Some Observations of the Chip Formation Process and the White Layer Formation in High Speed Milling of Hardened Steel

Ekinović, Sabahudin; Dolinšek, Slavko; Jawahir, I.S.

doi:10.1081/mst-200029250

Cited by 30 publications

(17 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under severe cutting conditions, such as high hardness of workpiece material and high cutting speed, failure is caused by ductile fracture; otherwise, failure occurs through large strain plastic deformation. Increasing workpiece material hardness, cutting speed, undeformed chip thickness and flank land, as well as a more negative rake angle, can result in saw-tooth chip formation [19][20][21][22][23][24]. Ekinovic et al [20] divided the chip cross-sectional area into two parts.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of wear behavior and chip formation for cutting tools with nano-multilayered TiAlCrN/NbN PVD coating

Veldhuis

Yamamoto

2008

International Journal of Machine Tools and Manufacture

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

“…Increasing workpiece material hardness, cutting speed, undeformed chip thickness and flank land, as well as a more negative rake angle, can result in saw-tooth chip formation [19][20][21][22][23][24]. Ekinovic et al [20] divided the chip cross-sectional area into two parts. One was the deformed part and the other was the undeformed part.…”

Section: Introductionmentioning

confidence: 99%

Investigation of wear behavior and chip formation for cutting tools with nano-multilayered TiAlCrN/NbN PVD coating

Veldhuis

Yamamoto

2008

International Journal of Machine Tools and Manufacture

View full text Add to dashboard Cite

“…Its benefits include, besides the obvious reduction of cutting time, the chance to obtain outstanding surface quality and dimensional accuracy and to avoid further finishing operations. Several studies proved significant cost/lead time reductions by the adoption of HSM [8,9,12]. Nevertheless, cutting parameters maximization alone is not enough to guarantee process optimization.…”

Section: Introductionmentioning

confidence: 99%

“…To this aim, the field of high-speed machining (HSM) offers promising advantages that recently widened its application from aluminium alloys to tool steels [5,6,8,9]. Its benefits include, besides the obvious reduction of cutting time, the chance to obtain outstanding surface quality and dimensional accuracy and to avoid further finishing operations.…”

Section: Introductionmentioning

confidence: 99%

“…A key issue towards machining optimization is to model process performances as a function of cutting parameters, so that higher cutting speed and feed can be adopted maintaining surface finish within the acceptable range [4][5][6][7][8][9][10][11]. To this aim, the field of high-speed machining (HSM) offers promising advantages that recently widened its application from aluminium alloys to tool steels [5,6,8,9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High-Speed Milling of Tool Steel Dies for Aluminium Extrusion: Surface Roughness, Dimensional Tolerance and Chip Removal Mechanisms

Bassoli

Minetola

Salmi

2011

Materials and Manufacturing Processes

View full text Add to dashboard Cite

Die finishing has a fundamental importance to ensure a good quality of aluminium extruded parts and involves important economic effects due to the vastness of metalworking industry and the relatively short tool life in this field. Maximum machining efficiency is thus crucial. The research addresses optimization of finishing performances on tool steel extrusion dies. Milling tests are carried out on semimanufactured parts to ensure adherence to standard industrial technological chain, varying cutting parameters towards the field of high-speed machining (HSM). Dimensional tolerance is determined on die lands. Land surface roughness is measured through a multiscale approach and modelled as a function of cutting speed and feed. The above methodology enables a correlation between macroscopic process outcomes and chip removal mechanisms in the microscale.

show abstract

Finite-element Modeling and Simulation

Arrazola

2011

Machining of Hard Materials

View full text Add to dashboard Cite

This chapter deals with the finite-element method (FEM) of hard machining, mainly turning (two-and three-dimensional (3D)). Results about the influence of working conditions and tool geometry (cutting-edge finishing) on tool forces, temperatures, and stresses when machining AISI 52100 steel are presented. In addition, information about residual stresses obtained through 3D FEM analysis is shown. The aim of the chapter is to demonstrate the possibilities of FEM for understanding the chip formation process in hard turning and to show its capabilities in areas like tool insert design and prediction of the surface state of the machined workpiece. First, a brief summary of the state of the art on hard machining is presented. Then FEM capabilities and limitations are shown. After that, results of process simulations will be provided and compared with those obtained in the literature. Finally, overall conclusions are pointed out and future research direction is discussed. IntroductionHard turning has become a relevant manufacturing process in producing finished components that are made of alloyed steels with hardnesses between 50 and 70 HRC [1]. The main aim of employing hard turning is avoiding the grinding operation which in most cases corresponds to the final operation for the workpiece. Comparisons between both processes show that the demanded surface roughness and ISO tolerance standards can be achieved in both processes, but higher flexibility and material removal rates can be obtained in hard turning.

show abstract

Some Observations of the Chip Formation Process and the White Layer Formation in High Speed Milling of Hardened Steel

Cited by 30 publications

References 15 publications

Investigation of wear behavior and chip formation for cutting tools with nano-multilayered TiAlCrN/NbN PVD coating

Investigation of wear behavior and chip formation for cutting tools with nano-multilayered TiAlCrN/NbN PVD coating

High-Speed Milling of Tool Steel Dies for Aluminium Extrusion: Surface Roughness, Dimensional Tolerance and Chip Removal Mechanisms

Finite-element Modeling and Simulation

Contact Info

Product

Resources

About