Mössbauer and SEM characterisation of the scale on type 304 stainless steel

Waanders, F.B.; Vorster, S. W.; Engelbrecht, A.

doi:10.1016/s1359-6462(00)00322-5

Cited by 7 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In all these processes the steel surface oxidizes appearing layers of iron oxides (external layers) and iron-chromium oxides (internal layers). They have to be eliminated in a subsequent pickling process [2]- [4] by submitting the coil surface to mechanical treatment with grain blasting and wire brush and also to chemical treatment by submerging it in hydrofluoric and sulphuric acid tanks which eliminate the oxide layer and regenerate the passive layer, Cr2O3, of stainless steel [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

Image processing for surface quality control in stainless steel production lines

Spinola

Cañero-Nieto

Martín‐Vázquez

et al. 2010

2010 IEEE International Conference on Imaging Systems and Techniques

View full text Add to dashboard Cite

In this paper we present an image processing algorithm to detect and measure the amount of residual oxide remaining on the surface of stainless steel coils for quality control in a production line. This algorithm processes in real time the images taken by the acquisition system which we have designed for this purpose and which has been installed in the finish line of a stainless steel production factory. We present here a more robust and reliable algorithm than the initial one, which has been adapted to deal with non-ideal conditions such as nonperfect homogeneous lighting, different surface finish, water marks, etc., which usually occur in practice.

show abstract

Section: Introductionmentioning

confidence: 99%

Image processing for surface quality control in stainless steel production lines

Spinola

Cañero-Nieto

Martín‐Vázquez

et al. 2010

2010 IEEE International Conference on Imaging Systems and Techniques

View full text Add to dashboard Cite

show abstract

Non-destructive, Contactless and Real-Time Capable Determination of the α’-Martensite Content in Modified Subsurfaces of AISI 304

et al. 2022

View full text Add to dashboard Cite

Cryogenic turning can be used to produce deformation-induced martensite in metastable austenitic steels. Martensite exhibits a higher hardness than austenite and increases the wear resistance of the workpiece. In order to reliably induce a desired martensite content in the subsurface zone during the turning process, a non-destructive, contactless and real-time testing method is necessary. Eddy current testing is an electromagnetic method that is non-destructive, non-contact and real-time capable. Furthermore, eddy current testing has been integrated into production processes many times. Eddy current testing can be used to detect the transformation of paramagnetic austenite to ferromagnetic α′-martensite based on the change in magnetic and electrical properties. Thus, the newly formed subsurface can be characterized and the manufacturing process can be monitored. The objective of this study was to understand the correlation of eddy current testing signals with newly formed α′-martensite in the subsurface of AISI 304 and to quantify the amount formed. The measurements were performed within a machining center. Several methods for reference measurement of martensite content are known in the literature. However, depending on the method used, large discrepancies may occur between the determined contents. Therefore, different analytical methods were used for reference measurements to determine the total martensite content in the subsurface. Metallographic sections, magnetic etching, Mössbauer spectroscopy, and X-ray diffraction with two different analytical methods were employed. Based on the correlation between the eddy current testing signals and the α′-martensite content in the subsurface, process control of the manufacturing process can be achieved in the future.

show abstract

The Effect of H13 Oxide Particles Supplied at the Interface Copper Alloy/Cast Iron Before Sliding on Tribological Behaviour and Friction Mechanisms

Alimi

Kchaou

Elleuch

2014

Trans Indian Inst Met

View full text Add to dashboard Cite

Mössbauer and SEM characterisation of the scale on type 304 stainless steel

Cited by 7 publications

References 1 publication

Image processing for surface quality control in stainless steel production lines

Image processing for surface quality control in stainless steel production lines

Non-destructive, Contactless and Real-Time Capable Determination of the α’-Martensite Content in Modified Subsurfaces of AISI 304

The Effect of H13 Oxide Particles Supplied at the Interface Copper Alloy/Cast Iron Before Sliding on Tribological Behaviour and Friction Mechanisms

Contact Info

Product

Resources

About