New carbon based coatings have been developed for cutting of light metals such as aluminum. These coatings can be used either directly on the tool or as topcoating combined with another hard base coating. Cutting test...New carbon based coatings have been developed for cutting of light metals such as aluminum. These coatings can be used either directly on the tool or as topcoating combined with another hard base coating. Cutting tests show that the coating gives good performance for materials that tend to stick to the cutting tools, such as aluminium alloys, because of the substantial reduction of appearance of the so-called built-up edge (BUE). This results in a longer life time of the tool and smoother surface finish of the cut made in the work-piece material. Especially in dry machining and deep hole drilling this coating performed very well. An overview of the properties and initial cutting results of this coating will be presented. This paper will also present results from recent industrial field tests carried out by a leading European aerospace manufacturer. Cutting forces, BUE formation and surface roughness data will be presented to explain the cutting process during dry machining.展开更多
Several orthogonal cutting experiments were carried out on SiC reinforced aluminium composites. In the cutting process, photos of the chip bottom specimen SEM were gotten with the aid of ‘quick stop tool device’. Ac...Several orthogonal cutting experiments were carried out on SiC reinforced aluminium composites. In the cutting process, photos of the chip bottom specimen SEM were gotten with the aid of ‘quick stop tool device’. According to the photos, the build up edge (BUE) can be produced in circumferential cutting experiments. In comparison with carbon steel BUE, aluminium composites BUE is like a wedge in shape, and its development mechanism is mechanical enchasing other than "cold welding". In addition to the above mentioned conclusions, the minishing BUE height H b is also analyzed.展开更多
基金the financial support from the European Commission.(GRD1-2001-40514/G5RD-CT2002-00672)
文摘New carbon based coatings have been developed for cutting of light metals such as aluminum. These coatings can be used either directly on the tool or as topcoating combined with another hard base coating. Cutting tests show that the coating gives good performance for materials that tend to stick to the cutting tools, such as aluminium alloys, because of the substantial reduction of appearance of the so-called built-up edge (BUE). This results in a longer life time of the tool and smoother surface finish of the cut made in the work-piece material. Especially in dry machining and deep hole drilling this coating performed very well. An overview of the properties and initial cutting results of this coating will be presented. This paper will also present results from recent industrial field tests carried out by a leading European aerospace manufacturer. Cutting forces, BUE formation and surface roughness data will be presented to explain the cutting process during dry machining.
文摘Several orthogonal cutting experiments were carried out on SiC reinforced aluminium composites. In the cutting process, photos of the chip bottom specimen SEM were gotten with the aid of ‘quick stop tool device’. According to the photos, the build up edge (BUE) can be produced in circumferential cutting experiments. In comparison with carbon steel BUE, aluminium composites BUE is like a wedge in shape, and its development mechanism is mechanical enchasing other than "cold welding". In addition to the above mentioned conclusions, the minishing BUE height H b is also analyzed.
