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指针式指示仪表其可动部分的测量机构目前主要采用轴尖支承或张丝支承。后者由于结构简单、抗振性能良好,故不但在精密指针式仪表中得到广泛应用,而且正逐步在安装式仪表中得到采用。用来制造张丝材料的合金较多,如钖锌青铜、铍青铜、K40HXMB合金以及铂基合金等。从目前国外张丝材料情况来看,以铂基合金材料的发展前途为最大,现把国外铂基张丝材料应用情况介绍如下。
Indicator pointer instrument movable part of the measuring mechanism is currently mainly used shaft bearing or wire support. The latter due to its simple structure, good vibration resistance, it is not only widely used in precision pointer instruments, and are gradually being used in the installation of instrumentation. Filament used to make more alloy materials, such as 钖 zinc bronze, beryllium bronze, K40HXMB alloy and platinum-based alloys. From the current situation abroad Zhang silk materials, platinum alloy materials to the development of the future, now the application of platinum abroad wire materials are described below.