论文部分内容阅读
利用改进的旋转型腐蚀磨损试验装置测试了Q235钢在浆体输送中的磨蚀特性,分析了不同条件下磨损、腐蚀及其交互作用所占的失重比例。试验结果表明,磨损是材料磨蚀失重的主要因素,交互作用次之,而腐蚀对交互作用有显著的影响。固体颗粒的冲击使得材料表面形成凹坑,产生微区硬化并促进裂纹的形成,同时,固体颗粒将材料向周围推移形成褶皱;而后续颗粒的冲击、刮擦和切削使得裂纹扩展,最终使得材料脱落形成磨蚀坑,而腐蚀消弱了褶皱与基体的连接,使得褶皱易于脱离,加速了材料的磨蚀失重。
The corrosion behavior of Q235 steel in slurry transportation was tested by using a modified rotary erosion tester. The proportion of weight loss in wear, corrosion and its interaction under different conditions was analyzed. The experimental results show that wear is the main factor of material abrasion loss, followed by interaction, while corrosion has a significant impact on the interaction. The impact of solid particles make the surface of the material to form pits, resulting in hardening of the micro-area and promote the formation of cracks, while the solid particles to the material around the formation of wrinkles; subsequent particle impact, scraping and cutting the crack growth, Abscission of the formation of erosion pits, and corrosion weakening the connection of the folds and the substrate, making the folds easy to detach, accelerate the abrasion of the material weight loss.