第32届炭素技术信息交流会预通知暨征文通知  

Soft Abrasive Flow Machining Simulation and Experiment of the Large Curvature Bend Based on RNG k-ε Model

机构地区：[1]全国炭素制品信息网

出　　处：《炭素技术》2016年第2期39-39,共1页Carbon Techniques

摘　　要：全国炭素制品信息网拟定于2016年6月中旬（地点待定）召开第32届全国炭素技术信息交流会。会议将紧紧围绕＂产供需＂、＂产学研＂的信息需求,贴近生产、贴近市场、贴近科研,开展炭素行业发展战略与企业管理的研讨;进行炭素原料、石墨电极、炭电极、铝用炭素、高炉炭砖、特种炭材料的技术研讨;开展新工艺、新技术、新设备、新材料的技术推广;进行炭素工艺改造、设备改造与节能环保、In view of the problems of surface of small size and large curvature bend structural is difficult to use tools to make the contact skin pass processing. This project presents a method to use soft abrasive flow to process this type of the inner surface of elbow pipe. In order to verify the theoretical analysis is correct, to do simulation experiment in the whole inside of flow passage during the process of processing based on RNG k-e turbulence model. Also, the experimental platform is built to do processing experiment In order to verify the reliability of the simulation experiment. The results of simulation show that the wear particles are doing irregular movement in the elbow pipe, and there are obviously velocity and pressure differences in the inner and outer wall of the elbow pipe. And with the inlet pressure increased from2.0MPa to 3.0MPa, the internal pressure and speed will also increase. In processing experiment,each point of internal surface of the workpiece is relatively large before processing, so average roughness is correspondingly larger, about 1.072μm. After the workpiece is processed for a period of time, the light of internal surface becomes better, and with the increase of the entry pressure, the effect of processing gets better, the average level of surface roughness is increased and the light is gradually improved, up to 0.450μm. The results of processing experiment show that the cutting marks in the near wall region of the wear debris is indeed doing the irregular movement, which is fit with the results of the numerical simulation in early stage. Based on the theoretical analysis that simulation experiments and processing tests provides a theoretical and practical evidences for soft abrasive to achieve a small size and precision machining without tool of large curvature bend.

关 键 词：炭素 信息交流会 炭电极 石墨电极 炭材料 工艺改造 行业发展战略 市场动态 设备改造 技术推广 

分 类 号：TQ127.11[化学工程—无机化工]