We provide a variety of welding services for a wide range of industries.
PCW offers many options in Laser Welding technologies as well as MIG, TIG, GTAW, GMAW,
FCAW, and Silver Solder welding processes through a highly skilled and certified welding staff.
Laser Welding processes generate light energy that can be absorbed into materials and converted
to heat energy. By employing a light beam in the infrared electromagnetic spectrum, we can
transmit this energy from its source to the work piece using an array of delivery optics, which can
focus and direct the energy to a very small beam spot. The typical spot size of the laser is
approximately .010” in diameter. The focal point can be adjusted above or below focus; these
techniques will affect both weld penetration and width of the weld signature, which is very important
depending upon joint design and application. The speed of welding is proportional to the amount of
power supplied but also depends on the material type and thickness of the work pieces. Laser
Welding may be used in a continuous or pulsed mode depending upon the type of Laser Welding
Micro TIG welding is a very precisely controlled welding process for welding parts that
cannot be welded with normal TIG welding due to heat input and warping. Micro TIG
welding is performed under a microscope. In Micro TIG welding, specialized power
supplies are used due to their ability to go down to 1/10 of an amp with a stable arc.
Micro TIG welding also utilizes filler wires ranging from .005" to .035". Intricate welds can
be performed with this process while depositing very precise amounts of weld material.
Weld buildups can be as small as .005".
Due to the lower heat input, Micro TIG welding introduces less stress into the part. This is
useful for many applications which produce delicate or intricately engineered parts.
Likewise, micro TIG welding is the process of choice when an engineering change is in
order. Changes in shapes, sizes and geometries can be made in a time-saving and cost-
efficient manner compared to inserting or remaking an entire cavity or die section.
Tig - Gas Tungsten Arc Welding (GTAW)
Gas Tungsten Arc Welding (GTAW), also known as Tungsten Inert Gas (TIG)
welding, is an arc welding process that uses a non-consumable tungsten electrode
to produce the weld. The weld area is protected from atmospheric contamination
by an inert shielding gas (argon or helium), and a filler metal is normally used,
though some welds, known as autogenous welds, do not require it. A constant-
current welding power supply produces energy which is conducted across the arc
through a column of highly ionized gas and metal vapors known as a plasma.
GTAW is most commonly used to weld thin sections of stainless steel and non‐
ferrous metals such as aluminum, magnesium, and copper alloys. The process
grants the operator greater control over the weld more so than competing
processes such as shielded metal arc welding and gas metal arc welding, allowing
for stronger, higher quality welds. However, GTAW is comparatively more complex
and difficult to master, and furthermore, it is significantly slower than most other
Mig - Gas Metal Arc Welding (GMAW)
Gas Metal Arc Welding (GMAW), sometimes referred to by its subtypes metal
Inert Gas (MIG) welding or Metal Active Gas (MAG) welding, is a welding
process in which an electric arc forms between a consumable wire electrode and
the workpiece metal(s), which heats the workpiece metal(s), causing them to
melt, and join. Along with the wire electrode, a shielding gas feeds through the
welding gun, which shields the process from contaminants in the air. The process
can be semi-automatic or automatic. A constant voltage, direct current power
source is most commonly used with GMAW, but constant current systems, as
well as alternating current, can be used. There are four primary methods of metal
transfer in GMAW, called globular, short-circuiting, spray, and pulsed-spray,
each of which has distinct properties and corresponding advantages and
Flux-cored Arc Welding (FCAW)
Fluxcored Arc Welding (FCAW or FCA) is a semi‐automatic or automatic arc
welding process. FCAW requires a continuously‐fed consumable tubular electrode
containing a flux and a constant‐voltage or, less commonly, a constant‐current
welding power supply. An externally supplied shielding gas is sometimes used, but
often the flux itself is relied upon to generate the necessary protection from the
atmosphere. The process is widely used in construction because of its high welding
speed and portability.
Silver Soldering is a method of joining metal parts using nonferrous filler metals with
high melting points such as copper, silver, and aluminum. Unlike welding, which joins
separate pieces of metal in a continuous metallic bond, the parts are not melted. Silver
soldering consists of high‐temperature formulations (usually containing silver)
which are used for high‐temperature operation or for first assembly of items which
must not become unsoldered during subsequent operations. Alloying silver with
other metals changes the melting point, adhesion and wetting characteristics, and