Sökning: "Chip breakability"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Chip breakability.

  1. 1. Improved finite element modelingfor chip morphology prediction inmachining of C45E steel

    Författare :Ashwin Moris Devotta; Tomas Beno; Mahdi Eynian; Ronnie Löf; Erik Tyldhed; Leonardo De Chiffre; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chip curl; Chip flow; Chip segmentation; Computed Tomography; Damage modeling; Flow stress modeling; Machining; Spånkrökning; Spånflöde; Spånsegmentering; Datortomografi; Skademodelleringen; Modellering av Flytspänning; Bearbetning; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : Within the manufacturing of metallic components, machining plays an important role and is of vital significance to ensure process reliability. From a cutting tool design perspective, physics-based numerical modeling that can predict chip morphology is highly necessary to design tool macro geometry. LÄS MER

  3. 2. Effects on Machinability due to Microstructure Variations in Case Hardening Steel

    Författare :Karin Björkeborn; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machinability; Short-term test; Microstructure; Pearlite Nodular Size; Case Hardening Steel; Chip breakability.;

    Sammanfattning : Typical products made of case hardening steel are transmission parts like gear wheels, pinions and crown wheels. Case hardening produces a carbon-rich surface and provides the parts with both enhanced hardness and fatigue life. LÄS MER

  4. 3. Influence of Material Variations on Machinability - Machining Difficult-to-Machine Alloys

    Författare :Stefan Cedergren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Alloy 718; Superalloys; Ti-6Al-4V; segmented chip; 316L;

    Sammanfattning : The aim of this study is to investigate the effect of work material variations on machinability. Improved knowledge in this respect supports the development of sustainable production both from resource and economical points of view.The properties of work materials vary greatly depending on how they were manufactured. LÄS MER

  5. 4. Evaluation of Non-Metallic Inclusions after Deformation and Their Effect on the Machinability of Steel

    Författare :SHUO GUO; Pär Jönsson; Andrey Karasev; Anders Tilliander; Robert Eriksson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel; Heat treatment; REM-treat steel; Ce modification; Chip breakability; weight distribution of chips Non-metallic inclusions; Deformation; Electrolytic extraction; stål; värmebehandling; REM-behandlade stål; Ce modifiering; spånbrytning; viktsdistribution av spån; icke-metalliska inneslutningar; deformation; elektrolytisk extraktion.; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : The presence of non-metallic inclusions (NMIs) have critical effects on both the mechanical properties and machinability of steels. In the present thesis, one focus is to study the characteristics of deformed sulfides (MnS) for a stainless steel (3R65) and a tool steel (42CrMo4). LÄS MER

  7. 5. Evaluations of Non-metallic Inclusionsin Ca-treated Steels and Their Effect on the Machinability

    Författare :Hongying Du; Andrey Karasev; Pär Jönsson; Lauri Holappa; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; non-metallic inclusions; Ca treatment; stainless steel; machinability.; icke-metalliska inneslutningar; kalciumbehandling; rostfritt stål; skärbarhet.; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : In recent decades, a considerable development of steel with respect to the performance of steel has taken place, which also has resulted in large challenges to process these steel grades. Therefore, it is essential to make suitable modifications of non-metallic inclusions (NMI) in the steelmaking process and to have a good control of its characteristics to meet the target mechanical properties and to obtain a good machinability. LÄS MER