Aluminium | HONSCN

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Karakteristik material aluminium pemesinan CNC

Efisiensi Tinggi: Resistensi pemotongan rendah, kecepatan umpan hingga 3-5 kali lipat dari baja.
Kualitas permukaan yang sangat baik: Efek cermin RA0.4-1.6μm yang mudah dicapai.
Keausan alat rendah: kekerasan HB60-150, memperpanjang masa pakai pahat lebih dari 30%.
Konduktivitas termal yang baik: disipasi panas cepat selama pemrosesan, mengurangi deformasi termal.
Resistensi korosi yang kuat: Perlindungan film oksida alami, cocok untuk lingkungan yang lembab.
Efektivitas biaya tinggi: kepadatan 2.7g/cm³, hanya 1/3 baja.

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Commonly used aluminum material classification table

Grade	Heat treatment status	Tensile strength (MPa)	Yield strength (MPa)	Main characteristics	Application scenarios
6061-T6	T6	276	241	Comprehensive performance excellence, easy to weld	Suitable for medium strength structural components, priority choice when welding is required
5052-H32	H32	275	215	Saltwater corrosion resistance, high ductility	First choice for marine equipment, suitable for components requiring cold working forming
7075-T6	T6	572	503	Ultra-high strength, anti-fatigue	High load structural components, but need to be used with surface treatment
2024-T3	T3	483	324	High strength easy to machine	Aircraft structural components and high strength components requiring rapid machining
3003-H14	H14	165	145	Good formability, atmospheric corrosion resistance	Architectural decorative components, scenes with high surface quality requirements
6063-T5	T5	215	170	High surface smoothness	Door and window profiles and decorative components, need surface treatment to enhance corrosion resistance

Analysis of aluminum material properties:

✔ Thermal treatment impact: T6 state (solution + artificial aging) significantly improves strength, but reduces ductility; H32 (cold working + stabilization treatment) maintains good ductility.
✔ Machining parameter differences: 7075 cutting speed recommended ≤80m/min (6061 can reach 150m/min), need to use tungsten carbide tools.
✔ Welding attention: 5052 recommended to use AC TIG welding, 6061 needs heat treatment after welding to restore strength.
✔ Surface treatment compatibility: 2024 anodizing effect is the best, 7075 is recommended to first electroless nickel plating and then surface treatment.

Material selection strategy:

✔ Strength priority: 7075 > 2024 > 6061✔ Corrosion resistance: 5052 > 3003 > 6061
✔ Machining efficiency: 6063 > 3003 > 7075
✔ Comprehensive cost: 6061 has the highest cost-effectiveness, 7075 material cost is 2-3 times that of 6061

Aluminum material surface treatment process

◆ Anodizing: generates 5-25μm oxide film, improves corrosion resistance and wear resistance, commonly silver white/black.

◆ Powder coating: electrostatic adsorption process, film thickness 60-100μm, provides multiple color options.

◆ Hard anodizing: film thickness up to 250μm, HV300-500, used for wear-resistant components.

◆ Brushed finish: mechanical brushing forms a matte effect, enhances decorativeness.

◆ Electroless nickel plating: deposits 10-25μm nickel layer, improves hardness and corrosion resistance.

◆ Electrophoretic coating: uniform and dense paint film, suitable for humid environments such as bathroom hardware.

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