Anodizing of Aluminum Alloy

The electrolytic oxidation of aluminum is known as anodizing, by electrolyzing suitably prepared aluminum in an acid solution (typically sulfuric or chromic acid), the surface layer of the aluminum can be converted to a coating with protective, decorative or functional properties. The coating formed is analogous to a honeycomb and will accept dyes of different […]

Read More »

NDT: PT& RT

Normally, we can provide the following NDT test for the aluminum castings. PT – Dye Penetrant Testing The dye penetrant testing can be used to locate discontinuities on material surfaces. A highly penetrating dye on the surface will enter discontinuities after a sufficient penetration time, and after removing the excess dye with a developing agent, […]

Read More »

ANSI/AA A360.0

Alloy A360 (ANSI/AA A360.0) offers higher corrosion resistance, superior strength at elevated temperatures, and somewhat better ductility, but is more difficult to cast. From Aluminumcasting-china.com, the casting made of A356 can be manufactured from the gravity die or low pressure permanent mold. Applications Typical uses. 356.0 aircraft pump parts, automotive transmission cases, aircraft fittings and […]

Read More »

NDT for Castings

What is the NDT? Nondestructive testing – NDT – use test methods to examine an object, material or system without impairing its future usefulness. Non-destructive testing is often required to verify the quality of a product or a system. Commonly used techniques are AET – Acoustic Emission Testing ART – Acoustic Resonance Testing ET – […]

Read More »

Thermal Treatment

Special mechanical properties are obtained in many alloys through accurate control of chemistry, manufacturing and heat treating. Reliable ingot producers can supply foundries with ingot and heat treating specifications designed to obtain specific mechanical properties. However, while certain mechanical properties are improved, it is at the expense of others. For example, tensile and yield strengths […]

Read More »

Alloys A380.0 and B380.0

These alloys are used for casting general purpose die castings. They have good mechanical properties and are used to make housings for lawn mowers and radio transmitters, air brake castings, gear cases and air-cooled cylinder heads. Castability—Fluidity, pressure tightness and resistance to hot cracking all are good. Machinability-Although the machinability of A380.0 and B380.0 is considered good, carbide-tripped tooling is recommended because of the alloy’s […]

Read More »

Alloy 356.0 and A356.0

Alloy 356.0 has excellent casting characteristics and has largely replaced alloy 295.0. Permanent mold castings of this alloy are used for machine tool parts, aircraft wheels and hand wheels, pump parts, tank car fittings, marine hardware, valve bodies and bridge railing parts, as well as for aileron control sectors, rudder control supports, fuselage fittings and […]

Read More »

Alloy Designations

Aluminum casting alloys in the U.S. are numbered according to a three-digit (plus decimal) system adopted by the Aluminum Assn. (AA) in 1954 and approved by the American National Standards Institute in 1957 (ANSI H35.1). The American Society for Testing and Materials (ASTM), the Society of Automotive Engineers (SAE), and the Federal and Military specifications […]

Read More »