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Non Destructive Testing (NDT)

Non Destructive Testing (NDT)

At Superior, we are proud to hold a reputation for going above and beyond what is expected in order to provide our customers with top-quality service. In a highly competitive industry, we consistently prove ourselves as the first-choice thread rolling and precision machining through our continual innovation and meticulous quality control process. This committed quality process includes non-destructive testing, or NDT, which is not a stand alone service, but an added testing process Superior uses for our customers’ orders.

What is Non-Destructive Testing?

Non-destructive testing, or NDT, is an industry-standard testing method to evaluate the properties of a component, testing for differences or defects without causing damage to the original part.

NADCAP Standards for Non-Destructive Testing

The overarching quality standards set for Non-Destructive Testing are included within NADCAP certification. STR is proud to not only hold NADCAP certification, but to have earned merit with the certification organization. Merit is achieved after accomplishing three consecutive inspections with fewer than three quality concern findings. Earning merit is considered very impressive for the thread rolling industry, but for STR it is simply the result of our highly efficient quality assurance programs.

Difference Between Magnetic Particle Inspection And Liquid Penetrant Inspection

During the liquid penetrant inspection process a testing fluid is injected into the surface-breaking crack, or crest seam, and eventually removed using a specialized powder. This process is advantageous because it provides a more thorough inspection than visual tests, yet is still a relatively inexpensive inspection method. By employing liquid penetrant testing, critical flaws or structural cracks can be exposed before products are finalized, ensuring no faulty products are sent to our customers.

The Magnetic Particle Inspection process, on the other hand, locates potential deformities using magnetic fields. This process is highly efficient and is advantageous for materials, such as iron, nickel, cobalt, and other ferromagnetic alloys. After the part has been inspected through this process, there is a demagnetization that must be performed before any further value-added services can begin.

Non-Destructive Testing Standards

  • Boeing – BAC 5423 Penetrant Methods of Inspection
  • Boeing – BAC 5424 Magnetic Particle Inspection
  • Boeing – BSS 7039 Liquid Penetrant Inspection
  • Boeing – BSS 7040 Magnetic Particle Inspection
  • Bell – BPS 4075 Magnetic Particle Inspection
  • Bell – BPS 4089 Fluorescent Penetrant Inspection
  • Bombardier – BAPS 176-002 (Limited to Type I, Method A) Fluorescent Penetrant Inspection
  • Bombardier – BAPS 176-004 Magnetic Particle Inspection
  • NADCAP – ASTM-E-1417 Liquid Penetrant Inspection
  • NADCAP – ASTM-E-1444 Magnetic Particle Inspection

Superior Thread Rolling: Commitment to Meeting the Industry Standards for Quality

STR provides and maintains sufficient gauges and testing devices as your dedicated NDT service provider. These devices are accurate to ensure product compliance. Furthermore, our team calibrates our inspection equipment at regular intervals, following the certified national standards. These calibration standards include ANSI (NCSL) Z540-1 and ISO 10012.