Design and evaluation of a Laval-type supersonic atomizer for low-pressure gas atomization of molten metals
A Laval-type supersonic gas atomizer was designed for low-pressure gas atomization of molten metals. The principal design ob-jectives were to produce small-particle uniform powders at lower operating pressures by improving the gas inlet and outlet structures and op-timizing structural parameters. A...
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| Veröffentlicht in: | International journal of minerals, metallurgy and materials metallurgy and materials, 2014-06, Vol.21 (6), p.627-635 |
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| creator | Si, Chao-run Zhang, Xian-jie Wang, Jun-biao Li, Yu-jun |
| description | A Laval-type supersonic gas atomizer was designed for low-pressure gas atomization of molten metals. The principal design ob-jectives were to produce small-particle uniform powders at lower operating pressures by improving the gas inlet and outlet structures and op-timizing structural parameters. A computational fluid flow model was developed to study the flow field characteristics of the designed atom-izer. Simulation results show that the maximum gas velocity in the atomization zone can reach 440 m＆#183;s-1;this value is independent of the atomization gas pressure P0 when P0〉0.7 MPa. When P0=1.1 MPa, the aspiration pressure at the tip of the delivery tube reaches a mini-mum, indicating that the atomizer can attain the best atomization efficiency at a relatively low atomization pressure. In addition, atomization experiments with pure tin at P0=1.0 MPa and with 7055Al alloy at P0=0.8 and 0.4 MPa were conducted to evaluate the atomization capa-bility of the designed atomizer. Nearly spherical powders were obtained with the mass median diameters of 28.6, 43.4, and 63.5μm, respec-tively. Compared with commonly used atomizers, the designed Laval-type atomizer has a better low-pressure gas atomization capability. |
| doi_str_mv | 10.1007/s12613-014-0951-4 |
| format | Article |
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The principal design ob-jectives were to produce small-particle uniform powders at lower operating pressures by improving the gas inlet and outlet structures and op-timizing structural parameters. A computational fluid flow model was developed to study the flow field characteristics of the designed atom-izer. Simulation results show that the maximum gas velocity in the atomization zone can reach 440 m＆#183;s-1;this value is independent of the atomization gas pressure P0 when P0〉0.7 MPa. When P0=1.1 MPa, the aspiration pressure at the tip of the delivery tube reaches a mini-mum, indicating that the atomizer can attain the best atomization efficiency at a relatively low atomization pressure. In addition, atomization experiments with pure tin at P0=1.0 MPa and with 7055Al alloy at P0=0.8 and 0.4 MPa were conducted to evaluate the atomization capa-bility of the designed atomizer. Nearly spherical powders were obtained with the mass median diameters of 28.6, 43.4, and 63.5μm, respec-tively. Compared with commonly used atomizers, the designed Laval-type atomizer has a better low-pressure gas atomization capability.</description><identifier>ISSN: 1674-4799</identifier><identifier>EISSN: 1869-103X</identifier><identifier>DOI: 10.1007/s12613-014-0951-4</identifier><language>eng</language><publisher>Beijing: University of Science and Technology Beijing</publisher><subject>Atomizers ; Atomizing ; Ceramics ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Composites ; Corrosion and Coatings ; Design ; Flow characteristics ; Fluid flow ; Gas atomization ; Gas pressure ; Glass ; Liquid metals ; Low pressure gases ; Materials Science ; Metallic Materials ; Natural Materials ; Spherical powders ; Surfaces and Interfaces ; Thin Films ; Tribology ; 低压 ; 拉瓦 ; 气体雾化 ; 熔融金属 ; 设计 ; 评价 ; 质量中值直径 ; 超声雾化器</subject><ispartof>International journal of minerals, metallurgy and materials, 2014-06, Vol.21 (6), p.627-635</ispartof><rights>University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg 2014</rights><rights>University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg 2014.