i wanna know about applications of self lubricant metals that used in production of cylenders?

Answer 1

self lubricated metals/bearings are sintered porous metal bearings.they are powder metallurgical parts. the starting materials are metal powder. The metal powder used are specifically produced to give flow and compacting characteristics and at the same time ensure best mechanical strength, grade or porosity for oil retention and self lubrication in its finished form.
the detailed process of manufacturing is :
1, Forming
2, Sintering
3, Sizing
4, Oil Impregnation

Answer 2

Graphite is used as a lubricant.