摘要
应用一种自主设计的新型端面滚柱滚压试验系统,以车削进给量、滚压力和主轴转速为变量,对T2铜工件端面滚柱滚压工艺进行单因素试验研究,得出了T2铜滚柱滚压表面强化及光整作用的规律。试验结果表明:应用该装置能够显著降低纯铜试件的表面粗糙度,在一定程度上提升了表面显微硬度,试件表面粗糙度由加工前的8.96μm降到小于0.08μm,表面显微硬度则从110HV提升到大于130HV;滚压力是影响试件表面粗糙度及显微硬度最主要的因素,主轴转速次之,车削进给量最弱。滚压对表面粗糙度的影响存在合适的滚压力(607～898N)及主轴转速(360～560r/min),最多可以提升试件表面6个精度等级。表面显微硬度随着车削进给量、滚压力和主轴转速的增大而增大,其中增大滚压力可以提升表面显微硬度12%左右,增大主轴转速大约可以提升4.3%,而车削进给量对其影响较小。
The effects of end face roller-burnishing on surface strengthening and finishing of T2 copper are concluded from a single-factor experiment by a newly-designed end face roller-burnishing tool,using turning feed,burnishing force and spindle speed as variables.The results show that the the surface roughness decreases remarkably from the initial 8.96 μm to below 0.08 μm,while the surface microhardness increases from the initial 110 HV to above 130 HV.Burnishing force is the chief factor affecting surface properties,spindle speed the second,turning feed the third.An optimal combination of burnishing force（607～898 N） and spindle speed（360～560 r/min） exists for the minimal surface roughness and in that way the one of the tested sample can be promoted by six accuracy grades at most.The increase of the above three process parameters causes an increase in microhardness consequently.Among the variables,increasing burnishing force elevates the surface microhardness by about 12%,spindle speed by about 4.3% and turning feed by less.
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2012年第2期109-114,共6页
China Surface Engineering
基金
国家自然科学基金(50975095)
中央高校基本科研经费资助(2012ZM0048)
关键词
端面滚柱滚压
表面粗糙度
表面显微硬度
end face roller-burnishing
surface roughness
surface microhardness
