大功率风电偏航轴承套圈用钢及其模拟热处理工艺  

Novel Boron Microalloyed Steel Used for High-power Wind Turbine Yaw Bearing Rings and Corresponding Simulation of Heat Treatment Process

作　　者：陈晨[1] 杨志南[1,2] 张洋[1] 张福成[1] 郑炀曾[1] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,秦皇岛066004 [2]燕山大学国家冷轧板带装备及工艺工程技术研究中心,秦皇岛066004

出　　处：《机械工程学报》2015年第14期29-37,共9页Journal of Mechanical Engineering

基　　金：国家高技术研究发展计划资助项目(863计划;2012AA03A504)

摘　　要：42Cr Mo钢已成功地用作小功率(2 MW及以下)风电偏航轴承套圈用钢,但由于其有限的淬透性,无法满足大功率风电偏航轴承套圈用钢的要求,因此,研究中引入40Cr Ni Mo钢和硼微合金化42Cr Mn Mo B钢进行对比分析。研究42Cr Mn Mo B钢、40Cr Ni Mo钢和42Cr Mo钢的淬透性,利用DEFORM3D模拟软件对5 MW风电偏航轴承套圈壁厚1/4位置处的油冷速率进行模拟,并利用模拟热处理炉对三种钢进行模拟热处理,随后对试验钢进行常规力学性能的测试。结果表明,42Cr Mn Mo B钢在端淬距离为85 mm位置处的硬度值为46 HRC,油淬后的理想临界直径约为160 mm,远高于42Cr Mo钢在85 mm位置处的29 HRC和43 mm的理想临界直径;经DEFORM3D模拟软件模拟的5 MW级风电偏航轴承壁厚1/4位置处的平均油冷速率约为0.7℃/s;在模拟油冷并经590℃回火1 h处理后42Cr Mn Mo B钢各项力学性能均能满足5 MW级风电偏航轴承套圈用钢的性能要求,具有应用于大功率风电偏航轴承套圈中的潜能。. The 42CrMo steel has been successfully used for small-power （2 MW or below） wind turbine yaw bearing rings, but it could not match the demand of the high-power wind turbine yaw bearing rings resulting from its limited hardenability. The 40CrNiMo steel and the boron microalloyed 42CrMnMoB steel are studied for comparison. The hardenability of the 42CrMnMoB steel, the 40CrNiMo steel and the 42CrMo steel are studied. The cooling rate at the 1/4 of the wall thickness of 5 MW wind turbine yaw bearing rings, in oil quenching process, is simulated using DEFORM3D software. A thermal simulation furnace is used for heat treatment process, and the mechanical properties have been tested. The results show that the hardness value of the 42CrMnMoB steel in the end quenching distance of 85 mm is 46 HRC and the relatively ideal critical diameter after oil quenching is about 160 ram, much higher than the ideal critical diameter of 43 mm and 29 HRC at 85 mm position of the 42CrMo steel. The average cooling rate at the 1/4 of the wall thickness in oil quenching is about 0.7 ℃/s that obtained by simulation of DFFORM3D software. Mechanical properties of the 42CrMnMoB steel can match the demand of 5 MW wind yaw bearing rings requirements for performance after simulated oil cooling and tempering at 590 ℃ for 1 hour, indicating that it has the potential to used for the high-power wind turbine yaw bearing rings.

关 键 词：轴承钢 淬透性 热处理 模拟 风电 

分 类 号：TG142[一般工业技术—材料科学与工程]