China Vacuum Brazed Diamond Core Bit Factories & Factory

The global construction, architectural stone processing, and advanced installation sectors are experiencing an unprecedented surge in demand for ultra-hard synthetic composites, sintered stone (Dekton, Neolith), quartzites, and dense reinforced concrete. In response to these brittle and highly abrasive substrates, traditional electroplated tools exhibit severe limitations: weak mechanical anchoring (often only 20-30% diamond crystal immersion) and low thermal tolerance, leading to premature grain strip-off and short tool lifespans.

China Vacuum Brazed Diamond Core Bit factories, led by advanced engineering operations such as Johnson Tools in Jiangsu, have spearheaded the metallurgical transition. In vacuum brazing, an active brazing alloy (typically nickel-chromium or silver-copper with titanium additions) melts under high vacuum (< 10⁻³ Pa) and controlled temperatures between 950°C and 1080°C. This chemical reaction creates a robust chromium carbide or titanium carbide interface on the synthetic diamond surface, yielding a bond strength exceeding 400 MPa.