一种利用合金粉末提高镁碳砖模具服役寿命的激光加工方法
By combining laser cladding with heat treatment, a high-hardness, crack-resistant laser coating is formed on the surface of magnesia-carbon brick molds using Class A and Class B alloy powders. This solves the problems of short lifespan and insufficient wear resistance of magnesia-carbon brick molds, thereby improving production efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 湖南瑞华新材料有限公司
- Filing Date
- 2023-12-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing magnesia-carbon brick molds have short service life, large welding deformation, a high tendency for cracking in the cladding layer, large fluctuations in the hardness of the functional layer, and insufficient wear resistance, resulting in low production efficiency and high costs.
Laser cladding is performed using Class A and Class B alloy powders, combined with heat treatment processes such as deformation preheating, heating homogenization, and spheroidizing cooling to form a microstructure consisting of martensite phase, multiple dispersed spherical carbide phases, and trace amounts of retained austenite phase. The hardness and crack resistance of the cladding layer are improved through uniform mixing of alloy powders in the molten pool and high-temperature microstructure design.
A laser coating with high hardness, uniform hardness distribution, excellent toughness, no cracking, and good wear resistance was achieved for magnesia-carbon brick molds, with a service life of more than 50,000 cycles, reducing production costs and labor intensity and improving production efficiency.
Smart Images
Figure CN117867489B_ABST