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1.应用范围本国际标准规定了磁性测厚仪对磁性和非磁性基体镍镀层厚度进行无损测量的方法。本方法不适用于自动催化(非电镀)镍镀层,此应依镍镀层的化学成份而定。使用本国际标准时,要区分下列两类镍镀层: a) 磁性基体镍镀层(A类镀层); b) 非磁性基体镍镀层(B类镀层)。不应认为所有仪器对这两类镀层都适用。基于磁性原理的仪器的有效测量范围:A类镀层为50μm;B类镀层为25μm。基于磁阻原理的仪器的有效测量范围:两类镀层均能测到1mm甚至更大的厚度。
1 Scope of application This International Standard specifies the magnetic thickness gauge non-destructive measurement of the thickness of nickel coating magnetic and non-magnetic substrate method. This method does not apply to autocatalytic (electroless) nickel plating, which should be based on the chemical composition of nickel plating. When using this International Standard, the following two types of nickel plating are distinguished: a) a magnetic nickel coating (type A coating); b) a non-magnetic nickel coating (type B coating). All instruments should not be considered suitable for both types of coatings. The effective measuring range of the instrument based on the principle of magnetism is: A type plating is 50μm; Type B plating is 25μm. Effective measurement range of magnetoresistive-based instruments: Both types of coatings can measure thicknesses of 1 mm or more.