| Ceramic-to-Metal-to-Seal is one key production craftwork of vacuum electronic parts of an apparatus, its quality playing a decisive role to airtight of products, concerning the properties of products and service life directly. With technology of One-Seal-Exhaust being applied in vacuum switch-tube, high request about ceramic-to-Metal-to-Seal is put forward. In order to improve the reliability and service life of the vacuum electronic parts of an apparatus, to meet demands of production technical development , I have researched the technology of Ceramic-to-Metal-Seal.Stainless steel has been broad applied because of its exceeding machine and anti-corrupt performance and low price . In order to generalize stainless steel applying on seal , the seal technique and seal stress have been studied about ceramic and stainless steel .The seal about ceramic and stainless steel has been succeeded to realize by antitheses seal .The connecting intension has been put forward .The various factor that include the performance of commonly metal and ceramic, and the connectible structure, and the craft of Ceramic Metallization influences to Ceramic-to-Metal-to-Seal has been analyze. The process of the seal stress forming has been analyzed , that mainly comes from its variance of hot coefficient of expansion of ceramic and metal in seal connect. That seal stress influences to the intensity of seal connect has been studied. Generally, the seal connect stress being always harmful to the quality and the reliability of seal parts, it will decline the strength of the seal parts when the stress increases.The advanced technology of finite element analyzing has been utilized, having been set up the model of finite element, the stress of Ceramic-to-Metal-to-Seal of various conditions having been calculated. In order to explore reasonable structure of seal , I have put up analyzing and comparing to the various stress. |
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