Effects of milling condition on the surface integrity of hot forged steel
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1678-58782010000100006 http://hdl.handle.net/11449/40173 |
Resumo: | This paper presents a study on the influence of milling condition on workpiece surface integrity focusing on hardness and roughness. The experimental work was carried out on a CNC machining center considering roughing and finishing operations. A 25 mm diameter endmill with two cemented carbide inserts coated with TiN layer were used for end milling operation. Low carbon alloyed steel Cr-Mo forged at 1200 degrees C was used as workpiece on the tests. Two kinds of workpiece conditions were considered, i.e. cur cooled after hot forging and normalized at 950 degrees C for 2 h. The results showed that finishing operation was able to significantly decrease the roughness by at least 46% without changing the hardness. on the other hand, roughing operation caused an increase in hardness statistically significant by about 6%. The machined surface presented deformed regions within feed marks, which directly affected the roughness. Surface finish behavior seems to correlate to the chip ratio given the decrease of 25% for roughing condition, which damaged the chip formation. The material removal rate for finishing operation 41% greater than roughing condition demonstrated to be favorable to the heat dissipation and minimized the effect on material hardness. |
id |
UNSP_27afb2dc0857ea9eb9ed36c604f35817 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/40173 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Effects of milling condition on the surface integrity of hot forged steelhigh-speed cuttingmillinghardnessroughnesssurface integrityThis paper presents a study on the influence of milling condition on workpiece surface integrity focusing on hardness and roughness. The experimental work was carried out on a CNC machining center considering roughing and finishing operations. A 25 mm diameter endmill with two cemented carbide inserts coated with TiN layer were used for end milling operation. Low carbon alloyed steel Cr-Mo forged at 1200 degrees C was used as workpiece on the tests. Two kinds of workpiece conditions were considered, i.e. cur cooled after hot forging and normalized at 950 degrees C for 2 h. The results showed that finishing operation was able to significantly decrease the roughness by at least 46% without changing the hardness. on the other hand, roughing operation caused an increase in hardness statistically significant by about 6%. The machined surface presented deformed regions within feed marks, which directly affected the roughness. Surface finish behavior seems to correlate to the chip ratio given the decrease of 25% for roughing condition, which damaged the chip formation. The material removal rate for finishing operation 41% greater than roughing condition demonstrated to be favorable to the heat dissipation and minimized the effect on material hardness.São Paulo State Univ UNESP, Engn Fac Ilha Solteira, BR-15385000 Ilha Solteira, SP, BrazilSão Paulo State Univ UNESP, Engn Fac Ilha Solteira, BR-15385000 Ilha Solteira, SP, BrazilAbcm Brazilian Soc Mechanical Sciences & EngineeringUniversidade Estadual Paulista (Unesp)Rodrigues, Alessandro R. [UNESP]Matsumoto, HidekasuYamakami, Wyser J.Paulo, Rafael Gustavo da R.de Assis, Cleiton Lazaro F.2014-05-20T15:30:53Z2014-05-20T15:30:53Z2010-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article37-43application/pdfhttp://dx.doi.org/10.1590/S1678-58782010000100006Journal of The Brazilian Society of Mechanical Sciences and Engineering. Rio de Janeiro Rj: Abcm Brazilian Soc Mechanical Sciences & Engineering, v. 32, n. 1, p. 37-43, 2010.1678-5878http://hdl.handle.net/11449/40173S1678-58782010000100006WOS:000277928000006S1678-58782010000100006-en.pdf0184075204510977Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Brazilian Society of Mechanical Sciences and Engineering1.6270,362info:eu-repo/semantics/openAccess2024-01-19T06:35:07Zoai:repositorio.unesp.br:11449/40173Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-19T06:35:07Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effects of milling condition on the surface integrity of hot forged steel |
title |
Effects of milling condition on the surface integrity of hot forged steel |
spellingShingle |
Effects of milling condition on the surface integrity of hot forged steel Rodrigues, Alessandro R. [UNESP] high-speed cutting milling hardness roughness surface integrity |
title_short |
Effects of milling condition on the surface integrity of hot forged steel |
title_full |
Effects of milling condition on the surface integrity of hot forged steel |
title_fullStr |
Effects of milling condition on the surface integrity of hot forged steel |
title_full_unstemmed |
Effects of milling condition on the surface integrity of hot forged steel |
title_sort |
Effects of milling condition on the surface integrity of hot forged steel |
author |
Rodrigues, Alessandro R. [UNESP] |
author_facet |
Rodrigues, Alessandro R. [UNESP] Matsumoto, Hidekasu Yamakami, Wyser J. Paulo, Rafael Gustavo da R. de Assis, Cleiton Lazaro F. |
author_role |
author |
author2 |
Matsumoto, Hidekasu Yamakami, Wyser J. Paulo, Rafael Gustavo da R. de Assis, Cleiton Lazaro F. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Rodrigues, Alessandro R. [UNESP] Matsumoto, Hidekasu Yamakami, Wyser J. Paulo, Rafael Gustavo da R. de Assis, Cleiton Lazaro F. |
dc.subject.por.fl_str_mv |
high-speed cutting milling hardness roughness surface integrity |
topic |
high-speed cutting milling hardness roughness surface integrity |
description |
This paper presents a study on the influence of milling condition on workpiece surface integrity focusing on hardness and roughness. The experimental work was carried out on a CNC machining center considering roughing and finishing operations. A 25 mm diameter endmill with two cemented carbide inserts coated with TiN layer were used for end milling operation. Low carbon alloyed steel Cr-Mo forged at 1200 degrees C was used as workpiece on the tests. Two kinds of workpiece conditions were considered, i.e. cur cooled after hot forging and normalized at 950 degrees C for 2 h. The results showed that finishing operation was able to significantly decrease the roughness by at least 46% without changing the hardness. on the other hand, roughing operation caused an increase in hardness statistically significant by about 6%. The machined surface presented deformed regions within feed marks, which directly affected the roughness. Surface finish behavior seems to correlate to the chip ratio given the decrease of 25% for roughing condition, which damaged the chip formation. The material removal rate for finishing operation 41% greater than roughing condition demonstrated to be favorable to the heat dissipation and minimized the effect on material hardness. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 2014-05-20T15:30:53Z 2014-05-20T15:30:53Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1678-58782010000100006 Journal of The Brazilian Society of Mechanical Sciences and Engineering. Rio de Janeiro Rj: Abcm Brazilian Soc Mechanical Sciences & Engineering, v. 32, n. 1, p. 37-43, 2010. 1678-5878 http://hdl.handle.net/11449/40173 S1678-58782010000100006 WOS:000277928000006 S1678-58782010000100006-en.pdf 0184075204510977 |
url |
http://dx.doi.org/10.1590/S1678-58782010000100006 http://hdl.handle.net/11449/40173 |
identifier_str_mv |
Journal of The Brazilian Society of Mechanical Sciences and Engineering. Rio de Janeiro Rj: Abcm Brazilian Soc Mechanical Sciences & Engineering, v. 32, n. 1, p. 37-43, 2010. 1678-5878 S1678-58782010000100006 WOS:000277928000006 S1678-58782010000100006-en.pdf 0184075204510977 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering 1.627 0,362 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
37-43 application/pdf |
dc.publisher.none.fl_str_mv |
Abcm Brazilian Soc Mechanical Sciences & Engineering |
publisher.none.fl_str_mv |
Abcm Brazilian Soc Mechanical Sciences & Engineering |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965669116084224 |