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Probe for the ultrasonic inspection of molten aluminum

  • US 4,261,197 A
  • Filed: 09/12/1979
  • Issued: 04/14/1981
  • Est. Priority Date: 09/12/1979
  • Status: Expired due to Term
First Claim
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1. An improved probe for conducting ultrasonic mechanical energy to and from an aluminum melt in a process of inspecting molten aluminum, where said probe comprises:

  • (a) A body member made essentially of titanium and having first and second opposite ends, each of which has a substantially flat end surface which is substantially perpendicular to the longitudinal axis of said body member, where said first end forms a working tip for said probe, said working tip being about 1/8 to 3 inches in length, said body member being further defined by a lateral portion adjacent said working tip, where said lateral portion defines a cooling zone for said probe; and

    (b) Cooling means, such as a water jacket or the like, for extracting heat at said cooling zone to cool said probe, where said cooling means has the capacity to cool said probe in a manner such that when said working tip reaches a thermal equilibrium upon being immersed in an aluminum melt at a temperature in the range of about 675°

    to 825°

    C., there exists a negative temperature gradient of at least 200°

    C./in along the longitudinal axis of said body within said cooling zone, and the temperature of said second end of said body member is maintained at 300°

    C. or less.

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