heat treatment

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Heat treatment is an elaborate process and the process is simply explained

Updated: May 26, 2020

Many castings are used in the as-cast condition, but certain applications require higher mechanical properties than the as-cast material. Most of the gravity die casting and sand casting alloys can be heat treated. Pressure die casted components can seldom be heat treated. The purposes of heat treatment are as follows:

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Hard Anodizing in Aluminium Casting

Updated: June 30, 2020

Aluminium has strong affinity to oxygen and formation of a compact oxide layer onto its surface exhibits high corrosion resistance in air and water solutions.

The anodizing is an electrolytic process, the aluminium casting immersed in the electrolyte (usually acids e.g. sulphuric, ortho phosphoric and oxalic), is the anode. The cathode is made of aluminium alloy, lead or stainless steel.

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Radiographic Testing of Aluminium Casting

Updated: August 25, 2020

Radiographic Testing (RT) is a volumetric non-destructive evaluation (NDE) technique that helps to detect internal defects in castings, welds etc., which could not be detected by other NDE techniques like fluorescent penetrant, magnetic particle testing.

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Helium Leak Testing

Updated: October 05, 2020

Using Helium to check leak in parts is highly effective compared to leak testing using normal atmospheric air. Helium Leak Testing is a type of non-destructive quality control testing of manufactured parts to ensure fluids do not leak into or out of the part. Depending on the material of the part and the criticality of the application of the part, leak rates to the extent of 1×10-12mbar.l.sec -1 need to be detected and measured.

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