GLL Aluminium 360 Degree Polished Mandrel Bends Donut-Genleelai

GLL Aluminium 360 Degree Polished Mandrel Bends Donut

  

Our GLL Aluminium 360 Degree Polished Mandrel Bends Donut mold core adopts full-ring polishing technology, and through the combination of multi-axis linkage CNC machine tools and nano-level grinding technology, it achieves a mirror effect with a surface roughness as low as Ra0.01μm. This process breaks through the traditional polishing that only targets the circumference of a single plane. Through customized angles and dynamic compensation algorithms, it ensures that the outer arc surface, end surface and transition area of ​​the arc circle have consistent polishing quality. Its core advantages include:
Zero friction demolding: GLL ultra-smooth surface reduces material adhesion, significantly improves the demolding efficiency of injection molding, die casting and other processes, and reduces product defect rates.
Improved corrosion resistance: GLL polishing layer forms a dense oxide film that can resist acid and alkali environment erosion and extend the service life of the mold under complex working conditions.
Optimized heat conduction: GLL Mandrel Bends uniform polishing surface reduces thermal resistance and ensures consistent mold temperature distribution, which is suitable for the molding of high-precision optical components or medical devices.
GLL Aluminium 360 Degree Polished Mandrel Bends Donut uses aviation-grade 7075-T6 aluminum alloy as the base material. Through microalloying and heat treatment processes, its tensile strength exceeds 620MPa, comparable to some steels, but the density is only 1/3 of steel. This feature gives the bending ring the following advantages:

Lightweight design: The mold weight is reduced by 40%, which is convenient for rapid replacement of automated production lines and improves production rhythm.
Fatigue resistance: After 100,000 cycle tests, there are no cracks in the bending part, which is suitable for high-frequency start-stop die-casting scenarios.
Thermal conductivity: The thermal diffusion coefficient reaches 95W/(m·K), which is 3 times higher than that of traditional mold steel, shortening the molding cycle by 15%-20%.
GLL Aluminium 360 Degree Polished Mandrel Bends Donut adopts structural innovation: geometric optimization of the bent ring
In response to the needs of special-shaped parts forming, GLL uses topological optimization algorithms to design the curvature and wall thickness distribution of the bent ring. Through finite element analysis simulation, while ensuring the structural strength, the material is concentrated in the high-stress area to achieve:

Flow channel optimization: The curved arc surface guides the molten material to fill evenly, eliminating the flow dead corners of the traditional straight core tube and reducing weld line defects.
Stress dispersion: The variable cross-section design reduces the maximum equivalent stress by 35%, extending the fatigue life of the mold under high-pressure environment.
Multi-axis compatibility: The standard interface supports 5-axis linkage machining centers, which can quickly adapt to the installation requirements of different molds.

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