EQUIPMENT TO MANUFACTURE MEMBRANES OF CAPACITIVE PRESSURE PICKUPS AND PROCESS OF MANUFACTURE OF MEMBRANES OF CAPACITIVE PRESSURE PICKUPS

摘要

aviation and mechanical engineering. SUBSTANCE: metal film membrane is stretched over surface of arc-like plate of equipment. Polyamide-acid varnish is applied to surface of film and is endured under stepped change of temperature from 30 to 320 C for the course of 15-20 min. For increase of upper range of pressure measurement and for stabilization of metrological characteristics pickup membrane of polyimide film is subjected to orientation thermal stretching conducted with the use of membrane manufacturing equipment. Film is stretched with force of 3.0-8.0 kg/sq.cm, temperature is raised with rate of 3-5 C/min from 20 to 200 C with endurance time of 5-15 min. EFFECT: enhanced productivity, improved metrological characteristics. 2 cl, 3 dwg