Infrared emitters of Heraeus Noblelight save time

Flatten sheet metals, like perforated plates for switchgear cabinets or floor slabs, needed a preservation time of approximately 15 minutes with approx. 180 °C. By tests with Heraeus Noblelight one showed that infrared emitter these sheet metals within approximately two minutes of A (openPR) - metal, plastic or wood - many materials are coated today with powder coating. Powder coating is applied as powder, melted by warmth and finally hardened. As heat source hot-air or infrared radiation is differently well suitable, depending upon the characteristics of product and lacquer system. Increasingly also combinations of both heat technologies are used.
Infrared emitters transfer large energy quantities within a short time, without a contact medium. So the furnace length can be shortened or production be accelerated. Rapid melting on of the powder helps to improve the surface quality of the lacquer. Heraeus Noblelight points on the fair PaintExpo to Karlsruhe infrared emitter, which helps, to arrange powder coating processes more efficient.

Infrared systems transfer warmth without a contact medium, by electromagnetic waves, which produce warmth in the material. Infrared radiation is absorbed by powder very well, the powder mass warms up fast. Powder is angeliert substantially faster than in the Umluftofen. Rapid melting on improves the lacquer quality and increases flow velocity. Like that in most cases a substantially shorter furnace is sufficient, or the production speed can be increased. It was shown that the holding or burning time for powder coating can be strongly shortened with the help of the infrared radiation or be saved in some cases even completely. Flatten sheet metals, like perforated plates for switchgear cabinets or floor slabs, needed a preservation time of approximately 15 minutes with approx. 180 °C. By tests in the internal application center with Heraeus Noblelight one showed that infrared emitters heat these sheet metals within approximately two minutes - dependent on plate thickness and lacquer system -. A preservation time was no longer necessary thereafter which lacquer withstood also without preservation time of bending tests, Gitterschnitt and MEK test (methyl ethyl Keton).

Infrared emitters show very short response times, short-wave and carbon emitters of Heraeus Noblelight react within one until three seconds. That makes warmth adjustable and a rapid change of different lacquer types with different burning temperatures in the existing furnace becomes possible. In addition it saves for energy, if the heat source must be turned on only if it is used. Infrared radiation warms up laminar materials evenly and fast, must be usually heated only from a side. Turningsymmetrical parts are usually transported in infrared ovens hanging, as e.g. gas bottles made of metal, which turn then around itself, while they are illuminated by two sides. For an even heat distribution infrared emitters in the infrared oven can be installed in such a way that the surface achievements of the shape and the wall thickness are adapted. At thicker zones more warmth one produces, than at thinner walls. A further advantage over hot-air furnaces is that the powder is not swirled or is not kidnapped. Without air movement also dust inclusions are avoided and thus the quality is increased. Infrared systems are compactly built and can be integrated easily into existing drying lines. That helps to rig hot-air furnaces and accelerate the manufacturing.

Editorship: Dr. Marie Luise Bopp /Heraeus Noblelight GmbH,
Department of marketing/advertisement
Tel +49 6181/35 8547, fax +49 6181/35 16 8547
marie-luise.bopp@heraeus.com
www.heraeus-noblelight.com

Heraeus Noblelight GmbH with seat in Hanau, with subsidiaries in the USA, Great Britain, France and China, belongs world-wide to the market and technology leaders with the production of special sources of light. Heraeus Noblelight exhibited 2005 an annual turnover of 79 million € and employed world-wide 644 coworkers. The enterprise developed, manufactures and drives infrared out and ultraviolet emitters for applications in industrieller production, environmental protection, medicine and Kosmetik, research and analytic measuring procedures.

The precious metal and technology company Heraeus with seat in Hanau is a world-wide active exempt private company, whose business fields cover the ranges of precious metals, Dentalwerkstoffe, sensors, quartz glass and special sources of light. With a conversion of over 9 billion euro and more as 10,600 coworkers in over 100 societies Heraeus is world-wide since more than 150 years a precious metal and a material specialist recognized world-wide. The high innovation and development potential in the enterprise are purposefully promoted intensively and. By customer orientated product developments and purposeful acquisitions Heraeus develops its prominent position within different industrial ranges.

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