What does PI stand for?

Post Inoculation

This definition appears very rarely and is found in the following Acronym Finder categories:

Science, medicine, engineering, etc.

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Samples in periodicals archive:

The late Post inoculation were carried out by M/s Elken AS, Norway made Ba-based inoculent the treated Liquid Metal also poured ASTM-Specified ''Y'' Block for the test piece attached with the casting as intregral test Bar.

A Case Study for Predicted Mechanical Properties of Ductile Iron ...

Some foundries believe it isn't critical to check for nucleation potential in the base iron because they use post inoculation, and post inoculations' only purpose is nucleation, However, if the base iron does not possess enough nucleation potential, then post inoculation will not have anything to enhance, resulting in low nodule count.

Resurrecting chill wedges for ductile iron production: often ...

Expanded Post Inoculation Use Every foundry surveyed indicated that it uses post-inoculation, a significant jump from 1988 when 42% of large foundries indicated that they did not use the process.

Ductile iron trends: reducing costs, improving quality

Post inoculation was accomplished in mold using a semi-sintered FeSi block inserted at the bottom of the downsprue.

Ductile iron stays in spotlight