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公开(公告)号：US5227105A
公开(公告)日：1993-07-13
申请号：US524264
申请日：1990-07-09
CPC分类号： F27D3/026 , B28B11/243 , B28B21/52 , B28B3/20
摘要： Ceramic tubes are manufactured from a mixture that includes ceramic powder. The mixture is extruded through a die to form a tube. The tube is passed through an open-ended dryer, calciner, transition zone, sintering furnace, and cooler. Thereafter, the tube is cut to the desired length (which may be very long). The quality of the tube is enhanced by applying a vacuum to the mixture prior to extrusion. For tubes made of non-oxide ceramics, an inert atmosphere is maintained both inside and outside the tube in all sections of the equipment that operate above 200.degree. C. A controlled tension is applied to the tube by means of first pinch rolls disposed downstream of the dryer and second pinch rolls disposed downstream of the cooler.
摘要翻译： 陶瓷管由包括陶瓷粉末的混合物制成。 将混合物通过模具挤出以形成管。 管通过开放式干燥器，煅烧炉，过渡区，烧结炉和冷却器。 此后，将管切割成所需长度（可能非常长）。 通过在挤出之前对混合物施加真空来提高管的质量。 对于由非氧化物陶瓷制成的管，在高于200℃的设备的所有部分中，管内部和外部均保持惰性气氛。通过设置在200℃以下的第一夹送辊将受控的张力施加到管 干燥器和设置在冷却器下游的第二夹送辊。
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公开(公告)号：US5057001A
公开(公告)日：1991-10-15
申请号：US322482
申请日：1989-03-10
CPC分类号： B28B11/243 , B28B21/52 , B28B3/20 , F27D3/026
摘要： Apparatus for making ceramic tubes from a mixture that includes ceramic powder. The mixture is extruded through a die to form a tube. The tube is passed through an open-ended dryer, calciner, transition zone, sintering furnace, and cooler. Thereafter, the tube is cut to the desired length (which may be very long). The quality of the tube is enhanced by applying a vacuum to the mixture prior to extrusion. For tubes made of non-oxide ceramics, an inert atmosphere is maintained both inside and outside the tube in all sections of the equipment that operate above 200.degree. C. A controlled tension is applied to the tube by means of first pinch rolls disposed downstream of the dryer and second pinch rolls disposed downstream of the cooler.
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