Numerical control (NC) is the mechanization of
machine tools that are functioned by accurately programmed commands encoded on
a storage mean, as against to run manually via hand wheels or levers, or
mechanically automated via cams alone. Most NCs today are computer numerical
control (CNC), in which computers play an integral part of the control.
Fuji Electric delivers high-performance power
semiconductors for energy, automotive, information technology, and industrial
applications. IGBTs (Insulated Gate Bipolar Transistor) made my Fuji is used
widely in CNC plasma cutters and welding machines.
Plasma cutting involves cutting a material
using a plasma torch. It is commonly used to cut steel and other metals, but
can be used on a variety of materials. In this process, gas (such as compressed
air) is blown at high speed out of a nozzle; at the same time an electrical arc
is formed through that gas from the nozzle to the surface being cut, turning
some of that gas to plasma. The plasma is enough heated to melt the material
being cut and moves pretty fast to blow molten metal away from the cut.
Arc and tube welding machines are mostly used
in industrial setting for building and repair of the infrastructure. Welding
power supplies are required to create an electric arc between an electrode and
the base material to melt the metals at the welding point. The arc can be
created by either DC or AC current with consumable or non-consumable
electrodes. The welding region is sometimes protected by some type of inert or semi-inert
gas.
Arc welding is popular due to low capital and
running costs. For arc welding, the voltage is directly related to the length
of the arc, and the current is related to the amount of heat input with typical
currents of 50 to 500 amps depending on the size of weld. For arc welding with
low voltages and large currents, a soft switching PWM DC-DC power converter
with Fuji IGBT switches in the primary side of a high frequency transformer is
considered to be the most suitable topology for the welding power supply110,
111. Power losses in the Fuji IGBTs are reduced by using soft switching
resulting in a volume reduction of 59% and weight reduction of 47% compared
with the hard-switching approach. Dynamic welding performance is improved due
to operation at 40-kHz when compared with 13-kHz with hard-switching.
http://www.uscomponent.com had been selling IGBT power transistor modules
since 2001. Thyssen Krupp, OTIS, IXYS, SONY DADC, General Motors, Hongkong Electric
Holdings Limited, Singapore Mass Rapid Transit Trains LTD, Verkehrsbetriebe
Zurich, Czech Airlines, Molex, Cisco, Omron, Good Year Tires, Thai Airasia,
Boeing, Xilinx, LEAR SIEGLER, and General Electric.
http://www.uscomponent.com has a Quality Control Team like no other. This
means that we know how to work hard in order to ensure to make sure that the
quality of all of the parts we’re selling is high. Because we only sell new and
original electronic parts, we provide our customers with a 30-day warranty. And
because we have connections with IGBT power transistor modules manufacturers,
OEMs and distributors, we’re able to pass any savings on to our customers,
giving them a lower price while still providing them with the quality products
they deserve. Our inventory is carefully managed and held to the highest
standards, and stored in a controlled environment warehousing facility.
