Testing and NDT

Howco has the utmost confidence in its manufacturing capabilities and believes in putting them to the test. With wide-ranging testing facilities at locations around the world, our qualified inspectors conduct mechanical, metallurgical and non-destructive testing using the latest equipment and techniques.

Metallurgical Tests

  • Grain Size
  • Ferrite Count
  • Cleanness Test
  • Corrosion Test
  • Micro Examination
  • Macro Examination

Mechanical Tests

  • Tensile
  • Impact
  • Hardness

Welding Tests

  • Bend : Fillet weld fracture : Hardness : Impact : Nick-break tensile
  • Macro examination in accordance with specific welding codes.

Non Destructive Tests

Magnetic Particle Inspection (MPI)

mpi-testingMagnetic Particle Inspection (MPI), also sometimes called Magnetic Test (MT) is a non-destructive test method for the detection of surface and sub-surface discontinuities in ferrous materials.

The test method involves the application of a magnetic field externally or applying an electric current through the material which in turn produces magnetic flux. Simultaneously, visible ferrous particles are sprinkled or sprayed on the test surface.

The presence of a surface or near surface discontinuity in the material causes distortion in the magnetic flux which in turn causes leakage of the magnetic fields. The magnetic particles are attracted by the surface field in the test area and adhere to the edges.

Dye Penetrant Inspection (DPI)

dpi-testingDye Penetrant Inspection (DPI), also called Liquid Penetrant Inspection (LPI) or Penetrant Test (PT), is a fast, economical and widely used non-destructive test method to detect surface-breaking discontinuities in all non-porous materials (metals, plastics, or ceramics).

A penetrant test is based upon the principles of capillary action where liquid penetrates into a cavity. It is performed by cleaning the test surface thoroughly, applying a coloured or fluorescent penetrant, allowing penetration time, removal of excess penetrant followed by application of developer ( dry or liquid form). The developer assists to draw penetrant out from the surface breaking discontinuities. After developer dwelling, the test surface is examined for bleed out under natural light or black (UV) light (depending on the type of penetrant).

Fluorescent Dye Penetrant Inspection (FDPI) is the most sensitive test method.

Positive Material Identification (PMI)

pmi-testingPositive Material Identification (PMI) enables a components material grade or chemical analysis to be found.PMI is one of the more specialized non - destructive testing methods. With Positive Material Identification the alloy composition of materials can be determined. If a material certificate is not available then PMI can be used to validate the material certification.

PMI is particularly used for high-quality metals like Stainless Steel and High Alloy Metals. While engineers push the boundaries of material capacities to their limits in the design, assurance that the correct material is used becomes even more important.