Machinability investigations on turning of Cr-Ni-based stainless steel cladding formed by laser cladding process
Machinability investigations on turning of Cr-Ni-based stainless steel cladding formed by laser cladding process
复制标题
激光熔覆Cr-Ni基不锈钢熔覆层车削加工性能研究
DOI：
10.1007/s00170-015-7474-7
复制
发表时间：
2016-11
期刊：
影响因子：
--
通讯作者：
Zhanqiang Liu.
中科院分区：
文献类型：
--
作者：
Peirong Zhang;Zhanqiang Liu.
激光熔覆技术已发展成为再制造和维修领域的一种先进表面改性技术。激光熔覆成形零件的使用性能在很大程度上取决于其后续的精切工艺。由于熔覆层厚度的限制，熔覆车削加工的切削深度被限制得相对较小，这与均质材料的切削加工相比，体现出独特性和关键性。为了对激光熔覆层的加工过程有新的认识，研究了切削深度对激光熔覆Cr-Ni基不锈钢车削性能的影响。随着切削深度的增加，切削力增大，表面粗糙度变差，加工硬化增强，与常规车削工艺相似。然而，径向力而不是切向力占主导地位，特别是在给定的切削条件下，由于浅的切削深度。当切削深度超过0.18 mm时，表面粗糙度参数Rz和Rt均显示出两倍大。为了获得上级功能涂层，基于改进的有向图和矩阵法对车削加工的综合可加工性进行了定量评价。结果表明，熔覆层的切削性能随切削深度的增加而变差。切削深度为0.24 mm时，切削性能最差。因此，对于激光熔覆Cr-Ni基不锈钢的车削，最佳切削深度被确定为0.12mm。应注意的是，应消除刀具振动，以改善表面粗糙度以及加工硬化与切削深度的增加，这有利于激光熔覆形成的功能部件的加工。
Laser cladding process has been developed to be an advanced surface modification technique in re-manufacturing and maintenance fields. Service performance of the component formed by laser cladding largely depends on its subsequent finish cutting processes. Depth of cut in cladding turning process was restricted relatively small due to the thickness limitation of cladding layer, which reflected distinctive and crucial compared with cutting operations of homogeneous materials. The effect of depth of cut on turning performance of Cr-Ni-based stainless steel formed by laser cladding was investigated in this paper to get a novel insight into the machining process of cladding layer. Larger cutting force, worse surface roughness, and strengthened work-hardening with depth of cut increasing were observed similar to a conventional turning process. However, radial force rather than tangential force dominated especially in the given cutting conditions owing to the shallow depth of cut. Both surface roughness parameters Rz and Rt exhibited twice larger when the depth of cut exceeds 0.18 mm. Furthermore, comprehensive machinability of turning process was quantitatively evaluated based on modified digraph and matrix method so as to obtain a superior functional cladding. The results indicated that the machinability of cladding layer became worse with depth of cut increasing initially. The machinability value reached the worst level with depth of cut equaling to 0.24 mm. Thus, an optimized depth of cut was determined as 0.12 mm for turning of laser cladding Cr-Ni-based stainless steel. It should be noted that tool vibration should be eliminated for improved surface roughness as well as work-hardening with the depth of cut increasing, which performed beneficial to the machining of functional component formed by laser cladding.
登录
查看更多内容
影响因子：
11.1
作者：
Changrong Chen;Yan Wang;Hengan Ou;Yan He
通讯作者：
Yan He
影响因子：
6.3
作者：
L. Qian;M. Hossan
通讯作者：
L. Qian;M. Hossan
DOI：
10.1007/s00170-013-5423-x
发表时间：
2013-10
期刊：
The International Journal of Advanced Manufacturing Technology
影响因子：
--
作者：
L. Tang;Chengxiu Gao;J. Huang;Xiaojun Lin;Junping Zhang
通讯作者：
L. Tang;Chengxiu Gao;J. Huang;Xiaojun Lin;Junping Zhang
影响因子：
4.8
作者：
H. Masoumi;S. M. Safavi;M. Salehi
通讯作者：
H. Masoumi;S. M. Safavi;M. Salehi
DOI：
10.1007/s00170-015-6817-8
发表时间：
2015-02
期刊：
The International Journal of Advanced Manufacturing Technology
影响因子：
--
作者：
Yewang Sun;Zhijing Zhang;Jiaying Zhang;Xin Jin;Binshi Xu;G. Zhao
通讯作者：
Yewang Sun;Zhijing Zhang;Jiaying Zhang;Xin Jin;Binshi Xu;G. Zhao