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公开(公告)号：US4952810A
公开(公告)日：1990-08-28
申请号：US397710
申请日：1989-08-23
CPC分类号： F17C3/085 , F25D19/006 , G01J5/061 , F17C2201/0119 , F17C2203/0395 , F17C2203/0629 , F17C2203/0648 , F17C2223/0161 , F17C2227/0339 , F17C2270/0509
摘要： An infrared detector assembly (10) of the type used in munitions and night vision systems having an improved coldfinger assembly (42). Such detector assemblies (10) include a tubular coldfinger (22) which is surrounded by a vacuum and an end-cap (28) mounted to the coldfinger tube (22) to define a cold end (24) which supports the infrared detector array (30) and related components. In accordance with this invention, the coldfinger tube (22) is a thin-walled titanium cylinder and the end-cap (28) is made of tungsten. The components are metallurgically bonded at the cold end (24) by an active brazing alloy deposited during vacuum furnace brazing. The titanium coldfinger (22) provides the necessary bending stiffness to support cold end components. The tungsten end-cap (28) provides a low distortion, thermally stable focal-plane. The metallurgical bond (46) provides for a hermetic seal which inhibits structural distortion during brazing, and during cyclical cooling of the detector assembly (10).
摘要翻译： 一种用于弹药和夜视系统的红外探测器组件（10），具有改进的冷锋组件（42）。 这种检测器组件（10）包括由真空包围的管状冷指针（22）和安装到冷引导管（22）的端帽（28），以限定支撑红外检测器阵列的冷端（24） 30）和相关组件。 根据本发明，冷引导管（22）是薄壁钛圆筒，端盖（28）由钨制成。 组件通过在真空炉钎焊期间沉积的活性钎焊合金在冷端（24）上冶金结合。 钛冷手指（22）提供必要的弯曲刚度以支持冷端部件。 钨端盖（28）提供低失真，热稳定的焦平面。 冶金结合（46）提供了一种在钎焊期间以及在周期性冷却检测器组件（10）期间抑制结构变形的气密密封件。
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公开(公告)号：US4919291A
公开(公告)日：1990-04-24
申请号：US124220
申请日：1987-11-23
CPC分类号： B23K20/16 , B23K35/007 , H01J9/40
摘要： A hollow, elongated tip-off tube 12 is comprised of a copper substrate having a layer of gold plating diffused into the surface thereof. The gold is applied over a nickel strike and the tube is heated within a vacuum furnace to diffuse the gold into the copper surface. The gold diffused inner surface of the tube is found to have superior self-welding characteristics and increased strength and durability. The nobility of the inner surface resists the formation of an oxide coating thereon which eliminates the need to clean the inner surface of the tube before pinch-off. Thus, the entrapment of residual cleaning chemicals within the pinch-off area is avoided.
摘要翻译： 中空的细长的折回管12由具有扩散到其表面中的镀金层的铜基底构成。 将金施加在镍罢工上，并且在真空炉内加热管以将金扩散到铜表面。 发现管的金扩散内表面具有优异的自焊特性和增加的强度和耐久性。 内表面的高贵度抵抗了其上的氧化物涂层的形成，这消除了在夹紧之前清洁管的内表面的需要。 因此，避免了在夹断区域内残留的清洁化学品的捕获。
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