Ceramic tool wear when machining austempered ductile iron

Austempered ductile iron castings (ADI) are characterized by the high strength and resistance to fatigue, impact, and wear. ADI mechanical properties are obtained by performing a heat treatment on ductile iron casting. Thus, the so-called ausferrite microstructure is achieved. However, heat treatment significantly affects ductile casting machinability. A precise determination of ADI microstructure, on the one hand, and to choose correct machining process parameters and tool wear control on the other, are essential to optimize cutting processes and for the introduction of ceramic inserts. Ceramics are an alternative to carbide tools. In this paper, ceramic tools for the dry turning of ADI castings are studied. Thus, different technical ceramics were analyzed, identifying the dominant wear mechanism and evolution. Tool wear rate magnitude was determined indirectly by the variation of cutting force along machining time. Finally, different tests helped to study ceramics wear sensitivity with respect to cutting parameters. Mixed ceramics of Al2O3 with TiC showed the best performance, followed by SiAlON ones.

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Optimization of surface roughness and tool wear in hard turning of austempered ductile iron (grade 3) using Taguchi method

Measurement ◽

10.1016/j.measurement.2016.06.055 ◽

2016 ◽

Vol 93 ◽

pp. 108-116 ◽

Cited By ~ 33

Author(s):

D. Manivel ◽

R. Gandhinathan

Keyword(s):

Surface Roughness ◽

Tool Wear ◽

Taguchi Method ◽

Ductile Iron ◽

Hard Turning ◽

Austempered Ductile Iron ◽

Grade 3 ◽

Iron Grade

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Specific cutting force, tool wear and chip morphology characteristics during dry drilling of austempered ductile iron (ADI)

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-013-5220-6 ◽

2013 ◽

Vol 69 (9-12) ◽

pp. 2833-2841 ◽

Cited By ~ 13

Author(s):

A. Meena ◽

M. El Mansori

Keyword(s):

Tool Wear ◽

Cutting Force ◽

Ductile Iron ◽

Chip Morphology ◽

Austempered Ductile Iron ◽

Specific Cutting Force ◽

Dry Drilling ◽

Morphology Characteristics

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Bohren von ausferritischem Gusseisen mit Kugelgraphit*/Drilling of austempered ductile iron – Impact of the cutting edge geometry on tool wear and machining result

wt Werkstattstechnik online ◽

10.37544/1436-4980-2019-06-98 ◽

2019 ◽

Vol 109 (06) ◽

pp. 496-504

Author(s):

J. Hartig ◽

B. Kirsch ◽

J. C. Aurich

Keyword(s):

Tool Wear ◽

Tungsten Carbide ◽

Ductile Iron ◽

Cutting Edge ◽

Machining Process ◽

Austempered Ductile Iron ◽

Edge Geometry ◽

Cutting Edge Preparation ◽

Edge Preparation ◽

Homogeneous Preparation

Die Schneidkantenpräparation erlaubt ein gezieltes Anpassen des Werkzeugs an die Bearbeitungsaufgabe bei der Zerspanung. Homogene Präparationen können dabei entweder auf hohe Belastungen des Werkzeugs oder ein optimiertes Bearbeitungsergebnis im Sinne der Oberfläche ausgelegt werden. Mittels inhomogener Schneidkantenpräparation können die unterschiedlichen Anforderungen entlang des Eingriffs individuell in einem Werkzeug vereint werden. Im Beitrag wurden die Schneidkanten eines Wendeschneidplatten-Bohrwerkzeugs unterschiedlich homogen und inhomogen präpariert. Neben dem Werkzeugverschleiß wurde das Prozessergebnis beim Bohren von ausferritischem Gusseisen mit Kugelgraphit (ADI) 900 untersucht.   By using cutting edge preparation, tools can be tailored to the machining process. A homogeneous preparation can either be designed for high loads in the machining process or an optimized machining result on the surface. In contrast, an inhomogeneous cutting edge design can individually be designed to the machining task. In the article, the cutting edges of tungsten carbide indexable inserts were prepared homogeneous and inhomogeneous. Tool wear and machining result during drilling austempered ductile iron (ADI) 900 was investigated.

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