【摘要】 <正> 在手表生产中,由于机芯零件的电镀层厚度难以控制,影响手表的装配精度、走时准确和使用寿命。尤其在每年黄梅季节,常发现零件生锈报废和手表返修除锈,这不仅影响手表美观,而且影响手表的产量、质量和成本。为了有效地控制手表零件的镀层厚度和贵重金属用量,并能指导电镀工艺,迫切需要对手表零件镀层厚度作快速无损测量。更多还原

【Abstract】 By means of the X-ray fluorescence technique, the thickness of a plating layer can be measured relatively. With the aid of a microprocessor, the value of the measured (μm) can be printed out directly. The objects of measurement can be cobalt-nickel plating layer on the base of steel or brass and gold plating layer on the base of nickel white copper. The measuring range of thickness is usually 1-6μm with an error of less than ±0.3μm, and the area for the measurement is usually no less than 2 mm in diameter.更多还原