& nbsp; & nbsp; & nbsp;, Cement self-leveling; & nbsp; & nbsp; & nbsp; & nbsp;, Power car rental; & nbsp; A Trenker in Germany and others have used nickel-zinc based active brazing filler metals and nickel-based brazing filler metals respectively in the brazing process to achieve the bonding of diamond and matrix. The comparison chart with electroplated tools shows that the performance of high-temperature brazed diamond tools is much better than that of electroplated diamond tools, business kiosks, the initial grinding performance of brazed tools is more than 3.5 times that of electroplated tools, and the life span is more than three times that of electroplated tools; due to the larger chip space of brazed tools, the diamond abrasive grains have a larger free cutting surface and more space between abrasive grains, making it easy for chips to be discharged, so the grinding performance of nickel-zinc brazed diamond tools is good.
The Fourth Military Medical University and Xi'an Jiaotong University, based on domestic and international research on brazed diamonds, adopted the method of high-temperature brazing in a vacuum furnace, using NiCr13P9 alloy as the brazing material, with a small amount of Cr powder added, and carried out brazing under conditions of high temperature and pressure, thus achieving a strong bond between diamonds and steel substrates. The brazing material is evenly distributed on the surface of the grinding wheel, and the diamonds have been firmly brazed. Touching the surface of the grinding wheel feels quite sharp and rough. The brazing material is evenly distributed between the diamond abrasives, and the diamond protrusion height is high. Its wear resistance has significantly improved compared to electroplated grinding wheels, and only a small amount of nickel-zinc diamonds fall off after work.
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