Proximity Heating Of CFRTP Molding Dies By
Using High-frequency Direct Current
Author(s)
K. Tanaka, R. Sue, K. Iwamoto & T. Katayama
Abstract
In the automobile industry, it is required to reduce the weight of cars for better
fuel consumption. Recently, Carbon Fiber Reinforced Thermoplastics (CFRTP)
are expected to be used for lightweight component parts. However, the cost of
CFRTP is so high that the use of CFRTP is barely applied in the automobile
industry. In order to lower the cost of CFRTP, simple equipment and low
consumed power are necessary. High-frequency direct resistance heating to
CFRTP molding dies becomes possible to solve these issues. High-frequency
direct resistance heating is a method that alternating current is directly applied to
a metal, and metal surface is heated by skin effect. When opposite directions of
an alternating current flow in a pair of metal sections which face each other with
a small gap, the proximity effect also promotes the concentration of current
density on proximal surfaces of the metal and heats the metal surface intensively
by joule heat. By applying high-frequency direct resistance heating to CFRTP
molding, cost reduction as well as simplification of the facilities can be expected.
In this study, in order to apply high-frequency direct resistance heating to
CFRTP molding die, the effects of the proximity effect on the mold are
evaluated to clarify the heating characteristics and conditions of the proximity
effect, and the applicability of CFRTP molding is discussed. The experimental
result reveals that the proximal surfaces can be heated by proximity effect.
Keywords: die heating, proximity effect, high-frequency direct resistance
heating, carbon fiber reinforced thermoplastics.
Keywords
die heating, proximity effect, high-frequency direct resistance
heating, carbon fiber reinforced thermoplastics.
Related Book
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