6 documents found, page 1 of 1
Application of low Ms temperature consumable to dissimilar welded joint
Saraiva, Daniel Lucena; Béreš, Miloslav; Silva, Cleiton Carvalho; Nunes, Cristiana dos Santos; Silva, Jean Jefferson Moraes daThe welding of dissimilar joints is very common in systems used in oil exploration and production in deep sea waters. Commonly involves welding of low carbon steel pipes with low alloy steel forgings both with inner Inconel clad. The forged steel part undergoes a process of buttering with Inconel or carbon steel electrode before the weld of the joint. The buttering process is followed by a process of residual s...
Tensile Properties of Duplex UNS S32205 and Lean Duplex UNS S32304 Steels and t...
Tavares, Sérgio Souto Maior; Pardal, Juan Manuel; Abreu, Hamilton Ferreira Gomes de; Nunes, Cristiana dos Santos; Silva, Manoel Ribeiro daDuplex stainless steels are high strength and corrosion resistant steels extensively used in the petrochemical and chemical industries. The aging at 475 °C for long periods of time provokes embrittlement and deterioration of corrosion resistance. However, short duration aging at 475 °C may be used as heat treatment to improve mechanical resistance with small decrease in the other properties. In this work the fl...
The Welding of Dissimilar Joints with Low Temperature Martensitic Transformatio...
Nunes, Cristiana dos Santos; Abreu, Hamilton Ferreira Gomes de; Silva, Cleiton Carvalho; Miranda, Hélio Cordeiro de; Novotný, LadislavThe welding of dissimilar joints is very common in systems used in oil exploration and production in deep waters. This commonly involves welding low carbon steel pipes with valves, pumps or other pipes, all of them made of alloy steel. Inconel has been used in such welding as filler material; however, this welding is preceded by a process of buttering in the low alloy steel side and a stress relief heat treatme...
Investigação metalográfica da zona afetada pelo calor da estrutura soldada de a...
Nunes, Cristiana dos Santos; Vieira, Regina Coeli Araújo; Avelino Júnior, Archimedes Fortes; Fonseca, Maria da Penha CindraThe welding of dissimilar joints is very common in systems used in oil exploration and production in deep waters. Commonly involves welding low carbon steel pipes with low alloy forged steel, more often, with cladding of Inconel. An alternative technique for reducing residual stresses is to use a filling material that during the cooling process undergoes a displacive transformation at a relatively low temperatu...
Aços Maraging classe 350 e 250 como metal de solda nas juntas dissimilares usad...
Nunes, Cristiana dos SantosThe welding of dissimilar joints is very common in systems used in oil exploration and production in deep waters. Commonly involves welding low carbon steel pipes with other pipes, valves, pumps, all made of alloy steel. It has been used in these welding Inconel electrodes, however, is made a buttering process with carbon steel electrode in low alloy steel side. An alternative technique to reduce the residual s...
Caracterização de fases e análise de trincas em junta soldada de Inconel 625 e ...
Nunes, Cristiana dos SantosThe discoveries of new oil deposits with right rates acidity caused the refining units of crudes use facilities modified and adapted to this condition. In order to increase the corrosion resistance and reduce the risk of failure during the operation are used alloy steels of type Cr-Mo, A-213 T-9 (9%Cr e 1%Mo) in the tubes in refining plants configuring tubes ASTM A335 GR P 9, as API RP-530, designed for continu...