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|
- ---
- author:
- - 'Gerardo M. Chávez-Campos; Oscar D. Prieto; Enrique Reyes-Archundia;
- Héctor Javier-Vergara; Octavio Vázquez-Gómez; José A.
- Gutiérrez-Gnecchi'
- bibliography:
- - referenciasProtocoloPhD.bib
- title: A new Approach to Measuring the Decarburization Depth using an
- Image Segmentation Plugin
- ---
-
- Introduction
- ============
-
- Now a days, the high-temperature steel products are crucial for
- automotive, energy and aviation industries [@Lu2018]. This products
- improve their final properties through a reheating operation [@Ta2018].
- The reheating operation is typically done on direct-fired furnaces where
- steelworks gases are combusted with excess air
- [@Young2016; @Korousic1996; @Gouveia2013].
-
- The high-temperature, gas atmosphere and steel's chemistry lead to
- oxidation and decarburization of the steel
- [@Gouveia2013; @Tao2014; @Young2016]. Specifically, the decarburization
- is defined as the diffusion mechanism of the metal's carbon from the
- inner to outer zone replacing the lost carbon during the redox
- [@Young2016]; however, the decarburization becomes greater at
- high-temperature [@Gouveia2013]. Therefore, a none controlled reheating
- operation will produce material losses and depreciation on product
- quality [@Liu2018Numerical]. Then, a common way to establish the final
- product quality is by measuring the coating or decarburated layer
- [@Liu2018Numerical; @Alvarenga2015; @Zhao2016a]. This has be done by
- several methods and systems mainly validated by optical microscope (OM)
- techniques [@Tao2014; @Suarez2008; @Zhao2016a]. Nevertheless, the
- optical measurement-data were only based in few representative data; no
- more than five measurements [@Chen2020].
-
- The E1077-01 "Standard Test Methods for Estimating the Depth of
- Decarburization of Steel Specimens". Proposes to make a number of random
- measurements around the specimen periphery, at randomly selected
- locations. If statistical precision is required, it suggests considering
- 95% of confident limits, mean and standard deviation; letting the number
- of measurements open, according to the desired accuracy. Thus, the
- present paper introduces a new approach to measure the decarburization
- depth based on image processing analysis.
-
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