</rights><rights>Copyright © Wanfang Data Co. 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The principal design ob-jectives were to produce small-particle uniform powders at lower operating pressures by improving the gas inlet and outlet structures and op-timizing structural parameters. A computational fluid flow model was developed to study the flow field characteristics of the designed atom-izer. Simulation results show that the maximum gas velocity in the atomization zone can reach 440 m＆#183;s-1;this value is independent of the atomization gas pressure P0 when P0〉0.7 MPa. When P0=1.1 MPa, the aspiration pressure at the tip of the delivery tube reaches a mini-mum, indicating that the atomizer can attain the best atomization efficiency at a relatively low atomization pressure. In addition, atomization experiments with pure tin at P0=1.0 MPa and with 7055Al alloy at P0=0.8 and 0.4 MPa were conducted to evaluate the atomization capa-bility of the designed atomizer. Nearly spherical powders were obtained with the mass median diameters of 28.6, 43.4, and 63.5μm, respec-tively. Compared with commonly used atomizers, the designed Laval-type atomizer has a better low-pressure gas atomization capability.</description><subject>Atomizers</subject><subject>Atomizing</subject><subject>Ceramics</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Composites</subject><subject>Corrosion and Coatings</subject><subject>Design</subject><subject>Flow characteristics</subject><subject>Fluid flow</subject><subject>Gas atomization</subject><subject>Gas pressure</subject><subject>Glass</subject><subject>Liquid metals</subject><subject>Low pressure gases</subject><subject>Materials Science</subject><subject>Metallic Materials</subject><subject>Natural Materials</subject><subject>Spherical powders</subject><subject>Surfaces and Interfaces</subject><subject>Thin Films</subject><subject>Tribology</subject><subject>低压</subject><subject>拉瓦</subject><subject>气体雾化</subject><subject>熔融金属</subject><subject>设计</subject><subject>评价</subject><subject>质量中值直径</subject><subject>超声雾化器</subject><issn>1674-4799</issn><issn>1869-103X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp9kUtPxCAUhRujiePjB7jDuDQoUAp0aXwnk7jRxB1h2kvtPKBC66i_Xiad6M6EcC_wnXMSbpadUHJBCZGXkTJBc0wox6QsKOY72YQqUWJK8tfd1AvJMZdluZ8dxDgnREhJ5CRb3EBsG4eMqxF8mOVg-tY75C0yaGrSBe6_OkBx6CBE79oKmd6v2m8IyPqAln6NuwAxDgFQY-L29ddk5Zc9OLSC3izjUbZnU4HjbT3MXu5un68f8PTp_vH6aoqrXKoec8tKVVSCM2msUJUCWRW1ooUSOStUDZuTYCAIL8BWisqSlsbUlvPSiJnMD7Pz0XdtnDWu0XM_BJcS9Wy-mNefnzMNLP0UEWlL9NlId8G_DxD7P5wl48SklSg6UlXwMQawugvtyoQvTYneTECPE9DJUm8moDfObNTExLoGwp_zf6LTbdCbd8170v0mFYRKTpjKfwB2DpTI</recordid><startdate>20140601</startdate><enddate>20140601</enddate><creator>Si, Chao-run</creator><creator>Zhang, Xian-jie</creator><creator>Wang, Jun-biao</creator><creator>Li, Yu-jun</creator><general>University of Science and Technology Beijing</general><general>Springer Nature B.V</general><general>Shannxi Engineering Research Center for Digital Manufacturing Technology, Northwestern Polytechnical University, Xi’an 710072, China</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W92</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>PCBAR</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>20140601</creationdate><title>Design and evaluation of a Laval-type supersonic atomizer for low-pressure gas atomization of molten metals</title><author>Si, Chao-run ; Zhang, Xian-jie ; Wang, Jun-biao ; Li, Yu-jun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c378t-4f2985c6427af68c8e7c5d815863258dec5d862e6045efc817919aadf449a6b73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Atomizers</topic><topic>Atomizing</topic><topic>Ceramics</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Composites</topic><topic>Corrosion