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Carbide insert nomenclature

What types of end mills are there?

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End mill for machining aluminum materials

What types of machining can end mills perform?

End mill for machining aluminum materials

time：

2025-05-08 11:04

source：

Lizhou

End mills for machining aluminum materials:

Many customers tell us: Ordinary end mills frequently stick when machining aluminum, and the accumulation of chips affects the accuracy, so they always change tools.

Lizhou editor suggests that end mills for aluminum materials are not recommended to use coated end mills. Some coatings contain aluminum elements, so it is better to choose uncoated end mills when choosing end mills for machining aluminum materials.

I. Core advantages and applicable scenarios of uncoated end mills

Cost advantage : Saves the coating process, and the price is lower than coated tools 30%-50%
Extremely sharp cutting edge : No coating interference, suitable for processing ultra-soft aluminum (such as 1050/1060 )
Fast regrinding and reuse : After wear, the cutting edge can be directly sharpened without removing the coating

Suitable working conditions ：

Short-term small-batch production

Aluminum parts trial production or prototype processing

Surface finish requirements are not high ( Ra > 1.6μm )

Recommended intelligent chip removal system in end mills:

Front end 15° Spiral angle strong chip breaking

Middle section 25° Spiral angle accelerates chip removal

End 35° Spiral angle prevents secondary scratching

II. Selection points for uncoated end mills

Key parameters	Recommended value	Function
Material	Ultra-fine grain cemented carbide (grain size ≤0.5μm )	Improve cutting edge sharpness and anti-chipping performance
Rake angle	18°-25°	Reduce cutting resistance and suppress built-up edge
Spiral angle	45°-60° (High helix)	Forced chip removal, reduce sticking
Number of blades	2 Blades (roughing) 3 Blades (finishing)	Balance cutting efficiency and surface quality

III. Why choose Lizhou cemented carbide:

Raw material control: From tungsten powder particle size to cobalt content (strictly controlled at 6%-8% )

Manufacturing strength: German Sauer Five-axis grinding machine + Swiss Agie Slow wire EDM, cutting edge runout ≤0.005mm

Scenario verification: Covers mobile phone CNC Machining, aerospace components, automotive die castings, etc. 12 Sub-fields

Recommended aluminum end mills:

The reason why aluminum end mill products do not use coatings is that they will frequently stick, so generally for aluminum material processing, uncoated or other materials that are not aluminum-coated will be chosen. ~

IV. Usage tips for uncoated end mills

1. Cooling scheme ：

Air cooling is required : Air pressure ≥6bar ，Directly blow to the cutting point

Optional cutting fluid : Water-soluble emulsion (concentration 5%-8% ), Oily liquid is prohibited (easy to stick chips)

2. Parameter optimization （With φ6mm tool as an example）:

Processing type	Speed ( RPM )	Feed ( mm/min )	Cutting depth (axial)
Roughing	15,000-20,000	1,200-1,800	0.8-1.2×D
Fine machining	20,000-25,000	600-1,000	0.1-0.3×D

3. Anti-sticking knife measures ：

Per machining 30 Minutes used WD-40 Spray cleaning blade

Fine machining uses a "high speed + low feed" strategy (such as 25,000RPM + 800mm/min )

Summary:

Aluminum end mills and milling inserts generally do not use coatings. You can also contact Lizhou Cemented Carbide for more details on aluminum milling inserts.

What is a PCD milling cutter?

What types of machining can end mills perform?