production process of lamination rollers fused with increased resistance to degradation and laminati

文件类型：PDF文档
文件大小：1055K
Production Process Of Lamination Rollers Fused With Increased Resistance To Degradation And Lamination Rollers Obtained By This Process. Comprising the steps of : (1) a charge melting furnace with residual liquid metal (a), alloy elements (a b) (a-c) and various scrap, melting to occur (2) load (P) at a temperature that may vary between l2000c and 1550 °c, depending on the constitution of the initial charge; later withdraws a sample of the load (P) to that to be done pre-chemical analysis (3) and, then, in function of the result of the pre-analysis (3) are made corrections (4) chemical composition; next is added (5) to the load (P) sulfur; later, draws a sample of the load (P) to be made new chemical analysis (6) enabling corrections for chemical composition (7); with the liquid metal (gm) ready chemically, this is hollow (8) to a pot of casting, where are also added (hr) rare earth; next, the mixture proceeds to casting (9), giving form to the shell from the semi-finished roll (II)