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目前所使用的电阻丝电阻炉,通常都是电阻丝把炉墙加热,然后再向炉膛传热,因而炉墙温度高于炉膛,而电阻丝温度要高于炉墙,实际上电阻丝的温度要高于炉膛温度120～200℃。所以,一般电阻丝电阻炉最高使用温度不能超过1000℃,在低于500℃时,因温差大不能满足热处理工艺要求。我们组织了大连制刀厂和大连坩埚厂协作,在学习外地经验的基础上,研制了碳化硅炉胆辐射炉,经试用有下列特点。
Currently used resistance wire resistance furnace, usually resistance wire to the furnace wall heating, and then to the furnace heat, so the furnace wall temperature is higher than the furnace, and resistance wire temperature is higher than the furnace wall, in fact resistance wire temperature Higher than the furnace temperature 120 ~ 200 ℃. Therefore, the general resistance wire resistance furnace maximum temperature can not exceed 1000 ℃, below 500 ℃, because of the large temperature difference can not meet the heat treatment process requirements. We organized the Dalian knife factory and Dalian crucible factory collaboration, based on the study of field experience, developed a silicon carbide furnace radiation furnace, the trial has the following characteristics.