Abstract
The article presents the problem of direct brazing of diamond to the tool body. The greatest threats to the brazing joint were discussed: stress and poor wettability. Methods for producing polycrystalline diamond blanks by various methods were presented. The metal alloys (solders) with a silver, nickel and copper matrix that is used for brazing diamonds were described. The most commonly used brazing methods (resistance, induction, laser and infrared) were discussed.
Highlights
Increasing the strength of metal-ceramics joints is the goal of many scientific studies
The most dangerous is large difference in internal stress. These stresses can add up to tensile operating stresses, which sometimes leads to exceeding the strength of the entire joint and, as a result, to its destruction [1]
For sensitive brazing operations, such as brazing diamonds, the induction system can be equipped with an optical pyrometer that facilitates the closed-loop temperature control
Summary
The article presents the problem of direct brazing of diamond to the tool body. The greatest threats to the brazing joint were discussed: stress and poor wettability. Methods for producing polycrystalline diamond blanks by various methods were presented. The metal alloys (solders) with a silver, nickel and copper matrix that is used for brazing diamonds were described. The most commonly used brazing methods (resistance, induction, laser and infrared) were discussed.
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