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Graphite tank for sintering silicon carbide ceramic tube, high-performance silicon carbide ceramic tube and preparation method of high-performance silicon carbide ceramic tube
The invention relates to a graphite tank for sintering a silicon carbide ceramic tube, a high-performance silicon carbide ceramic tube and a preparation method of the high-performance silicon carbideceramic tube. The graphite tank is a V-shaped graphite tank with an arc vertex angle, the diameter of the arc part of the arc vertex angle is equal to the sum of the outer diameter of the required silicon carbide ceramic tube and (0.1-0.3) mm, the angle alpha of the V-shaped graphite tank is equal to 2*arcsin (m/M)-x, wherein x is larger than or equal to 0 and smaller than or equal to 2, m is themaximum mass per unit length of the corresponding silicon carbide ceramic tube biscuit when the outer diameter roundness of the silicon carbide ceramic tube obtained after degreasing and sintering ofthe silicon carbide ceramic tube biscuit on a planar graphite plate can be kept at +/-0.1 mm, M is the mass per unit length of the to-be-degreased and to-be-sintered silicon carbide ceramic tube biscuit, and M is larger than m and smaller than or equal to 8.0 g/cm. According to the graphite tank, the silicon carbide ceramic tube is attached to the arc vertex angle to the maximum extent when the sintering shrinkage process is finished, and the straightness, the roundness and the strength of the ceramic tube are improved.
本发明涉及碳化硅陶瓷管烧结用石墨槽、高性能碳化硅陶瓷管及其制备方法，所述石墨槽为具有圆弧顶角的V型石墨槽，其中：所述圆弧顶角的圆弧部分的直径=所需碳化硅陶瓷管的外径+（0.1～0.3）mm，V型石墨槽的角度α=2×arcsin（m/M）‑x，其中0≤x≤2，其中m为将碳化硅陶瓷管素坯放在平面石墨板上进行脱脂和烧结后所得碳化硅陶瓷管的外径圆度能保持在±0.1mm时对应的碳化硅陶瓷管素坯的最大单位长度质量；M为待脱脂和烧结的碳化硅陶瓷管素坯的单位长度质量，m＜M≤8.0g/cm。该石墨槽可使得碳化硅陶瓷管在烧结收缩过程结束时是最大程度贴合该圆弧顶角之中，实现了陶瓷管材的直线度、圆度和强度的提升。
Graphite tank for sintering silicon carbide ceramic tube, high-performance silicon carbide ceramic tube and preparation method of high-performance silicon carbide ceramic tube
The invention relates to a graphite tank for sintering a silicon carbide ceramic tube, a high-performance silicon carbide ceramic tube and a preparation method of the high-performance silicon carbideceramic tube. The graphite tank is a V-shaped graphite tank with an arc vertex angle, the diameter of the arc part of the arc vertex angle is equal to the sum of the outer diameter of the required silicon carbide ceramic tube and (0.1-0.3) mm, the angle alpha of the V-shaped graphite tank is equal to 2*arcsin (m/M)-x, wherein x is larger than or equal to 0 and smaller than or equal to 2, m is themaximum mass per unit length of the corresponding silicon carbide ceramic tube biscuit when the outer diameter roundness of the silicon carbide ceramic tube obtained after degreasing and sintering ofthe silicon carbide ceramic tube biscuit on a planar graphite plate can be kept at +/-0.1 mm, M is the mass per unit length of the to-be-degreased and to-be-sintered silicon carbide ceramic tube biscuit, and M is larger than m and smaller than or equal to 8.0 g/cm. According to the graphite tank, the silicon carbide ceramic tube is attached to the arc vertex angle to the maximum extent when the sintering shrinkage process is finished, and the straightness, the roundness and the strength of the ceramic tube are improved.
本发明涉及碳化硅陶瓷管烧结用石墨槽、高性能碳化硅陶瓷管及其制备方法，所述石墨槽为具有圆弧顶角的V型石墨槽，其中：所述圆弧顶角的圆弧部分的直径=所需碳化硅陶瓷管的外径+（0.1～0.3）mm，V型石墨槽的角度α=2×arcsin（m/M）‑x，其中0≤x≤2，其中m为将碳化硅陶瓷管素坯放在平面石墨板上进行脱脂和烧结后所得碳化硅陶瓷管的外径圆度能保持在±0.1mm时对应的碳化硅陶瓷管素坯的最大单位长度质量；M为待脱脂和烧结的碳化硅陶瓷管素坯的单位长度质量，m＜M≤8.0g/cm。该石墨槽可使得碳化硅陶瓷管在烧结收缩过程结束时是最大程度贴合该圆弧顶角之中，实现了陶瓷管材的直线度、圆度和强度的提升。
Graphite tank for sintering silicon carbide ceramic tube, high-performance silicon carbide ceramic tube and preparation method of high-performance silicon carbide ceramic tube
碳化硅陶瓷管烧结用石墨槽、高性能碳化硅陶瓷管及其制备方法
HUANG ZHENGREN (author) / ZHANG YUQIANG (author) / LIU XUEJIAN (author) / CHEN ZHONGMING (author) / YANG JINJING (author) / PEI BINGBING (author) / YAO XIUMIN (author)
2021-01-05
Patent
Electronic Resource
Chinese
IPC:
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
/
C04B
Kalk
,
LIME
| European Patent Office | 2023
| European Patent Office | 2023
| European Patent Office | 2015
| European Patent Office | 2015