Skip to main content

Re: [MW:19060] Mode of Metal transfer for GMAW

By Materials & Welding
Modes of Metal Transfer:
The mode or type of metal transfer in MIG welding depends upon the current, arc
voltage, electrode diameter and type of shielding gas used. In general, there are
four modes of metal transfer.
 
1.     Dip transfer
2.     Globular transfer
3.     Spray transfer
4.     Pulsed arc transfer.

Since, constant voltage power source is being used, transfer mode depends up on voltage
setting and all the relevant parameter settings are enclosed along with for your study.

As mntioned therin marginal changes could be carried out since there is wide margin in
the amperage setting which  in turn depends on size of wire being used and position of welding.

Hope the details given will be of use to you.

Towards down hand fillet, you can use  globular or spray arc transfer depending up on metal thickness, size of the wire, no. of passes used in case of fillet being heavy.

Sridhar.

------------------------------------------------------------------------------------------------------------------
On Wednesday, 23 October 2013 3:53 PM, Pradip Ghosh <pradipg2@gmail.com> wrote:
Dear Expert,

Can any one tell me that what are the metal transfer mode available for GMAW and what type of metal transfer is suitable for down hand bottom fillet welding in MAG/GMAW


Pradip Ghosh

QA/QC Engineer

Mott Mac Donald

Comments

Post a Comment

Popular posts from this blog

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

By Materials & Welding
Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...
Post a Comment
Read more

[MW:5202] RE: 5200] NDT after PWHT

By Materials & Welding
------------------------------------- Interpretation:  I‑89‑14 Subject:         Section I (1986 Edition, 1987 Addenda), PW‑11,                  NDE Prior to PWHT Date Issued:     December 15, 1988 File:            BC88‑393   Question: Does PW‑11 require that NDE be performed on welds after they have been subjected to the postweld heat treatment required by PW‑39?   Reply: No, unless the conditions described in PW‑11.2.2 exist. ---------------------------------------------- Interpretation:  VIII-1-98-09 Subject:         Section VIII, Division 1 (1995 Edition, 1996 Addenda); NDE                 ...
Post a Comment
Read more

Materails FAQs

By Materials & Welding
Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...
21 comments
Read more