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A connection structure between the thermal electrode of the vacuum hot pressing sintering furnace and the piston head of the hydraulic cylinder

A technology of vacuum hot pressing sintering and connection structure, which is applied in furnaces, muffle furnaces, cooking furnaces, etc. It can solve the problems of aging and brittleness of insulating sleeves, affecting unevenness and parallelism, and inconvenient disassembly and assembly, so as to increase the effective The effect of contact area, product quality assurance, and easy maintenance and disassembly

Active Publication Date: 2015-09-30
广东金鑫得新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned connection method can better solve the insulation problem. However, because the ordinary vacuum hot-pressing sintering furnace usually adopts the gap mode of operation, the insulation sleeve described above is extremely difficult in a cold (room temperature) and hot (about 300°C) environment. Easy to age, brittle and damaged
In addition, the existing connection structure between the thermode and the piston head of the hydraulic cylinder still has the following disadvantages: 1. Since the thermode is usually forced to cool by jacket water cooling, the connection screw holes make the channel arrangement of the cooling water in the thermode less It is very inconvenient, the passage of cooling water is difficult to be evenly distributed in the thermode body; and the effective contact area between the thermode and the workpiece is reduced due to the connecting screw holes on the surface of the thermode, which increases the contact resistance between it and the workpiece, resulting in The heat generation of the thermode increases
When the above situation is serious, the thermode will be deformed due to thermal stress, which will affect the unevenness of the two thermodes themselves and the parallelism between the two, and then affect the product quality and the service life of the thermode; 2. Due to the The screws are generally made of carbon steel with high magnetic permeability, and the thermal damage caused by eddy current to the insulating sleeve is very prominent, which further accelerates the aging of the insulating sleeve; 3. The structure is complex and inconvenient to disassemble

Method used

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  • A connection structure between the thermal electrode of the vacuum hot pressing sintering furnace and the piston head of the hydraulic cylinder
  • A connection structure between the thermal electrode of the vacuum hot pressing sintering furnace and the piston head of the hydraulic cylinder
  • A connection structure between the thermal electrode of the vacuum hot pressing sintering furnace and the piston head of the hydraulic cylinder

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Experimental program
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Effect test

Embodiment 1

[0022] see image 3 and Figure 4 , In this example, the connection structure between the hot electrode and the hydraulic cylinder piston head is composed of the hydraulic cylinder piston head 5 , the pressure plate 1 , the insulating plate 2 and the hot electrode 3 connected in sequence. Among them, the pressure plate 1 is welded on the end face of the piston head 5, and the pressure plate 1 and the insulating plate 2 are fixed together by four screws 4 evenly distributed; the insulating plate 2 and the hot electrode 3 are connected by a dovetail groove, and the dovetail groove connection structure The dovetail is arranged on the insulating plate 2, and the dovetail groove is arranged on the hot electrode 3, and the matching mode of the two is static fit. The material of the insulating plate 2 in the above connection structure is an epoxy resin plate.

Embodiment 2

[0024] see Figure 5 and Image 6 The difference between this embodiment and Embodiment 1 is: 1. The dovetail groove in the dovetail groove connection structure is arranged on the insulating plate 2, and the dovetail is arranged on the hot electrode 3. 2. The material of the insulating plate 2 is a polytetrafluoroethylene plate. The other structures of the connection structure of this example are the same as those of the first embodiment.

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Abstract

The invention discloses a connecting structure of a vacuum hot pressing sintering furnace thermode and an oil hydraulic cylinder piston head. The connecting structure comprises the oil hydraulic cylinder piston head, a pressing plate, an insulating plate and the thermode which are connected in sequence. The piston head is integrally welded with the pressing plate. The connecting structure is characterized in that the piston head is fixed with the insulating plate through screws. The insulating plate is connected with the thermode through a dove tail groove. The connecting structure is few in quick-wear part, long in service life, simple in structure, and convenient to demount and maintain.

Description

technical field [0001] The invention relates to the configuration of a heating device in a sintering equipment, in particular to a connection structure between a hot electrode of a vacuum hot pressing sintering furnace and a piston head of an oil pressure cylinder. Background technique [0002] At present, vacuum hot pressing sintering furnace is mainly used for the processing and forming of large-scale cemented carbide, refractory compounds and ceramics. Therefore, in recent years, related technologies for vacuum hot pressing sintering in my country have developed rapidly. [0003] Vacuum hot pressing sintering technology refers to a sintering method in which dry powder is filled into a mold under a vacuum atmosphere, and then heated and pressurized to complete sintering and molding at the same time. Vacuum hot pressing sintering furnace is generally mainly composed of water-cooled double-layer furnace body, vacuum system, hydraulic system, power supply and electric heating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B5/14F27D11/10
Inventor 吴宣成
Owner 广东金鑫得新材料有限公司
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