Evaluation and optimal design of supersonic nozzle for laser-assisted oxygen cutting of thick steel sections
文献类型：期刊论文
| 作者 | Zhang, C ; Wen, P; Yuan YM(袁越明); Fan XJ(范学军)
|
| 刊名 | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 86期号:2016-05-08页码:1243-1251 |
| 通讯作者邮箱 | wenpeng@tsinghua.edu.cn |
| ISSN号 | 0268-3768 |
| 关键词 | Laser cutting Supersonic nozzle Numerical simulation Flow visualization |
| 通讯作者 | Wen, P (reprint author), Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China. ; Wen, P (reprint author), Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China. |
| 产权排序 | [Wen, Peng] Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China; [Zhang, Chi; Wen, Peng] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China; [Yuan, Yueming; Fan, Xuejun] Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| 中文摘要 | With the full use of combustion heat from Fe-O reaction, laser-assisted oxygen cutting (LASOX) is able to cut thick mild steel plates by a defocused laser of medium power (approximately 1 kW). The dynamic behavior of oxygen gas flow, determined by nozzle structure and cutting parameters, is the key factor affecting cut ability and quality. It is significant to understand the method to design a suitable supersonic nozzle and to evaluate its performance. A supersonic minimum length nozzle (MLN) was designed and made specially for LASOX. The configuration (D (exit)/D (critical)) of the designed nozzle was chosen based on two-dimensional isentropic calculation of dynamic gas pressure. The divergent section of the MLN was designed in accordance with the method of characteristics (MOC). Numerical simulation and Schlieren visualization were used to observe and compare the flow behavior of the free jet from the designed MLN nozzle and a commercial supersonic nozzle. The MLN nozzle generates a highly uniform and stable supersonic jet extending a longer distance along the axis of nozzle, which is around 1.4 times longer than that from the commercial supersonic nozzle. Mild steel plates in 20 mm thickness were cut to investigate the effect of cutting parameters on LASOX cut quality of two nozzles. The MLN significantly improved cutting quality due to the better performance of gas flow. The optimal cut quality is related to both oxygen pressure and cutting speed. The oxygen content was measured along the cut surface to explain the difference in cut quality. |
| 类目[WOS] | Automation & Control Systems ; Engineering, Manufacturing |
| 分类号 | 二类 |
| 研究领域[WOS] | Automation & Control Systems ; Engineering |
| 关键词[WOS] | Laser cutting ; Supersonic nozzle ; Numerical simulation ; Flow visualization |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1007/s00170-015-8268-7 |
| 语种 | 英语 |
| WOS记录号 | WOS:000383084300011 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59726]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, C,Wen, P,Yuan YM,et al. Evaluation and optimal design of supersonic nozzle for laser-assisted oxygen cutting of thick steel sections[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2016,86(2016-05-08):1243-1251. |
| APA | Zhang, C,Wen, P,袁越明,&范学军.(2016).Evaluation and optimal design of supersonic nozzle for laser-assisted oxygen cutting of thick steel sections.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,86(2016-05-08),1243-1251. |
| MLA | Zhang, C,et al."Evaluation and optimal design of supersonic nozzle for laser-assisted oxygen cutting of thick steel sections".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 86.2016-05-08(2016):1243-1251. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。