【摘要】 为满足海上风电轴承防腐寿命大于25 a的需求，对风电轴承防腐喷涂工艺及性能展开了研究。对风电轴承钢喷涂前处理工艺进行了优化，选择了喷锌层厚度及中间漆、面漆类型，研究了不同喷漆层组合的结合力和耐蚀性，结果表明：基体表面清洁度等级为2.5～3.5,表面粗糙度Rz值为80～125μm时，防腐层的结合力可以满足不小于5 MPa的要求；基体采用“喷锌+聚酰胺环氧漆+双组份聚氨酯漆”的防腐层组合时，耐中性盐雾试验和湿热试验的时间均大于2 400 h,可以满足海上风电轴承耐久性设计年限要求；采用优化工艺进行防腐喷涂处理，各项指标均能达到相关标准要求。更多还原

【Abstract】 In order to meet the requirement of offshore wind turbine bearings with an anticorrosive life greater than 25 years, the anticorrosive spraying technology and performance of coating for the bearings are researched. The pretreatment process for the bearing steel before spraying is optimized, and the thickness of zinc sprayed coating and types of intermediate and finish paints are selected. The adhesion and corrosion resistance of different paint sprayed coating combinations are studied. The results show that: when the cleanliness level of substrate surface is 2.5～3.5 and the surface roughness Rz value is 80～125 μm, the adhesion of anticorrosive coating meets the requirement of not less than 5 MPa; when the substrate adopts the anticorrosive coating combination of "zinc spray+polyamide epoxy paint+two-component polyurethane paint", the time for neutral salt spray resistance test and damp heat test is greater than 2 400 hours, meeting the durability design requirements of the bearings; the optimized processes are adopted for anticorrosive spraying treatment, all indicators meet the requirements of relevant standards.更多还原