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

Explain the gauge pressure, Explain Gauge Pressure (P gauge ) Gauge Pre...

Explain Gauge Pressure (P gauge ) Gauge Pressure is the pressure of a fluid contained in a closed vessel. It is all time more than atmospheric pressure. It is calculated by an

Theory of machines, What'' is balancing and vibration in machines Need of ...

What'' is balancing and vibration in machines Need of balancing? Causes of vibration and their harmful effects and remedies?

#power plant, Components of power plant &it''s functions

Components of power plant &it''s functions

Heat conduction duhamels method, Procedure for solving a problem using duha...

Procedure for solving a problem using duhamels method

Joint details and preparations, Joint Details and Preparations Joints s...

Joint Details and Preparations Joints shall be prepared by machining, flame cutting with grinding to bright metal or air-carbon arc gouging with grinding to bright metal such t

Operation and maintenance of plant, Process units should have staggered acc...

Process units should have staggered access from at least two directions. The space between battery limits of adjoining units should be kept clear and open. Do not consider the clea

Kennedy Theorem, the movability of 3 bar mechanism is zero then how can we ...

the movability of 3 bar mechanism is zero then how can we comment on instantaneous centre of it?

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