposite.
Compared with the prior art, the application can obtain the following technical effects: 1 adopt double-range pressure detection's mode to eliminate the unstable factor that the valve blind spot brought, make the pressure of vacuum autoclave can whole control, improve the quality of product 2 the utility model discloses heat the material at two induction coil group, not only heat up soon, heat evenly moreover, the rivers passageway in the mould outside can in time cool down fast, and overall structure is simple compact, has shortened the sintering time, improves production efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic diagram of the overall structure of the present invention;
fig. 2 is a schematic diagram of dual-range pressure measurement according to the present invention.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
As shown in fig. 1-2, a high-precision dual-pressure range vacuum hot-pressing furnace according to an embodiment of the present application includes a vacuum hot-pressing furnace body 1, the vacuum hot-pressing furnace body 1 is a cylindrical body with an inner seal, a furnace frame 2 is movably connected to the outer portion of the vacuum hot-pressing furnace body 1, a press cover 3 is disposed on the upper end of the vacuum hot-pressing furnace body 1, an exhaust pipe 4 is disposed on one side of the press cover 3, a water inlet 5 and a water outlet 6 are disposed on the left and right sides of the vacuum hot-pressing furnace body 1, a feed inlet 12 is disposed at the bottom of the vacuum hot-pressing furnace body 1, a pressure device 8 is disposed at the upper end of the inner portion of the vacuum hot-pressing furnace body 1, a mold 9 is disposed at the lower end of the pressure device 8, an insulating protective sleeve 10 is disposed on the outer side of the mold 9, a plurality, the double-layer water cooling structure is a double-layer spiral water pipe.
The vacuum hot-pressing furnace body 1 is connected with a double-pressure power stroke assembly, one implementation mode of the double-pressure power stroke assembly is that the double-pressure power stroke assembly comprises pressure sensors 13 which are respectively arranged inside and outside the vacuum hot-pressing furnace body 1, the two pressure sensors 13 are respectively connected to two oil inlet valve ports of a reversing valve 14, an oil outlet valve port of the reversing valve 14 is communicated to an overflow valve 15, the overflow valve 15 is connected with a pressure control center 16, a pressure gauge 17 is arranged on the pressure control center 16, and the pressure control center 16 controls a pressurizing device 8.
The utility model discloses a theory of operation of two pressure journey subassemblies does, when initial pressure is less, pressure sensor 13 detects the pressure on mould upper strata, communicate it to overflow valve 15 through switching-over valve 14, through the proportional amplification of overflow valve 15, can be accurate to the pressure below 5 megapascals and control, after the pressure increase, pressure sensor 13 detects the pressure of mould lower floor, directly communicate manometer 16 through switching-over valve 14 with it, can carry out accurate control to the pressure that 5-32 megapascals will.
One embodiment of the induction coil is that the number of the induction coil groups 7 is even, the induction coil groups 7 include a first induction coil group 71 and a second induction coil group 72, the first induction coil group 71 is not in contact with the second induction coil group 72, the distance between the first induction coil group 71 and the second induction coil group 72 is equal to the width of one induction coil group, the winding directions of the first induction coil group 71 and the second induction coil group 72 are opposite, and the electromagnetic coils of the first induction coil group 71 and the second induction coil group 72 generate alternating magnetic fields to form strong current eddy currents, so that the heating effect is better.
Compared with the prior art, the application can obtain the following technical effects: 1 adopt double-range pressure detection's mode to eliminate the unstable factor that the valve blind spot brought, make the pressure of vacuum autoclave can whole control, improve the quality of product 2 the utility model discloses heat the material at two induction coil group, not only heat up soon, heat evenly moreover, the rivers passageway in the mould outside can in time cool down fast, and overall structure is simple compact, has shortened the sintering time, improves production efficiency.
