A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SINTERING MOLD, AND METHOD FOR MANUFACTURING THE SAME
SOLUTION: This invention relates to a sintering mold having a relative density corresponding to 95% or more of theoretical density, wherein the sintering mold is obtained by: using a material comprising 25-80 wt.% of graphite powder and 20-75 wt.% of titanium diboride powder; and sintering the material at sintering temperature of 1,700-2,100°C, at pressure of 20-100 MPa, and under vacuum or inert gas atmosphere.EFFECT: This invention relates to a sintering mold, comprising a graphite titanium diboride sintered body, and obtained by sintering a mixed powder of a graphite powder and titanium diboride powder using a discharge plasma sintering method. Manufacturing the sintering mold using the discharge plasma sintering method allows for short-time sintering and cost reduction of the mold. Using the sintering mold at high temperature of about 2,000°C and under high-pressure sintering condition of about 250 MPa as a plasma sintering mold causes little deformation in the sintering mold, thereby: preventing dimensional precision in the whole sintered body from degrading due to the deformation in the sintering mold; and using the sintering mold again for next sintering process.SELECTED DRAWING: Figure 2
【解決手段】黒鉛粉末２５〜８０重量％と二硼化チタン粉末２０〜７５重量％との原料を用い、焼結温度１７００〜２１００℃で圧力２０〜１００ＭＰａで、真空雰囲気又は不活性ガス雰囲気で焼結を行い、相対密度が理論密度の９５％以上である、焼結用金型。【効果】黒鉛粉末と二硼化チタン粉末との混合粉末を、放電プラズマ焼結法を用いて焼結した、黒鉛二硼化チタン焼結体からなる焼結用金型。放電プラズマ焼結法で作製することにより短時間焼結が可能となり、焼結用金型のコスト低減ができ、約２，０００℃程度の高温、約２５０ＭＰａ程度の高圧の焼結条件でのプラズマ焼結用金型として使用ししても、焼結用金型の変形が極めて少なく、焼結用金型の変形による焼結体の寸法精度の低下を防げ、他の焼結に再利用ができる。【選択図】図２
SINTERING MOLD, AND METHOD FOR MANUFACTURING THE SAME
SOLUTION: This invention relates to a sintering mold having a relative density corresponding to 95% or more of theoretical density, wherein the sintering mold is obtained by: using a material comprising 25-80 wt.% of graphite powder and 20-75 wt.% of titanium diboride powder; and sintering the material at sintering temperature of 1,700-2,100°C, at pressure of 20-100 MPa, and under vacuum or inert gas atmosphere.EFFECT: This invention relates to a sintering mold, comprising a graphite titanium diboride sintered body, and obtained by sintering a mixed powder of a graphite powder and titanium diboride powder using a discharge plasma sintering method. Manufacturing the sintering mold using the discharge plasma sintering method allows for short-time sintering and cost reduction of the mold. Using the sintering mold at high temperature of about 2,000°C and under high-pressure sintering condition of about 250 MPa as a plasma sintering mold causes little deformation in the sintering mold, thereby: preventing dimensional precision in the whole sintered body from degrading due to the deformation in the sintering mold; and using the sintering mold again for next sintering process.SELECTED DRAWING: Figure 2
【解決手段】黒鉛粉末２５〜８０重量％と二硼化チタン粉末２０〜７５重量％との原料を用い、焼結温度１７００〜２１００℃で圧力２０〜１００ＭＰａで、真空雰囲気又は不活性ガス雰囲気で焼結を行い、相対密度が理論密度の９５％以上である、焼結用金型。【効果】黒鉛粉末と二硼化チタン粉末との混合粉末を、放電プラズマ焼結法を用いて焼結した、黒鉛二硼化チタン焼結体からなる焼結用金型。放電プラズマ焼結法で作製することにより短時間焼結が可能となり、焼結用金型のコスト低減ができ、約２，０００℃程度の高温、約２５０ＭＰａ程度の高圧の焼結条件でのプラズマ焼結用金型として使用ししても、焼結用金型の変形が極めて少なく、焼結用金型の変形による焼結体の寸法精度の低下を防げ、他の焼結に再利用ができる。【選択図】図２
SINTERING MOLD, AND METHOD FOR MANUFACTURING THE SAME
焼結用金型及びその作製方法
JABRI KHALED (author) / SATO TOMOHIRO (author) / TAKEI SHINICHI (author) / KOIDE MANABU (author)
2019-02-07
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
METHOD FOR MANUFACTURING CYLINDRICAL TARGET AND POWDER SINTERING MOLD USED THEREFOR
| European Patent Office | 2016