AU2021106099A4

AU2021106099A4 - High-temperature air pressure sintering furnace

Info

Publication number: AU2021106099A4
Application number: AU2021106099A
Authority: AU
Inventors: Yingxin Li; Mingyue Wang; Jianwei Xiang; Simin ZOU
Original assignee: Zhuzhou Ruideer Metallurgy Equipments Co Ltd
Current assignee: Zhuzhou Ruideer Metallurgy Equipments Co Ltd
Priority date: 2021-07-16
Filing date: 2021-08-20
Publication date: 2021-10-28
Anticipated expiration: 2029-08-20
Also published as: CN215524176U

Abstract

OF THE DISCLOSURE The present utility model discloses a vacuum sintering furnace, including a sintering furnace body, a preheating device, a vacuum device, a condensing device, and a controller. A furnace jacket and a heat insulation sleeve are arranged inside the sintering furnace body in sequence from outside to inside; a heat insulation cavity is arranged between the sintering furnace body and the furnace jacket; a heating chamber is arranged in the sintering region; the heating chamber includes a heater; the heater is arranged between the outer side shell and the closed box; the closed box can collect a sintered body inside in a closed state; the closed box is connected with the vacuum device through a vacuum pipe; the preheating device includes a hollow barrel body and a preheating water pipe arranged on the outer side of the barrel body; the condensing device is arranged on the vacuum pipe, and includes a condensing pipe; a cooling water pipe is arranged on the outer side of the condensing pipe; a water outlet of the cooling water pipe is connected with a water inlet of the preheating water pipe through a pipeline; and the vacuum device is connected with the controller. By the present utility model, paraffin discharged in the sintering process can be recycled in time and pollution to a product is avoided. -1/2 DRAWINGS 100 19-3 2 ,1 5, 16 6 18 1 3 2,8 -T.12 17 "10 15 22 FIG.1 1

Description

-1/2

DRAWINGS

100 19-3

2,1 5, 16 6 18 13

2,8

-T.12 17

"10 15 22

FIG.1

HIGH-TEMPERATURE AIR PRESSURE SINTERING FURNACE TECHNICAL FIELD

[01] The present utility model relates to the technical field of high-temperature sintering equipment, and particularly relates to a high-temperature air pressure sintering furnace.

BACKGROUND ART

[02] A high-temperature air pressure sintering furnace is sintering equipment widely used in various materials such as silicon carbide, silicon nitride, silicon-aluminum-oxynitride, high-temperature alloys and cemented carbides. Since a furnace body is of an airtight structure, and a working atmosphere in the furnace is often required to have a high pressure and high temperature. A cold end connector of an electric heating wire is often oxidized, short-circuited or even melted due to an extremely high temperature. Therefore, there is an urgent need for a high-temperature air pressure sintering furnace for cooling the cold end connector of the electric heating wire.

SUMMARY

[03] In order to solve the above technical problems, the present utility model provides a high-temperature air pressure sintering furnace for cooling a cold end connector of an electric heating wire. By means of cooling a cold end of the electric heating wire, the electric heating wire is ensured to work stably, thus avoiding a failure of the sintering furnace caused by an extremely high temperature of the cold end connector of the electric heating wire.

[04] In order to achieve the above purpose, the present utility model provides the following solution.

[05] The present utility model provides a high-temperature air pressure sintering furnace, including a sealed cooling mechanism. Two ends of the sealed cooling mechanism are correspondingly provided with connectors, and the corresponding connectors at the two ends of the sealed cooling mechanism are electrically connected to the inside of the sealed cooling mechanism. One end of the sealed cooling mechanism is connected with a furnace shell of the high-temperature air pressure sintering furnace, and the connector of one end of the sealed cooling mechanism is used to be electrically connected with an electric heating wire of the high-temperature air pressure sintering furnace. The connector of the other end of the sealed cooling mechanism is used to be electrically connected with a power supply or a control system.

