Abstract: Disclosed is a pre-sintered ceramic block for a dental restoration, which has a low pre-sintering temperature, contains a silica main crystal phase, but does not contain or contains a small amount of lithium metasilicate crystal phase. The pre-sintered ceramic block has a low hardness, with a Vickers hardness of 0.5-3 GPa, which is significantly lower than that of a ceramic block containing a lithium metasilicate crystal phase, and same is suitable for dry machining and also wet machining when being machined into a dental restoration.

Abstract: A pre-sintered porcelain block for dental restoration; the pre-sintered porcelain block does not contain crystal phases and has a Vickers hardness of 0.5-2 GPa. Due to a hardness which is significantly lower than that of the porcelain block containing a lithium metasilicate crystal phase, the pre-sintered porcelain block may be processed by using dry machining and can simultaneously be processed by using wet machining when being mechanically processed into a dental restoration shape.

Abstract: A rapid sintering system and rapid sintering method, the rapid sintering system comprising: a furnace body (110) comprising a hearth (111) and a furnace mouth (112) that communicate with each other; a lifting device (120) arranged below the furnace mouth (112), comprising a support (122) and a sample stage (121), the sample stage (121) being disposed on the support (122); a temperature acquisition device (130), disposed on the sample stage (121); a control device (140), disposed outside of the hearth (111), electrically connected to the lifting device (120) and the temperature acquisition device (130) and used to control lifting of the lifting device (120) according to a temperature acquired by the temperature acquisition device (130) and a preset sintering condition; and a spacer (150), disposed at a first end of the lifting device (120), a first spacing being present between the spacer (150) and the sample stage (121), and the furnace mouth (112) is blocked by the spacer (150) when the rapid sintering syste

Abstract: A pre-sintered porcelain block for dental restoration; the pre-sintered porcelain block does not contain crystal phases and has a Vickers hardness of 0.5-2 GPa. Due to a hardness which is significantly lower than that of the porcelain block containing a lithium metasilicate crystal phase, the pre-sintered porcelain block may be processed by using dry machining and can simultaneously be processed by using wet machining when being mechanically processed into a dental restoration shape.

Abstract: Disclosed is a pre-sintered ceramic block for a dental restoration, which has a low pre-sintering temperature, contains a silica main crystal phase, but does not contain or contains a small amount of lithium metasilicate crystal phase. The pre-sintered ceramic block has a low hardness, with a Vickers hardness of 0.5-3 GPa, which is significantly lower than that of a ceramic block containing a lithium metasilicate crystal phase, and same is suitable for dry machining and also wet machining when being machined into a dental restoration. (FIG.

Abstract: Disclosed is a sintering furnace comprising a furnace body and a lifting device, wherein the furnace body comprises a furnace chamber (10) and a furnace mouth (20), the furnace chamber (10) is connected with the furnace mouth (20), wherein the sintering furnace further comprises a sealing member (30) provided at the lifting device; when the sintering furnace is in a loading or unloading condition, the sealing member (30) blocks the furnace mouth (20). When the sintering furnace is in an unloading condition, the sealing member (30) can block the furnace mouth (20), the furnace chamber (10) does not contact with the outside directly, thus the temperature in the furnace chamber (10) will not drop sharply, and the service life of the sintering furnace will be increased.

Abstract: A rapid sintering system and rapid sintering method, the rapid sintering system comprising: a furnace body (110) comprising a hearth (111) and a furnace mouth (112) that communicate with each other; a lifting device (120) arranged below the furnace mouth (112), comprising a support (122) and a sample stage (121), the sample stage (121) being disposed on the support (122); a temperature acquisition device (130), disposed on the sample stage (121); a control device (140), disposed outside of the hearth (111), electrically connected to the lifting device (120) and the temperature acquisition device (130) and used to control lifting of the lifting device (120) according to a temperature acquired by the temperature acquisition device (130) and a preset sintering condition; and a spacer (150), disposed at a first end of the lifting device (120), a first spacing being present between the spacer (150) and the sample stage (121), and the furnace mouth (112) is blocked by the spacer (150) when the rapid sintering syste

Abstract: Disclosed is a sintering furnace comprising a furnace body and a lifting device, wherein the furnace body comprises a furnace chamber (10) and a furnace mouth (20), the furnace chamber (10) is connected with the furnace mouth (20), wherein the sintering furnace further comprises a sealing member (30) provided at the lifting device; when the sintering furnace is in a loading or unloading condition, the sealing member (30) blocks the furnace mouth (20). When the sintering furnace is in an unloading condition, the sealing member (30) can block the furnace mouth (20), the furnace chamber (10) does not contact with the outside directly, thus the temperature in the furnace chamber (10) will not drop sharply, and the service life of the sintering furnace will be increased.

Abstract: A test bed for electric wheel comprehensive performance is characterized in that the test bed comprises a foundation, a portal frame set on the foundation and including a cross beam and two columns supporting both ends of the cross beam individually, a main pin arm movably connected to the portal frame, and a main rotation shaft revolvably and perpendicularly mounted on the top of the main pin arm, wherein the electric wheel is mounted on the main pin arm and is located inside of the portal frame and right below the main rotation shaft. The test bed further comprises at least one of a road simulation mechanism, an inertia simulation mechanism, a driving power mechanism, a perpendicular loading mechanism, and a steering mechanism which take the simulation test on the electric wheel.

Abstract: A test bed for electric wheel comprehensive performance is characterized in that the test bed comprises a foundation, a portal frame set on the foundation and including a cross beam and two columns supporting both ends of the cross beam individually, a main pin arm movably connected to the portal frame, and a main rotation shaft revolvably and perpendicularly mounted on the top of the main pin arm, wherein the electric wheel is mounted on the main pin arm and is located inside of the portal frame and right below the main rotation shaft. The test bed further comprises at least one of a road simulation mechanism, an inertia simulation mechanism, a driving power mechanism, a perpendicular loading mechanism, and a steering mechanism which take the simulation test on the electric wheel.