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31 同一排火内中外收缩相差5～6cm产生原因 ①砖坯干湿混装,收缩不(?)②内、中、外火行速度不一致;③码窑半边过稀,半边过密.处理方法 ①收缩少的地方加盖烧,收缩大的地方揭盖烧;③适当调闸,外部收缩小时首闸落迟,内部收缩小时,落前闸1～2个或降低用闸高度,以利升温.③提高码窑质量,内外稀密程度应适应收缩要求.32 坯垛不对准火眼
31 The difference in the shrinkage between the inside and outside of the same row within 5～6cm. Cause 1 The dry and wet mixed bricks, the shrinkage is not (?) 2 The fire speeds of the inside, middle and outside are inconsistent; 3 yards of kiln half are too thin and the half is too close. Treatment Method 1 The place with less shrinkage is stamped and burned, and the place with large shrinkage is uncovered and burned. 3 Proper adjustment of the gate, external contraction starts at the first time, and the internal contraction is small. The drop gate is 1 to 2 or the height of the brake is lowered to facilitate warming. 3 Improve the quality of the code kiln, the degree of internal and external scarification should meet the contraction requirements. 32 blanks do not aim at the fire eye