Founding - Liquid penetrant testing - Part 2: Investment castings

This document establishes a specialized technical protocol within the field of casting metallurgy, specifically focusing on the application of liquid penetration testing methodologies. It addresses procedures utilized in scenarios where removable molds are employed during the manufacturing process. The text details the necessary steps to ensure the integrity and quality of cast components by identifying surface discontinuities that may occur during formation. It outlines specific requirements for the preparation of test specimens, the selection of appropriate penetrants, and the subsequent interpretation of indications found on the material surface. The guidelines are designed to provide a consistent framework for engineers and quality control specialists operating within the sector. By adhering to these prescribed methods, practitioners can achieve reliable results in detecting defects such as cracks or porosity that are not visible to the naked eye during initial inspection stages. The standard serves as a reference for executing non-destructive testing evaluations in accordance with established international principles, ensuring that products meet required performance and safety criteria before further processing or deployment in various industrial applications.