行业 · 交通运输

交通运输 的粘接解决方案。

轨道交通车辆在持续振动、大幅温度变化及高频次服务条件下运行。MightyLoc 提供适用于内外部密封的 MS 聚合物胶粘密封剂,以及覆盖小型至大型紧固件的厌氧螺纹锁固剂。两类产品共同应对轨道交通车辆装配及场段维护中的两大化学粘接难题。

常见问题解答 · 交通运输

交通运输 团队常见问题。

轨道交通车辆装配与维护中的密封及紧固件锁固挑战有哪些?

Rail and mass-transit vehicles accumulate very high duty cycles. Constant vibration from track inputs and drivetrain loading works threaded fasteners loose on brackets, cab fittings, and interior equipment; rail bogie fasteners follow the vehicle builder’s specification. A fastener that loosens in service can create noise, accelerate wear on adjacent components, or trigger an unplanned maintenance event. At the same time, panel joints, trim lines, window surrounds, and equipment penetrations require an elastic sealant that stays flexible across the temperature range seen between air-conditioned interiors and equatorial or temperate exteriors. Depot environments add the constraint that products used near workers must be low-odour and free of solvents that could build up in an enclosed space.

如何根据作业需求匹配产品?

Taftgrip 是一款单组分 MS 聚合物胶粘密封剂。它通过湿气固化形成可涂装弹性体,不含溶剂、异氰酸酯、有机硅或 PVC,且无腐蚀性。适用于接缝须保持柔韧性、且基材多样导致涂底漆不切实际的面板粘接与密封作业。针对螺纹紧固件,Taftlock 系列涵盖三种强度等级。Taftlock 22 为低强度厌氧螺纹锁固剂,适用于 6 mm 以下的紧固件,可使用手动工具拆卸。Taftlock 43 为中强度等级,适用于 6 至 20 mm 的紧固件,包括不锈钢及镀层零件。Taftlock 71 为高强度等级,适用于以永久锁固为优先要求的螺钉、紧固件及铆钉。

如何针对轨道交通服役条件进行选型?

All three Taftlock threadlockers operate from -55 to +150 C; rail bogie fasteners and other safety-critical fixings follow the vehicle builder’s specification. TaftGrip has a service range of -40 to +90 C, covering most interior and exterior sealing applications in tropical and temperate climates. Taftlock 22 and Taftlock 43 are both removable with hand tools, which matters for joints that require periodic service access. Taftlock 71 gives a permanent lock and suits fasteners and rivets that will not be disturbed in service. Anaerobic threadlockers cure between close-fitting metal surfaces in the absence of air; TaftGrip bonds to many substrates without a primer. Confirm surface cleanliness requirements against the current Technical Data Sheet for each product before application.