Study on 3D Cold Printing of W-Ni-Fe Alloy Parts AITranslate
Abstract AITranslate
The 90W-Ni-Fe alloy parts were fabricated by 3D cold printing using military-grade tungsten powder,nickel powder and iron power as the raw materials.The effects of binder and solid contents on the viscosity of metal slurry were studied,and the microstructure uniformity of the green body was also investigated. The debinding and sintering process was optimized according to TG-DTA curves,and the morphology, metallographic microstructure and density of the sintered body were analyzed.The results show that the W-Ni-Fe metal slurry with 4% binder and 70%~75% solid is the most suitable for 3D cold printing. The microstructure of the green body is uniform in the vertical direction,the metal particles are uniformly filled in the three-dimensional network structure composed of PVB,and solid particles are uniformly distributed without obvious settlement.In the printing process,the thickness of the green body nonlinearly grows,the width is unstable,and therefore the curing rate of the slurry still needs to be improved.After the green body was degreased and sintered at 1440℃ for 2h,the sintered body with 16.26g/cm^3 density is obtained,and its relative density is as high as 94.83%.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.411[金属学及工艺—金属材料]
Citation Information:
The 90W-Ni-Fe alloy parts were fabricated by 3D cold printing using military-grade tungsten powder,nickel powder and iron power as the raw materials.The effects of binder and solid contents on the viscosity of metal slurry were studied,and the microstructure uniformity of the green body was also investigated. The debinding and sintering process was optimized according to TG-DTA curves,and the morphology, metallographic microstructure and density of the sintered body were analyzed.The results show that the W-Ni-Fe metal slurry with 4% binder and 70%~75% solid is the most suitable for 3D cold printing. The microstructure of the green body is uniform in the vertical direction,the metal particles are uniformly filled in the three-dimensional network structure composed of PVB,and solid particles are uniformly distributed without obvious settlement.In the printing process,the thickness of the green body nonlinearly grows,the width is unstable,and therefore the curing rate of the slurry still needs to be improved.After the green body was degreased and sintered at 1440℃ for 2h,the sintered body with 16.26g/cm^3 density is obtained,and its relative density is as high as 94.83%.
quote
| GB/T 7714-2015 | [1] WU Ke, XIE Hai-lin, LI Bang-yi, et al. Study on 3D Cold Printing of W-Ni-Fe Alloy Parts[J]. Rare Metals and Cemented Carbides, 2018(6): 37-41. |
| MLA | [1] WU Ke, et al., "Study on 3D Cold Printing of W-Ni-Fe Alloy Parts." Rare Metals and Cemented Carbides, no. 6, 2018, pp. 37-41. |
| APA | [1] WU Ke, XIE Hai-lin, LI Bang-yi, ZHANG Jing, FENG Jian, WU Fang, & ZHU Yu-bin. (2018). Study on 3D Cold Printing of W-Ni-Fe Alloy Parts. Rare Metals and Cemented Carbides(6), 37-41. |
| IEEE | [1] WU Ke, XIE Hai-lin, LI Bang-yi, ZHANG Jing, FENG Jian, WU Fang, and ZHU Yu-bin, "Study on 3D Cold Printing of W-Ni-Fe Alloy Parts," Rare Metals and Cemented Carbides, no. 6, pp. 37-41, 2018. keywords: {W-Ni-Fe alloy part;3D cold printing;W-Ni-Fe slurry;viscosity;green body;sintered body;relative density} |