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A platform for research: civil engineering, architecture and urbanism
To perform a debindering step and a sintering step within a short period of time, and to form a powder-sintered molded body having high precision, in which cracking, splitting and the like hardly occur.SOLUTION: A molding material 13 for sintering comprises a sinterable sintering powder 11 and organic binders 12. The molding material for sintering is used in a method for producing a powder-sintered molded body 14 including: degreasing a sintered material-molded body 10 molded from the molding material for sintering in a predetermined shape, by the action of a superheated steam 6; and performing sintering treatment at predetermined temperature. The molding material for sintering comprises: a first binder component having a disappearing-starting temperature at which the first binder component starts disappearing at predetermined temperature and a disappearing-finishing temperature at which the whole binder component can disappear; and a second binder component that starts disappearing at higher temperature than the disappearing-finishing temperature of the first binder.SELECTED DRAWING: Figure 1
【課題】短時間に脱バインダ工程及び焼結工程を行うことができるとともに、クラックや割れ等が生じることが少なく、しかも、精度の高い粉体焼結成形体を形成する。【解決手段】焼結可能な焼結粉体１１と有機バインダ１２とを含む焼結用成形材料１３から所定の形状に成形された焼結材料成形体１０を、過熱水蒸気６を作用させて脱脂し、所定温度で焼結する粉体焼結成形体１４の製造方法に用いられる上記焼結用成形材料であって、所定の温度で消失を開始する消失開始温度と、すべてを消失させることができる消失完了温度とを有する第１のバインダ成分と、上記第１のバインダの上記消失完了温度より高い温度で消失を開始する第２のバインダ成分とを含むんで構成される。【選択図】図１
To perform a debindering step and a sintering step within a short period of time, and to form a powder-sintered molded body having high precision, in which cracking, splitting and the like hardly occur.SOLUTION: A molding material 13 for sintering comprises a sinterable sintering powder 11 and organic binders 12. The molding material for sintering is used in a method for producing a powder-sintered molded body 14 including: degreasing a sintered material-molded body 10 molded from the molding material for sintering in a predetermined shape, by the action of a superheated steam 6; and performing sintering treatment at predetermined temperature. The molding material for sintering comprises: a first binder component having a disappearing-starting temperature at which the first binder component starts disappearing at predetermined temperature and a disappearing-finishing temperature at which the whole binder component can disappear; and a second binder component that starts disappearing at higher temperature than the disappearing-finishing temperature of the first binder.SELECTED DRAWING: Figure 1
【課題】短時間に脱バインダ工程及び焼結工程を行うことができるとともに、クラックや割れ等が生じることが少なく、しかも、精度の高い粉体焼結成形体を形成する。【解決手段】焼結可能な焼結粉体１１と有機バインダ１２とを含む焼結用成形材料１３から所定の形状に成形された焼結材料成形体１０を、過熱水蒸気６を作用させて脱脂し、所定温度で焼結する粉体焼結成形体１４の製造方法に用いられる上記焼結用成形材料であって、所定の温度で消失を開始する消失開始温度と、すべてを消失させることができる消失完了温度とを有する第１のバインダ成分と、上記第１のバインダの上記消失完了温度より高い温度で消失を開始する第２のバインダ成分とを含むんで構成される。【選択図】図１
MOLDING MATERIAL FOR SINTERING
焼結用成形材料
TANAKA SHIGEO (author)
2021-02-25
Patent
Electronic Resource
Japanese
POWDER MOLDING MATERIAL, SINTERING MOLDING AND METHOD FOR PRODUCING SINTERING MOLDING
| European Patent Office | 2021
| European Patent Office | 2015