The Reese Hardening Plants
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    Service project for burning test
       Temper etching in nital for sure verification of burning
    The service project 'Burning Test' initiated at the end of 1999 by the Reese hardening plants is now being used by a great number of gear manufacturers, for this test is stipulated by the mean quality requirement under DIN 3990 / Part V (calculations for load bearing spur gears). When performing and documenting the test, the Reese hardening plant follows the specifications under ISO EN 14104 as well as the US standard ANSI/AGMA 2007-B92.
   
Temper etching in nital for sure verification
Temper etching in nital is considered a sure means for visualizing damage caused by burning. Here, sampling tests have proved to be an economically feasible quality assurance measure. The figure shows how burning as the cause of damage can be made visible. Temper etching in nital gives a dark colour to the affected areas.

For components with max diameters of 1200 mm
The Reese hardening plants offer their customers the burning test because investments in expensive plant technology prove uneconomical for many companies and a high level of knowhow is needed to evaluate and classify the test results. In Bochum a test system has been installed for investigating components up to 1200 mm in diameter.

 

Fig.: The test visualizes burning as the cause of damage - here an instance of damage analysis. Conducting this test in the early stages could have avoided this damage.

    The logistics of a hardening plant supported by its own motor pool are tailored to ensuring quality assurance measures for the current production as well as the tests for damage on individual components. In addition, many gear manufacturers use the burning test service to optimize the settings for their grinding machines.
     
     
     
   

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