Cutting temperatures in hard turning chromium hardfacings with PCBN tooling

Ren, Xuejun; Yang, Qingxiang; James, R. D.; Wang, L

doi:10.1016/j.jmatprotec.2003.10.013

Cited by 53 publications

(25 citation statements)

References 21 publications

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“…In general, indentation studies have only been interested in the response of the indenter and substrate before cutting initiates [1][2][3][4][5][6][7][8][9], while cutting studies [10][11][12][13][14][15][16][17][18][19][20][21][22][23] have generally examined the long term response of the cutting process, where material separation or cutting reaches a steady state.…”

Section: Introductionmentioning

confidence: 99%

“…Where anisotropy existed in the substrate, a full three-dimensional analysis was employed [14]. On the other hand, the cutting tool or instrument has been modelled as both rigid [10,11,15,16] and/or deformable [12,[16][17][18][19][20]. In the deformable cases, the authors were interested in determining temperature distributions [12,18], wear [16,19], displacements [17], or mode shapes [20] in the cutting tool.…”

Section: Introductionmentioning

confidence: 99%

“…Many different approaches such as cohesive zone models [10], the CockroftLatham model [11], virtual crack extension method [14], fracture mechanics [14] and element deletion using a shear failure criterion [16] have been used to simulate material separation as the cutting commences. To solve the problem many different commercially available finite element codes, such as ABAQUS [10,16], DEFORM-2D [11,19], MARC [12,13,15], SAMCEF [14] and ANSYS [17,18] have been used, with no fundamental underpinning reason for the particular choice of code.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the sharpness of straight edge blades in cutting soft solids: Part II – Analysis of blade geometry

McCarthy

Annaidh

Gilchrist

2010

Engineering Fracture Mechanics

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In Part I of this paper a new metric, titled the "Blade Sharpness Index" or "BSI", for quantifying the sharpness of a straight edge blade when cutting soft solids was derived from first principles and verified experimentally by carrying out indentation type cutting tests with different blades types cutting different target or substrate materials. In this Part II companion paper, a finite element model is constructed to examine the effect of different blade variables including tip radius, wedge angle and blade profile on the BSI developed in Part I. The finite element model is constructed using ABAQUS implicit and experiments are performed to characterise the non-linear material behaviour observed in the elastomeric substrate. The model is validated against the experiments performed in Part I and a suitable failure criterion is determined by carrying out experiments on blades with different tip radii. The paper finds that a simple maximum stress criterion is a good indicator for predicting the onset of cutting.The validated model is then used to examine blade geometry. It is shown that finite element analysis is an important tool in helping to understand the mechanics of indentation.Furthermore, the study finds that all the blade geometric variables have an influence on the

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On the sharpness of straight edge blades in cutting soft solids: Part II – Analysis of blade geometry

McCarthy

Annaidh

Gilchrist

2010

Engineering Fracture Mechanics

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“…The last evolution is certainly the high speed machining introduction (HSM) HSM for Stellite hardfacing layers is just at its first steps. In fact, conclusion of studies about high speed and dry machining of hardfacing [6][7][8] show that machining are limited by a premature wear. Machining is escorted by a chip adhesion, a cutting edge chipping, a grinding and a strain hardening of the machined layer.…”

Section: Introductionmentioning

confidence: 99%

Machinability of Stellite 6 hardfacing

Benghersallah

Boulanouar

Coz

et al. 2010

EPJ Web of Conferences

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Abstract. This paper reports some experimental findings concerning the machinability at high cutting speed of nickel-base weld-deposited hardfacings for the manufacture of hot tooling. The forging work involves extreme impacts, forces, stresses and temperatures. Thus, mould dies must be extremely resistant. The aim of the project is to create a rapid prototyping process answering to forging conditions integrating a Stellite 6 hardfacing deposed PTA process. This study talks about the dry machining of the hardfacing, using a two tips machining tool and a high speed milling machine equipped by a power consumption recorder Wattpilote. The aim is to show the machinability of the hardfacing, measuring the power and the tip wear by optical microscope and white light interferometer, using different strategies and cutting conditions.

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“…Tay [7] has classified the methods of calculation of the temperature generated during steady machining as: the moving heat source method, the image sources method, the finite difference method, the semi-analytical methods and the finite element method. Due to the irregular tool geometry, the majority of numerical techniques use finite element method [8][9][10][11][12][13]. One thing that the models (unsteady or steady state) have in common is that the generated heat source must be known or defined a priori considering the basic machining parameters such as rake angle, cutting speed and feed rate.…”

Section: Introductionmentioning

confidence: 99%