Surface roughness and sub-surface deformation measurements in machining of niobium
(2018) In Procedia CIRP 71. p.413-417- Abstract
- Single-phase niobium is used in superconducting accelerator components in particle accelerating facilities. Functionality of such accelerator components is placing high demands on the surface quality. Single-phase niobium, as opposed to niobium alloys, is a highly ductile metal, which in a cutting process normally leads to such surface defects as adhesion, built-up edges, side flow, and burr formation. In this study, six different tool materials: uncoated and two types of coated cemented carbide, PCBN, PCD and single-crystal diamond have been tested in longitudinal turning of niobium at different cutting parameters, in order to achieve the target value of Ra = 0.8 μm. Experimental studies involved finish machining with varied feed and... (More)
- Single-phase niobium is used in superconducting accelerator components in particle accelerating facilities. Functionality of such accelerator components is placing high demands on the surface quality. Single-phase niobium, as opposed to niobium alloys, is a highly ductile metal, which in a cutting process normally leads to such surface defects as adhesion, built-up edges, side flow, and burr formation. In this study, six different tool materials: uncoated and two types of coated cemented carbide, PCBN, PCD and single-crystal diamond have been tested in longitudinal turning of niobium at different cutting parameters, in order to achieve the target value of Ra = 0.8 μm. Experimental studies involved finish machining with varied feed and cutting speed, while depth of cut was kept at ap = 0.25 mm. Apart from the resulting surface finish Ra and cutting forces, the following surface quality parameters were analysed: side-flow, adhesion, burr formation and sub-surface deformation. Only two of the tool materials, PCD and nanolaminate TiAlN/TiSiN coated cemented carbide, have shown acceptable surface integrity results. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/62210f56-5787-40bd-be18-5c560a4fb9e8
- author
- Olsson, Mike LU ; Persson, Henrik LU ; Bushlya, Volodymyr LU and Ståhl, Jan-Eric LU
- organization
- publishing date
- 2018
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Niobium, machining, surface integrity
- host publication
- Procedia CIRP : 4th CIRP Conference on Surface Integrity (CSI 2018) - 4th CIRP Conference on Surface Integrity (CSI 2018)
- series title
- Procedia CIRP
- volume
- 71
- pages
- 5 pages
- external identifiers
-
- scopus:85051245387
- ISSN
- 2212-8271
- DOI
- 10.1016/j.procir.2018.05.058
- language
- English
- LU publication?
- yes
- id
- 62210f56-5787-40bd-be18-5c560a4fb9e8
- date added to LUP
- 2018-06-14 13:06:29
- date last changed
- 2022-04-17 21:04:58
@inproceedings{62210f56-5787-40bd-be18-5c560a4fb9e8, abstract = {{Single-phase niobium is used in superconducting accelerator components in particle accelerating facilities. Functionality of such accelerator components is placing high demands on the surface quality. Single-phase niobium, as opposed to niobium alloys, is a highly ductile metal, which in a cutting process normally leads to such surface defects as adhesion, built-up edges, side flow, and burr formation. In this study, six different tool materials: uncoated and two types of coated cemented carbide, PCBN, PCD and single-crystal diamond have been tested in longitudinal turning of niobium at different cutting parameters, in order to achieve the target value of Ra = 0.8 μm. Experimental studies involved finish machining with varied feed and cutting speed, while depth of cut was kept at ap = 0.25 mm. Apart from the resulting surface finish Ra and cutting forces, the following surface quality parameters were analysed: side-flow, adhesion, burr formation and sub-surface deformation. Only two of the tool materials, PCD and nanolaminate TiAlN/TiSiN coated cemented carbide, have shown acceptable surface integrity results.}}, author = {{Olsson, Mike and Persson, Henrik and Bushlya, Volodymyr and Ståhl, Jan-Eric}}, booktitle = {{Procedia CIRP : 4th CIRP Conference on Surface Integrity (CSI 2018)}}, issn = {{2212-8271}}, keywords = {{Niobium; machining; surface integrity}}, language = {{eng}}, pages = {{413--417}}, series = {{Procedia CIRP}}, title = {{Surface roughness and sub-surface deformation measurements in machining of niobium}}, url = {{http://dx.doi.org/10.1016/j.procir.2018.05.058}}, doi = {{10.1016/j.procir.2018.05.058}}, volume = {{71}}, year = {{2018}}, }