Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts
Low-pressure powder injection molding (LPIM) is a cost-effective technology for producing intricate small metal parts at high, medium, and low production volumes in applications which, to date, have involved ceramics or spherical metal powders. Since the use of irregular metal powders represents a p...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/2/264 |
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| author | Atefeh A. Tafti Vincent Demers Seyed Mohammad Majdi Guillem Vachon Vladimir Brailovski |
| author_facet | Atefeh A. Tafti Vincent Demers Seyed Mohammad Majdi Guillem Vachon Vladimir Brailovski |
| author_sort | Atefeh A. Tafti |
| collection | DOAJ |
| description | Low-pressure powder injection molding (LPIM) is a cost-effective technology for producing intricate small metal parts at high, medium, and low production volumes in applications which, to date, have involved ceramics or spherical metal powders. Since the use of irregular metal powders represents a promising way to reduce overall production costs, this study aims to investigate the potential of manufacturing powder injection molded parts from irregular commercial iron powders using the LPIM approach. To this end, a low viscosity feedstock was injected into a rectangular mold cavity, thermally wick-debound using three different pre-sintering temperatures, and finally sintered using an identical sintering cycle. During debinding, an increase in pre-sintering temperature from 600 to 850 °C decreased the number of fine particles. This decreased the sintered density from 6.2 to 5.1 g/cm<sup>3</sup>, increased the average pore size from 9 to 14 μm, and decreased pore circularity from 67 to 59%. |
| first_indexed | 2024-03-09T05:45:14Z |
| format | Article |
| id | doaj.art-975b9cc200d64230922525f1c04ee1da |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T05:45:14Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-975b9cc200d64230922525f1c04ee1da2023-12-03T12:21:51ZengMDPI AGMetals2075-47012021-02-0111226410.3390/met11020264Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron PartsAtefeh A. Tafti0Vincent Demers1Seyed Mohammad Majdi2Guillem Vachon3Vladimir Brailovski4Department of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame West, Montréal, QC H3C 1K3, CanadaDepartment of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame West, Montréal, QC H3C 1K3, CanadaDepartment of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame West, Montréal, QC H3C 1K3, CanadaResearch and Development, Rio Tinto Metal Powders, 1625 Route Marie-Victorin, Sorel-Tracy, QC J3R 4R4, CanadaDepartment of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame West, Montréal, QC H3C 1K3, CanadaLow-pressure powder injection molding (LPIM) is a cost-effective technology for producing intricate small metal parts at high, medium, and low production volumes in applications which, to date, have involved ceramics or spherical metal powders. Since the use of irregular metal powders represents a promising way to reduce overall production costs, this study aims to investigate the potential of manufacturing powder injection molded parts from irregular commercial iron powders using the LPIM approach. To this end, a low viscosity feedstock was injected into a rectangular mold cavity, thermally wick-debound using three different pre-sintering temperatures, and finally sintered using an identical sintering cycle. During debinding, an increase in pre-sintering temperature from 600 to 850 °C decreased the number of fine particles. This decreased the sintered density from 6.2 to 5.1 g/cm<sup>3</sup>, increased the average pore size from 9 to 14 μm, and decreased pore circularity from 67 to 59%.https://www.mdpi.com/2075-4701/11/2/264low-pressure powder injection molding (LPIM)debindingpre-sintering temperaturesinteringiron powderirregular particles |
| spellingShingle | Atefeh A. Tafti Vincent Demers Seyed Mohammad Majdi Guillem Vachon Vladimir Brailovski Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts Metals low-pressure powder injection molding (LPIM) debinding pre-sintering temperature sintering iron powder irregular particles |
| title | Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts |
| title_full | Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts |
| title_fullStr | Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts |
| title_full_unstemmed | Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts |
| title_short | Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts |
| title_sort | effect of thermal debinding conditions on the sintered density of low pressure powder injection molded iron parts |
| topic | low-pressure powder injection molding (LPIM) debinding pre-sintering temperature sintering iron powder irregular particles |
| url | https://www.mdpi.com/2075-4701/11/2/264 |
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