Hello,
The Porosity could be due to one of the following issues.
1. The purity of the gas. You need to get your gas from trusted and reputable manufacturer. Ensure you are given high purify gas mixture
2. You need to have an analyser to analyse the Oxygen content inside the pipe and this need to be there for at least 4 passes.
3. You need to clean the weld joint area with acetone.
4. You may apply drying of the joint with hot air blower.
5. Welding should be done in an enclose restricted area to reduce wind draught.
Regards.
Rems
IWE Nigeria
On 23 Jan 2018 14:09, "Welding and material" <koswaraabi@gmail.com> wrote:
My name is Abi, I've the problem about mixture gas Ar/N2, each my welder performed welding on te Material DSS which used mixture gas Ar/N2, always occured porosity on each welded. Does it mix gas can cause porosity defect ???????????????--
Thanks
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