Recycling of WC-TiC-TaC-NbC-Co by zinc melt method to manufacture new cutting tools
This paper discusses manufacturing of tungsten carbide cutting materials from both fresh powders and recycled ones. As received powder with nominal chemical composition of WC-9% Co-6% TiC-1% TaC-1%NbC was used for preparing cutting tool. Various compaction pressures from 250 to 730 MPa and sintering...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-06-01
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| Series: | Results in Physics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379718334636 |
| _version_ | 1818958223088025600 |
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| author | Ahmed O. Abdel-Mawla Mohamed A. Taha Omayma A. El-Kady Ayman Elasyed |
| author_facet | Ahmed O. Abdel-Mawla Mohamed A. Taha Omayma A. El-Kady Ayman Elasyed |
| author_sort | Ahmed O. Abdel-Mawla |
| collection | DOAJ |
| description | This paper discusses manufacturing of tungsten carbide cutting materials from both fresh powders and recycled ones. As received powder with nominal chemical composition of WC-9% Co-6% TiC-1% TaC-1%NbC was used for preparing cutting tool. Various compaction pressures from 250 to 730 MPa and sintering temperatures from 1350 to 1450 °C were used in the study. The density, hardness and fracture toughness were estimated for all sintered samples. Statistical analysis showed that the most suitable compaction pressure and sintering temperature are 460 MPa and 1400 °C, respectively. The highest relative density and hardness values are 98% and 1710 HV30, respectively for the sample compacted at 730 MPa and sintered at 1450 °C, while the highest value of fracture toughness is 11.657 MPa m1/2 for the sample compacted at 460 MPa and sintered at 1350 °C. The prepared samples were recycled by zinc melt method and the best ratio of zinc to carbide is 1.4:1, which has the highest efficiency of recycled powders (91.55–97.28%). The recycled WC powder was mixed with the fresh one by 10, 20, 30… and 100 wt% and was used to manufacture new samples. Results have shown that 70 wt% recycled powder is the optimal mixing composition. Keywords: Tungsten carbide, Cobalt binder, Recycling of WC, Sintering process, Compaction, Zinc melt technique |
| first_indexed | 2024-12-20T11:22:19Z |
| format | Article |
| id | doaj.art-bdd647ca8cf94343bb8963933c8dea37 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-20T11:22:19Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-bdd647ca8cf94343bb8963933c8dea372022-12-21T19:42:29ZengElsevierResults in Physics2211-37972019-06-0113Recycling of WC-TiC-TaC-NbC-Co by zinc melt method to manufacture new cutting toolsAhmed O. Abdel-Mawla0Mohamed A. Taha1Omayma A. El-Kady2Ayman Elasyed3Powder Technology Division, Central Metallurgical R&D Institute, EgyptDept. Of Design and Production Engineering, Faculty of Engineering, Ain-Shams University, EgyptPowder Technology Division, Central Metallurgical R&D Institute, Egypt; Corresponding author.Powder Technology Division, Central Metallurgical R&D Institute, EgyptThis paper discusses manufacturing of tungsten carbide cutting materials from both fresh powders and recycled ones. As received powder with nominal chemical composition of WC-9% Co-6% TiC-1% TaC-1%NbC was used for preparing cutting tool. Various compaction pressures from 250 to 730 MPa and sintering temperatures from 1350 to 1450 °C were used in the study. The density, hardness and fracture toughness were estimated for all sintered samples. Statistical analysis showed that the most suitable compaction pressure and sintering temperature are 460 MPa and 1400 °C, respectively. The highest relative density and hardness values are 98% and 1710 HV30, respectively for the sample compacted at 730 MPa and sintered at 1450 °C, while the highest value of fracture toughness is 11.657 MPa m1/2 for the sample compacted at 460 MPa and sintered at 1350 °C. The prepared samples were recycled by zinc melt method and the best ratio of zinc to carbide is 1.4:1, which has the highest efficiency of recycled powders (91.55–97.28%). The recycled WC powder was mixed with the fresh one by 10, 20, 30… and 100 wt% and was used to manufacture new samples. Results have shown that 70 wt% recycled powder is the optimal mixing composition. Keywords: Tungsten carbide, Cobalt binder, Recycling of WC, Sintering process, Compaction, Zinc melt techniquehttp://www.sciencedirect.com/science/article/pii/S2211379718334636 |
| spellingShingle | Ahmed O. Abdel-Mawla Mohamed A. Taha Omayma A. El-Kady Ayman Elasyed Recycling of WC-TiC-TaC-NbC-Co by zinc melt method to manufacture new cutting tools Results in Physics |
| title | Recycling of WC-TiC-TaC-NbC-Co by zinc melt method to manufacture new cutting tools |
| title_full | Recycling of WC-TiC-TaC-NbC-Co by zinc melt method to manufacture new cutting tools |
| title_fullStr | Recycling of WC-TiC-TaC-NbC-Co by zinc melt method to manufacture new cutting tools |
| title_full_unstemmed | Recycling of WC-TiC-TaC-NbC-Co by zinc melt method to manufacture new cutting tools |
| title_short | Recycling of WC-TiC-TaC-NbC-Co by zinc melt method to manufacture new cutting tools |
| title_sort | recycling of wc tic tac nbc co by zinc melt method to manufacture new cutting tools |
| url | http://www.sciencedirect.com/science/article/pii/S2211379718334636 |
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