Carbide Square End Mill for Graphite
Suitable for slots, shoulders, pocket bottoms, side walls and flat surfaces in graphite electrodes and graphite molds.
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GRAPHITE · DIAMOND COATING · HIGH-VOLUME MACHINING
Diamond-Coated Carbide End Mills for Graphite
ZHY carbide end mills for graphite are designed for graphite electrodes, graphite molds and other abrasive non-metallic materials requiring high wear resistance, dimensional stability and consistent cutting-edge quality.
The range combines an MG carbide substrate with approximately 1.0 μm grain size, 6% cobalt content, diamond coating, a 35° helix, 6° positive rake angle, precision-polished cutting edges and optimized flute geometry.
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MG 1.0 μm Carbide
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6% Cobalt Content
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Diamond Coating
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Runout ≤ 0.003 mm
Graphite End Mill Range
Select square, ball nose or corner radius end mills according to the graphite electrode geometry, mold feature, machining operation and required surface profile.
Carbide Ball Nose End Mill for Graphite
Designed for graphite cavities, curved surfaces, inclined features, free-form profiles and three-dimensional electrode machining.
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Carbide Corner Radius End Mill for Graphite
Combines a flat-bottom profile with reinforced corner strength for graphite pockets, shoulders, contours and mold features.
Request SpecificationsWhy Graphite Requires Dedicated End Mills
Graphite is highly abrasive and produces fine dust during machining. Dedicated carbide, coating and flute geometry are required to control wear, evacuation and dimensional accuracy.
Abrasive Wear
Graphite particles rapidly wear conventional cutting edges, making substrate and coating wear resistance critical.
Fine Graphite Dust
Fine dust can accumulate in flute areas and around the cutting zone, affecting evacuation and accuracy.
Edge Chipping Risk
Graphite electrodes and detailed mold features require sharp, consistent cutting edges without chips or serrations.
Recommended Graphite Machining Applications
The range supports common graphite electrode and mold operations from rough shaping to detailed contour finishing.
01
Graphite Electrodes
EDM electrodes, ribs, slots and detailed features.
02
Graphite Molds
Cavities, pockets, walls and mold contours.
03
High-Speed Milling
Stable machining using suitable dust extraction.
04
3D Contouring
Curved surfaces, inclined features and free-form profiles.
05
Batch Production
Repetitive graphite electrode and mold manufacturing.
Technical Performance Highlights
The carbide substrate, diamond coating, polished cutting edge and precision grinding work together to support graphite wear resistance, dimensional stability and batch consistency.
MG 1.0 μm Carbide Substrate
The carbide substrate uses an approximate grain size of 1.0 μm to support high wear resistance and stable cutting performance in abrasive graphite machining.
6% Cobalt Content
The 6% cobalt content supports substrate hardness and wear resistance for graphite and other abrasive non-metallic materials.
Diamond Coating
The diamond coating provides high surface hardness, wear resistance and corrosion resistance for abrasive-material machining.
Heat Resistance up to 1000°C
The coating is designed to maintain stable performance under elevated cutting temperatures up to approximately 1000°C under suitable machining conditions.
High Thermal Conductivity
Thermal conductivity of approximately 2000 W/(m·K) helps transfer and distribute cutting heat rapidly away from localized contact areas.
35° Helix Geometry
The 35° helix supports stable cutting engagement, controlled dust movement and consistent side and contour machining.
6° Positive Rake Angle
The 6° positive rake angle supports a cleaner cutting action and helps reduce cutting resistance and stress concentration at the cutting edge.
Precision-Polished Cutting Edge
Fine edge polishing helps reduce microscopic defects and stress concentration, supporting smoother cutting and more consistent graphite surface quality.
Optimized Flute Capacity
The optimized flute structure provides sufficient evacuation space for graphite dust and helps reduce accumulation around the cutting area.
Optional Internal Air or Coolant Design
Applicable custom configurations can include internal air or coolant channels to support dust removal and temperature control according to the machining process.
Radial Runout ≤ 0.003 mm
Controlled radial runout helps improve dimensional consistency, cutting-edge load distribution and surface-machining stability.
Dimensional Tolerance Within ±0.005 mm
Tool dimensions can be controlled within approximately ±0.005 mm to support precision electrode, mold and profile machining.
Walter Five-Axis Grinding
Walter five-axis precision grinding supports stable dimensions, consistent flute geometry and repeatable cutting-edge quality.
