Utilização dos arames tubulares AWS E309 e AWS E71T para a recuperação das paredes de digestoras utilizados no processo kraft de celulose: estudo da viabilidade econômica utilizando os parâmetros da taxa de corrosão

Abstract

The mechanical metal industry uses large amounts of metallic materials. These materials are subjected to various efforts, therefore, there is the need for standardized testing, to prevent accidents , corrosion and unexpected stop of the production. The work then aims to verify the economic viability of recovery, by coating welding, the batch digester walls used in the kraft process with cored wires AWS E309 LMo and AWS E71T. Thus seeks to show what material is most economically advantageous tender in return for an increase in the lifetime of the material by decreasing the corrosion rate. Throughout this, data obtained through practical experiments will be analyzed. The following work will enable an assertive choice of the metal material for coating the side of the digester.