Publication:
Effects of online workpiece preheating on the machinability of hardened steel AISI H13 during end milling and development of prediction models using RSM

dc.contributor.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#en_US
dc.contributor.authorAbdullah Mohammad Khalid Hafizen_US
dc.date.accessioned2024-10-08T03:18:13Z
dc.date.available2024-10-08T03:18:13Z
dc.date.issued2008
dc.description.abstractHardened materials like AISI H13 tool steel are generally regarded as a difficult to cut materials because of their high hardness due to intense carbon content, which however allows them to be used extensively in the hot working tools, dies and moulds. The challenges in machining steels at their hardened state led the way to many research works in amelioration its machinability. This Masters dissertation introduces online heating as one of the new variable parameters to improve the machinability of H13 hardened steel. In the current work the influence of heating parameter i.e. heating temperature; cutting variable, such as cutting speed, feed and axial depth of cut and cutting tool materials, TiAlN coated carbide and PCBN inserts; on different aspects of machinability of H13, were investigated during end milling operation on a CNC Vertical Machining Center (VMC). The study includes identification of relationship between tool life and surface roughness on one hand and the variable parameters, mentioned above on the other. The machining experiments were conducted in two phases, namely, room temperature and preheated machining condition. Response Surface Methodology (RSM) was used to develop empirical models of surface roughness and tool life both for room temperature and preheated machining condition using the data generated from the machining experiments. The comparison between room temperature and preheated machining were made in terms of surface roughness, tool life and machine tool vibration. It was found that preheating had reduced the tool wear, surface roughness and vibration acceleration amplitudes to a desired level. The effects of preheating temperature were also investigated on the chip morphology during the end milling of AISI H13 tool steel, which resulted in reduction of primary chip serration frequency.en_US
dc.description.callnumbert TJ1185A136E 2008en_US
dc.description.degreelevelMaster
dc.description.identifierThesis : Effects of online workpiece preheating on the machinability of hardened steel AISI H13 during end milling and development of prediction models using RSM / by Abdullah Mohammad Khalid Hafizen_US
dc.description.identityt00011074832ABDULLAHMOHAMMADTJ1185A136E2008en_US
dc.description.kulliyahKulliyyah of Engineeringen_US
dc.description.notesThesis (MSc. MFG)--International Islamic University Malaysia, 2008en_US
dc.description.physicaldescriptionxxi, 180 leaves : ill. ; 30 cm.en_US
dc.description.programmeMaster of Science in Manufacturing Engineeringen_US
dc.identifier.urihttps://studentrepo.iium.edu.my/handle/123456789/7124
dc.identifier.urlhttps://lib.iium.edu.my/mom/services/mom/document/getFile/HRyAK9JlOb47BaPmiOjJogOIPBrYrlF820090821154304015
dc.language.isoenen_US
dc.publisherGombak : International Islamic University Malaysia, 2008en_US
dc.rightsCopyright International Islamic University Malaysia
dc.subject.lcshHard materials -- Machiningen_US
dc.subject.lcshMachiningen_US
dc.titleEffects of online workpiece preheating on the machinability of hardened steel AISI H13 during end milling and development of prediction models using RSMen_US
dc.typeMaster Thesisen_US
dspace.entity.typePublication

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