Product Overview
High-performance graphite die casting molds are widely used in aluminum and zinc alloy die casting production. With excellent thermal conductivity, non-wetting properties to molten aluminum, and high temperature strength, graphite molds provide longer die life and better surface finish compared to traditional steel molds for many die casting applications.
Key Features
- Excellent thermal conductivity for uniform cooling
- Non-wetting surface - aluminum does not stick
- High temperature strength up to 1500°C
- Easy machining and modification
- Good thermal shock resistance
- Long service life in die casting production
- Custom mold designs available
Technical Specifications
| Parameter | Unit | Value |
|---|---|---|
| Material | - | Fine-Grain Isostatic Graphite |
| Bulk Density | g/cm³ | 1.80 - 1.88 |
| Shore Hardness | - | 70 - 80 |
| Flexural Strength | MPa | 45 - 55 |
| Thermal Conductivity | W/(m·K) | 120 - 150 |
| Max Working Temp | °C | 1500 |
| Max Mold Size | mm | 500x500x300 |
Applications
- Aluminum alloy die casting
- Zinc alloy pressure casting
- Brass and bronze casting
- Automotive parts casting
- Die casting insert molds
- Gravity casting of non-ferrous metals
- Squeeze casting applications
Why Choose Jincheng Graphite Die Casting Molds?
We manufacture precision graphite die casting molds and mold components for aluminum and zinc alloy foundries. Our graphite molds are produced from high-density fine-grain graphite selected for optimal thermal conductivity and wear resistance. We work with your part drawings to produce complete mold sets or replacement mold components.
FAQ
Q: How long do graphite die casting molds last?
A: Graphite mold life depends on casting material, part complexity, casting temperature, and mold cooling. For aluminum die casting, typical mold life ranges from 5,000 to 50,000 shots depending on the application. Proper spray lubrication and mold temperature control significantly extend mold life.
Q: Can you produce complete mold sets with gating systems?
A: Yes, we can produce complete die casting mold sets including cavity, core, gating system, overflow wells, and ejector pins. Please provide your part drawings and production requirements, and our engineering team will design and manufacture the complete mold.
Q: What is the advantage of graphite over steel for die casting?
A: Graphite molds have much better thermal conductivity than steel, allowing faster cycle times. They also do not react with molten aluminum, eliminating soldering and sticking issues. Graphite is easier to machine, reducing lead times. However, graphite is more brittle and not suitable for very high pressure die casting.
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