[06] Optionally, a plurality of sealed heat conduction pipes are arranged in the sealed cooling mechanism; each of two ends of each sealed heat conduction pipes is provided with one connector; and the connectors at the two ends of the same sealed heat conduction pipe are electrically connected inside the sealed heat conduction pipe.

[07] Optionally, a heat and electricity conduction rod is arranged inside each sealed heat conduction pipe; the end parts of the heat and electricity conduction rod extends out of two ends of the sealed heat conduction pipe; and sealing structures are arranged between the end parts of the heat and electricity conduction rod and the inner wall of the sealed heat conduction pipe.

[08] Optionally, the heat and electricity conduction rod is a copper rod or a silver rod or a platinum rod.

[09] Optionally, heat conduction liquid is packaged in the sealed heat conduction pipe.

[10] Optionally, the heat and electricity conduction rod and the connector are of an integrated structure.

[11] Optionally, the bottom of the sealed cooling mechanism is provided with a cooling water inlet, and the top of the sealed cooling mechanism is provided with cooling water outlet.

[12] Optionally, a plurality of groups of electric heating wires are arranged on the outer wall of a sealed cavity in the high-temperature air pressure sintering furnace.

[13] The present utility model achieves the following technical effects compared to the existing art.

[14] In the high-temperature air pressure sintering furnace in the present utility model, the sealed cooling mechanism is provided for cooling a cold end connector of the electric heating wire, so that an extremely high temperature of the cold end connector of the electric heating wire is avoided. Therefore, the problem of an extremely hot cold end connector of the electric heating wire is solved. The electric heating wire can work stably, and failures of the sintering furnace are reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

[15] In order to describe the embodiments of the present utility model or the technical solutions in the existing art more clearly, drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the illustration below are merely some embodiments of the present utility model. Those ordinarily skilled in the art also can acquire other drawings according to the provided drawings without doing creative work.

[16] FIG. 1 is a schematic structural diagram of a high-temperature air pressure sintering furnace of the present utility model.

[17] Reference signs in the drawings: 1: furnace cover; 2: electric heating wire; 3: sealed cavity; 4: furnace shell; 5: furnace bottom; 6: connector; 7: cooling water inlet; 8: heat and electricity conduction rod; 9: sealed heat conduction pipe; and 10: cooling water outlet.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[18] The technical solutions in the embodiments of the present utility model will be described clearly and completely below with reference to the drawings in the embodiments of the present utility model. Obviously, the embodiments described herein are only part of the embodiments of the present utility model, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

[19] Embodiment I:

[20] As shown in FIG. 1, the present embodiment provides a high-temperature air pressure sintering furnace, including a sealed cooling mechanism. Two ends of the sealed cooling mechanism are correspondingly provided with connectors 6, and the corresponding connectors 6 at the two ends of the sealed cooling mechanism are electrically connected to the inside of the sealed cooling mechanism. One end of the sealed cooling mechanism is connected with a furnace shell 4 of the high-temperature air pressure sintering furnace, and the connector 6 of one end of the sealed cooling mechanism is used to be electrically connected with an electric heating wire 2 of the high-temperature air pressure sintering furnace. The connector 6 of the other end of the sealed cooling mechanism is used to be electrically connected with a power supply or a control system.

[21] In the specific embodiment, two groups of electric heating wires 2 are arranged on the outer wall of a sealed cavity 3 in the high-temperature air pressure sintering furnace. Four sealed heat conduction pipes 9 are arranged in the sealed cooling mechanism; each of two ends of each sealed heat conduction pipe 9 are respectively provided with one connector 6. The connectors 6 at the two ends of the same sealed heat conduction pipe 9 are electrically connected through a heat and electricity conduction rod 8 inside the sealed heat conduction pipe 9. The heat and electricity conduction rod 8 selects a copper rod. The end parts of the copper rod extend out of two ends of the sealed heat conduction pipe 9. The connector 6 is a wiring terminal stamped at the end part of the copper rod. The two cold end connectors 6 of each group of electric heating wires 2 are respectively connected with one wiring terminal.

