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

Direct current, Direct Current Using direct current, the tungsten el...

Direct Current Using direct current, the tungsten electrode may be connected to either the negative or the positive terminal of the supply of power. In almost all cases, ele

Legal aspects of entrepreneurship development , Legal Aspect :  Few simple ...

Legal Aspect :  Few simple steps to take care of legal aspects of setting up a business are to register your unit with concerned organisation, check out the labour laws that would

Determine strap beam with suitable demonstration, Determine strap beam with...

Determine strap beam with suitable demonstration. Here observe that R e becomes greater than P e by a magnitude of V while R i becomes less than P i by a magnitude equal to

Determine a least square geometric curve, Determine a least square geometri...

Determine a least square geometric curve y = ax b to the following data : x:  1   2  3   4   5 y: 0.5  2 4.5 8 12.5 Fit a straight line y = a + bx to the following data b

Steam engine main parts, STEAM ENGINE MAIN PARTS:    Connecting Rod: ...

STEAM ENGINE MAIN PARTS:    Connecting Rod: It connects cross head with crank on other side.    Crank Shaft: It is output shaft on which the mechanical power which is a

Types of registration in entrepreneurship development, Types of Registratio...

Types of Registration Provisional Registration Certificate ( PRC ) This is given for the pre-operative period and enables the units to obtain the term loans and worki

Violation of k-p statement - thermodynamics, V iolatio n of K-P Statement...

V iolatio n of K-P Statement: A HE produce work 'W' by exchanging the heat with one reservoir at temp. T 1 only. The K-P statement is violated.   H.P. is extract

Describe span of bridge and varying depth, The press tressed bridge structu...

The press tressed bridge structure would look like as shown below,   The following factors influences the decision to select the particular prestressing, 1/Span of br

Corrosion in boiler, Q. Corrosion in Boiler? With proper BFW treatment,...

Q. Corrosion in Boiler? With proper BFW treatment, and maintaining pH within a certain range (9.2 to 9.4) and removing oxygen from the system, a stable passive film will be for

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