TPT March 2008

input power can be reduced by over 22 per cent and cooling water can be saved by up to 50 per cent. The comprehensive solid-state and low- voltage system forms a compact design that reduces the required installation space. A reduction to one-third of the space required by other conventional vacuum tube oscillator models has thus been achieved. The water cooling circulation system (optional) helps to address concerns with water temperature levels and helps prevent problems. In addition to Hisen’s transistor generator, the company also provides quality high frequency machines such as high frequency pipe welding machines (transistor generator and vacuum tube), high frequency induction heaters (transistor generator and vacuum tube), high frequency preheaters for the semiconductor and melamine industry, and high frequency PVC welders.

equipment for non-flat metals (eg H-, I- and angle beam), in addition to tube, pipe and square hollow section. By adding components to a standard concept, the HGG produces machines suitable for companies in steel construction, piping, offshore construction and the petrochemical industry. Over the last 20 years, the company has supplied pipe cutting machines that cover a diameter range from 28mm to 6,000mm. All HGG machines can be supplied with a CAD-CAM system, with connections available for AutoCAD, Pro-Engineer, X- Steel and Solid Designer. The company can also tailor-make other CAD-CAM or post-processing systems. The company’s newly developed products are tested in one of HGG’s subcontracting companies, in order to gain practical experience with the products, and to improve them.

Hisen Enterprises Co Ltd Taiwan 7.1G41

Hisen Enterprises Co Ltd is a manufacturer of transistor generators for pipe welding and heat treatment and high frequency machines. The new transistor generator has been developed using Hisen’s latest technology that incorporates new-type transistor devices. According to the company, it has drastically reduced the size of conventional transistor generators and caters to the diversified applications of tube welding and heat treating. The features of this new generator include a frequency range of 500Hz to 440kHz at an output range of 2-1,000kW, a power factor of 0.95, and power conversion of 90 per cent efficiency. In cases of short heating times, it provides increased output power to solve problems. Because transistors are used instead of vacuum tubes, the level of

Website : www.hisen.com.tw

Website : www.hgg.nl

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