A connection method between a cermet heating element and a flange
A cermet and connection method technology, applied in the direction of flange connection, lighting and heating equipment, pipes/pipe joints/pipe fittings, etc., can solve the problems of easy cracking, color change, and unsightly appearance, and achieve a smooth and shiny surface, which is not easy Air oxidation, good sealing performance
Active Publication Date: 2019-11-19
珠海华宇宏瑞科技有限公司
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Problems solved by technology
At present, ceramic glue or silica gel is mostly used for bonding between the cermet heating element and the ceramic flange, and these glues are easy to crack after frequent temperature changes, resulting in poor sealing performance at the joint between the cermet heating element and the flange, and These glues are easily oxidized and cause color changes, which are not beautiful enough
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[0022] see figure 1 , figure 2 and image 3 , a method for connecting a cermet heating element and a flange according to the present invention comprises the following steps: providing a cermet heating element 1 to be connected, a flange 2 and a glaze 3 as a connection medium, wherein the cermet heating element 1 is Cylinder, the flange 2 is a ring body, the glaze 3 is solid or liquid; an annular notch 21 is provided on the inner side of the upper end of the flange 2; the cermet heating element 1 and the flange 2 are placed on the positioning tool 4 Among them, the flange 2 is set outside the cermet heating element 1, and the flange 2 is kept in a horizontal state; the glaze 3 is placed in the annular notch groove 21; the positioning tool 4, the cermet heating element 1, the flange 2 and the glaze 3 put them together into a tunnel furnace for sintering; after cooling, the connecting piece between the cermet heating element and the flange is obtained.
[0023] Furthermore, b...
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The invention discloses a metal ceramic heating body and flange connecting method. The metal ceramic heating body and flange connecting method comprises the following steps that a to-be-connected metal ceramic heating body, a to-be-connected flange and glaze serving as a connecting medium are provided, wherein the metal ceramic heating body serves as a cylinder, and the flange serves as a ring; anannular notch groove is formed in the inner side of the upper end face of the flange; the metal ceramic heating body and the flange are placed in a positioning tool, the flange sleeves the metal ceramic heating body, and the flange is kept in a horizontal state; the glaze is placed in the annular notch groove; the positioning tool, the metal ceramic heating body, the flange and the glaze are placed in a tunnel furnace to be sintered; and after cooling, a metal ceramic heating body and flange connecting piece is obtained. The glaze is adopted as the medium to connect the metal ceramic heatingbody with the flange, since the heating temperature of the metal ceramic heating body cannot exceed the glaze melting temperature, after frequent temperature changes of the metal ceramic heating body,the situations of cracking and the like cannot happen to the glaze, and the sealing performance is good; and the glaze is not prone to being oxidized by air and is attractive.
Description
technical field [0001] The invention relates to the technical field of cermet heating elements, in particular to a method for connecting a cermet heating element to a flange. Background technique [0002] The cermet heating element has the advantages of corrosion resistance, high temperature resistance, long life, high efficiency and energy saving, uniform temperature, good thermal conductivity, fast thermal compensation speed, etc., and does not contain lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, polybrominated biphenyls Harmful substances such as ethers are becoming more and more popular. In addition to the integrally formed main structure of the cermet heating element, a flange structure will be added to the outside as needed. At present, ceramic glue or silica gel is mostly used for bonding between the cermet heating element and the ceramic flange, and these glues are easy to crack after frequent temperature changes, resulting in poor sealing ...
Claims
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IPC IPC(8): F27B9/36F16L23/00
CPCF16L23/00F27B9/36
Inventor 黄晓东
Owner 珠海华宇宏瑞科技有限公司