HEAD_blu di prussia

This type of test, also called “Blueing”, aims to test the flatness of two surfaces, that is the regularity of a given surface or, more generally, of a support. This procedure uses a pigment called “Prussian blue” or “engineers blue”, which is mixed with oily materials and applied to the metal surfaces of mechanical components; two surfaces thus prepared are brought into contact and rubbed with each other. At the separation of the two, if traces of pigment are visible on some areas of the surface, this will indicate the presence and the position of points of remarks, or points at higher altitude, which will then be reworked.

The use of this mixture formed by the pigment and dissolved in the oil has some advantages:

  • Easily spread on metal surfaces;
  • Easily removable without causing damage;
  • It is ideal in lubricating surfaces, reducing friction.
  • If the tested surface is homogeneously colored in its entirety, it is perfectly flat; it’s important to always apply constant and evenly distributed pressure throughout the piece, otherwise the result of these tests could be distorted.

For info and quotes contact the commercial area

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