| 摘要 |
<p>PROBE FOR THE ULTRASONIC INSPECTION OF MOLTEN ALUMINUM An ultrasonic testing probe for molten aluminum comprises a probe body having substantially flat end surfaces, one of which forms a working tip and the other receives an ultrasonic transducer, and cooling means surrounding the body at a location between the two ends. The probe body is composed essentially of titanium and has a working tip of 1/8 to 3 inches in length, while the cooling means is adjacent to the working tip and has the capacity of establishing at equilibrium a negative temperature gradient of at least 200.degree.C per inch along the longitudinal axis of the body when the working tip is immersed in molten aluminum, the second end being maintained below 300.degree.C. JHB-16.8.1982 23421</p> |
