| 激光扫描金属粉末的“球化效应”及其应用 |
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| 引用本文： | 欧阳鸿武,刘卓民,黄誓成,王琼,张新. 激光扫描金属粉末的“球化效应”及其应用[J]. 激光技术, 2008, 32(6): 572-575 |
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| 作者姓名： | 欧阳鸿武 刘卓民 黄誓成 王琼 张新 |
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| 作者单位： | 1.中南大学, 粉末冶金国家重点实验室, 长沙, 410083 |
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| 基金项目： | 国家自然科学基金 |
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| 摘 要： | 为了利用激光束扫描金属粉末时的"球化效应"将异形金属粉末球化,通过采用正交实验法,系统探明了获得球化效果的激光工艺参量,得到相应的球形粉末。结果表明,金属粉末的球化能力决定于金属粉末的粒径、导热性、熔点和激光吸收率等因素,可用球化因子K表征;当激光扫描速度与激光功率(高于临界功率后)的比值大致等于K时,可获得球形粉末。
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| 关 键 词： | 激光技术 金属球形粉末 球化效应 钛 青铜 |
| 收稿时间： | 2007-09-25 |
Laser scanning to fabricate spherical powder by balling effect |
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| OUYANG Hong-wu,LIU Zhuo-min,HUANG Shi-cheng,WANG Qiong,ZHANG Xin. Laser scanning to fabricate spherical powder by balling effect[J]. Laser Technology, 2008, 32(6): 572-575 |
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| Authors: | OUYANG Hong-wu LIU Zhuo-min HUANG Shi-cheng WANG Qiong ZHANG Xin |
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| Affiliation: | OUYANG Hong-wu,LIU Zhuo-min,HUANG Shi-cheng,WANG Qiong,ZHANG Xin(State Key Laboratory for Powder Metallurgy,Central South Universty,Changsha 410083,China) |
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| Abstract: | This study is carried on to explore a feasible approach to transfer the irregular powder,such as Ti powder and bronze powder,into spherical powder by balling effect.The results indicate that:(1) the balling ability of mental powder can be ranked by a balling factor K which accounts for the influence of particle size,density,special thermal property,boiling point as well as laser absorbing rate;(2) when the scanning speed v equals laser power P multiplying K,the irregular particle will be transformed into sp... |
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| Keywords: | laser technique metal powder balling effect Ti bronze |
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