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Why the electric furnace internal severe crack in the wall part?
As shown in figure: the furnace is sintering of zirconia ceramics, using temperature at 1500 ℃, but the furnace has two obvious defect without air intake and air flow. Ceramic raw embryo generally contains 1 ~ 5% of organic matter, organic matter under 600 ℃ will discharge, but without inlet and vent, excluded from organic matter (contain K, Na) would be absorbed by the chamber of a stove or furnace material, the high temperature will be severe cracking furnace and furnace material reaction materials, because of the organic matter density than air, so in the chamber of a stove or furnace part of cracks are more serious.
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