The foregoing description shows and describes several preferred embodiments of the present invention, but as before, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, either in the above teachings or as applied to the relevant art or knowledge. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (5)
1. The high-precision double-pressure-range vacuum hot-pressing furnace is characterized by comprising a vacuum hot-pressing furnace body (1), wherein the vacuum hot-pressing furnace body (1) is in a cylindrical shape with an inner seal, a furnace frame (2) is movably connected to the outer part of the vacuum hot-pressing furnace body (1), a gland (3) is arranged at the upper end of the vacuum hot-pressing furnace body (1), an exhaust pipe (4) is arranged on one side of the gland (3), a water inlet (5) and a water outlet (6) are respectively arranged at the left side and the right side of the vacuum hot-pressing furnace body (1), a feed inlet (12) is arranged at the bottom of the vacuum hot-pressing furnace body (1), a pressurizing device (8) is arranged at the upper end of the inner part of the vacuum hot-pressing furnace body (1), a mold (9) is arranged at the lower end of the pressurizing device (8), an insulating protective sleeve (10) is arranged at the outer side, the induction coil group (7) is connected with an induction power supply, and a cooling assembly (11) is arranged on the outer side of the die (9).
2. The high-precision double-pressure-range vacuum hot-pressing furnace as claimed in claim 1, wherein: the vacuum hot-pressing furnace body (1) is connected with a double-pressure range assembly, the double-pressure range assembly comprises pressure sensors (13) which are respectively arranged inside and outside the vacuum hot-pressing furnace body (1), the two pressure sensors (13) are respectively connected to two oil inlet valve ports of a reversing valve (14), the oil outlet valve port of the reversing valve (14) is communicated to an overflow valve (15), the overflow valve (15) is connected with a pressure control center (16), a pressure gauge (17) is arranged on the pressure control center (16), and the pressure control center (16) controls the pressurizing device (8).
3. The high-precision double-pressure-range vacuum hot-pressing furnace as claimed in claim 1, wherein: the cooling assembly (11) is of a double-layer water cooling structure, and the double-layer water cooling structure is a double-layer spiral water pipe.
4. The high-precision double-pressure-range vacuum hot-pressing furnace as claimed in claim 1, wherein: the number of the induction coil groups (7) is even.
5. The high-precision double-pressure-range vacuum hot-pressing furnace as claimed in claim 1, wherein: the induction coil groups (7) comprise an induction coil group I (71) and an induction coil group II (72), the induction coil group I (71) is not in contact with the induction coil group II (72), the distance between the induction coil group I (71) and the induction coil group II (72) is equal to the width of one induction coil group, and the coil winding directions of the induction coil group I (71) and the induction coil group II (72) are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922034258.4U CN211626081U (en) | 2019-11-22 | 2019-11-22 | High-precision double-pressure-range vacuum hot-pressing furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922034258.4U CN211626081U (en) | 2019-11-22 | 2019-11-22 | High-precision double-pressure-range vacuum hot-pressing furnace |
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| CN211626081U true CN211626081U (en) | 2020-10-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029805A (en) * | 2021-03-04 | 2021-06-25 | 武汉科技大学 | Visual detection method for high-temperature performance of material with external magnetic field |
| CN113029806A (en) * | 2021-03-04 | 2021-06-25 | 武汉科技大学 | Visual detection equipment for high-temperature performance of material with external magnetic field |
| CN113029807A (en) * | 2021-03-04 | 2021-06-25 | 武汉科技大学 | Material high temperature service performance detection equipment |
| CN114939645A (en) * | 2022-05-25 | 2022-08-26 | 厦门鼎铸智能设备有限公司 | Vacuum casting system and control method thereof |
-
2019
- 2019-11-22 CN CN201922034258.4U patent/CN211626081U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029805A (en) * | 2021-03-04 | 2021-06-25 | 武汉科技大学 | Visual detection method for high-temperature performance of material with external magnetic field |
| CN113029806A (en) * | 2021-03-04 | 2021-06-25 | 武汉科技大学 | Visual detection equipment for high-temperature performance of material with external magnetic field |
| CN113029807A (en) * | 2021-03-04 | 2021-06-25 | 武汉科技大学 | Material high temperature service performance detection equipment |
| CN113029807B (en) * | 2021-03-04 | 2022-11-18 | 武汉科技大学 | Material high temperature service performance detection equipment |
| CN114939645A (en) * | 2022-05-25 | 2022-08-26 | 厦门鼎铸智能设备有限公司 | Vacuum casting system and control method thereof |
| CN114939645B (en) * | 2022-05-25 | 2024-01-23 | 厦门鼎铸智能设备有限公司 | Vacuum casting system and control method thereof |
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