HELICHECK PLUS Measurement
Walter HELICHECK PLUS profile measurement supports accurate inspection of tool contours, dimensions and ball or corner radius geometry.
Profile and Radius Accuracy Within 5 μm
Tool contours and R geometry can be measured and controlled within approximately 5 μm for consistent graphite profile machining.
50× Microscopic Edge Inspection
Every tool is inspected under 50× magnification to verify that the cutting edge is free from visible chipping, serration and abnormal coating defects.
Tool Life for High-Volume Graphite Machining
Diamond coating and wear-resistant carbide are intended for repetitive graphite electrode and mold production where conventional tool wear can affect size and surface consistency.
Compared with General-Purpose End Mills
- Potential tool-life improvement of 10–50 times
- Reduced abrasive flank wear
- Longer dimensional stability in batch production
- Reduced frequency of tool replacement
- Suitable for repetitive electrode machining
Compared with Uncoated Carbide Tools
- Potential tool-life improvement of 3–10 times
- Improved resistance to graphite abrasion
- More consistent cutting-edge condition
- Improved batch-to-batch size consistency
- Reduced tool consumption in high-volume production
Tool-life improvement depends on graphite grade, tool diameter, cutting parameters, tool overhang, machine rigidity, dust extraction and machining strategy. The stated ranges should be confirmed through application testing.
Recommended Workpiece Materials
This range is primarily positioned for graphite. Selected diamond-coated configurations may also be evaluated for other abrasive non-metallic and composite materials.
Graphite Electrodes
Graphite Molds
Fiber-Reinforced Composites
Engineering Plastics
Glass-Fiber Materials
Dental and Ceramic Materials
Alumina
Zirconia
Selected Optical Materials
Alumina, zirconia, ceramics, dental materials and optical materials vary significantly in hardness and brittleness. Confirm the exact material grade, machining method and tool geometry before ordering.
Available Product Options
Standard and customized graphite end mills can be supplied according to the workpiece material, electrode geometry, reach requirement and purchasing quantity.
| Tool Type | Square / Ball Nose / Corner Radius |
|---|---|
| Carbide Grade | MG Carbide |
| Carbide Grain Size | Approximately 1.0 μm |
| Cobalt Content | 6% |
| Coating | Diamond Coating |
| Heat Resistance | Up to Approximately 1000°C |
| Thermal Conductivity | Approximately 2000 W/(m·K) |
| Helix Angle | 35° |
| Rake Angle | 6° Positive Rake Angle |
| Cutting Edge | Precision-Polished Edge |
| Radial Runout | ≤ 0.003 mm |
| Dimensional Tolerance | Within Approximately ±0.005 mm |
| Profile / Radius Accuracy | Within Approximately 5 μm |
| Dust Evacuation | Optimized Flute Geometry |
| Internal Channel Option | Available for Applicable Custom Designs |
| Diameter and Length | Standard Sizes / Long Reach / Custom Dimensions |
| Marking | ZHY Logo / Customer Logo / Customer Model Number |
| Packaging | Standard Packaging / Private-Label Packaging |
Graphite End Mill Manufacturer and Supplier
ZHY supplies standard and customized diamond-coated carbide end mills for graphite to distributors, electrode manufacturers, mold companies, CNC workshops and private-label tool brands.
Wholesale Order Support
- Standard and mixed-size orders
- Square, ball nose and corner radius tools
- Samples for graphite machining tests
- Bulk quotations based on size and quantity
- Long-reach and customized dimensions
- Application review based on graphite grade
OEM and Private Label
- Customer logo laser marking
- Customer product and model numbers
- Custom labels and barcode stickers
- Plastic box and outer carton options
- Private-label packaging support
- Packaging verification before shipment
Production and Batch Quality Control
Precision grinding, profile measurement and microscopic inspection support stable dimensions, consistent cutting edges and repeatable wholesale delivery.
Carbide Material Verification
Walter Five-Axis Grinding
Radial Runout Inspection
Dimensional Tolerance Inspection
HELICHECK PLUS Measurement
Profile and Radius Inspection
50× Microscopic Edge Inspection
Final Coating and Packaging Inspection
Request a Graphite End Mill Quotation
Send us the required tool type, diameter, flute length, overall length, graphite grade, electrode or mold feature, quantity and packaging requirements. Our team will review the application and recommend a suitable configuration.
Request a Wholesale Quote