【摘要】 利用大功率ＣＯ２激光对钻杆接头表面进行处理．通过显微硬度计测定了硬化层硬度的分布规律，并对硬化层进行了金相分析．结果表明激光处理后钻杆接头表面为理想的针状马氏体，表面硬度有很大提高．更多还原

【Abstract】 The laser-hardened connecting drill rod face by high power CO2 continuous laser is introduced.The microhardness distribution of laser hardened layer was tested by a microhardness tester, and the structure was analyzed.The results showed:The laser hardened strcture is acicular martensite,the microhardness of laser hardened layer was improved.更多还原