While net surfing, I found a thesis called
"Keyhole gas tungsten arc welding: a new process variant"
What seemed odd is that the keyhole method is what is commonly used by welders and that is where the writer got his idea. And the nerve to call it "a new process variant".
Then I found a Japanese paper published in 1981.
Key Hole Welding of Aluminium Plate using TIG Welding Process
YASUDA Katsuhiko , HINATA Teruhiko , MIYAMOTO Sakae
Transactions of the Japan Welding Society 12(2), 8-13, 1981-10-01
http://ci.nii.ac.jp/lognavi?name=nels&lang=en&type=pdf&id=ART0003858888
Then I find that a patent has been granted in Australia:
http://www.ipaustralia.com.au/appli...als-welding-and-joining/patents/AU1998096166/
And a publicly listed company floated to develop the "technology".
http://www.k-tig.com/about-k-tig/
Interesting......
"Keyhole gas tungsten arc welding: a new process variant"
What seemed odd is that the keyhole method is what is commonly used by welders and that is where the writer got his idea. And the nerve to call it "a new process variant".
Then I found a Japanese paper published in 1981.
Key Hole Welding of Aluminium Plate using TIG Welding Process
YASUDA Katsuhiko , HINATA Teruhiko , MIYAMOTO Sakae
Transactions of the Japan Welding Society 12(2), 8-13, 1981-10-01
http://ci.nii.ac.jp/lognavi?name=nels&lang=en&type=pdf&id=ART0003858888
Then I find that a patent has been granted in Australia:
http://www.ipaustralia.com.au/appli...als-welding-and-joining/patents/AU1998096166/
And a publicly listed company floated to develop the "technology".
http://www.k-tig.com/about-k-tig/
Interesting......