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Dan’s Certified Welding, Inc.
When you are looking for highly specialized welding that is certified, of the highest quality, when
it really counts this is where you go.
Gas Tungsten Arc Welding or TIG Welding
DCWI specializes in the welding process called “Gas Tungsten Arc Welding” aka “GTAW,” or
also “Gas Tungsten Arc” aka “GTA.” The other names that are used to describe this process
are “Tungsten Inert Gas” aka “TIG” Welding. Some also refer to this as “heliarc welding” and
“fusion welding.” This process is a very clean process of welding.
Most when they think of welding think of a large almost “sparkler” looking thing from the 4th of
July that would weld metal together with sparks flying everywhere, a process that is referred to
as “Arc Welding” or “SMAW” (Shielded Metal Arc Welding). This is not the case with the
GTAW process. The welds that are produced are very clean with no slag (the stuff that chips off
the weld produced by SMAW). This is why this is the chosen process most of the time to create
a weld that is needed in a critical application.
The weld is produced using a torch that has a tungsten electrode to melt the metal (tungsten is
what is in the old incandescent lights that lights up) and argon gas to protect the molten metal
from our atmosphere. A filler material is added by hand to the molten metal to add strength and
size to the weld. To do this properly it takes a craftsmen with surgical like precision to do the
work. It takes many years of experience for a welder to get to the point of being a master
craftsman.
Micro TIG Welding
In 1999 DCWI added the process called “micro tig welding.” This process takes the GTAW or
TIG process to another level of surgical precision. This process is used especially in the mold
industry where repairs are needed with a minimum of weld build up. The weld is performed
using a microscope and a custom small tig torch. The filler material wires used in this process
can go down to .005.” (5 thousands of an inch) The use of the micro tig process is critical to the
repair of molds as it leaves minimal to non-existent sink. (Evidence of the weld where the
section next to the weld is lower and then rises back up to the original height of the material)
Pre heat and post heat furnaces are used as required in helping prevent the tools steels from
cracking. The filler materials are purchased to match the base metal material and/or match the
base metal hardness.
The micro tig process also works extremely well in the aircraft industry when the parts are made
from very thin materials. DCWI welds on hundreds of parts that are only .016 thick. These parts
are highly critical as the largest defect allowed when radiograph inspected is .005.
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2. Orbital Tube Welding
In 2006 DCWI added “orbital tube welding” as this became a need in the welding of highly
critical aircraft hydraulic lines made of 21-6-9 stainless steel tubing. This process also uses the
GTAW or TIG process but is done by a machine. The orbital tube process works extremely well
in applications that require radiograph inspection with very tight tolerances.
DCWI’s precision craftsmen are qualified by being tested to AWS D17.1, MIL-STD-1595A,
AMS-STD-1595, BAC 5962 & BAERD-GEN-010. The materials that DCWI is qualified for are
Steel (groups 1A & 1B), Stainless Steels (groups2A & 2B), Nickel Alloys (groups 3A & 3B),
Aluminum (group 4) and Titanium (group 6).
These welder qualifications allows DCWI to certify the welds to BAC 5975, DPS 10.301,
MIL-STD-2219, AMS-STD-2219, AWS D17.1, PS 22201, PS 22250, BAPS 172-034,
P8TF3,GAMPS 2309, RPS 11.14 and others.
Certification is Great, But Great Customer Experience is Better
The customer experience is highly important to us. We want to be able to help our customers
understand all the nuances that are related in welding. Consulting with the customer prior to
embarking on creating the craftsman type of weld is very important. From helping design
tooling, understanding what the customer needs are and helping our customers meet and
exceed the specification is the goal.
DCWI has been a Boeing approved supplier for over 30 years and is also approved by
numerous other companies.www.danscertifiedwelding.com
Dans Certified Welding Home
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