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Manufacturing method of large-size ZnS transparent ceramic
The invention discloses a manufacturing method of large-size ZnS transparent ceramic, which is characterized in that an upper pressure head can effectively improve the pressure transfer effect among raw material powder in the hot pressing process, so that a product with uniform and consistent optical performance is obtained; and the pressure of the metal mold is reduced after demolding under a high-temperature condition by utilizing a thermal demolding technology in a hot pressing sintering process, so that the thermal stress of the ZnS transparent ceramic is released in a cooling process, and the cracking of the large-size ZnS transparent ceramic caused by the shrinkage of the metal mold and the thermal stress of the ZnS transparent ceramic is avoided.
本发明公开了一种大尺寸ZnS透明陶瓷的制造方法，本发明的上压头能够在热压过程中有效提高原料粉体间的压力传递效应，从而获得光学性能均匀一致的产品；再利用热压烧结过程中的热脱模技术，在高温条件下脱模后减除金属模具压力，使ZnS透明陶瓷在降温过程中热应力得以释放，避免大尺寸ZnS透明陶瓷由于金属模具收缩和自身热应力导致的开裂。
Manufacturing method of large-size ZnS transparent ceramic
The invention discloses a manufacturing method of large-size ZnS transparent ceramic, which is characterized in that an upper pressure head can effectively improve the pressure transfer effect among raw material powder in the hot pressing process, so that a product with uniform and consistent optical performance is obtained; and the pressure of the metal mold is reduced after demolding under a high-temperature condition by utilizing a thermal demolding technology in a hot pressing sintering process, so that the thermal stress of the ZnS transparent ceramic is released in a cooling process, and the cracking of the large-size ZnS transparent ceramic caused by the shrinkage of the metal mold and the thermal stress of the ZnS transparent ceramic is avoided.
本发明公开了一种大尺寸ZnS透明陶瓷的制造方法，本发明的上压头能够在热压过程中有效提高原料粉体间的压力传递效应，从而获得光学性能均匀一致的产品；再利用热压烧结过程中的热脱模技术，在高温条件下脱模后减除金属模具压力，使ZnS透明陶瓷在降温过程中热应力得以释放，避免大尺寸ZnS透明陶瓷由于金属模具收缩和自身热应力导致的开裂。
Manufacturing method of large-size ZnS transparent ceramic
一种大尺寸ZnS透明陶瓷的制造方法
YUAN QIANG (author) / WANG GANG (author) / LIU XUEBING (author)
2024-06-11
Patent
Electronic Resource
Chinese
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