FIELD: metallurgy; may be used in casting of large blades of gas-turbine plants of various applications. SUBSTANCE: method includes melting and pouring of high-temperature alloy from melting crucible to hot ceramic mold. Melt in fine streams or drops gets through holes to mold hollow. After filling of mold volume by 2-9%, process of oriented crystallization is began. For this purpose, mold is lowered from zone of heating to zone of cooling. Dropwise or stream supply of melt eliminates mixing of melt before the front of crystallization and provides for obtaining qualitative structure. Excluded also is destruction of ceramic mold. EFFECT: higher efficiency. 5 cl, 6 dwg
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Authors
Dates
1998-12-27—Published
1998-02-11—Filed