高压开关设备镀银层硬度检测技术介绍

Introduction of the Hardness Testing Technology for Silver Plating Layer of High-voltage Switchgear

高压开关设备主触头的镀银层硬度是保证其耐磨性的主要性能指标,国家电网公司对其提出了明确的要求。研究分析了镀银层的厚度特点和硬度检测的基本原理,提出了对高压开关设备上镀银层进行不受基材影响的显微硬度检测方法,并结合镀银层厚度值推荐了检测的载荷力。

Hardness is a main performance to ensure the wear resistance for silver plating layer of High-voltage switchgear,and the State Grid Corporation has made clear their requirements.The silver plating layer thickness characteristic and the principles of hardness testing have been analyzed.And a microhardness testing approach on silver plating layer without affected from the substrate has been proposed.A testing load force for microhardness testing has been also recommended.