FIELD: plastic metal working, possibly manufacture of copper sleeves of molds used at metal continuous casting. SUBSTANCE: method comprises steps of cutting copper ingot made in electron-beam remelting furnace by piece blanks with use of band saw; milling prepared piece blank along its contour, chamfering it and then heating until forging temperature; upsetting blank; stretching it to circle; piercing opening in blank and hot working of said opening by means of drift; after subsequent expansion of blank stretching it on mandrel for several passes. EFFECT: enhanced factor of metal usage, improved operational strength of molds. 12 dwg
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Authors
Dates
2004-05-20—Published
2002-06-17—Filed