The DR furnace is a steel vessel with an internal refractory lining in the reducing zone.
直接还原炉是一种钢制容器，在其还原带内具有耐火材料做的炉衬。
It introduces how to produce high nitrogen ferrochrome in vacuum furnace, non - pressured vessel type.
简述了采用非压力容器型真空电阻炉生产高氮铬铁的过程。
The fabricated vessel shall be post-weld heat treated as a whole in an enclosed furnace whenever possible.
只要有可能，制造的容器应在一个封闭炉中进行整体焊后热处理。
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