Method and apparatus for casting an electron beam melted metallic material in ingot form

摘要: A method and apparatus for casting a molten metallic material in ingot form are provided wherein the is transported to mold an upper surface temperature distribution of metal pool measured by imaging radiometer which disposed external vacuum chamber enclosing mold, view through sight port. At least one electron beam gun employed direct stream electrons at surface, intensity selectively modulated impingement simultaneously positioned order maintain desired preselected thereby yielding metallurgical structure solidified ingot. The may provide video signal as output, be connected analyzer monitor used image distribution, enabling operator control performing method.