Description
Product Overview
This diamond-coated carbide corner radius end mill is designed
for graphite pockets, shoulders, side walls, cavity bottoms,
contour milling and controlled semi-finishing of graphite
electrodes and graphite molds.
The reinforced corner radius improves cutting-edge strength
compared with a sharp square corner while retaining a flat-bottom
cutting profile. An MG carbide substrate, diamond coating,
35° helix, 6° positive rake angle and precision-polished
cutting edges support wear resistance, dust evacuation
and dimensional stability.
Recommended Machining Applications
The combination of a flat-bottom cutting profile and reinforced
corner radius supports graphite features requiring edge strength,
dimensional control and a defined transition between the bottom
and side wall.
Graphite Pocket Machining
Suitable for graphite pockets, recessed features
and cavity bottoms requiring a controlled corner radius.
Shoulder and Side Milling
Designed for graphite walls, shoulders and peripheral
profiles requiring improved corner-edge strength.
Graphite Mold Features
Supports mold pockets, bottom transitions, internal
profiles and reinforced-radius graphite features.
Contour Semi-Finishing
Suitable for controlled stock removal along graphite
electrode profiles, mold contours and transition areas.
Designed for Graphite Machining Challenges
Graphite is highly abrasive and produces fine dust during cutting.
The carbide substrate, diamond coating, reinforced radius and
optimized flute geometry are designed to control wear, dust
evacuation and corner-profile accuracy.
Wear and Corner Protection
- Diamond coating resists abrasive graphite particles
- Reinforced radius reduces tip stress concentration
- MG carbide supports stable substrate hardness
- 6% cobalt content supports wear resistance
- Polished edges reduce microscopic edge defects
- Suitable for repetitive graphite production
Dust and Accuracy Control
- Optimized flute space supports dust evacuation
- 35° helix assists graphite-particle movement
- 6° positive rake reduces cutting resistance
- Corner radius is controlled within approximately 5 μm
- Radial runout is controlled within 0.003 mm
- Effective dust extraction is recommended
Corner Radius Geometry and Cutting Performance
The wear-resistant carbide, diamond coating, reinforced corner
radius, polished cutting edge and precision grinding work together
to support stable graphite pocket and contour machining.
MG 1.0 μm Carbide Substrate
The MG carbide substrate uses an approximate grain size
of 1.0 μm to provide high wear resistance and stable
cutting performance in abrasive graphite machining.
6% Cobalt Content
The 6% cobalt content supports carbide hardness
and resistance to abrasive wear during graphite
electrode and graphite mold machining.
Diamond Coating
The diamond coating provides high surface hardness,
wear resistance and corrosion resistance for graphite
and other abrasive non-metallic materials.
Wear Resistance 5–10 Times Higher
Under suitable machining conditions, the diamond
coating may provide approximately five to ten times
the wear resistance of conventional tool coatings.
Heat Resistance up to 1000°C
The coating is designed to maintain stable performance
at elevated 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 localized cutting heat
away from the tool-contact area.
Reinforced Corner Radius
The corner radius reduces stress concentration at the
cutting tip and improves edge strength compared with
a sharp square-end corner.
Flat-Bottom Cutting Profile
The flat-bottom geometry supports graphite pockets,
shoulders and planar features while retaining a
controlled transition radius.
35° Helix Geometry
The 35° helix supports stable cutting engagement,
controlled graphite-dust movement and consistent
side and contour machining.
6° Positive Rake Angle
The positive rake angle supports cleaner cutting
and helps reduce cutting resistance and stress
concentration at the cutting edge.
Precision-Polished Cutting Edge
Fine edge polishing helps reduce microscopic defects
and supports smoother cutting and more consistent
graphite surface quality.
Optimized Dust-Evacuation Flutes
The optimized flute structure provides sufficient
space for fine graphite particles and helps reduce
dust accumulation around the cutting area.
Optional Internal Air Channel
Applicable customized specifications can include
internal air channels to support graphite-dust
evacuation and temperature control.
Radial Runout ≤ 0.003 mm
Controlled radial runout improves cutting-edge load
distribution, corner-profile consistency and
machining stability.
