针对加热-冷却的循环工况条件下使用的耐火泥材质烧制而成的感应圈内衬易出现爆裂的现象,研制了一种适合该工况要求下使用的新型中频感应圈内衬,对其选材、制备过程及应用效果进行了详细阐述。

Despite their excellent friction and wear resistance and considerable fatigue strength,copperbase alloy and aluminum-base alloy sliding bearings are not so attractive due to their insufficient anti-seizure and oil retaining capabilities.In order to satisfy the technical specifications of sliding bearings for diesel engines on high speed and heavy-haul locomotives,steel-backed copper-lead alloy bimetal sliding bearing is produced with induction heating and particle centrifugal melting processes,which is characterized not only by its breakthrough of the limit to properties of alloyed materials,but also by its fine fatigue strength,compliance,oil retaining,corrosion resistance and anti-seizure performance.Practical application proves that the mechanical properties,bimetal bonding strength,fatigue strength,reliability,alloy utilization rate and microstructure of the sliding bearing manufactured with this new process are better than that produced with other techniques.