Smartphone 3D heat-bent glass cover plate mold Product Introduction
Smartphone 3D Curved Glass Cover Mold - A high-precision graphite mold specially designed for the front and back covers of mobile phones, as well as the UTG glass of foldable screens. It supports 2.5D curved edges, 3D surfaces, four-sided curvature, waterfall screens, and other full-form shapes for molding. It is suitable for the production needs of mainstream mobile phone brands (such as Apple, Huawei, Xiaomi, Samsung, etc.) of flagship models.
Core Applications
Front Cover Molding: Achieve precise curved surface molding of ultra-thin glass ranging from 0.4 to 1.1mm, ensuring touch sensitivity and display clarity
Back Cover Molding: Adapt to the requirements of wireless charging and 5G signal transmission, with the curvature tolerance controlled within ±0.005mm
UTG Glass of Foldable Screens Molding: Support hot bending of ultra-thin flexible glass ranging from 0.03 to 0.1mm, with a folding radius R ≤ 3mm and a folding life of ≥ 200,000 times
Camera Module Glass Molding: Achieve precise curved surface molding of high-precision lens protection rings and decorative parts, enhancing optical performance and appearance texture Material selection
| Material Type | Key Parameters | Application Scenarios |
|---|---|---|
| Ultra-fine Grain Isostatic Graphite | Carbon content ≥99.99%, Particle size ≤4μm, Density 1.88-1.93g/cm³ | Flagship smartphone covers, requiring ultra-high precision (tolerance ≤±0.005mm) |
| SiC-Coated Graphite | Coating thickness 30-80μm, Hardness HV≥2800, Oxidation resistance temperature ≥1200℃ | High-volume production lines, extending mold life by 50-80% |
| High-Strength Graphite Composite | Flexural strength ≥70MPa, Compressive strength ≥120MPa, Low creep rate | Large-size (6.7-7.2 inch) phone back covers, withstanding high forming pressure |
| Anti-Stick Coated Graphite | Surface energy ≤20mN/m, Non-adhesion with molten glass | UTG folding screen glass, preventing glass sticking during demolding |
Core features
Ultra-high forming accuracy: Surface tolerance ≤ ±0.005mm, edge curvature consistency deviation < 0.003mm, ensuring seamless adhesion of glass to the body
Uniform heat conduction performance: Thermal conductivity 120-180W/m・K, thermal field uniformity deviation ≤ ±1℃, reducing the risk of glass thermal stress cracking
Extremely long service life: Single use service life ≥ 10,000 thermal bending cycles, with SiC coating treatment, it can reach over 15,000 cycles
Low surface roughness: Mirror-polished surface with Ra ≤ 0.4μm, ensuring the smoothness and optical performance of the glass after forming
Excellent thermal stability: Thermal expansion coefficient (4.5-5.5)×10⁻⁶/℃, highly matching with the glass thermal expansion coefficient (6.5-7.5)×10⁻⁶/℃, alleviating thermal stress
Technical advantages
Yield improvement: Optimization of mold accuracy and thermal field uniformity leads to a glass thermal bending yield rate of over 95%, reducing production costs
Fast mold change: Standardized design supports 15-minute rapid mold change, suitable for multi-model flexible production lines
Customized textures: Support for micro-structural texture processing on mold surfaces, achieving integrated formation of AG/AF effects on the glass surface
Intelligent wearable 3D heat-bent glass watch lens mold
Product Introduction
Wearable 3D Curved Glass Lens Mold - A small-sized and high-precision graphite mold specially designed for smartwatches, bracelets, and AR/VR devices. It supports the curved surface forming of circular, square, and irregular dial designs. The minimum bending radius is R3mm, and the thickness is suitable for ultra-thin glass requirements of 0.3-0.7mm.
Core Applications
Smartwatch bezel forming: Suitable for round, square, and irregular-shaped dials, ensuring seamless adhesion between the glass and the case
Smart bracelet screen forming: Achieving precise curved surface forming of 20×30mm small-sized glass, enhancing wearing comfort
AR/VR optical component forming: Supporting high-precision curved surface forming of waveguide covers and display windows, ensuring optical performance
Health monitoring device window forming: Curved design of the biological sensor window, balancing optical transmissibility and protective performance Material selection
| Material Type | Key Parameters | Performance Advantages |
|---|---|---|
| High-Purity Isostatic Graphite | Ash content ≤10ppm, Density 1.85-1.90g/cm³, Porosity ≤12% | Small-size wearable devices, ensuring glass purity and surface quality |
| Low-Thermal-Expansion Graphite | Thermal expansion coefficient ≤4.0×10⁻⁶/℃, Thermal shock resistance ≥1000℃/s | Round watch lenses, maintaining dimensional stability during rapid heating/cooling |
| High-Smoothness Graphite | Surface roughness Ra≤0.2μm, Mirror polishing finish | AR/VR optical components, ensuring high light transmittance and clarity |
| Custom Shape Graphite | Machining accuracy ≤±0.002mm, Complex curve design capability | Irregular-shaped wearable devices, realizing unique product design |
Core features
Small size and high precision: The minimum processing size is 20×30mm, with a tolerance controlled within ±0.002mm. It meets the miniaturization requirements of wearable devices.
Lightweight compatibility: The mold weight is reduced by 30%, compatible with high-speed hot bending production lines, and improves production efficiency.
Thermal shock resistance: Capable of withstanding rapid temperature changes of 1000℃/s, without the risk of cracking or deformation.
Biocompatibility: High-purity graphite material, no heavy metal leaching, in line with ISO 10993 biocompatibility standards.
Customization capability: Supports any irregular curved surface design to achieve product appearance differentiation.
Technical advantages
Ergonomic optimization: The curved surface design fits the arc of the wrist, enhancing wearing comfort by 50%
Optical performance guarantee: High-precision mold surface ensures a glass transmittance of ≥92% and a haze of ≤0.5%
Quick prototyping: Customized mold prototyping can be completed within 3 days, accelerating the product development cycle
