Optimized design of structural parameters of Si3N4-based ceramic tools with variable cross-section

被引：5

作者：

Xu, Weiwei ^{[1
]}

Yang, Di ^{[1
]}

Yan, Guodong ^{[2
]}

Feng, Yong ^{[1
]}

Bian, Rong ^{[1
]}

机构：

[1] Nanjing Inst Technol, Nanjing 211167, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Nanjing 211106, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Ceramic tool; Variable cross-section; Chip breaker; Simulation experiment; CHIP-BREAKING; DENSIFICATION BEHAVIOR; SILICON-NITRIDE; PERFORMANCE; MECHANISMS;

D O I：

10.1016/j.ceramint.2022.10.237

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Through theoretical analysis and finite element simulation experiments, this paper proposes an optimal design method for the structural parameters of ceramic tools with variable cross-sections. On this basis, the tool angles of Si3N4-based ceramic tools for cutting inconel 718 high-temperature alloy are investigated, including rake angle gamma 0 = - 5 degrees, clearance angle alpha 0 = 5 degrees, cutting edge inclination lambda s = - 2 degrees, cutting edge angle Kr = 45 degrees. By comparing the main cutting force, temperature and chip-breaking effect of flat face and three different groove ceramic tools, it is found that straight chip breaker has the most obvious optimization effect, main cutting force is 14.5% lower than that of the flat face, the temperature is reduced by 10.2%, and radius of chip curl curvature is the smallest, which is easy to break chips.

引用

页码：6238 / 6245

页数：8

共 21 条

[1] Sintering mechanisms of Al2O3-based composite ceramic tools having 25% Si3N4 additions [J].