基于正交试验的磨料浆体流变特性  

Rheological properties research of abrasive suspension based on orthogonal experiment

作　　者：刘国勇[1] 宋鸣 张莹娜 蔡阿云 孔宁[1] 朱冬梅[1] 张少军[1] LIU Guoyong;SONG Ming;ZHANG Yingna;CAI Ayun;KONG Ning;ZHU Dongmei;ZHANG Shaojun(School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100085, China;China Petroleum Engineering ＆ Construction Corp, Beijing 100101, China;Beijing Shougang Cold Rolling Co. Ltd., Beijing 101304, China)

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]中国石油工程建设有限公司,北京100101 [3]北京首钢冷轧薄板有限公司,北京101304

出　　处：《中国粉体技术》2018年第2期26-31,共6页China Powder Science and Technology

基　　金：国家自然科学基金项目;编号:51605026;中央高校基本科研业务费专项资金资助项目;编号:FRF-TP-15-082A1

摘　　要：立足于磨料浆体射流在除鳞领域的应用,通过设计正交试验,对磨料浆体的流变参数进行测量,研究不同因素对2种磨料浆体流变特性的影响效应。结果表明:对于石榴石磨料浆体,聚丙烯酰胺(PAM)质量浓度对磨料浆体黏度的影响最为显著,磨料质量浓度次之,磨料粒径对磨料浆体黏度无明显影响。对于钢砂磨料浆体,PAM质量浓度对磨料浆体黏度有显著影响,磨料质量浓度和磨料粒径对磨料浆体黏度无明显影响。利用幂律模型、Bingham模型及Herschel-Bulkley模型对实验测得的流变参数进行拟合,优选出Herschel-Bulkley模型作为描述磨料浆体流变特性的最佳模型,建立了其本构方程,得出磨料浆体的流变特性规律。The effects of different factors on the rheological properties of abrasive suspension were experimentally conducted by measuring the rheological parameter of abrasive suspension, which polyacrylamide （PAM）, garnet and steel grit were selected as additive and abrasive respectively in the field of descaling of abrasive suspension jet. The results show that, abrasive concentration and abrasive grit have little influence on the viscosity of suspension. The garnet and steel grit, abrasive slurry viscosity change curves have almost the same rule which the viscosity decreases with the sheafing rate increasing. The measured data were fitted using power-law model, Bingham model and Herschel-Bulkley model. It is found that Herschel-Bulkley model is more accurate to describe rheological properties of two kinds of abrasive slurry. Based on Herschel-Bulkley model, the constitutive equations are established and rheological law is obtained.

关 键 词：磨料浆体 聚丙烯酰胺 流变特性 本构方程 

分 类 号：O373[理学—流体力学]