冷压焊接的真空可靠性分析

The reliability analysis about cold pressing welding

电真空器件的制造过程中,在高真空烘烤排气处理后将无氧铜排气管进行封离,应用到冷压焊接。冷压焊接的真空可靠性是电真空器件能否保持真空度的最基本保证,冷压焊接是制造中可靠性要求最高的环节。本文先论述冷压焊接的重要性,然后从无氧铜排气管的选材、表面处理、冷压钳刀口形状等几方面,对影响冷压焊接的真空可靠性进行详细分析,得出提高冷压焊接的可靠性条件。

In the process of manufacturing of electronic vacuum devices , we sealed off the oxygen-free copper exhaust pipe after baking under high-vacuum and in this process we used the cold pressing welding . The reliability of cold pressing welding is the most basic guarantee to maintain the vacuum degree of electric vacuum devices , it is the strictest link during manufacture . In this paper we first discussed the importance of the cold pressing welding , then analyzed the reliability of cold pressing welding in detail from the aspects of oxygen-free copper exhaust pipematerial , surface treatment and the shape of crimping tool blade . At last , we concluded the conditions for improving the reliability of cold pressing welding .