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METHOD FOR MANUFACTURING SINTERED PRODUCT FROM THREE-DIMENSIONAL MOLDED ARTICLE
To provide a method for manufacturing a sintered product from a three-dimensional molded article, suppressing formation of defects such as breakage or strain.SOLUTION: A method for manufacturing a sintered product from a three-dimensional molded article is assembled with a preparation step S11, degreasing step S12, and a sintering step S13. In the preparation step S11, an ink involving an inorganic particle and an organic material is laminated to prepare a three-dimensional molded article. The degreasing step S12 includes a first degreasing step of degreasing the organic material by heating the three-dimensional molded article at a first average degreasing temperature under an inert gaseous atmosphere for a first prescribed time, and a second degreasing step of degreasing the organic material by heating the three-dimensional molded article after degreasing in the first degreasing step at a second average degreasing temperature which is higher than the first average degreasing temperature under an inert gaseous atmosphere for a second prescribed time. In the sintering step S13, the three-dimensional molded article after degreasing in the second degreasing step is sintered at an average sintering temperature which is higher than the second average degreasing temperature to obtain a sintered product.SELECTED DRAWING: Figure 1
【課題】割れや歪みなどの欠損の発生を抑制する、三次元造形物から焼結製品を製造する方法を提供する。【解決手段】三次元造形物から焼結製品を製造する方法は、準備工程Ｓ１１と、脱脂工程Ｓ１２と、焼結工程Ｓ１３とを備える。準備工程Ｓ１１では、無機粒子と有機材料とを含有するインクを積層して三次元造形物を準備する。脱脂工程Ｓ１２は、三次元造形物を不活性気体雰囲気下において第１の平均脱脂温度で第１の所定時間にわたり加熱して有機材料を脱脂する第１の脱脂工程と、第１の脱脂工程で脱脂後の三次元造形物を不活性気体雰囲気下において第１の平均脱脂温度より高い第２の平均脱脂温度で第２の所定時間にわたり加熱して有機材料を脱脂する第２の脱脂工程とを含む。焼結工程Ｓ１３では、第２の脱脂工程で脱脂後の三次元造形物を第２の平均脱脂温度より高い平均焼結温度で焼結して焼結製品を得る。【選択図】図１
METHOD FOR MANUFACTURING SINTERED PRODUCT FROM THREE-DIMENSIONAL MOLDED ARTICLE
To provide a method for manufacturing a sintered product from a three-dimensional molded article, suppressing formation of defects such as breakage or strain.SOLUTION: A method for manufacturing a sintered product from a three-dimensional molded article is assembled with a preparation step S11, degreasing step S12, and a sintering step S13. In the preparation step S11, an ink involving an inorganic particle and an organic material is laminated to prepare a three-dimensional molded article. The degreasing step S12 includes a first degreasing step of degreasing the organic material by heating the three-dimensional molded article at a first average degreasing temperature under an inert gaseous atmosphere for a first prescribed time, and a second degreasing step of degreasing the organic material by heating the three-dimensional molded article after degreasing in the first degreasing step at a second average degreasing temperature which is higher than the first average degreasing temperature under an inert gaseous atmosphere for a second prescribed time. In the sintering step S13, the three-dimensional molded article after degreasing in the second degreasing step is sintered at an average sintering temperature which is higher than the second average degreasing temperature to obtain a sintered product.SELECTED DRAWING: Figure 1
【課題】割れや歪みなどの欠損の発生を抑制する、三次元造形物から焼結製品を製造する方法を提供する。【解決手段】三次元造形物から焼結製品を製造する方法は、準備工程Ｓ１１と、脱脂工程Ｓ１２と、焼結工程Ｓ１３とを備える。準備工程Ｓ１１では、無機粒子と有機材料とを含有するインクを積層して三次元造形物を準備する。脱脂工程Ｓ１２は、三次元造形物を不活性気体雰囲気下において第１の平均脱脂温度で第１の所定時間にわたり加熱して有機材料を脱脂する第１の脱脂工程と、第１の脱脂工程で脱脂後の三次元造形物を不活性気体雰囲気下において第１の平均脱脂温度より高い第２の平均脱脂温度で第２の所定時間にわたり加熱して有機材料を脱脂する第２の脱脂工程とを含む。焼結工程Ｓ１３では、第２の脱脂工程で脱脂後の三次元造形物を第２の平均脱脂温度より高い平均焼結温度で焼結して焼結製品を得る。【選択図】図１
METHOD FOR MANUFACTURING SINTERED PRODUCT FROM THREE-DIMENSIONAL MOLDED ARTICLE
三次元造形物から焼結製品を製造する方法
TATEISHI KENJI (author) / OBATA SEIZO (author) / KOBAYASHI YUKIKO (author) / OBARA KAZUKI (author)
2021-10-14
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
B22F
Verarbeiten von Metallpulver
,
WORKING METALLIC POWDER
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
| European Patent Office | 2023
| European Patent Office | 2021