[22] Sealing structures are arranged between the end parts of the heat and electricity conduction rod 8 and the inner wall of the sealed heat conduction pipe 9. The sealing structures can use sealing rings, or mechanical sealing structures. Heat conduction liquid is packaged inside the sealed heat conduction pipe 9. The heat conduction liquid uses heat conduction oil.

[23] One end of the sealed cooling mechanism is connected with a furnace shell 4 through a sealing flange, and the other end of the sealed cooling mechanism is provided with a sealing cover through a sealing flange. The bottom is provided with a cooling water inlet 7. The top of the sealed cooling mechanism is provided with a cooling water outlet 10.

[24] In a more specific embodiment, a sealing ring is sleeved on the outer wall of the sealed heat conduction pipe 9. The sealing ring is used to seal the heat conduction pipe and the furnace shell 4 as well as the sealing cover.

[25] Embodiment II

[26] In the present embodiment, the connector 6 and the heat and electricity conduction rod 8 are of split structures. The connector 6 is sleeved at the end part of the heat and electricity conduction rod 8 and is welded with the heat and electricity conduction rod 8.

[27] It should be noted that for those skilled in the art, it is apparent that the present utility model is not limited to the details of the demonstrative embodiments mentioned above, and that the present utility model can be realized in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meanings and scope of equivalent elements of the claims are intended to be included in the present utility model, and any reference sign in the claims shall not be regarded as limiting claims involved.

[28] The principle and implementation modes of the present utility model are described by applying specific examples in the present specification. The descriptions of the above embodiments are only intended to help to understand the method of the present utility model and a core idea of the method. In addition, those ordinarily skilled in the art can make changes to the specific implementation modes and the application scope according to the idea of the present utility model. From the above, the contents of the present specification shall not be deemed as limitations to the present utility model.

Claims

WHAT IS CLAIMED IS:

1. A high-temperature air pressure sintering furnace, comprising a sealed cooling mechanism, wherein two ends of the sealed cooling mechanism are correspondingly provided with connectors, and the corresponding connectors at the two ends of the sealed cooling mechanism are electrically connected to the inside of the sealed cooling mechanism; one end of the sealed cooling mechanism is connected with a furnace shell of the high-temperature air pressure sintering furnace, and the connector of one end of the sealed cooling mechanism is used to be electrically connected with an electric heating wire of the high-temperature air pressure sintering furnace; and the connector of the other end of the sealed cooling mechanism is used to be electrically connected with a power supply or a control system.

2. The high-temperature air pressure sintering furnace according to claim 1, wherein a plurality of sealed heat conduction pipes are arranged in the sealed cooling mechanism; each of two ends of each sealed heat conduction pipes is provided with one connector; and the connectors at the two ends of the same sealed heat conduction pipe are electrically connected inside the sealed heat conduction pipe.

3. The high-temperature air pressure sintering furnace according to claim 2, wherein a heat and electricity conduction rod is arranged inside each sealed heat conduction pipe; the end parts of the heat and electricity conduction rod extend out of two ends of the sealed heat conduction pipe; and sealing structures are arranged between the end parts of the heat and electricity conduction rod and the inner wall of the sealed heat conduction pipe.

4. The high-temperature air pressure sintering furnace according to claim 3, wherein the heat and electricity conduction rod is a copper rod or a silver rod or a platinum rod.

5. The high-temperature air pressure sintering furnace according to claim 3, wherein heat conduction liquid is packaged in the sealed heat conduction pipe.

6. The high-temperature air pressure sintering furnace according to claim 3, wherein the heat and electricity conduction rod and the connector are of an integrated structure.

7. The high-temperature air pressure sintering furnace according to claim 1, wherein the bottom of the sealed cooling mechanism is provided with a cooling water inlet, and the top of the sealed cooling mechanism is provided with cooling water outlet.

8. The high-temperature air pressure sintering furnace according to claim 1, wherein a plurality of groups of electric heating wires are arranged on the outer wall of a sealed cavity in the high-temperature air pressure sintering furnace.