and Coatings</topic><topic>Design</topic><topic>Flow characteristics</topic><topic>Fluid flow</topic><topic>Gas atomization</topic><topic>Gas pressure</topic><topic>Glass</topic><topic>Liquid metals</topic><topic>Low pressure gases</topic><topic>Materials Science</topic><topic>Metallic Materials</topic><topic>Natural Materials</topic><topic>Spherical powders</topic><topic>Surfaces and Interfaces</topic><topic>Thin Films</topic><topic>Tribology</topic><topic>低压</topic><topic>拉瓦</topic><topic>气体雾化</topic><topic>熔融金属</topic><topic>设计</topic><topic>评价</topic><topic>质量中值直径</topic><topic>超声雾化器</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Si, Chao-run</creatorcontrib><creatorcontrib>Zhang, Xian-jie</creatorcontrib><creatorcontrib>Wang, Jun-biao</creatorcontrib><creatorcontrib>Li, Yu-jun</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库-工程技术</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>International journal of minerals, metallurgy and materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Si, Chao-run</au><au>Zhang, Xian-jie</au><au>Wang, Jun-biao</au><au>Li, Yu-jun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Design and evaluation of a Laval-type supersonic atomizer for low-pressure gas atomization of molten metals</atitle><jtitle>International journal of minerals, metallurgy and materials</jtitle><stitle>Int J Miner Metall Mater</stitle><addtitle>International Journal of Minerals,Metallurgy and Materials</addtitle><date>2014-06-01</date><risdate>2014</risdate><volume>21</volume><issue>6</issue><spage>627</spage><epage>635</epage><pages>627-635</pages><issn>1674-4799</issn><eissn>1869-103X</eissn><abstract>A Laval-type supersonic gas atomizer was designed for low-pressure gas atomization of molten metals. The principal design ob-jectives were to produce small-particle uniform powders at lower operating pressures by improving the gas inlet and outlet structures and op-timizing structural parameters. A computational fluid flow model was developed to study the flow field characteristics of the designed atom-izer. Simulation results show that the maximum gas velocity in the atomization zone can reach 440 m＆#183;s-1;this value is independent of the atomization gas pressure P0 when P0〉0.7 MPa. When P0=1.1 MPa, the aspiration pressure at the tip of the delivery tube reaches a mini-mum, indicating that the atomizer can attain the best atomization efficiency at a relatively low atomization pressure. In addition, atomization experiments with pure tin at P0=1.0 MPa and with 7055Al alloy at P0=0.8 and 0.4 MPa were conducted to evaluate the atomization capa-bility of the designed atomizer. Nearly spherical powders were obtained with the mass median diameters of 28.6, 43.4, and 63.5μm, respec-tively. Compared with commonly used atomizers, the designed Laval-type atomizer has a better low-pressure gas atomization capability.</abstract><cop>Beijing</cop><pub>University of Science and Technology Beijing</pub><doi>10.1007/s12613-014-0951-4</doi><tpages>9</tpages></addata></record> |
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| ispartof | International journal of minerals, metallurgy and materials, 2014-06, Vol.21 (6), p.627-635 |
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| source | Springer Nature - Complete Springer Journals; Alma/SFX Local Collection; ProQuest Central |
| subjects | Atomizers Atomizing Ceramics Characterization and Evaluation of Materials Chemistry and Materials Science Composites Corrosion and Coatings Design Flow characteristics Fluid flow Gas atomization Gas pressure Glass Liquid metals Low pressure gases Materials Science Metallic Materials Natural Materials Spherical powders Surfaces and Interfaces Thin Films Tribology 低压 拉瓦 气体雾化 熔融金属 设计 评价 质量中值直径 超声雾化器 |
| title | Design and evaluation of a Laval-type supersonic atomizer for low-pressure gas atomization of molten metals |
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