Metal transfer in co2 welding, Mechanical Engineering

Assignment Help:

METAL TRANSFER IN CO2 WELDING

In CO2 welding, two distinct types of metal transfers are identified viz. short circuiting transfer and free flight globular transfer.

Short Circuit Transfer: When the welding voltage and the current are low, the mode of metal transfer would be of short circuiting type. In short circuiting mode, metal transfer occurs from tip of the wire electrode to the job whenever the wire tip touches the weld pool. The arc is extinguished during the short circuit period and is re-ignited after the short circuit is cleared. Short circuiting transfer is used for joining thin sheets, welding out of position and root pass welding of tubes and pipes.

Free Flight Transfer:  When the arc voltage and current are high, the metal droplets are transferred non axially as large globules and this is called non axial free flight transfer. The non axial free flight transfer produces deep penetration. Hence, this mode of transfer is used for welding thick sections in down hand and horizontal positions.


Related Discussions:- Metal transfer in co2 welding

Spring, strain energy = m2l/2Ei

strain energy = m2l/2Ei

CFD PHOENICS, expert with PHOENICS software experience for CFD free convect...

expert with PHOENICS software experience for CFD free convection

Axis of symmetry, Axi s of symmetry If in diagram half part of diagram...

Axi s of symmetry If in diagram half part of diagram is mirror image of next ½ part, then there is a symmetry in diagram. The axis at which symmetry is create, called as axis

What is the alloy of tin and lead, A tin and lead alloy is commonly known a...

A tin and lead alloy is commonly known as solder. Usually solder is a wire with a rosin core used for soldering. The rosin core acts as a flux.

Friction welding, FRICTION WELDING In this, friction is employed to genera...

FRICTION WELDING In this, friction is employed to generate heat b/w two sliding or rotating metal surfaces. This process is usually carried out by placing the pieces to be welded

Determine the stress in the meridional direction, Determine the stress in t...

Determine the stress in the meridional direction: A doubly curved shell of thickness 8 mm is filled through a liquid under an internal pressure of 2.0 N/mm 2 . At a specific p

Over-hanging and cantilever beam - support reaction , Over-Hanging and Cant...

Over-Hanging and Cantilever Beam: Over-Hanging Beam: The beams on which one end or both ends are overhang are called as overhanging beam. 3. Cantilever Beam:

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd