FIELD: plastic metal working, namely, processes for making sleeves. SUBSTANCE: method comprises steps of making cast billet and simultaneously shaping its inner surface by expanding with use of punch and shaping its outer surface by rolling around in roller die at fixation of billet ends. EFFECT: elimination of gaseous and shrinkage porosity, blisters provision of fine structure, enhanced wear resistance and increased useful life period of sleeves. 1 dwg, 1 ex
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Authors
Dates
2001-02-10—Published
1999-03-31—Filed