Recent Research and Mechanism Analysis of Free-Cutting Brass
The element of Pb contained in the traditional free-cutting lead brass harms environment and humans badly,so it urgently needs to looking for one or some kinds of elements to substitute the element of Pb in the free-cutting lead brass.This paper introduces the current development of free-cutting brass and some kinds of free-cutting brass which has potential prospects through comparing and analyzing their properties.The cutting mechanism is explored from the characteristics of free-cutting brass.The cutting property has been improved by adding many kinds of microelements such as Ni,P,Ca and rare earth like Ce and that achieves the aim of reducing lead or lead free in the free-cutting brass.