A study of the machining of cast austenitic stainless-steels with carbide tools

Agrawal, Sameer; Chakrabarti, A.K.; Chattopadhyay, Angshuman

doi:10.1016/0924-0136(94)01616-9

Cited by 27 publications

(12 citation statements)

References 2 publications

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“…Hard abrasive foreign particles in the work material can play a significant role in the wear of tools in which under conditions of sliding, these particles make a greater contribution to abrasive wear than under seizure conditions. During machining of HH-S, the rate of the coating being removed from the rake face at some distance from the tool edge was higher than that in machining LH-S (see figures [5][6][7]. This result indicates that the hardness of the work material has significant influence on the abrasive wear at this region.…”

Section: Morphology Of the Tool Surfacecontrasting

confidence: 57%

“…To achieve a high accuracy of profile on the stainless steel insert, tool wear must be kept to a minimum by using the appropriate tool type and machining parameters. Many researchers have investigated the wear of uncoated and coated carbide tools during turning of stainless steel on conventional lathes at cutting speeds, depths of cut and feed rates of above 50 m/min, 1000 lm and 150 lm/rev, respectively [5][6][7][8][9]. It was found that the cutting temperature could reach up to 1500°C.…”

Section: Introductionmentioning

confidence: 98%

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Performance of Uncoated and Coated Carbide Tools in the Ultra-Precision Machining of Stainless Steel

Liew

Ding

et al. 2004

Tribology Letters

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Ultra-precision machines are widely used to turn aspherical or spherical profiles on mould inserts for the injection moulding of optical lenses. During the turning of a profile on a stainless steel mould insert, the cutting speed reduces significantly to 0 as the cutting tool is fed towards the centre of the machined profile. This paper reports experiments carried out to study the wear of uncoated and PVD-coated carbide tools (carbide tool coated with 2000 alternate layers of AlN and TiN, each layer 1.5 nm and carbide tool coated with 0.5 lm TiN, 5.5 lm TiCN and 0.5 lm TiN) in the ultra-precision machining of STAVAX (modified AISI 420 stainless steel) at low speeds with and without lubricant. A sprayed mixture of compressed air, liquid paraffin oil and cyclomethicone was used as lubricant. Examination of the wear at the rake face of the tool suggests that during machining of the alloy with a hardness of 55 HRC without lubricant, the cutting edge is subjected to high compressive stress, resulting in fracture. Reducing the hardness of the alloy would therefore result in a lower stress acting on the cutting edge, thus rendering the tool less susceptible to fracture. Both the rake and the flank faces of the coated tools exhibited lower wear than the uncoated tools. This was due to the former tools possessing higher fracture resistance owing to the presence of the coating. The lubricant was effective in improving surface finish, preventing surface fracture and reducing flank wear.

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Section: Morphology Of the Tool Surfacecontrasting

confidence: 57%

Section: Introductionmentioning

confidence: 98%

Performance of Uncoated and Coated Carbide Tools in the Ultra-Precision Machining of Stainless Steel

Liew

Ding

et al. 2004

Tribology Letters

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“…It was found that tool failure at tool nose was the dominant wear mechanism which was due to high cutting forces and sharp edge shipping. Agrawal et al [6] studied the performance of coated and uncoated carbide tools in turning operations of cast austenitic stainless steels. The study reported that the composition of stainless steel grades influenced the tool wear and tool-chip adherence.…”

Section: Introductionmentioning

confidence: 99%

High-speed end-milling of AISI 304 stainless steels using new geometrically developed carbide inserts

Abou-El-Hossein

Yahya

2005

Journal of Materials Processing Technology

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“…Machining of cast austenitic Stainless steels with carbide tools were studied by Agrawal et al The relative performance of coated and uncoated carbide tools in the machining of cast austenitic Stainless steels were assessed with reference to cutting force requirement (both horizontal force -P x and vertical force -P z ), tool rakeface wear and chip characteristics. It was reported that the composition of stainless steel work piece influences machinability [7]. Machinability of austenitic Stainless steel SS303 was investigated by O'Sullivan and Cotterell.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cutting Speed, Feed Rate and Bulk Texture on the Surface Finish of Nitrogen Alloyed Duplex Stainless Steels during Dry Turning

Selvaraj¹

2010

Engineering

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This paper presents the results of experimental work carried out in dry turning of cast duplex stainless steels (ASTM A 995 Grade4A and ASTM A 995 Grade5A) using TiC and TiCN coated cemented carbide cutting tools. The turning tests were conducted at five different cutting speeds (80, 100, 120, 140 and 160 m/min) and three different feed rates (0.04, 0.08 and 0.12 mm/rev) with a constant depth of cut (0.5 mm). The influence of cutting speed and feed rate on the machined surface roughness was investigated. Texture analysis (Bulk) was also carried out to study the impact of preferred orientation on the resulting surface roughness. The result reveals that the increasing cutting speed decreases the surface roughness till a particular point and then increases whereas; the surface roughness value decreases with the decreasing feed rate. Presence of alpha fiber (Bulk texture analysis) in the austenite phase of 4A work piece material leads to better surface finish. Among both the grades, surface finish of grade 4A is better than grade 5A work piece material

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A study of the machining of cast austenitic stainless-steels with carbide tools

Cited by 27 publications

References 2 publications

Performance of Uncoated and Coated Carbide Tools in the Ultra-Precision Machining of Stainless Steel

Performance of Uncoated and Coated Carbide Tools in the Ultra-Precision Machining of Stainless Steel

High-speed end-milling of AISI 304 stainless steels using new geometrically developed carbide inserts

Influence of Cutting Speed, Feed Rate and Bulk Texture on the Surface Finish of Nitrogen Alloyed Duplex Stainless Steels during Dry Turning

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