METHOD OF PREPARATION cartridges and hollow ingots billets electro-slag remelting of alloyed steels and alloys For Pilger rolling tube

摘要

1. A process for the preparation of the hollow-cores and preforms electroslag remelting ingots of alloy steels and alloys by pilger rolling tubes comprising heating billets, ingots solid or hollow billets of electroslag remelting and made of carbon steel grades nozzles - backing rings, the outer diameter of which is equal to diameter or more sleeves having a cylindrical and conical sections to plasticity temperature, firmware preforms and ingots of continuous blanks electroslag refining mill in transverse a helical rolling sleeve dressing on mandrel backer carbon rings of the cylindrical portions to the arbor rings dressing on mandrel sleeves or hollow ingot billets electroslag remelting joint rolling sleeves or hollow ingot billets of electroslag remelting and backer carbon rings in the commodity or steel making pipe with breeding pilger heads on skid carbon ring, wherein the carbon skid rings are cylindrical and conical portions whose dimensions are determined determined from the expression L = KD, L = KD, L = KD, D = KD, D = KD, D = KD where L- total length of the carbonaceous rings mm; D- outer diameter of the sleeve or the hollow-ingot billet ESR, mm; L- length of the cylindrical portion of the carbonaceous rings mm; L- length of the conical portion of the carbonaceous rings mm; D- outer diameter of the carbon ring, mm; D- inner diameter of the carbon ring, mm; D- outer diameter of the tapered end of the carbonaceous rings mm; D- inner diameter of the sleeve or the hollow-ingot billet ESR, mm; K = 0.5-0.7 - great value ratio which relate to the core or