激光抛光模具钢参数优化 |
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引用本文: | 陈继民,仇毅.激光抛光模具钢参数优化[J].北京工业大学学报,2015,41(12):1841-1845. |
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作者姓名: | 陈继民 仇毅 |
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作者单位: | 北京工业大学 激光工程研究院 北京市数字化医疗3D打印工程技术研究中心,北京,100124;北京工业大学 激光工程研究院 北京市数字化医疗3D打印工程技术研究中心,北京,100124 |
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基金项目: | 北京市自然科学基金资助项目 |
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摘 要: | 模具表面抛光是模具加工中一个未能很好解决的难题,现在主要通过手工完成,而且效率极低.为了提高效率、降低劳动强度,出现了激光抛光技术.激光抛光金属是通过将金属表面的很薄的一层融化,由于表面张力的作用,融化的材料填充到原先表面的沟壑中来实现的.光纤激光器体积小,效率高,在工业中有广泛的应用,因此,采用连续光纤激光器,用正交试验设计的方法,对模具钢进行激光抛光试验,并对影响抛光效果的几个主要参数:功率、离焦量、扫描速度和扫描间隔等进行试验并优化,通过优化参数,可以将模具表面的粗糙度由1.0μm降低到0.2μm,抛光效果显著.
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关 键 词: | 模具制造 激光抛光 光纤激光 |
Optimizing Parameters of Laser Polishing Mould Steel |
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Abstract: | The finish machining of moulds remains a problem. Primarily, mould surface finish machining is achieved by handcraft with a very low speed ( normally is 10~30 min/cm2 ), which occupies 30% of the whole procedure time. In order to increase polish efficiency laser polishing is applied. Laser polishing is a new polishing technology which a thin surface layer is molten and the surface tension leads to a material flow from the peaks to the valleys. In recent decades, laser-polishing has received much attention owing to many advantages that it possesses. Fiber laser has a lot of characteristics that suits for industrial-use, and so the laser-polishing techniques that was performed by fiber laser on continuous mode, were explored. With the method of orthogonal experimental design, several parameters including power, scanning velocity, scanning interval and focal-offset distance were optimized. Under the best parameters, the sample' s roughness made from 2316 tool steel is reduced from about Ra=1. 0μm to 0. 2μm. |
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Keywords: | mouldmanufacture laser polish fiber laser |
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