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ELECTRO GAS WELDING
This process is an extension of MIG I MAG welding, designed for single pass vertical welding of steel plates in the thickness range of 10 to 38 mm. The two plates are held vertically with a gap of 12 mm regardless of plate thickness. The wire electrode is introduced downwards into the cavity formed by two plates to be joined and two movable water-cooled copper chill blocks. The cavity is kept free of air by the shielding gas usually a mixture of argon and CO2. Wire diameter may vary from 1.6 mm to 2.4 mm. The welding head is suspended from elevator mechanism, which provides automatic control of vertical travel speed during welding. The welding head is automatically raised as the molten metal is building up. The welding is completely automatic. This technique is used in shipyards and in fabrication of storage tanks and large diameter pipes. Two such indigenous machine have been developed in WRI and they are used in BHEL, Bhopal & Haridwar for fabrication of structure by welding in the vertical direction.
Laser Welding Applications with Low Power For a lap weld joining of AISI 416 stainless steel cap to a AISI 310 stainless steel body, CO 2 Laser with a 575 watts beam out
Determine reactions on compound beams: Determine reactions at the support A , B , C , and D for arrangement of compound beams shown in the figure given below.
a steel bar is 900 mm long
Diffrence between external diameter and internal diameter: A compound tube is built by shrinking one tube on another, the ultimate dimension being, 80 mm internal diameter, 16
PROJECTS
The body, suspension and engine mounting system of a vehicle may be idealised as a three degree of freedom system consisting of a bar of mass 1400 kg and the centre of mass at G, 1
General Phase of Radial Drilling Machine Steps- 1. Prepare a strong foundation for the value study. In radial drilling machine hole can not be produce in any angle.
Hydraulic fluid has to pass a dissimilar set of standards than motor oil. Motor oil has tackifiers, lower sulfur content, and other ingredients that could solve harmful to the seal
IGES application protocol: In the year 1977, the three authors of The Initial Graphics Exchange Specification were identified collectively for their contributions to the growt
An engine uses air as the operating substance. At the beginning of compression the pressure is 90 KN /m 2 and the temp. is 40 0 C. During the adiabatic compression, the volume is
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