Experimental investigation on diamond wire sawing of Si3N4 ceramics considering the evolution of wire cutting performance. Issue 12 (15th June 2022)

• Record Type: Journal Article
• Authors: Liu, Yihe; Zhu, Zhenfeng
• Is Part Of: Ceramics international. Volume 48:Issue 12(2022)
• Page Start: 17335
• Page End: 17342
• Publication Date: 2022-06-15
• Subjects: Si3N4 ceramics -- Diamond wire saw -- As-sawn slices -- Surface roughness -- Surface topography; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.02.296
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: When diamond wire saw is used in machining silicon nitride ceramics (Si3 N4 ceramics), the ultra-hardness of Si3 N4 causes the saw wire to wear out, which leads to the saw wire cutting performance constantly changing during its life cycle, and thus the machined quality of Si3 N4 ceramics is affected. Surface roughness and topography are important indicators of the quality of the machined surface. In this paper, the diamond wire saw cutting experiment of Si3 N4 ceramics was carried out, the effect of the evolution of saw wire cutting performance on the surface roughness and topography of Si3 N4 ceramics as-sawn slices was investigated based on the analysis of the changes of saw wire wear topography, breaking force, bow angle and kerf loss during the sawing process. The results show that the surface roughness along the saw wire motion direction and the workpiece feed direction tends to decrease and then increase with the evolution of the cutting performance of the saw wire, which accords well with the trend of the as-sawn slices surface morphology. The results of the study can provide experimental reference for the development of high precision diamond wire saw cutting technology for Si3 N4 ceramics.