The joining of different materials is required for industrial application to utilize the hydride structures with attractive advantages such as superior strength weight ratio, low cost, high tensile and less component. Specifically, Al-Cu composite material widely used in foil conductors a transformer, electrical connectors, windings capacitors tubes heat exchangers. However, or spot welding Al ...

In this research the interface structure of dissimilar joint between AISI 4130 and AISI316L steels produced by GTAW process was evaluated. ERNiCr-3 was used as a filler metal for this joint. After welding the microstructure of different areas including weld metals, heat affected zones and interfaces were studied by optical microscope (OM), scanning electron microscope (SEM) and energy dispersiv...

Nickel-based superalloys exhibit excellent high temperature strength, corrosion and oxidation resistance creep resistance. They are widely used in applications aerospace, power petrochemical industries. The need for economical efficient usage of materials often necessitates the joining dissimilar metals. In this study, welding between two different nickel-based superalloys, Inconel 718 600, was...

Abstract There are several possibilities for establishing a cohesion joint between dissimilar metals. In the case of thin sheets, ultrasonic welding process is suitable. This can establish rapidly, with low heat input sheets. The authors have tried to determine optimal parameters copper and austenite stainless steel joining by using an experimental method joining. Suitable results were obtained...

• Chipping, sledging and hammering on metal, stone or concrete • Use of manual, pneumatic and power impact tools • Caulking, brushing and grinding • Drilling, scaling and scraping soldering and casting hot metals • Handling acids, caustics and creosoted materials • Gas welding, cutting and brazing • Drilling overhead • In environments of excessive dust • Electric arc welding and cutting, and ot...

BACKGROUND Welding can produce dangerous fumes containing various metals especially carcinogenic ones. Occupational exposure to welding fumes is associated with lung cancer. Therefore, welders in Gas Transmission Pipelines are known as a high-risk group. This study was designed to determinate the amounts of metals Cr, Ni, and Cd in breathing zone and urine of welders and to assess the possibili...