A magnetic transducer a long service life for instrumentation applications

摘要

The present disclosure relates to the manufacture of instrumentation magnetic transducers of the type including a pair of opposed support brackets having opposed magnetic pole pieces therein, the pole pieces in each bracket having edge faces all lying substantially in a common plane which is common with a first surface of each of the support brackets, and a pair of tip plates, each having slots in the bottom surfaces of the tip plates being adapted to be secured to respective first surfaces of the support brackets with the pole tips engaging the edge faces of the pole pieces and with a coupling gap between the pole tips to define signal channels for cooperation with a magnetic record medium. According to the present invention, the bottom surfaces of the tip plates are hard anodized prior to assembly thereof with the pole tips or the support brackets and the top surfaces of the tip plates are subsequently machined to a depth to expose the pole tips and to come close to the hard anodized area of the tip plates between the pole tips.