SURFACE INTEGRITY OF SILICON CARBIDE MACHINED BY DIAMOND WIRE SAWING: EFFECT OF FEED RATE

Natalie Souza Heinz; Lucas Cominetti Marchi; Gabriel Kons Cardoso; Fernando Moreira Bordin; Fabio Antonio Xavier; Marcio Celso Fredel; Erick Cardoso Costa

Todos os Trabalhos

Trabalho Completo

Resumo

DOI

10.29327/9786527218647.1199815

Título do Trabalho

SURFACE INTEGRITY OF SILICON CARBIDE MACHINED BY DIAMOND WIRE SAWING: EFFECT OF FEED RATE

Autores

Natalie Souza Heinz
Lucas Cominetti Marchi
Gabriel Kons Cardoso
Fernando Moreira Bordin
Fabio Antonio Xavier
Marcio Celso Fredel
Erick Cardoso Costa

Modalidade

Trabalho Completo

Área temática

Textura e Integridade da Superfície

Data de Publicação

21/11/2025

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/xxvii_coloquio_usinagem/1199815-surface-integrity-of-silicon-carbide-machined-by-diamond-wire-sawing--effect-of-feed-rate

ISBN

978-65-272-1864-7

Palavras-Chave

silicon carbide, diamond wire sawing, surface integrity, machining parameters, brittle materials.

Resumo

This study investigates the influence of feed rate on the surface integrity of silicon carbide (SiC) machined by the diamond wire sawing (DWS) process. SiC is a ceramic material extensively used in strategic applications due to its high hardness, chemical stability, and thermal resistance; however, it poses significant challenges in machining, often resulting in severe surface damage. The experiments were performed using a precision endless diamond wire saw with controlled cutting parameters. The cutting speed and wire tension were kept constant at 17 m/s and 20 N, respectively, while the feed rate varied at 0.5, 1.0, and 1.5 mm/min. Surface morphology was analyzed by scanning electron microscopy (SEM), and surface roughness was measured using a contact profilometer. The results showed that lower feed rates favored the ductile removal regime, leading to surfaces with better quality, lower roughness (Ra = 0.42 μm), fewer microcracks, and more uniform morphology. In contrast, higher feed rates promoted brittle fracture mechanisms, resulting in higher roughness (Ra = 1.21 μm), deeper grooves, and a significant increase in microcracks and surface defects. The functional roughness parameters (Rsk and Rku) confirmed the topographical degradation at higher feed rates, with negative skewness indicating the predominance of valleys from intergranular fractures and high kurtosis reflecting sharp topographical features. The study highlights that controlling the feed rate is crucial for optimizing the balance between productivity and surface integrity in SiC machining by DWS.

Título do Evento: XXVII Colóquio de Usinagem
Cidade do Evento: Belo Horizonte
Título dos Anais do Evento: Anais do Colóquio de Usinagem
Nome da Editora: Even3
Meio de Divulgação: Meio Digital
DOI

Como citar

HEINZ, Natalie Souza et al.. SURFACE INTEGRITY OF SILICON CARBIDE MACHINED BY DIAMOND WIRE SAWING: EFFECT OF FEED RATE.. In: Anais do Colóquio de Usinagem. Anais...Belo Horizonte(MG) UFMG, 2025. Disponível em: https//www.even3.com.br/anais/xxvii_coloquio_usinagem/1199815-SURFACE-INTEGRITY-OF-SILICON-CARBIDE-MACHINED-BY-DIAMOND-WIRE-SAWING--EFFECT-OF-FEED-RATE. Acesso em: 05/04/2026