为提高铜合金熔炼过程中的冶金质量及操作安全性,研制了一种使用寿命长的中频感应炉炉衬的打结工艺,实际生产应用表明,该炉衬结合强度高,导热性好,烘炉所需时间短,熔炼过程中未出现炉体的内外衬分离和石墨坩埚的架空及开裂现象,且杂质含量少,使用寿命大幅度提高。

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.

滑动轴承是各种机械广泛使用的重要基础零件,它的抗疲劳磨损性能直接影响着整机的可靠性和使用寿命,国际上很多知名的轴瓦材料供应商对各种滑动轴承材料的磨损性能进行了比较系统的研究,推出了很多优质的双(多)层金属轴瓦材料.