Showing papers on "Built up edge published in 1976"
TL;DR: In this paper, the secondary zone stress distribution when machining a commercial purity aluminium at speeds near the transition from steady-state to b.u. formation was investigated and it was found that there is a substantial drop in stress from the rake face into the chip, in contrast to the steady state speeds which give an almost constant stress in a direction normal to the tool rake face.
21 citations
6 citations
TL;DR: In this article, a three dimensional observation of a built-up-edge in Al-Si and Fe-C alloys was performed by using the scanning electron microscope (SEM) and X-ray diffraction apparatus.
Abstract: This paper describes some considerations at the three dimensional observation of a built-up-edge in Al-Si and Fe-C alloys. This study mainly makes clear up the effects of the secondary phase grains (Si and Fe3C), the diameter of the crystal grains and other alloy grains (Al2Cu, Mg2Si and A13Ni, etc.) on the external appearance and internal structure of the built-up-edge. For that purpose, the built-up-edge is sufficiently investigated by use of the scanning electron microscope (SEM) and X-ray diffraction apparatus. Main results obtained are as follows.(1) The built-up-edge is formed by the cohesion of, the unit elements of the arborization shape.(2) The fallen fragments into the back face of a chip and machined surface do not lie over the cutting width as if trump cards were pushed and downed, but split from the arborization unit of the built-up-edge at random to the chip and machined surface. And the split occurs near the tip of the built-up-edge.(3) The secondary phase grains (Si, Fe3C) and other alloy grains (Al2Cu, Al3Ni and Mg2Si) are crushed finely in the external surface as well as the internal structre of the built-up-edge.
2 citations
TL;DR: The built-up edge formation in cutting, and the groove wear of the tool, are factors responsible for variation of surface roughness from the ideal value as mentioned in this paper, and the significance of these two factors have been studied statistically using multiple correlation technique.
Abstract: The built-up edge formation in cutting, and the groove wear of the tool, are factors responsible for variation of surface roughness from the ideal value. The significance of these two factors have been studied statistically using multiple correlation technique. The built-up edge, when it is present, is found to affect surface roughness to a greater extent than groove wear.
1 citations