Not necessarily.
In diamond tool applications, joint strength only needs to exceed the actual cutting load.
Vacuum brazing’s advantage lies in stability and repeatability, not extreme strength.

Because in vacuum brazing:
•The diamond position is predefined.
•A paste-type brazing alloy with inherent viscosity is used; after drying, it provides initial positional stability
•Heating is uniform across the assembly, avoiding sudden localized melting
•Heating parameters are predefined, making alloy softening and melting behavior predictable
•Alloy wetting behavior is stable and controllable
In contrast, induction and torch brazing involve rapid localized heating. The brazing alloy may melt suddenly in a confined area without overall thermal equilibrium, which is why manual intervention is often required to prevent diamond movement.
 

An active brazing alloy contains reactive elements (such as titanium) that form chemical bonds (e.g., TiC) with diamond surfaces at high temperature, allowing direct brazing without metallic coatings.
 

Whether the diamond moves during brazing is mainly governed by:
•Fixture design, which defines and constrains the diamond position in advance
•Thermal equilibrium (i.e., a slow and uniform temperature evolution across the assembly, without temperature gradients capable of inducing sudden flow)
•The wetting behavior of the brazing alloy and its predictability—not simply by the viscosity of the brazing alloy.

In vacuum brazing, the entire assembly is heated in a uniform and controlled manner.
The transition of the brazing alloy from solid to molten state is gradual and predictable,
preventing sudden localized flow that could displace the diamond. As a result, manual intervention is not required.
 

Vacuum brazing may not be economically justified when:
•Production volume is low
•Tool unit value is limited
•Tool life consistency is not a competitive requirement

In such cases, traditional brazing methods may offer better cost efficiency.
 

CFRP is an extremely abrasive material.
Studies show that CVD diamond, due to the absence of metallic binders, offers superior thermal stability and wear resistance.

In specific CFRP applications, tool life can be up to six times longer than that of conventional PCD, while significantly reducing fiber pull-out and burr formation.
 

No.
CVD diamond is electrically insulating and therefore cannot be processed using EDM or EDG techniques. Laser cutting must be used for shaping, followed by high-vacuum active brazing to attach the diamond element to the tool body.

Diamond is extremely sensitive to oxygen at elevated temperatures. Even trace oxygen levels during brazing can lead to graphitization and severe degradation of diamond properties.

Vacuum levels on the order of 10^{-6} torr are critical for protecting diamond integrity during brazing at temperatures between 900–1000 °C.

Pin Power provides an academically validated brazing solution.

Through precise temperature control (±3 °C accuracy) and high-efficiency vacuum purification, the system ensures that active brazing pastes form strong chemical bonds without compromising the diamond structure.

MID certified Energy Management ensures that power consumption is monitored according to international measurement standards. In Pin Power machines, this allows manufacturers to precisely track energy costs and optimize production efficiency