WA Technology President, Jerry Uttrachi, has given
presentations regarding Reducing Shielding Gas Waste and Improving Weld Start
Quality. He presented a
45 minute Session at a Pipe Conference Sponsored by FMA in 2005, resulting in several customers, one purchasing 215 systems over a period of several years.
July of 2005 he presented a summary of a technical paper entitled "Gas
Waste and Weld Start Quality Issues in Common GMAW Shielding Gas Delivery
Systems and Suggested Solution," for the International Institute of Welding
(IIW) at their 58th Annual Assembly and International Conference held in
Prague, Czech Republic. The paper was published in their proceedings.
The photo left shows him presenting a summary in IIW Commission XII.
He was also asked to
present the paper at the International Conference held later in the week
to allow all of the over 500 scientists and engineers present from all parts of
the World to attend. The information presented was very well received with
positive comments about the Gas Saver System.
The theory of why
shielding gas is wasted and the derivation of gas waste equations were
presented. The benefits of maintaining system pressure to provide
automatic flow compensations for restrictions was covered in detail in the
paper. Providing a controlled amount of extra gas at the start was discussed.
Limiting the surge flow velocity at the weld start to avoid aspirating air into
the shielding gas stream was also covered. The subtleties of starting gas
flow and shielding gas waste were an issue in all parts of the World.
2007, as the American Welding Society President (a volunteer position,) Mr.
Uttrachi gave the Keynote Speech in Technical Conferences in Peru, Denmark
and South Korea. (He also visited China, Japan, Croatia, France and
the UK as the AWS ambassador and gave 20 AWS Section talks in the USA!)
fabricators and welding researchers from around the world heard his
technical presentation regarding Optimizing MIG Shielding Gas Use,
Eliminating Waste and Improving Weld Start Quality. Although it
contained a bit more math than is presented on this site, the "Bottom Line"
is the same all over the world. They are wasting considerable
shielding gas and not getting weld start quality that is possible!
An interesting question was asked at
one conference. Click to see what is was and the answer!
Free Technical Paper, "MIG
CLICK ICON for PDF DOWNLOAD
"Lean Welding Manufacturing" Learning Program
Gas Use and Eliminating Waste," includes the key points of this presentation in
a Do-It-Yourself 7 Module Program