Approving welders acc to EN287 I have encountered quite strange thing.
In order to make range of approval for TIG welders wider I decided that test welding should be performed on pipe in HL-045 position, W03 material group (yield strength > 360 N/mm2). The joint then shall pass visual and...
Yes!
Shielding gas (argon) is the first priority. Ti being exposed on the ambient air at 400 degrees C within welding almost turns to wite sand( dust)!So the gas to be applied to each surface being heated up to 400 oC! Heat also to be removed as quick as possible!
As for SS+Ti so this will be...
