the invention discloses a metal - bonded diamond grinding wheel prepared by self - propagating pressure - less sintering and a preparation method thereof . the metal bonded diamond grinding wheel mainly comprises a working layer and a non - working layer , wherein the working layer comprises metal bond and grinded diamond , the non - working layer is metal bond , and the metal bond in the working layer and non - working layer have the same components that comprise metal powders of cu , al , ni , ti , sn , and co . to prepare the metal - bonded diamond grinding wheel prepared by self - propagating pressure - less sintering solves the problems of high energy consumption and low manufacture efficiency in the current sintering processes of the metal bonded diamond grinding wheel , and improves the binding force of the metal bond to the grinded diamond by forming carbides between the bond and the grinded diamond .