Description
Product Overview
This diamond-coated carbide square end mill is designed for
slotting, side milling, shoulder machining, flat-bottom pockets
and precision machining of graphite electrodes and graphite molds.
It combines an MG carbide substrate with an approximate grain size
of 1.0 μm, 6% cobalt content, diamond coating, a 35° helix,
a 6° positive rake angle and precision-polished cutting edges
to improve wear resistance, dust evacuation and dimensional stability.
Recommended Machining Applications
The square cutting profile supports graphite features requiring
flat bottoms, straight walls, controlled dimensions and stable
machining of highly abrasive material.
Graphite Electrode Milling
Suitable for EDM electrodes, ribs, slots, flat surfaces
and detailed electrode features.
Graphite Mold Machining
Designed for mold pockets, side walls, shoulders
and flat-bottom graphite features.
Slot and Side Milling
Supports slots, straight profiles and peripheral
machining with controlled graphite dust evacuation.
Batch Graphite Production
Suitable for repetitive electrode and mold production
requiring stable tool dimensions and cutting-edge condition.
Designed for Graphite Machining Challenges
Graphite is highly abrasive and generates large amounts of fine dust.
The carbide substrate, diamond coating and optimized flute structure
are designed to control wear, dust evacuation and machining accuracy.
Wear and Edge Protection
- Diamond coating resists abrasive graphite particles
- MG carbide supports stable substrate hardness
- 6% cobalt content supports wear resistance
- Polished edges reduce microscopic stress concentration
- 50× inspection verifies edge condition
- Suitable for repetitive graphite production
Dust and Accuracy Control
- Optimized flute geometry improves dust evacuation
- 35° helix supports stable graphite particle flow
- 6° positive rake reduces cutting resistance
- Runout is controlled within 0.003 mm
- Dimensional tolerance is controlled within ±0.005 mm
- Effective dust extraction is recommended
Square End Mill Geometry and Cutting Performance
The wear-resistant carbide, diamond coating, polished cutting edge
and precision grinding work together to support graphite machining
accuracy and repeatable batch performance.
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
can 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.
35° Helix Geometry
The 35° helix supports stable cutting engagement,
controlled graphite dust movement and consistent
side and slot machining.
6° Positive Rake Angle
The positive rake angle supports cleaner cutting
and helps reduce cutting resistance and stress
concentration at the cutting edge.
Flat-Bottom Cutting Profile
The square-end geometry supports slots, shoulders,
pocket bottoms and planar graphite features requiring
a flat cutting profile.
Precision-Polished Cutting Edge
Fine edge polishing helps reduce microscopic defects
and stress concentration, supporting smoother cutting
and 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 or Coolant Channels
Applicable customized specifications can include internal
air or coolant channels to support dust evacuation
and temperature control.
Radial Runout ≤ 0.003 mm
Controlled radial runout improves cutting-edge load
distribution, dimensional consistency and machining
stability during precision graphite milling.
Dimensional Tolerance Within ±0.005 mm
Tool dimensions are controlled within approximately
±0.005 mm to support precision electrode, mold,
pocket and profile machining.
Walter Five-Axis Grinding
Walter five-axis precision grinding supports stable
dimensions, consistent flute geometry and repeatable
square-end cutting edges.
HELICHECK PLUS Measurement
Walter HELICHECK PLUS profile measurement supports
accurate inspection of tool dimensions, cutting
geometry and flute profiles.
Profile Accuracy Within 5 μm
Tool contours and cutting profiles can be measured
and controlled within approximately 5 μm for stable
precision graphite 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.
Extended Tool Life in Graphite Machining
Diamond coating and wear-resistant carbide are intended for
high-volume graphite production where abrasive wear can affect
dimensions, surface quality and tool replacement frequency.
Compared with General-Purpose End Mills
- Potential tool-life improvement of 10–50 times
- Reduced abrasive flank wear
- Longer dimensional 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 batch machining stability
- Reduced tool consumption
Actual tool life depends on graphite grade, cutting parameters,
tool diameter, tool overhang, machine rigidity, dust extraction
and machining strategy. Application testing is recommended.
Standard Graphite Square End Mill Sizes
Standard metric sizes, long-reach tools and customized dimensions
are available for graphite electrode machining, mold production
and wholesale supply.
| Tool Diameter | Standard Metric Sizes / Custom Diameter |
|---|---|
| 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, 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 square end mills
can be supplied according to the graphite grade, electrode feature,
machining depth and purchasing requirements.
| Tool Type | Carbide Square 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 |
| Profile Accuracy | Within Approximately 5 μm |
| Dust Evacuation | Optimized Flute Geometry |
| Internal Channel Option | Available for Applicable Custom Designs |
| Main Operations |
Slotting / Side Milling / Shoulder Machining / Pocket Machining / Flat-Surface Milling |
| 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 square end mill is primarily positioned for
graphite electrodes and graphite molds. Selected configurations
may also be evaluated for other abrasive non-metallic materials.
Wholesale and OEM Support
ZHY supplies standard and customized diamond-coated carbide
square end mills for distributors, graphite electrode manufacturers,
mold companies, CNC workshops and private-label tool brands.
Wholesale Order Support
- Standard and mixed-size orders
- 4-flute and customized configurations
- 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 batch delivery.
Request a Graphite Square End Mill Quotation
Send us the required diameter, 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.
