Device for carrying out pressure sintering by utilizing constant static pressure

Abstract

The utility model discloses a device for carrying out pressure sintering by utilizing constant static pressure, which comprises an electric heating pressure kettle body and a control panel, and has the beneficial effects that an inner spiral temperature-conducting copper pipe is arranged, so that cooling liquid is injected into the inner spiral temperature-conducting copper pipe; the internal environment of the electric heating pressure kettle body is cooled through cooling liquid, the electric heating pressure kettle body can be started to take out a workpiece after air pressure and temperature are detected to be in a standard state after cooling, and by arranging a rotating connector, an external thread mounting pipe and an internal thread pipe, connection of threads on the inner side of the external thread mounting pipe and the internal thread pipe is achieved; the first pressure-resistant vacuumizing air pipe and the rotary connector are installed and connected with the inner threaded pipe, air exhaust treatment is conducted through the first pressure-resistant vacuumizing air pipe and the second pressure-resistant vacuumizing air pipe, vacuumizing treatment is conducted on the interior of the bag-shaped container, the interior of the polyimide bag-shaped container is vacuumized, and pressurization is conducted on the interior of the electric heating pressure kettle body.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering, in particular to a device for pressure sintering using constant static pressure. Background Art

[0002] At present, pressure sintering equipment mainly adopts mechanical pressurization. The heating temperature of the upper and lower plates can be set, and inert gas is introduced into the space between the upper and lower plates to prevent the device from being oxidized at high temperature. However, there are certain limitations in its cycle life, pressurization accuracy and processing quantity. The workpiece will still be oxidized at high temperature and can only be produced in small batches, which limits some processing needs of pressure sintering. Utility Model Content

[0003] The purpose of the utility model is to provide a device for pressure sintering using constant static pressure, so as to solve the problems raised in the above background technology, such as certain limitations in its cycle life, pressurization accuracy and processing quantity, high-temperature oxidation of the workpiece, and only small-batch production, which limits some processing needs of pressure sintering.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for pressure sintering using constant static pressure, comprising an electric heating pressure autoclave body and a control panel, a autoclave body top cover is installed on the top of the electric heating pressure autoclave body, a No. 2 pressure-resistant vacuum air pipe is fixedly connected inside the autoclave body top cover, a No. 1 pressure-resistant vacuum air pipe is fixedly connected to one end of the No. 2 pressure-resistant vacuum air pipe, a bag-shaped container is arranged inside the electric heating pressure autoclave body, an internally threaded pipe is fixedly connected to the top of the bag-shaped container, an externally threaded mounting pipe is connected to the internal thread of the internally threaded pipe, and the externally threaded mounting pipe is fixedly connected to the internal thread of the internally threaded mounting pipe. A rotating joint is installed on the top of the pipe installation, one end of the No. 1 pressure-resistant vacuum air pipe is connected to the rotating joint, an inner spiral thermal conductive copper tube is fixedly connected to the inner side of the electric heating pressure kettle body, a heating oil cavity is opened inside the electric heating pressure kettle body, electric heating rods are equidistantly installed inside the heating oil cavity, a cooling water inlet pipe is fixedly connected to one side of the electric heating pressure kettle body, one end of the inner spiral thermal conductive copper tube is fixedly connected to the cooling water inlet pipe, a cooling water outlet pipe is fixedly connected to one side of the electric heating pressure kettle body, and the other end of the inner spiral thermal conductive copper tube is fixedly connected to the cooling water outlet pipe.

[0005] As a preferred solution of the utility model: a pressure gauge is installed inside the kettle top cover, and a temperature detector is installed inside the kettle top cover.

[0006] As a preferred solution of the utility model: a pressure relief valve is fixedly connected inside the kettle body top cover, and a pressurizing pipe is fixedly connected inside the kettle body top cover.

[0007] As a preferred solution of the utility model: a lower pressing plate is arranged inside the bag-shaped container, a sintered workpiece body is arranged on the top of the lower pressing plate, and an upper pressing plate is arranged on the top of the sintered workpiece body.

[0008] As a preferred solution of the utility model: an electromagnetic valve is installed on the No. 2 pressure-resistant vacuum air pipe, and the No. 1 pressure-resistant vacuum air pipe and the No. 2 pressure-resistant vacuum air pipe are both made of polyimide material.

