Precious metal bushing which is intended for making glass fibre, and a process for producing it

摘要

The present invention relates to an improved, laminated bushing for making fibrous glass products. This bushing consists of an inner part 23 which consists of precious metal and which is coated externally with an inert ceramic material 21 which is resistant to certain heat changes. Such a ceramic material 21 preferably consists of a crystallographically stabilised zirconium oxide, and it is applied by means of arc plasma spraying. <IMAGE>