Dimensional Tolerance Within ±0.005 mm
Tool dimensions are controlled within approximately
±0.005 mm to support precision electrode, mold,
pocket and contour machining.
Corner Radius Accuracy Within 5 μm
Precision grinding and profile inspection help control
the corner radius within approximately 5 μm for
repeatable pockets, shoulders and transition features.
Walter Five-Axis Grinding
Walter five-axis precision grinding supports stable
dimensions, corner-radius accuracy and repeatable
cutting-edge geometry.
HELICHECK PLUS Measurement
Walter HELICHECK PLUS profile measurement supports
accurate inspection of tool dimensions, corner radius
and cutting geometry.
50× Microscopic Edge Inspection
Every tool is inspected under 50× magnification
to verify that the cutting edge is free from visible
chipping, serrations and abnormal coating defects.
Batch Geometry Consistency
Precision grinding and multi-stage inspection support
consistent dimensions, cutting-edge condition and
repeatable wholesale batch delivery.
Extended Tool Life in Graphite Machining
Diamond coating and wear-resistant carbide are intended for
high-volume graphite production where abrasive wear can affect
corner-radius accuracy, dimensions and surface consistency.
Compared with General-Purpose End Mills
- Potential tool-life improvement of 10–50 times
- Reduced abrasive flank wear
- Longer corner-radius stability
- Reduced frequency of tool replacement
- Suitable for batch electrode production
Compared with Uncoated Carbide Tools
- Potential tool-life improvement of 3–10 times
- Improved resistance to graphite abrasion
- More consistent cutting-edge condition
- Improved pocket and contour stability
- Reduced tool consumption
Actual tool life depends on graphite grade, cutting parameters,
tool diameter, corner radius, tool overhang, machine rigidity,
dust extraction and machining strategy. Application testing
is recommended.
Standard Graphite Corner Radius End Mill Sizes
Standard metric sizes, standard corner radii, long-reach tools
and customized dimensions are available for graphite electrode
machining, mold production and wholesale supply.
| Tool Diameter | Standard Metric Sizes / Custom Diameter |
|---|---|
| Corner Radius | Standard Radius / Custom Radius |
| Flute Length | Standard / Long Reach / Custom |
| Neck Length | Standard / Extended / Custom |
| Shank Diameter | Standard Shank / Custom Shank |
| Overall Length | Standard / Extended Length / Custom |
| Flute Options | 4 Flutes / Custom |
Send us the required diameter, corner radius, flute length,
neck length, shank diameter, overall length, graphite grade
and order quantity to receive the current size list
and quotation.
Available Configurations
Standard and customized diamond-coated carbide corner radius
end mills can be supplied according to the graphite grade,
required radius, machining feature and reach requirement.
| Tool Type | Carbide Corner Radius End Mill for Graphite |
|---|---|
| Flute Options | 4 Flutes / Custom |
| 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 |
| Corner Radius Accuracy | Within Approximately 5 μm |
| Dust Evacuation | Optimized Flute Geometry |
| Internal Air Option | Available for Applicable Custom Designs |
| Main Operations |
Pocket Machining / Side Milling / Shoulder Machining / Contour Milling / Semi-Finishing |
| Diameter and Length |
Standard Sizes / Long Reach / Custom Dimensions |
| Marking |
ZHY Logo / Customer Logo / Customer Model Number |
| Packaging |
Standard Packaging / Private-Label Packaging |
Recommended Workpiece Materials
This carbide corner radius end mill is primarily positioned
for graphite electrodes, graphite molds, pockets, shoulders
and controlled-radius graphite features.
Wholesale and OEM Support
ZHY supplies standard and customized diamond-coated carbide
corner radius end mills for distributors, graphite electrode
manufacturers, mold companies, CNC workshops and
private-label tool brands.
Wholesale Order Support
- Standard and mixed-size orders
- Standard and customized corner radii
- 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 Corner Radius Inspection
Precision grinding, profile measurement and microscopic
inspection support consistent corner geometry, cutting-edge
quality and repeatable batch delivery.
Request a Graphite Corner Radius End Mill Quotation
Send us the required diameter, corner radius, flute length,
overall length, graphite grade, electrode or mold feature,
quantity and packaging requirements. Our team will review
the application and provide a suitable quotation.
