【摘要】 随着变压器快速发展，套管线夹作为变压器套管与其他部件连接的首要零部件，在服役过程中易出现开裂和变形问题，影响电力系统安全运行。总结了套管线夹材料的发展历程，着重分析了黄铜和紫铜线夹的开裂和变形问题及其产生原因，对比了热处理、表面处理和微合金化3种解决方法的效果和优缺点。分析发现，微合金化能更高效解决此问题，纳米级析出相强化铜合金具有高强度、高电导率和耐腐蚀性，能够兼顾线夹导电承载和耐腐蚀要求，可充分发挥Cu-Cr-Zr和Cu-Ni-Si两种合金体系在套管线夹上应用的优势。更多还原

【Abstract】 With transformers widely used, the bushing clamp has prominent cracking and deformation problems as the primary component connecting the transformer bushing to other components, which affect the safe operation of the power system. The development history of bushing clamp materials was summarized, and the cracking and deformation problems of brass and pure copper clamps were emphasized. The effects as well as advantages and disadvantages of solutions including heat treatment, surface treatment, and microalloying were analyzed comparatively. The results indicate that microalloying can efficiently solve the problem. Nano-scale precipitation strengthened copper alloys exhibit high strength, high conductivity, and well corrosion resistance, which meet the requirements of conductive bearing and corrosion resistance of clamps, and gives full play to the advantages of Cu-Cr-Zr and Cu-Ni-Si alloys in the application of sleeve wire clamps.更多还原