Mechanical Properties of Some Metallic Powder Alloys and Their Contribution to the Performance of Diamond Tools Used for Cutting Granite
| Autor: | Pedro Amaral, Carlos A. Anjinho, Jorge Cruz Fernandes, Luís Guerra Rosa |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Toughness
Fabrication Materials science Modulus chemistry.chemical_element 02 engineering and technology mechanical properties engineering.material 01 natural sciences diamond impregnated tools Flexural strength 0103 physical sciences General Materials Science Tool wear stone machining 010302 applied physics Metallurgy Metals and Alloys Diamond cutting performance 021001 nanoscience & nanotechnology hot pressed sintering tool wear pre-alloyed agglomerates chemistry cobalt-based alloy Vickers hardness test engineering 0210 nano-technology Cobalt |
| Zdroj: | Metals Volume 9 Issue 11 |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met9111219 |
| Popis: | This work examined some pre-alloyed cobalt-, iron-, and copper-based powder binder systems&mdash such as those launched commercially under the brand names of Cobalite and Next&mdash in terms of their as-sintered physical-mechanical properties, namely, apparent density, Young´ s modulus, yield strength, rupture strength, rupture strain, toughness modulus, and Vickers hardness. These types of sintered products are traditionally used in the fabrication of diamond impregnated tools for cutting granite stones. The following powder binder systems were evaluated: Cobalite HDR pre-alloyed powder, Next 300 pre-alloyed powder, and four other mixtures of these with Cu and Fe powders: Cobalite HDR + 20 wt% Cu Cobalite HDR + 20 wt% Fe Next 300 + 20 wt% Cu Next 300 + 20 wt% Fe. The evaluation methodology aimed to establish criteria for developing new diamond tools and, therefore, it included the measurement of several technological parameters directly related to the cutting performance of the tools (e.g., energy consumption measurements made exclusively in the tool drive motor, forces generated in the tool, tool consumption per unit weight of stone removed by the cutting). The results show the adequacy of the methodology for the optimisation of diamond retention capacity of these types of metal matrices and for improving the working performance of the diamond tools. |
| Databáze: | OpenAIRE |
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