The Analysis And Research On Sintering Preparation And Finishing Characteristic Of Magnetic Abrasive Grains

The technology of magnetic abrasive finishing (MAP) is new technics and new technology of finishing machining. The technology of magnetic abrasive finishing will achieve development and be rapidly spreaded in the product domain ,because of its especial machining way , which is good own sharpness of magnetic abrasive grains > fine own applicability of magnetic abrasive grains and workpiece -?good flexility of magnetic abrasive grains . By way of grinding tool, magnetic abrasive grains are key of magnetic abrasive finishing, so the paper analyses and researches grinding mechanism of magnetic abrasive grains and bring forward capability requirement of magnetic abrasive grains for magnetic abrasive finishing on the basic of it. In the paper,following items on MAGs have been analyzed: composition structure, shape, size, finishing pressure in grinding process and the preparation way of magnetic abrasive grains, then sintering preparation of magnetic abrasive grains is brought forward.So the author seriously studies the related knowledge of powder metallurgy and sintering theories, and the author theoretically open out influence of every tache for sintering magnetic abrasive grains in powder metallurgy production. These offer theoretically basis for establishing preparation scheme. The author makes lots experiment to making sure key technology parameter in the technologic process, and prove good to sinter magnetic abrasive grains by experiment. And the author studies machining characteristic of sintering magnetic abrasive grains by experiment. The first proper experiment parameter is made sure. Then the paper analyses machining characteristic of different material abrasive grains, different distributingcomposition, different granularity of abrasive grains and different sintering temperature. Machining effect is compared on felting and sintering magnetic abrasive grains. So experiment information is gained on affecting machining effect of sintering magnetic abrasive grains. These offer usefully technologic parameter for widely spreading of technology of magnetic abrasive finishing.