Rotary-anode x-ray tube with ga alloy bearing lubricant

Details Rotary-anode x-ray tube with ga alloy bearing lubricant Rotary-anode x-ray tube with ga alloy bearing lubricant

H - Electricity

01

J

313/27

H01J 35/10 (2006.01) F16C 33/04 (2006.01) F16C 33/10 (2006.01)

Patent

CA 1128598

"ABSTRACT": A rotary-anode X-ray tube, comprising a rotary anode which is journalled in a vacuum-tight housing by means of at least one sleeve bearing whose mutually co-operating bearing surfaces are made of W or Mo or of an alloy of W and Mo, are molecularly wetted by a Ga alloy which serves as a bearing lubricant and which has a melting point below 25°C. Wetting is so thorough that the bearing surfaces are completely separated from each other in the loaded condition in the tube. During standstill as well as during rotation, the Ga alloy is not forced out of the bearing, so that the bearing faces cannot become fused. The wear and the production of noise of the bearing are extremely low. The desired, thorough wetting is obtained by making the bearing surfaces as well as the Ga alloy oxide-free before they are brought into contact with each other.

317184

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