Add hot cell liner to use 230mm of brick of light qualitative clay and build by laying bricks or stones of adiabatic brick 70〜116mm to build commonly to tower type furnace. Namely high temperature resistant, adiabatic effect good. To assure its stability, along high direction part of one's job Duan Yongjin belongs to Liang Tuo to live, be in every paragraphs stay have expand removed. The liner of heat preservation room increases hot cell together identical. The cooling means of delay cold room, rely on radiation canal to be in air is not connected when heat addition with fast refrigeration, some relies on bricky layer to come loose only heat will cool, also some sets special cooling wind canal, liner of delay cold room uses brick of 120〜15Omm heat insulation. In recent years, gush is used extensively to blow condenser in cooling chamber of tower type furnace, removed water a few defect of direct cooling, reach board range brightness and board body is neat, length of fast cold room also can shorten 50% above. To assure close sex, there is the close say sth definitive so as to prevent further discussion that fireproof fiber makes between sealed roller and passageway, metal strip moves in, sealed roller can be changed below the condition that does not pollute protective gas. The roller canister of the roller inside furnace uses refractory steel to make.
When having shining heat treatment, because use,contain H2 tall, the atmosphere with low dew point, ma Fu or tall purity alumina are set inside furnace so liner of qualitative brick build by laying bricks or stones, black lead roller also is used inside some furnace. As a result of stainless steel medium alloying element oxidizes extremely easily, to achieve shining appearance, the requirement is in purity pole heats high in the process not separate out any harmful gas, also do not produce effect with hydrogen at the same time. Solid base proves: Use tall purity alumina bricky build by laying bricks or stones is built heat Duanke satisfies this one cost to beg. High pure those who spend alumina brick is fireproof spend and loading softening point is high, there is good chemical stability below high temperature, do not produce effect with hydrogen, won't pollute protective gas. This brick has pledge again (the capacity is more than 3g/cm3 and pledge gently (unit weight 1.35g/cm3) two kinds. Vertical furnace adds the majority of hot cell to use light qualitative brick, just mix in a few bottom canal of template of a few different uses heavy qualitative brick. Build by laying bricks or stones builds place to use plaster also is tall purity alumina pledges. Light qualitative brick is adiabatic can good, bricky layer but thinner, accordingly, medicinal powder loss of hot, accumulation of heat is small. But blow with what pledge the brick can add oven gently brush diffuse time, so this kind of furnace should maintain serial production as far as possible. Expand considering be heated and the stability of brick wall, section of height of edge boiler setting (every 2m is controlled) with the metal Liang Tuo lives, certain gap leaves between Duan Zhi each, fill with heat insulating materials.
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