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提升机轴承位磨损在线修复

2024-09-03

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(来源:福世蓝)

提升机是通过改变势能进行运输的大型机械设备。水泥行业应用较广为斗式提升机,可适用于粉状、颗粒状、小块状磨琢性或无磨琢性物料的输送,如生料、水泥、煤、石灰石、干粘土、熟料等。

现场情况说明

出现提升机轴承位磨损的企业为烟台某水泥行业,该轴直径φ240mm,单边磨损量约1.3mm,轴承型号为23148CA/C3W33。此轴由于轴承损坏后未及时发现,故障情况下继续运转导致轴承位出现严重磨损。

轴类出现磨损的原因有很多,主要的原因之一是用来制造轴的金属特性决定的。金属虽然硬度高,但是退让性差(变形后无法复原),抗冲击性能较差,抗疲劳性能差,因此容易造成粘着磨损、磨料磨损、疲劳磨损、微动磨损等。大部分的轴类磨损问题都不易察觉,只有出现机器高温、跳动幅度大、异响等情况时,大部分轴都已磨损严重,从而造成机器停机。

福世蓝现场修复模式

此次修复工艺采用福世蓝刮研法。首先根据未磨损的前后轴肩为基准加工样板尺,轴承位表面处理达标后首先按要求调和并涂抹福世蓝®高分子复合材料2211F,然后使用样板尺以未磨损位置为基准进行刮研,待材料固化后打磨材料釉面再次涂抹薄薄一层材料后快速热装轴承。

福世蓝®高分子复合材料2211F是一种抗高温、抗强腐蚀并可以机加工的金属修复、保护复合材料,此材料具有良好的粘结力和机械性能,不仅有金属所具有的强度、硬度,还有其退让性。

应用高分子材料修复可免拆卸、免机加工,既无补焊热应力影响,修复厚度也不受限制。高分子复合材料的应用可以使企业快速有效完成现场修复,避免各种时间及经济的损失,而且高分子复合材料修复属于冷焊技术,不存在热应力等问题,可以避免基材的二次损坏。

现场修复步骤

(1)加工样板尺:精确测量前后轴肩未磨损位置尺寸,根据尺寸加工合适样板尺;

(2)表面处理:使用氧气乙炔火焰炙烤待修复表面并使用磨光机打磨轴承位表面,直至露出金属原色,确保待修复表面干净、干燥、结实;

(3)清洗表面:使用无水乙醇清洗轴承位表面及轴承内圈表面;

(4)涂抹福世蓝2211F材料:计算材料用量并充分调和均匀后涂抹福世蓝2211F高分子复合材料,建议首先用手直接涂抹,保证高分子材料的填充效果,然后用刮板均匀涂抹,厚度略高于单边磨损量;

(5)刮研材料:使用样板尺以未磨损位置为基准进行刮研,去除多余材料;

(6)打磨材料釉面:待材料固化后,使用砂纸打磨去除材料釉面,并使用无水乙醇清洗;

(7)安装轴承:再次调和少量福世蓝2211F材料,薄薄涂抹一层快速热装轴承。

淄博福世蓝高分子复合材料技术有限公司自2002年成立至今,福世蓝技术现场修复工艺在煤矿、水泥、造纸、钢铁、橡胶轮胎、机械制造等行业,针对各类设备轴头、轴承位部位磨损都已实施了在线修复。福世蓝®高分子复合材料现场修复技术与传统检修相比不但节约了维修时间,而且用途广泛,隐患风险小,方便快捷,操作简单,人工强度低,是值得推广的现场设备维修维护的重要技术手段。