[0009] As a preferred solution of the utility model: the electric heating rod, the electromagnetic valve and the temperature detector are all electrically connected to the control panel.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides an inner spiral thermal conductive copper tube, thereby injecting coolant into the inner spiral thermal conductive copper tube, cooling the internal environment of the electric heating pressure autoclave body through the coolant, and after cooling, detecting the air pressure and temperature in the standard state, the electric heating pressure autoclave body can be opened to take out the workpiece, and the outer threaded mounting tube and the inner thread of the inner threaded tube are connected by providing a rotary joint, an outer threaded mounting tube and an inner threaded tube, and a No. 1 pressure-resistant vacuum air pipe and a rotary joint are installed and connected to the inner threaded tube, and the No. 1 pressure-resistant vacuum air pipe and the No. 2 pressure-resistant vacuum air pipe are used for air extraction, and the bag-shaped container is vacuumized, and the polyimide bag-shaped container is vacuumed, and the electric heating pressure autoclave body is pressurized. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0012] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0013] Figure 3 It is a schematic diagram of the external structure of the utility model.

[0014] In the figure: 1. Electric heating pressure kettle body; 2. Heating oil chamber; 3. Electric heating rod; 4. Bag-shaped container; 5. Internally threaded pipe; 6. Upper pressure plate; 7. Lower pressure plate; 8. Sintering workpiece body; 9. Externally threaded mounting pipe; 10. Rotary joint; 11. No. 1 pressure-resistant vacuum air pipe; 12. Control panel; 13. Internally spiral thermal conductive copper pipe; 14. Cooling water inlet pipe; 15. Cooling water outlet pipe; 16. Kettle body top cover; 17. No. 2 pressure-resistant vacuum air pipe; 18. Solenoid valve; 19. Pressure gauge; 20. Temperature detector; 21. Pressurizing pipe; 22. Pressure relief valve. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figures 1 to 3 The utility model provides a technical solution: a device for pressure sintering using constant static pressure, comprising an electric heating pressure autoclave body 1 and a control panel 12, a autoclave body top cover 16 is installed on the top of the autoclave body 1, a No. 2 pressure-resistant vacuum air pipe 17 is fixedly connected inside the autoclave body top cover 16, a No. 1 pressure-resistant vacuum air pipe 11 is fixedly connected to one end of the No. 2 pressure-resistant vacuum air pipe 17, a bag-shaped container 4 is arranged inside the electric heating pressure autoclave body 1, an internal threaded pipe 5 is fixedly connected to the top of the bag-shaped container 4, an external threaded mounting pipe 9 is connected to the internal thread of the internal threaded pipe 5, a rotary joint 10 is installed on the top of the external threaded mounting pipe 9, and a No. 1 pressure-resistant vacuum air pipe 11 is fixedly connected to one end of the No. 2 pressure-resistant vacuum air pipe 17. One end of the electric heating pressure autoclave body 1 is connected to the rotary joint 10, an inner spiral temperature-conducting copper tube 13 is fixedly connected to the inner side of the electric heating pressure autoclave body 1, a heating oil chamber 2 is opened inside the electric heating pressure autoclave body 1, and electric heating rods 3 are equidistantly installed inside the heating oil chamber 2, a cooling water inlet pipe 14 is fixedly connected to one side of the electric heating pressure autoclave body 1, one end of the inner spiral temperature-conducting copper tube 13 is fixedly connected to the cooling water inlet pipe 14, a cooling water outlet pipe 15 is fixedly connected to one side of the electric heating pressure autoclave body 1, and the other end of the inner spiral temperature-conducting copper tube 13 is fixedly connected to the cooling water outlet pipe 15, cold water is introduced into the inner spiral temperature-conducting copper tube 13 through the cooling water inlet pipe 14, and the sintered workpiece body 8 is taken out after the coolant is cooled.

[0017] Among them, a pressure gauge 19 is installed inside the kettle body top cover 16, and a temperature detector 20 is installed inside the kettle body top cover 16. The pressure value inside the electric heating pressure kettle body 1 is detected and processed by the pressure gauge 19, and the working temperature inside the electric heating pressure kettle body 1 is detected and processed by the temperature detector 20.

[0018] Among them, a pressure relief valve 22 is fixedly connected inside the kettle body top cover 16, and a pressurizing pipe 21 is fixedly connected inside the kettle body top cover 16. After the working time is over, the pressure relief valve 22 is opened to relieve the pressure in the electric heating pressure kettle body 1.

[0019] A lower pressing plate 7 is provided inside the bag-shaped container 4 , a sintered workpiece body 8 is provided on the top of the lower pressing plate 7 , and an upper pressing plate 6 is provided on the top of the sintered workpiece body 8 .

[0020] Among them, an electromagnetic valve 18 is installed on the No. 2 pressure-resistant vacuum air pipe 17, and the No. 1 pressure-resistant vacuum air pipe 11 and the No. 2 pressure-resistant vacuum air pipe 17 are both made of polyimide material. The bag-like container 4 is vacuumed by connecting the No. 2 pressure-resistant vacuum air pipe 17 and the No. 1 pressure-resistant vacuum air pipe 11 to an external vacuum equipment.

