This Metal Hot Zone High Temperature Vacuum Furnace, designed for brazing and sintering, operates stably up to 2200°C in vacuum and 1800°C in H2. Its metal hot zone prevents carbon contamination, critical for high-quality firing of non-oxide fine ceramics in vacuum, hydrogen, or inert gas. Features include reduced maintenance costs from deformation/wear-resistant design, uniform temperature, and fully automatic program control. Models (e.g., 40, 50, 100) offer effective dimensions from 200x500x200mm to 300x600x300mm and processing capacities from 40kg to 400kg, ensuring reliable industrial performance.