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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Water-Mixed Polyvinyl Alcohol Viscosity on Wear Response of Carbon Steel Exposed to an Eroding Medium
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Effect of Water-Mixed Polyvinyl Alcohol Viscosity on Wear Response of Carbon Steel Exposed to an Eroding Medium

机译：水混合聚乙烯醇粘度对暴露于腐蚀介质的碳钢磨损响应的影响

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摘要

The erosion failure of oil transmission lines is mainly caused by the migration of quartz, sand, silt and clay into the processing units. Apart from the solid particles, the fluid viscosity also impacts the erosion-related failure of the processing units. The role of sand carrier viscosity in wear damage to pipelines, however, is not well understood. In this study, the wear performance of carbon steel coupons in polymer-sand-water slurry was investigated by varying the slurry viscosity from 1 to 19 cP. The water-soluble polyvinyl alcohol was used to modify the viscosity of the carrier fluid. At a fluid velocity of 6 m/s, the Reynolds number decreased from 165,000 to 8684 with a rise in viscosity from 1 to 19 cP. Similarly, at 10 m/s, the Reynolds number decreased from 330,000 to 17,368 for a similar change in the fluid viscosity. Each coupon was exposed to the fluid stream for 10 hours. Universal scanning probe microscopy (USPM) revealed more rough topology at lower viscosities and relatively smoother topology at higher viscosities. The erosion rate decreased from 6.31 +/- 0.41 to 1.27 +/- 0.16 mm/year and microhardness from 102 VHN to 98.2 VHN with a rise in viscosity from 1 to 19 cP. The USPM method revealed slightly higher erosion rates as compared to the weight loss method.
机译：输油管线的侵蚀破坏主要是由石英、砂、粉土和粘土迁移到处理单元中引起的。除固体颗粒外，流体粘度也会影响加工装置的腐蚀相关故障。然而，砂载体粘度在管道磨损损伤中的作用尚不清楚。在本研究中，通过改变泥浆粘度从1到19 cP，研究了碳钢试样在聚合物砂-水泥浆中的磨损性能。水溶性聚乙烯醇用于改变载液的粘度。当流体速度为6 m/s时，雷诺数从165000下降到8684，粘度从1上升到19 cP。同样，在10 m/s时，由于流体粘度的类似变化，雷诺数从330000下降到17368。将每个试样暴露于流体流中10小时。通用扫描探针显微镜（USPM）在低粘度时显示出更粗糙的拓扑结构，在高粘度时显示出相对平滑的拓扑结构。侵蚀率从6.31+/-0.41下降到1.27+/-0.16 mm/年，显微硬度从102 VHN下降到98.2 VHN，粘度从1上升到19 cP。与失重法相比，USPM法显示出略高的侵蚀率。

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