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Eddy Current Gear Inspections - Mill and Kiln Girth Gear Drives


Gear Inspections

To understand operational and production behavior of operational machinery, a robust data collection and examination process must be established. Copper State Specialties follows the ASTM Standard E2905 method for mill ring gear inspections. This method detects 100% of all gear tooth surface discontinuities, larger than 0.015 of an inch. Allows manufacturing to have a complete electronic record of all gear teeth scans for future reference. This practice will help to standardize the use of this non-destructive testing approach for large ring gear inspections.

Benefits of our Open Gear Inspection System:

  • Cleaning - has never been easier. 10m girth gears can be cleaned in less than an hour. There is no need to wipe the gear teeth down after the cleaning, saving numerous person hours.
  • Examination - E2905 is cleaner, faster, documents, and covers a larger area in less examination time and greatly improves Probability of Detection better than any other traditional Non-Destructive Testing methods today for gearing applications.
  • Results - Drastically reduces inspection time. Covers a large area in one single pass. Provides real-time mapping of the inspected region, facilitating data interpretation. Improves reliability and Probability of Detection (POD). Unlike some other inspection methods, this will size cracks accurately, and all of the data is electronically archived for future reference.

Gear Engineering

Copper State Specialties offers OEM technical support for any gear engineering requirements. For more information about service, inspection or maintenance of your gear, please call a CSS representative. 


Gear Inspections

Mill and Kiln Girth Gear Drives

Conventional surface Gear Inspections such as Magnetic Particle Testing, or Dye Penetrant rely heavily on operator interpretation. At the best, these techniques can determine whether a defect exists but are unable to provide information on defect severity. These methods are also very time consuming.

As visual interpretation is usually the method used to analyze any surface breaking anomalies, a cleaned gear is a must. To be noted, the gear teeth do not need to be wiped down by hand to remove residue as in Magnetic Particle, Liquid Penetrant or Ultrasonic. The colors and 3D imaging of the Gear method that help with visualization are absolutely invaluable in such circumstances. All of the data from these Gear Inspections provide an electronic report for future review and eliminates the need for paper files.

Purpose of Comprehensive Gear Inspections?

  • Will identify at risk components
  • Enhance the repair life cycle
  • The ability to accurately forecast demand for parts in the future
  • Could help in determining premiums charged by insurance companies
  • Controlling down time

To gain a fundamental understanding of the evolving operational and production behavior of a piece of machinery as part of an effective Condition Monitoring Program (CMP), a robust data collection process must be established. Our gear inspections include a visual representation methods, that compliment any CMP program to ensure the integrity of gearing.

The visual electronic crack detection method is used for inspecting cleaned pinion and bull gear teeth, especially in the addendum, dedendum and root areas. It is used to provide more comprehensive, accurate data and faster inspection times than current methods used today. This method detects 100% of all surface flaws in the addendum, dedendum and root of gear teeth. It also has the ability to electronically size any cracks found accurately. Specialty probes shaped to fit the geometries of various helix angles are used for pinion gear inspections.