| 摘要 |
<p>The present invention relates to a process of fabricating temperature probes for measuring temperatures within the range of -40 to 1100°C in analytical and medical equipment, in chemical industry equipment, in household The present invention relates to a process of fabricating temperature probes for measuring temperatures within the range of -40 to 1100 °C. The process comprises low-pressure injection molding of ceramic insulators such as electrofused magnesite, aluminum oxide, aluminum nitride or mixtures thereof, removing the binder and presintering in a protective atmosphere at a temperature of 800 to 1200°C in an electric furnace, welding two wires (4,5) made of two different alloys NiCrSi and NiSi (type N), and NiCr and Ni (type K), respectively, inserting and positioning the welded wires into the injection molding tool and overmolding the welded junction (1) of the measuring portion of the temperature probe, assembling the ceramic insulators, inserting into a closed protective sheath (6), sealing with a PTFE sealant and sinking the high temperature probe.</p> |
