Hello friends
I am working on the microalloying addition in welding but I am confused how to feed feed metal in form of metal powder during the TIG welding
I think you should fabricate a custom tubular filler rod with a powder core. It must be something like FCAW electrodes, but instead of flux there must be alloying elements powder.
problem in this type of mechanism we cannot control the flow rate of powder. every time we require new electrode which is not possible
but problem in this case on placing the powder on the surface of the material of required thickness the powder get removed away under the pressure force of the shielded gas
Try it with paste technique.....prepare paste with sodium silicate (very few) dry it in oven, measure your weight and decide the amount you want there. Then gently rub with emery paper (1200P). If possible burn the sodium silicate paste to remove gases or adust argon gas flow to escape out the gases. I can suggest more......all these are successfully employed by me. Try hard.
I think it is possible to clad the layer of material to the filler wire during welding
Dinesh sir please tell full procedure with detail. if you have published paper on this please sent me the link of its. and please send me yours email id
Contact me on gmail. [email protected]
I will suggest you the best technique for micro and macro alloying with considerable compromise on macro-micro segregation of elements in weld region.
thnx rathod sir. i had discuss with my guide he refuse to work on paste technique. Sir we are working on real time analysis would you suggest on this
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