一种硬质合金增材制造方法
By ball milling to prepare uniformly dispersed cemented carbide powder, intensive mixing to prepare printing feedstock with high powder loading, and using fused deposition modeling (FDM) technology to print green blanks, and by using a two-step solvent degreasing and vacuum pressure sintering process, problems such as porosity, cracks, oxidation and decarburization in existing technologies are solved, resulting in high-performance cemented carbide products suitable for mass production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2023-10-30
- Publication Date
- 2026-07-17
AI Technical Summary
In existing cemented carbide additive manufacturing processes, the technical problems that existing technologies cannot effectively solve include: specific problems that existing technologies cannot effectively solve include: porosity, cracks, performance inhomogeneity, and brittle phases in the cemented carbide production process, which lead to poor mechanical properties of cemented carbide.
Uniformly dispersed cemented carbide powder was prepared by ball milling, and a high-powder-load printing feedstock was prepared by intensive mixing. Green blanks were printed using fused deposition modeling (FDM) technology, and porosity and cracks were eliminated through a two-step solvent degreasing and vacuum pressure sintering process to prepare high-performance cemented carbide.
This invention achieves high relative density, non-porosity, crack-free, and decarburized phase-free cemented carbide products with superior microhardness and bending strength compared to existing technologies. It solves the technical problems existing in existing technologies, and the prepared cemented carbide products have excellent comprehensive mechanical properties, making them suitable for large-scale production.
Smart Images
Figure CN117600484B_ABST