IS 7743 : 2006 Recommended Practice for Magnetic Particle Testing and Inspection of Steel Forgings

1 Scope

1.1 This standard describes the procedure for magnetic particle testing andinspection of ferromagnetic steel forgings.

1.2 Magnetic particle testing provides for the detection of cracks and other discontintrities situated at or near the surface in ferromagnetic materials. The sensitivity of the test is maximum for surfacediscontinuities and diminishes rapidly with depth below the surface.

1.3 This standard does not stipulate any requirement for the acceptance or rejection of forgings on which flaws have been revealed. This shall be subject to mutual agreement between the contracting parties.This agreement may include the following

a) A statement specifying that the forgings shall be subjected to magnetic particle testing and inspection in accordance with the standard together with any additional requirements considered necessary;

b) Locations on the forgings which are subjected to magnetic particle testing and inspection;

c) Stage of manufacture at which the test is to be conducted, the technique to be used and the magnetizing field or current strength to be employed;

d) Type of discontinuities to be considered undesirable; and

e) Total length of linear discontinuities in unit area shall-be reported.

2 References

The following standards contain provisions which through reference in this text, constitute provisions of this standard.At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreementsbased on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below: