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在长输油气管道的防腐作业过程中,管体表面处理质量对管体表面涂层附着力起着非常重要的作用,而锚纹特征是影响管体表面处理质量的重要因素之一。根据GB/T5210-2006对不同锚纹特征进行环氧涂层附着力的测试,得到了涂层附着力的相关数据。根据实验数据,分别得出了表面粗糙度、锚纹微观不平度间距、锚纹深度和环氧涂层附着力之间的关系。对实验数据进行拟合,得出了不同特征的锚纹与环氧涂层附着力的关系式和图形。通过对实验结果的分析,得到了在进行管体表面除锈处理时使涂层与基体的结合效果最佳的锚纹特征,即基体的表面粗糙度R在4～6 μm之间,锚纹深度R保持在30～45 μm之间。
During the anticorrosive operation of long-distance oil and gas pipelines, the surface quality of the pipe body plays an important role in the adhesion of the coating on the surface of the pipe body, and the anchor pattern is one of the important factors that affect the quality of the pipe surface treatment. According to GB / T5210-2006 different anchor pattern epoxy coating adhesion test, get the coating adhesion data. According to the experimental data, the relationship between the surface roughness, the micro unevenness of anchor lines, the depth of anchor pattern and the adhesion of epoxy coating were obtained respectively. Fitting experimental data to obtain the relationship between the characteristics of anchor and epoxy coating adhesion and graphics. Through the analysis of the experimental results, the anchor pattern with the best combination of the coating and the substrate is obtained when the surface of the pipe is dehumidified, that is, the surface roughness R of the substrate is between 4 and 6 μm, and the anchor pattern Depth R remains between 30 and 45 μm.