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我厂RJJ-25-9T气体渗碳炉的电机冷却效果不好、风扇轴密封不好,影响渗碳质量。我们将风扇轴密封改为如图所示结构,解决了密封和冷却问题。其中密封填料为:石棉3％,粒状石墨35％,铅粉25％,铅粉细末16％,黄麻纤维3％,气缸油18％(先将前述几种料混合均匀后,再加入气缸油调匀)。经几年来生产实践证明,这种结构能有效地降低轴承温度、避免灰尘等进入轴承;提高了炉子的密封性,提高了渗碳质量;减少了维修工时,安全可靠。
I plant RJJ-25-9T gas carburizing motor cooling effect is not good, the fan shaft seal is not good, affecting the quality of carburizing. We changed the fan shaft seal to the one shown in the figure to solve the sealing and cooling problems. The sealing filler is asbestos 3%, 35% of granular graphite, 25% of lead powder, 16% of finely powdered lead, 3% of jute fiber, 18% of cylinder oil (after the above materials are mixed uniformly, Mix well). After several years of production practice has proved that this structure can effectively reduce the bearing temperature, to avoid dust and other bearings; improve the furnace sealing, improve the quality of carburizing; reduce maintenance time, safe and reliable.