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 Characteristics and performance requirements of sealing alloy
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| zhangxiaosan |
Geplaatst op 21-06-2021 11:22
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 Guru  Berichten: 9433 Datum van aanmelding: 20.09.16 |
1) The thermal expansion characteristics of the alloy should match those of glass or ceramic in the process temperature range and the service temperature range of the tube. 2) The microstructure of the alloy shall not change within the temperature range; 3) The surface of the alloy should be easy to form a firm and dense oxide film; 4) The melting point of the alloy should be higher than the sealing temperature of the glass; 5) The alloy has good sealing, welding, electroplating and machining properties;free sample API stainless 304 316 spiral welded steel pipe 6) The contents of impure substances (volatiles), inclusions and gases should be as low as possible;253MA Mattress Spring Steel Wire 7) Good plasticity, can withstand cold and hot deformation, easy to make various shapes of parts. Among these performance requirements, the most important are the thermal expansion characteristics close to glass or ceramic and good wettability to glass. These two properties are collectively called alloy sealability.440 Tisco steel 0.3mm to 3mm thickness stainless steel sheet |
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