Researches on Brass containing Pb (Part 11)

First, the influences of hardness of steel shaft on the wear of brass have been studied, and then wear phenomena in rubbing against a shaft made of same kind of brass have been observed.The wear manner of 60 : 40 brass and 70 : 30 brass containing pb is little influenced by the hardness of mate-steel. But, the wear of the 70 : 30 brass free from Pb, rubbed against annealed steel, is perfectly adhesive and the wear of that aginst hardened steel is oxidizing.In rubbing the blanks of same kind of brass each other, the wear grows easily adhesive, and its relationship to rubbing speed is similar to that of the adhesive wear between brass and steel.