Graphite Mold for Glass Encapsulation and Optics Forming
Product Overview
Our precision graphite molds are designed for glass-to-metal sealing, glass encapsulation of electronic components, and precision glass optics molding. Made from high-purity fine-grain isostatic graphite, these molds feature excellent thermal uniformity, non-stick surface, and precision machined optical surfaces for producing high-quality glass encapsulated components and precision glass optics.
We manufacture complete graphite mold sets including upper and lower dies, alignment guides, and ejector systems for various glass molding and encapsulation applications. Our graphite molds are used in semiconductor packaging, automotive electronics, and precision optics manufacturing worldwide.
Key Features
- High purity graphite for clean glass forming
- Ultra-smooth cavity surface for high-quality glass finish
- Excellent thermal conductivity for uniform mold temperature
- Non-stick surface for easy part release
- Dimensional stability at glass molding temperatures
- Complete mold sets with alignment and ejection
- Custom cavity designs based on your part geometry
- Long service life compared to steel molds
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | High purity fine-grain isostatic graphite |
| Purity | ≥99.95% |
| Density | 1.85 g/cm³ |
| Molding Temperature | 500-700°C (glass softening range) |
| Cavity Surface Finish | Ra ≤ 0.1 μm (polished) |
| Dimensional Tolerance | ±0.01 mm |
| Mold Plate Size | Custom based on part size |
| Available Coatings | Optional SiC or TaC coating |
Applications
- Glass-to-metal sealing for electronic packages
- Optical lens molding (precision glass optics)
- Semiconductor package encapsulation
- Automotive sensor glass sealing
- Hermetic seal manufacturing
- Medical device glass encapsulation
Why Choose Jincheng Graphite?
- Specialized in glass molding graphite tooling
- Ultra-precision polished cavities for optical quality
- Custom mold designs based on your part drawings
- Fast prototype turnaround for new product development
- Production mold sets for high-volume manufacturing
- Optional SiC/TaC coating for extended mold life
- Competitive pricing compared to precision steel molds
- Quality consistency from batch to batch
FAQ
Q: What types of glass can be molded with graphite molds?
A: Graphite molds work well for molding borosilicate glass, soda-lime glass, and most optical glasses. The non-wetting properties of graphite make it ideal for glass forming without release agents.
Q: How do graphite molds compare to tungsten carbide molds?
A: Graphite molds are much cheaper, machine easier to optical quality finishes, and provide better thermal uniformity. They are the preferred choice for precision glass molding and encapsulation applications where surface quality is critical.
Q: Can you produce custom optical lens molds with aspherical surfaces?
A: Yes, we can produce precision aspherical and freeform optical lens molds using CNC precision machining. Please provide your optical design files for feasibility review and quotation.
Hot Tags: graphite mold for glass encapsulation and optics forming, China graphite mold for glass encapsulation and optics forming manufacturers, suppliers, factory, antioxidant welding graphite block, die casting mold, graphite coin mould, graphite skull mold, pemfc bipolar plate, specialty graphite molds
