Repair Welding of the Massive Cast

Massive hemoptysis due to welding fumes

UNLABELLED Many pulmonary problems such as lung cancer, occupational asthma, and pneumoconiosis have been described due to welding in the literature until now. This is the first case report of alveolar hemorrhage due to welding fumes presented with massive hemoptysis. We report a rare case of massive hemopthisis associated with welder's lung, with a discussion based on a review of the literatur...

Consumables for repair and maintenance welding

Design and Implementation of a System for Autonomous Repair Welding

This paper presents the design and implementation of a system applicable for autonomous repair welding on huge forming tools, often realized as blacksmith’s swages. The automated repair welding process restores the tool with its desired shape independent to the tools actual state of abrasion. The core of the system is provided by a computer connected to sensors and an eight axis welding robot. ...

Effect of Welding Parameters on Microstructure and Mechanical Properties of Cast Fe-40Al Alloy

Friction welding of cast Fe-40Al alloy was carried out at 1000 rmp for various friction times, friction pressures, and forging pressures. The microstructures of the interface of welded samples were analyzed by optical and scanning electron microscopy (SEM). Micrographs demonstrated that excellent welding formed continuously along the interface, except for samples welded for 3 s. Chemical compos...

The effect of repeated repair welding on microstructure and mechanical properties of quenched and tempered steel A517

A517 is a low alloy high-strength steels that due to its high strength, toughness and weldability is used in ship building and submarine hulks. The welded areas of this steel often require repairs. In this study, the effect of number of welding repair on microstructure and mechanical properties of A517 steel is studied. Four samples (samples without repair, once repaired, twice repaired, and th...