Dry machinability analyses between free cutting, resulfurized, and carbon steels

Krähmer, Daniel; Urbicain, G.; Egea, Antonio J. Sánchez

doi:10.1080/10426914.2020.1734615

Cited by 10 publications

(1 citation statement)

References 19 publications

(23 reference statements)

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“…[8] Regarding free-cutting steels, where MnS in the microstructure is adhered to the leading face of the cutting tool, forming a tribofilm and acting as a solid self-lubricant. [9,10] Instead, the polishability of AISI P20 + S steel is significantly impaired. As for the second case, AISI P20+ Ni steel allows generating a substantial improvement of the polishability.…”

Section: Introductionmentioning

confidence: 99%

Milling force model for asymmetric end-mills during high-feed milling on AISI-P20

Russo

Urbicain²,

Egea

et al. 2021

Materials and Manufacturing Processes

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Manufacturing molds for plastic parts injection are a particular machining domain, where challenging materials, like AISI P20 steel, are forced to satisfy the highest surface quality requirements. Before mirror polishing, milling operation is a common and challenging task due to drilling and milling with the same tool. Thus, special cutting tools, like asymmetric indexable type, are often used. This tool presents two geometrically equal positive inserts -one placed horizontally and the other vertically -for the flexible machining of holes, cavities, floors, and walls. Rough-medium milling operations lead to a complicated relationship between cutting conditions and geometrical tool parameters, making it challenging to balance the tool life of both inserts. The novelty of this work is to propose a model for cutting force prediction with an asymmetric tool to explain the separated behavior of both inserts and determine a better compromise between cutting conditions and tool life. The experimental tests were done for model validation and then wear cutting tests for testing improved cutting conditions. The results predicted by the model proved that by changing the depth of cut from 0.3 mm to 0.8 mm, the wear in both inserts was more balanced, increasing chip volume up to 1.7 times.

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Section: Introductionmentioning

confidence: 99%

Milling force model for asymmetric end-mills during high-feed milling on AISI-P20

Russo

Urbicain²,

Egea

et al. 2021

Materials and Manufacturing Processes

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Correlating dry wear turning and pin-on-disc tests: a cost-effective approach to machinability evaluation for low carbon steel grades

Krahmer,

Martynenko,

Osenda

et al. 2023

J Braz. Soc. Mech. Sci. Eng.

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Machinability tests play a crucial role in the metalworking industry despite their inherent cost and time requirements. This study aims to introduce a novel approach by establishing a correlation between the dry wear turning and pin-on-disc tests, potentially enabling their interchangeability. The industry is particularly interested in this challenge due to the simplified implementation and reduced costs and time compared to the conventional turning test. The correlation between the dry wear turning and pin-on-disc tests was investigated using three low carbon steel grades (12L14, 1212, and 1018) and three medium cutting speeds (150, 180, and 240 m/min). Additionally, a comprehensive cost-energy comparison is conducted to underscore the significance of identifying a laboratory test equivalent to the traditional machinability test. The obtained results reveal a strong correlation between both wear tests. Furthermore, the relative cost analysis demonstrates that the pin-on-disc test costs only 14% of the long-duration turning test, emphasizing its cost-effectiveness.

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Comprehensive review of advanced methods for improving the parameters of machining steels

Machado,

da Silva,

Pimenov

et al. 2024

Journal of Manufacturing Processes

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Dry machinability analyses between free cutting, resulfurized, and carbon steels

Cited by 10 publications

References 19 publications

Milling force model for asymmetric end-mills during high-feed milling on AISI-P20

Milling force model for asymmetric end-mills during high-feed milling on AISI-P20

Correlating dry wear turning and pin-on-disc tests: a cost-effective approach to machinability evaluation for low carbon steel grades

Comprehensive review of advanced methods for improving the parameters of machining steels

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