EDM Graphite Block for Mold Making
Product Overview
Jincheng EDM graphite blocks are high-quality, fine-grain graphite materials specifically formulated for electrical discharge machining (EDM) applications in mold and die making. These blocks provide excellent machinability, uniform erosion, and high material removal rates for precision mold manufacturing.
Our EDM graphite blocks are available in various grades and sizes to match different EDM machines and mold requirements. From economical general-purpose grades to premium fine-grain grades for high-precision applications, we have the right graphite for your EDM needs.
Key Features
- Excellent EDM machinability for fast material removal and fine surface finish
- Uniform grain structure for consistent erosion and predictable wear
- High machinability for easy milling and grinding of complex electrode shapes
- Low electrode wear for accurate mold details and tight tolerances
- Good surface finish for reducing secondary polishing operations
- Various grades available from economical to high-precision
- Standard and custom sizes to fit different EDM machine envelopes
- Consistent quality with batch-to-batch property uniformity
Technical Specifications
| Parameter | Value |
|---|---|
| Material | Fine grain isostatic molded graphite |
| Density | 1.70 - 1.85 g/cm3 |
| Grain Size | 5 - 20 microns (grade dependent) |
| Shore Hardness | 55 - 75 HS |
| Flexural Strength | 40 - 70 MPa |
| Electrical Resistivity | 9 - 15 uOhm·m |
| Compressive Strength | 70 - 120 MPa |
| Block Size | Up to 400 x 400 x 1000 mm (custom) |
| Surface Finish | Sawn, ground, or precision machined |
| Tolerance | ±0.1 mm (standard), ±0.02 mm (precision) |
Applications
- Injection mold manufacturing for plastic injection molding dies
- Die casting mold making for aluminum and zinc die casting dies
- Stamping die manufacturing for progressive dies and blanking dies
- EDM electrode fabrication for sinker EDM and wire EDM operations
- Precision mold making for optical and medical component molds
- Rapid prototyping for quick mold insert production
Why Choose Jincheng EDM Graphite Blocks?
- Various EDM grades to match different mold making requirements and budgets
- Competitive pricing compared to imported EDM graphite brands
- Fast delivery - standard sizes from stock, custom sizes within 1 week
- Precision machining services for finished EDM electrodes per your drawings
- Technical support for graphite grade selection and EDM parameter optimization
- Consistent quality with strict batch-to-batch quality control
- Global shipping to mold shops and EDM service centers worldwide
- Long-term supply with stable production capacity for your ongoing needs
Frequently Asked Questions
Q1: What EDM graphite grade should I choose for my application?
A: Grade selection depends on your surface finish requirements, accuracy needs, and budget. For general-purpose mold making, medium-grain graphite works well. For high-precision and fine surface finish applications, fine-grain isostatic graphite is recommended. Contact us for grade selection advice.
Q2: How does EDM graphite compare to copper electrodes?
A: Graphite electrodes are much easier to machine, have faster material removal rates, and lower wear compared to copper. Graphite is also lighter and easier to handle for large electrodes.
Q3: What sizes do you offer?
A: We offer standard block sizes up to 400 x 400 x 1000 mm, and can also machine custom sizes and shapes per your drawings.
Q4: Do you provide finished EDM electrodes?
A: Yes, we offer precision CNC machining services to produce finished EDM electrodes based on your CAD drawings. Please provide your electrode drawings for quotation.
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