The utility model relates to a furnace for recrystallization of silicon carbide. It is mainly designed to solve the problem that the existing heating body furnace is easy to lead to low qualified rate of products. It consists of graphite heating pipe, furnace body is mounted on bracket, two ends of graphite heating pipe are connected with furnace body and extend out of furnace body, copper electrode is on graphite heating pipe, carbon black insulation layer is arranged between graphite protective sleeve outside graphite heating pipe and furnace body, steel pipe of preheating section is connected at the front end of graphite heating pipe, steel pipe of cooling section is connected at the back end; furnace body of preheating section is arranged outside the steel pipe of preheating section, and steel of preheating section is arranged between graphite protective sleeve sleeve sleeve outside graphite heating pipe and furnace body. The front end of the tube extends from the furnace body of the preheating section, and the steel tube of the preheating section is covered with ceramic tubes. The ceramic tubes are wound with electric heating wires. The electric heating wires extend from the furnace body of the preheating section, and the furnace body of the preheating section is filled with aluminium silicate felt. The furnace body of the cooling section is provided with a cooling water inlet and outlet, and the back end of the steel tube of the cooling section is extended from the furnace body of the cooling section. The advantage is that the qualified rate of products is high.
【技术实现步骤摘要】
烧发热体炉
:本技术涉及一种碳化硅重结晶用的炉。
技术介绍
:现有的烧发热体炉包括碳管,碳管外部设有炉体,炉体固定在支架上,炉体与碳管之间填充有炭黑,碳管上设有铜电极。生产时将硅碳棒的生坯置于石墨舟内,石墨舟在碳管内行走的同时给生坯加热。生坯经过180℃烘干后还含有一定的水分,直接进入到烧发热体炉2450℃的碳管内,由于升温过急,温差过大,导致产品弯曲变形和出现横裂、纵裂现象,产品合格率低。另外工件加热后在室温下降温,降温速度慢。
技术实现思路
:本技术所要解决的技术问题是提供一种产品不易弯曲变形,不易出现横裂和纵裂现象,产品合格率高的烧发热体炉。上述目的是这样实现的:它包括石墨发热管,石墨发热管外部设有炉体,炉体安装在支架上,石墨发热管的两端与炉体连接并伸出炉体外,炉体外的石墨发热管上装有铜电极,其特征是:位于炉体内的石墨发热管外部设有石墨保护套,炉体与石墨保护套之间设有炭黑保温层,石墨发热管前端连接有预热段钢管,石墨发热管后端连接有冷却段钢管;在预热段钢管外部设预热段炉体,预热段钢管的前端从预热段炉体中伸出,位于预热段炉体内部的预热段钢管外部套有陶瓷管,陶瓷管上缠绕有电热丝,电热丝从预热段炉体中伸出,陶瓷管外部的预热段炉体内填充有硅酸铝毡;在冷却段钢管外部设冷却段炉体,冷却段炉体上设有冷却水进口和冷却水出口,冷却段钢管的后端从冷却段炉体中伸出。装有硅碳棒生坯的石墨舟先进入预热段钢管进行预热,然后进入石墨发热管,然后从冷却段钢管出来。本技术的优点是:由于设有预热段炉体,硅碳棒生坯在该处进行预热,预热温度为700℃,然后硅碳棒生坯再进入石墨发热管内进行加热,这 ...
【技术保护点】
1.烧发热体炉,包括石墨发热管(1),石墨发热管外部设有炉体(2),炉体安装在支架(3)上,石墨发热管的两端与炉体连接并伸出炉体外,炉体外的石墨发热管上装有铜电极(4),其特征是:位于炉体内的石墨发热管外部设有石墨保护套(5),炉体与石墨保护套之间设有炭黑保温层(6),石墨发热管前端连接有预热段钢管(7),石墨发热管后端连接有冷却段钢管(8);在预热段钢管外部设预热段炉体(9),预热段钢管的前端从预热段炉体中伸出,位于预热段炉体内部的预热段钢管外部套有陶瓷管(10),陶瓷管上缠绕有电热丝(11),电热丝从预热段炉体中伸出,陶瓷管外部的预热段炉体内填充有硅酸铝毡(12);在冷却段钢管外部设冷却段炉体(13),冷却段炉体上设有冷却水进口(14)和冷却水出口(15),冷却段钢管的后端从冷却段炉体中伸出。
【技术特征摘要】
1.烧发热体炉,包括石墨发热管(1),石墨发热管外部设有炉体(2),炉体安装在支架(3)上,石墨发热管的两端与炉体连接并伸出炉体外,炉体外的石墨发热管上装有铜电极(4),其特征是:位于炉体内的石墨发热管外部设有石墨保护套(5),炉体与石墨保护套之间设有炭黑保温层(6),石墨发热管前端连接有预热段钢管(7),石墨发热管后端连接有冷却段钢管(8);在预热...
【专利技术属性】
技术研发人员:刘冬义,李发光,朱丽辉,朱学武,
申请(专利权)人:辽阳宏图碳化物有限公司,
类型:新型
国别省市:辽宁,21
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