Improvement of Cutting Tool Life by AlN Deposition on the Tool

Yaguchi, Hiroshi; Ozaki, Katsuhiko; Somekawa, Masami

doi:10.2355/isijinternational.44.598

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…6) The Al addition forms Al-based oxides on the tool surface accompanied with MnS suppressing tool damage, 7) promotes the adhesive wear, 5) and generates an AlN thin film on the tool surface as a protective layer. 8) According to the prior studies, the effects of Si or Al on machinability depend on the work material hardness, the tool type, the cutting manner, the cutting conditions, etc. Therefore, machinability of carbon steel containing Si or Al should be studied systematically to clarify these effects based on the target process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Si and Al Additions to Steel on Machinability in Gear Cutting

Aiso

Matsumura

2022

ISIJ Int.

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The influence of Si and Al additions to 0.55 mass% C steel on machinability is discussed in cutting with a fly tool of TiAlN coated high speed steel, as performed in gear cutting. Three model steels are prepared with controlling nearly the same hardness to study the effects of the alloying elements: one reference steel with C as the only alloying element (Base steel), and two steels alloyed also with 1 mass% Si or Al. The cutting tests are performed to obtain the cutting forces, observe the cutting chips and analyze the damage on the rake faces of the tools. The orthogonal cutting data in the cutting force simulation are identified to minimize the discrepancies between the measured and the simulated forces for the tested steels. When cutting the Base steel, few adhered materials form and the coated thin layer is worn mainly by abrasion. When cutting the Si alloyed steel, the coating surface is covered by adhered layers containing Si-O, Fe 2 SiO 4 and FeO, which contribute to the lowest friction and protect the coated thin layer from wear. When cutting the Al alloyed steel, an Al 2 O 3 layer forms on the coating. The Al 2 O 3 layer induces high friction, large cutting forces and cutting heat, resulting in the rapid substrate softening and coating fracture.

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Section: Introductionmentioning

confidence: 99%

Effect of Si and Al Additions to Steel on Machinability in Gear Cutting

Aiso

Matsumura

2022

ISIJ Int.

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Effect of Si and Al additions to carbon steel on material transfer and coating damage mechanism in turning with CVD coated tools

Aiso

Wiklund

Kubota

et al. 2016

Wear

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Effect of Si and Al Additions to Steel on Machinability in Gear Cutting

Aiso

Matsumura

2021

Tetsu-to-Hagane

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The influence of Si and Al additions to 0.55 mass% C steel on machinability is discussed in cutting with a fly tool of TiAlN coated high speed steel, as performed in gear cutting. Three model steels are prepared with controlling nearly the same hardness to study the effects of the alloying elements: one reference steel with C as the only alloying element (Base steel), and two steels alloyed also with 1 mass% Si or Al. The cutting tests are performed to obtain the cutting forces, observe the cutting chips and analyze the damage on the rake faces of the tools. The orthogonal cutting data in the cutting force simulation are identified to minimize the discrepancies between the measured and the simulated forces for the tested steels. When cutting the Base steel, few adhered material form and the coated thin layer is worn mainly by abrasion. When cutting the Si alloyed steel, the coating surface is covered by adhered layers containing Si-O, Fe 2 SiO 4 and FeO, which contribute to the lowest friction and protect the coated thin layer from wear. When cutting the Al alloyed steel, an Al 2 O 3 layer forms on the coating. The Al 2 O 3 layer induces high friction, large cutting forces and cutting heat, resulting in the rapid substrate softening and coating fracture.

show abstract

Improvement of Cutting Tool Life by AlN Deposition on the Tool

Cited by 3 publications

References 9 publications

Effect of Si and Al Additions to Steel on Machinability in Gear Cutting

Effect of Si and Al Additions to Steel on Machinability in Gear Cutting

Effect of Si and Al additions to carbon steel on material transfer and coating damage mechanism in turning with CVD coated tools

Effect of Si and Al Additions to Steel on Machinability in Gear Cutting

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