[0021] The electric heating rod 3, the electromagnetic valve 18 and the temperature detector 20 are all electrically connected to the control panel 12. The device is centrally controlled through the control panel 12, which improves the safety and work efficiency of the device operation.

[0022] Specifically, when in use, the sintered workpiece body 8 is clamped between the upper pressing plate 6 and the lower pressing plate 7, the No. 2 pressure-resistant vacuum air pipe 17 and the No. 1 pressure-resistant vacuum air pipe 11 are connected to the external vacuum equipment, and the No. 1 pressure-resistant vacuum air pipe 11 is installed with the internal threaded pipe 5 through the bottom rotary joint 10 and the external threaded mounting pipe 9, and the threaded mounting process is performed on the outer side of the external threaded mounting pipe 9 and the inner side of the internal threaded pipe 5, and the No. 1 pressure-resistant vacuum air pipe 11 and the No. 2 pressure-resistant vacuum air pipe 17 are installed and connected with the internal threaded pipe 5, and the bag-shaped container 4 is vacuumed and placed in the electric heating press. The electric heating pressure kettle body 1 is set, the pressure value, temperature value and working time are set, and the electric heating pressure kettle body 1 is pressurized. After the pressure is stable, the electric heating rod 3 is started. The electric heating rod 3 heats the heating oil in the heating oil chamber 2 and heats the inside of the electric heating pressure kettle body 1. After detecting that the pressure and temperature in the electric heating pressure kettle body 1 are both at the set value, the working time is calculated. After the working time is over, the pressure relief valve 22 is opened. After the air pressure is stable, cold water is introduced into the inner spiral temperature conducting copper tube 13 through the cooling water inlet pipe 14. After the coolant is cooled down, the air pressure and temperature are detected to be in the standard state. The pressure kettle can be opened to take out the sintered workpiece body 8.

[0023] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0025] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for pressure sintering using constant static pressure, comprising an electrically heated autoclave body (1) and a control panel (12), characterized in that: A kettle body top cover (16) is installed on the top of the electric heating pressure kettle body (1), and a No. 2 pressure-resistant vacuum air pipe (17) is fixedly connected inside the kettle body top cover (16), and one end of the No. 2 pressure-resistant vacuum air pipe (17) is fixedly connected to a No. 1 pressure-resistant vacuum air pipe (11). A bag-shaped container (4) is provided inside the electric heating pressure kettle body (1), and an internal threaded pipe (5) is fixedly connected to the top of the bag-shaped container (4). The internal thread of the internal threaded pipe (5) is connected to an external threaded mounting pipe (9), and a rotating joint (10) is installed on the top of the external threaded mounting pipe (9). One end of the No. 1 pressure-resistant vacuum air pipe (11) is connected to the The electric heating pressure autoclave body (1) is connected with a rotary joint (10); an inner spiral thermal conductive copper tube (13) is fixedly connected to the inner side of the electric heating pressure autoclave body (1); a heating oil chamber (2) is provided inside the electric heating pressure autoclave body (1); electric heating rods (3) are equidistantly installed inside the heating oil chamber (2); a cooling water inlet pipe (14) is fixedly connected to one side of the electric heating pressure autoclave body (1); one end of the inner spiral thermal conductive copper tube (13) is fixedly connected to the cooling water inlet pipe (14); a cooling water outlet pipe (15) is fixedly connected to one side of the electric heating pressure autoclave body (1); and the other end of the inner spiral thermal conductive copper tube (13) is fixedly connected to the cooling water outlet pipe (15).

2. The device for pressure sintering using constant static pressure according to claim 1, characterized in that: A pressure gauge (19) is installed inside the kettle body top cover (16), and a temperature detector (20) is installed inside the kettle body top cover (16).

3. The device for pressure sintering using constant static pressure according to claim 1, characterized in that: A pressure relief valve (22) is fixedly connected to the interior of the kettle body top cover (16), and a pressurizing pipe (21) is fixedly connected to the interior of the kettle body top cover (16).

4. The device for pressure sintering using constant static pressure according to claim 1, characterized in that: A lower pressing plate (7) is arranged inside the bag-shaped container (4), a sintered workpiece body (8) is arranged on the top of the lower pressing plate (7), and an upper pressing plate (6) is arranged on the top of the sintered workpiece body (8).

5. The device for pressure sintering using constant static pressure according to claim 2, characterized in that: The second pressure-resistant vacuum air pipe (17) is provided with an electromagnetic valve (18), and the first pressure-resistant vacuum air pipe (11) and the second pressure-resistant vacuum air pipe (17) are both made of polyimide material.

6. The device for pressure sintering using constant static pressure according to claim 5, characterized in that: The electric heating rod (3), the electromagnetic valve (18) and the temperature detector (20) are all electrically connected to the control panel (12).

Images