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浅谈镁碳砖出现竖缝的原因及处理方法
2025-09-08
镁碳砖是一种制作成型简单、耐高温、化学稳定、导热系数低的高性能耐火材料，被广泛应用于钢铁、有色金属冶炼等高温炉堆行业。但随着生产技术的发展和需求的不断增加，竖缝的出现问题也逐渐显现。
Magnesia-carbon bricks are a high-performance refractory material characterized by simple molding, high-temperature resistance, chemical stability, and low thermal conductivity. They are widely used in high-temperature furnaces in industries such as steel and nonferrous metal smelting. However, with the advancement of production technology and the continuous increase in demand, the problem of vertical seams has gradually emerged.
一 竖缝形成原因 I Causes of vertical cracks
1. 烧结温度不均匀：在烧结过程中，温度不均匀会导致材料收缩不同，从而形成缝隙。
2. 原材料配比不准确：原材料配比不准确会导致烧成后材料中孔隙率不同，形成缝隙。
3. 砖块损坏：在运输过程中，砖块受到撞击或震动等因素会导致砖块损坏，形成缝隙。
4. 高温腐蚀：在高温、强腐蚀性气氛环境下，砖块受到侵蚀会形成缝隙。
5. 预制环节问题：预制过程中不严格控制材料的浸润量和粘合强度，也可能导致竖缝的出现。
1. Uneven sintering temperature: During the sintering process, uneven temperatures can cause different shrinkage in the material, resulting in cracks.
2. Inaccurate raw material ratios: Inaccurate raw material ratios can lead to different porosity in the fired material, resulting in cracks.
3. Brick damage: During transportation, bricks can be damaged by impact or vibration, which can cause cracks.
4. High-temperature corrosion: In high-temperature, highly corrosive environments, bricks can corrode and form cracks.
5. Prefabrication issues: Failure to strictly control the amount of material infiltration and bonding strength during prefabrication can also lead to vertical cracks.
二 竖缝处理方法 II Vertical seam treatment method
1. 竖缝宽度小：可采取填缝、打补丁等方法进行处理。
2. 竖缝宽度大：需拆除缝隙处砖块，重新填充或更换砖块。
3. 大面积竖缝：需重新浇铸整块材料
1. Small vertical joints: These can be addressed with caulking or patching.
2. Large vertical joints: The bricks in the joints must be removed and refilled or replaced.
3. Large vertical joints: The entire block must be recast.
三 总结 III Conclusion
竖缝的出现会影响镁碳砖的使用寿命和使用效果。为避免竖缝的出现，应注意原材料的配比以及生产工艺控制，同时在使用过程中也需要做好维护和保养。对于已经出现竖缝的镁碳砖，应根据实际情况采取相应的处理措施。
The appearance of vertical cracks will affect the service life and performance of magnesia carbon bricks. To avoid the appearance of vertical cracks, attention should be paid to the ratio of raw materials and production process control. At the same time, maintenance and care should be done during use. For magnesia carbon bricks that have vertical cracks, appropriate treatment measures should be taken according to the actual situation.
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