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METAL TRANSFERThe continuously fed electrode wire is melted in the arc heat and the droplets thus formed at the wire tip are transferred to the weld pool. The way in which material is transferred from the tip of the consumable electrode into weld pool has a significant influence on the overall performance of the process. The various types of metal transfers have been classified int o groups. The basic modes by which metal is transferred from the electrode to the weld pool are short circuiting transfer (dip) and free flight transfer. In free flight transfer an arc is maintained between the electrode and work piece and t he met al is transferred across the arc in the form of droplets. The common free flight modes are globular and spray. These modes of metal transfers are controlled by the various forces that are acting on the droplet. The electromagnetic pinch force and the surface tension force are considered as the primary forces responsible for the various modes of metal transfer in GMAW process.
Wave motion takes place all throughout nature, from the waves of the ocean to the electromagnetic waves that comprise visible light. Though different types of waves involve differe
Advantages of Laser Welding Process 1) Narrow deep penetration welds capable of being produced in atmosphere. 2) Low thermal distortion - due to less heat input and paral
Consider a fully developed laminar flow of a fluid through a 200 m long and 4 cm diameter horizontal and circular pipe. The density and the viscosity of the fluid are 1400 kg/m 3
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the component of computer integrated manufacturing with the diagram
length of an close belt drive
A steel rod of 20 mm diameter passes centrally through a copper tube of 50 mm external diameter and 40 mm internal diameter. The tube is closed at each end by rigid plates of negli
Introduction to Computer: This covers the major hardware features of computer graphics systems such as video monitors, keyboard, hard copy devices, and other devices for graph
Performance of Heat engine: Performanc e of HP: It is measured by thermal efficiency that is the degree of useful conversion of heat received into work.
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