面向阳极氧化及电泳喷涂的再生铝合金型材挤压方法
By adding strontium and boron to recycled aluminum ingots, and combining thermodynamic gradient and rheological control, the problem of microscopic defects on the surface of recycled aluminum alloy profiles was solved, achieving high-quality anodizing and electrophoretic spraying effects, and improving production efficiency and material utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN QIANYUAN ALUMINUM CO LTD
- Filing Date
- 2026-04-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies, when using recycled aluminum alloys to produce profiles with high surface quality requirements, struggle to eliminate the difference in rheological rates between hard, iron-rich phase particles and the soft aluminum matrix, leading to microscopic cavities and dislocation pile-up, which affects the effects of anodizing and electrophoretic spraying.
By adding strontium and boron to recycled aluminum ingots to form a strain rate-sensitive interface enrichment layer, combined with axial thermodynamic gradient construction and critical strain rate rheological extrusion, and in conjunction with online gradient freeze quenching, interface shear thinning and interface lubrication are activated, rheological resistance is eliminated, and the surface density and electrochemical uniformity of the profile are ensured.
This technology achieves a uniform surface gloss on recycled aluminum alloy profiles after anodizing and electrophoretic spraying, eliminates micro-tears and black streaks, improves production efficiency and material utilization, and reduces raw material purification costs.
Smart Images
Figure CN122099095B_ABST