Abstract
Selected issues related to SEM-imaging and image analysis of spherical melted chips formed during the grinding process are presented and discussed. The general characteristics of this specific group of machining products are given. Chip formation phenomena, as well as their overall morphology, are presented using selected examples of near- and semispherical melted chips occurring singly or concentrated in clusters on the grinding wheel surface after the machining process. Observation of the spherical melted chips and acquisition of their images were carried out for grinding wheel active surfaces with microcrystalline sintered corundum abrasive grains SG™after the internal cylindrical grinding process of a 100Cr6 steel and Titanium Grade 2® alloy by use of a scanning electron microscope, JEOL JSM-5500LV. Analysis of the obtained SEM micrographs was carried out by Image-Pro® Plus 5.0 software to determine the selected geometrical parameters describing the morphological features of the assessed chips.
Highlights
Chip morphology has been, for many years, the key factor characterizing machining processes
The wide range of activities related to the location and observation of those areas of the grinding wheel active surface (GWAS), which were interesting due to the possibilities of carrying out a morphological analysis of spherical melted chips, was performed by the use of a scanning electron microscope JSM-5500LV produced by JEOL
Microscopic observation of the GWAS 1–35 × 20 × 10SG/F46K7VTO after internal cylindrical grinding discloses a number of specific products of machining processes in the form of random-kind chips
Summary
For many years, the key factor characterizing machining processes. Analysis of chip form and geometry has given researchers information about chip formation, which is one of the basic phenomena in grinding, often used for characterization of the process conditions and obtained results. Wong and Doyle [11] drew attention to the form of chips throughout a sample issue of the impact of a fragmented zone on the rise of metal removal in the form of thin delaminated wear platelets The authors demonstrated this effect by observing the forms of chips generated in the examined process, stating that thin delaminated wear platelets are evident when grinding in an Advances in Materials Science and Engineering. A similar analysis for the above-mentioned chips after the grinding processes, based on SEM-imaging and analysis, was carried out in order to better understand chip formation phenomena when grinding wheels with sol-gel abrasive grains are used
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