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前言托轮是回转窑设备中的主要零件,它承受设备在运转过程中转动部分的重量。托轮的转速比筒体还高3～4倍,因此托轮的表面在承受大载荷的运转过程中点蚀和磨损很厉害。另外,回转窑是在高温下连续作业的设备,在正常情况下托轮工作表面磨损速度一般为2～4毫米/年,要求具有6～10年的正常使用寿命。故此,托轮不仅要有足够的强度,而且还要有较高的硬度和接触疲劳强度,以及长期运转的可靠性和稳定性。
Preface Roller is the main part of the rotary kiln equipment, it withstands the weight of the rotating part of the device during operation. The speed of the roller is 3 to 4 times higher than that of the cylinder, so the surface of the roller is very pitting and wearing under the heavy load. In addition, the rotary kiln is a continuous operation of equipment at high temperatures, under normal circumstances work surface roller abrasion speed is generally 2 to 4 mm / year, requiring 6 to 10 years of normal life. Therefore, the support roller should not only have sufficient strength, but also have high hardness and contact fatigue strength, as well as long-term reliability and stability.