High-Temperature Vacuum Hot Press enables densification sintering of advanced refractory materials—such as ceramics, carbon composites, and superalloys—through coordinated high temperature, pressure, and vacuum. Precise control prevents oxidation while promoting diffusion and plastic flow, yielding near-theoretical density and uniform microstructure.
Its key strength lies in producing high-purity, high-density complex-shaped parts with controlled composition, minimal defects, and superior performance, widely used in aerospace, nuclear, cutting tools, and semiconductor industries.
PRODUCT DESCRIPTION
Three Stages of Vacuum Hot Pressing Process
1. Loading & Vacuum Evacuation
Place powder, green body, or preforms into a graphite/stainless steel mold. The assembly is transferred to a sealed furnace chamber, evacuated to below 10⁻² Pa to remove oxygen and gases, while heating begins under a controlled temperature ramp toward sintering levels (1200–2200°C).
2. Vacuum Hot Pressing
Once temperature and vacuum stabilize, apply precise axial pressure (MPa range) via hydraulic/electric servo. High temperature, pressure, and vacuum jointly drive particle rearrangement, diffusion, and plastic flow, eliminating pores, preventing oxidation, and controlling grain growth.
3. Cooling & Unloading
After dwell time, heating stops and controlled cooling begins under vacuum/inert gas. Once cool, pressure is released, inert gas reintroduces, and the densified part—with uniform microstructure and high density—is removed.
CUSTOMIZED PRODUCTS
Custom equipment manufacturing: end-to-end solutions for your needs, empowering core competitiveness.
中文 
