| CPC B22F 7/06 (2013.01) [B22F 3/225 (2013.01); B22F 7/062 (2013.01); B22F 10/10 (2021.01); B22F 10/18 (2021.01); B22F 10/38 (2021.01); B22F 10/64 (2021.01); B22F 12/52 (2021.01); B33Y 10/00 (2014.12); B33Y 40/00 (2014.12)] | 8 Claims |
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1. A production method for producing a product by joining a first part containing an inorganic powder and a binder to a second part containing an inorganic powder and a binder, comprising:
a first step of forming the first part by a three-dimensional shaping apparatus;
a second step of forming the second part;
a third step of assembling the first part and the second part, thereby obtaining an assembly;
a fourth step of heating the assembly at a first temperature; and
a fifth step of heating the assembly at a second temperature higher than the first temperature after the fourth step, wherein
the first part has a first region that comes in contact with the second part and a second region that does not come in contact with the second part,
a melting point of the binder contained in the first region is lower than a melting point of the binder contained in the second region, and
the fourth step comprises heating the assembly to the first temperature to melt the binder in the first region, without melting the binder in the second region, to suppress formation of a gap between the first part and the second part before the fifth step of heating the assembly at the second temperature, and subsequently heating the assembly to a third temperature higher than the first temperature and lower than the second temperature to remove the binder in the first part and the binder in the second part.
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