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| top cone (【技】转炉炉帽：转炉炉壳的组成部分之一，位于圆柱形炉身之上。炉帽形状有截头圆锥体形和半球形两种。半球形的刚度好，但制造时需要做胎膜，加工困难；截头圆锥体形制造简单，但刚度稍差。炉帽上设有出钢口。通常还焊有挡渣板(护板、裙板)，防止喷溅物烧损炉体及托圈。有的转炉还在挡渣板背面焊有蛇形水冷管通水冷却。在炉帽的顶部，普遍装有水冷炉口，以防止炉口钢板在高温下变形，提高炉口寿命，减少炉口结渣。) | |||
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