In addition , under high sintering temperatures , iron powder can result in the graphitization of diamonds . these two reasons will affect the mechanical properties of the metal bond and its retention capacity . as a result , the wear resistance of metal bond is poor and diamond grits can be easily pulled out from the matrix , thereby shortening the life of the saw - blade 而且在高温下,铁粉会对金刚石产生较严重的化学侵蚀,这两方面的原因都会影响结合剂本身的力学性能及其对金刚石的有效把持,导致锯切过程中结合剂耐磨性差,金刚石容易脱落,使锯片寿命缩短。