Precision Casting Alluminum Parts are made of aluminum alloy, which is an material filled with molten metal to obtain various shapes of blank parts.It has the advantages of low density, high specific strength, good corrosion resistance and casting process, and small limitation of part structural design.It is divided into medium strength alloys based on Al-Si and Al-Si-Mg-Cu; high strength alloy based on Al-Cu; corrosion resistant alloy based on Al-Mg; and thermal strong alloy based on Al-Re. Most require heat treatment to reinforce alloys, eliminate stresses in the castings, stabilize tissue and part dimensions. They are mainly used to beams, steam turbine blades, pump body, hanger, hub, inlet lips, engine magazines, etc. and Also used to manufacture automotive cylinder heads, gearbox and pistons, instrument housing and supercharger pumps.
Features
1. The density of Precision Casting Alluminum Parts is smaller than that of iron castings, while the specific strength is higher. Therefore, under the same load conditions, the product is more durable, so it is often used in the aviation industry and machinery manufacturing industry.
2. The product has good surface luster and corrosion resistance, so it has a wide range of applications in the civil utensils manufacturing industry.
3. The product shows good corrosion resistance in some oxidizing acid media, so it also has a certain use in the chemical industry.
4. Its thermal conductivity is very good, and it is suitable for cylinder head and piston of internal combustion engine.
Chemical composition:
Si: 6.50-7.50
Mg: 0.45-0.60
Ti: 0.10-0.20
Al: Blance
Fe: ≤0.20
Mn: ≤0.10
Ti+Zr: ≤0.20
Sn: ≤0.01
Pb: ≤0.03
Tensile Strength: σb≥290MPa
Extensibility: δ5 ≥2%
Hardness： ≥85HB
Specification of heat treatment：
Solution treatment --- Rising the temperature to 535±5℃,keeping 10～14h; wate cooling.
Aging treatment---: Rising the temperature to 160±5℃, keeping 4～8h, then cooling in air。
