摘要
采用ND-6行星式球磨机,对53μm左右的钒铁颗粒进行处理,用干法可以将钒铁研磨至7μm左右,继续研磨需用湿法,可以达到2.5μm。经试验得出粒度不同的钒铁颗粒具有不同的熔点,颗粒越小,熔点越低。在此基础上制备出含钒铁超细微粒的金属涂料,该涂料良好的渗透性和低熔点,有助于采用铸渗法制作梯度硬度模具。
The FeV powders with particle size of 53μm was treated using ND-6 planetary mill, the dry-process was used to grind FeV granule from 53μm to 7 μm or so, the wet-process was selected when grinding continue, 2.5μm is the result. The experiment indicates that the different melting point is respective to various granularity of the FeV particles, the smaller the particle is, the lower the melting point is. Based on the result above, metal coating containing ultrafine FeV particles is prepared. The coating have better permeability and lower melting point, it is useful to produce the mould with gradient hardness by cast-infiltration process.
出处
《热加工工艺》
CSCD
北大核心
2008年第1期4-5,9,共3页
Hot Working Technology
基金
国家自然科学基金项目(50675165)
广东省自然科学基金项目(04010933)
关键词
钒铁微粒
湿法研磨
低熔点
梯度硬度模具
FeV particles
grind with wet-process
low melting point
mould with gradient hardness
