METHOD OF ASSEMBLING A GAS CIRCULATION BLOCK PROVIDED FOR METALLURGICAL VESSELS

用于冶金容器的气体流通塞的装配方法，装配期间，锥形金属片套被放在型塞上，型塞为截锥体并由耐火材料制成，装有气体输送管的金属片盖被装置在型塞的大头端面上，然后金属片被焊接到金属片盖上。为减少装配工作，同时改进气体流通性能，锥形金属片套在安到型塞上之前要进行加热，通过金属片套的收缩可补偿各种类型的尺寸误差，无论在型塞上还是在金属片套上，以使金属片套在热套的条件下，在型塞的全部圆周和长度上均匀地紧紧贴牢。 During the assembly of a gas circulation block, encased in sheet metal, a conical sheet-metal sleeve is placed onto a shaped block which is in the form of a truncated cone and made of a refractory material, then a sheet-metal cover provided with a gas supply tube is laid onto the larger end face of the shaped block and then the sheet-metal sleeve is welded onto the sheet-metal cover. In order to reduce the assembly effort and at the same time to create an improved gas circulation block, the conical sheet-metal sleeve is heated up before placing onto the shaped block and is then shrunk onto the shaped block. By the shrinking of the sleeve, every type of dimensional inaccuracy is compensated for, whether on the shaped block or on the sheet-metal sleeve, so that the sheet-metal sleeve, in the shrunk-on condition,