一、前言硬质合金密封环是机械密封中普遍采用的一种摩擦副材料。目前,国内基本采用WC-Co(YG6牌号)硬质合金。随着我国石油化学工业的迅速发展,对泵、釜上的机械密封提出了更高的使用要求,例如:耐腐蚀、耐高温、防辐射以及在腐蚀介质中的抗颗粒磨损等,而WC-Co硬质合金已不能完全适应这些要求。近年来,我们研制、生产了WC-Ni硬质合金 First, the introduction Carbide ring is a commonly used mechanical seal in a friction material. At present, the basic use of WC-Co (YG6 grade) cemented carbide. With the rapid development of China’s petrochemical industry, higher requirements are put forward on mechanical seals on pumps and kettles, such as corrosion resistance, high temperature resistance, radiation protection and anti-particle abrasion in corrosive media. However, WC- Co cemented carbide has not fully meet these requirements. In recent years, we developed and produced WC-Ni cemented carbide