The shielding gas is very important too. Mixtures with helium improved weld speed and reduce the porosity. See the attach:
Rui Fernandes Pinho
Divisão de Gases Industriais
Desenvolvimento de Aplicação de Gases
Linde Sogás, Lda.
Travessa Joaquim Dias Salgueiro, Nº 44
4470-416 Vila Nova da Telha, Portugal
Phone + 351 22 999 8380, Fax: + 351 22 996 4039
Mobile + 351 91 473 9197
rui.pinho@pt.linde-gas.com, www.linde.pt
| Kisan Gamane <kisankrishna1506@gmail.com> Sent by: materials-welding@googlegroups.com 03-11-2010 06:40
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Any body can suggest to avoiding porosity in aluminium welding.
material is 5083 aluminium alloy. i have used pure argon gas as shielding gas in GTAW process.
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किसन गामणे
नाशिक
जन्मलो म्हणून जगणार नाही
अन असाच राखेत विरणार नाही...
ठसे सोडूनी जाईन जीवन काठावरती
आल्या लाटा कितीही , मिटणार नाही ...
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