Production of hot rolled thin gauge steel strip in a compact six-stand mill was studied by mathem... more Production of hot rolled thin gauge steel strip in a compact six-stand mill was studied by mathematical modelling and on site measurements. Data obtained during processing low carbon steel strip ranging from 1.06 to 2.68 mm in final outgoing thickness included speeds, reductions and separation forces at each of the six stands. The mean flow stress during rolling was calculated
Profile and shape control are required to assure the dimensional quality of rolled strip. Occurre... more Profile and shape control are required to assure the dimensional quality of rolled strip. Occurrence of waves either at the edges or centre of strips is attributed to inconsistency between the entry and exit cross-section profiles of the stock within a given rolling pass. The exit profile of the strip can be computed by considering that the such profile is the complement of that of the roll-gap, which is affected by wear, thermal expansion and distortion of the work rolls A computer model was developed to predict the profile of the roll-gap taking into account the thermal gradient within the work roll and the distortion caused by the acting forces. It was possible to establish a good correlation between the profiles of strips obtained from trials carried out on site, and the predictions of the model. The model allows for the prediction of the onset of shape defects from changes in the profile of rolled strips.Se requiere del control del perfil y forma para asegurar la calidad dimens...
ABSTRACT Production of hot rolled thin gauge steel strip in a compact six-stand mill was studied ... more ABSTRACT Production of hot rolled thin gauge steel strip in a compact six-stand mill was studied by means of mathematical modelling and on site measurements. Data obtained during processing low carbon steel strip ranging from 1.06 to 2.68 mm in final outgoing thickness included speeds, reductions and separation forces at each of the six stands. The mean flow stress during rolling was calculated from the rolling loads, assuming adhesive conditions within the roll-gap, and by means of a mathematical model that accounts for strain hardening and the occurrence of various dynamic restoration phenomena during deformation. It was found that the values of the mean flow stress values, independently of the way they were obtained, varied as a function of both, strain rate and temperature, being possible to derive a unique formulation to describe their behaviour.
Page 1. Characterization of friction stir welding on aluminum Jerry Wong 1,a , Patricia Zambrano ... more Page 1. Characterization of friction stir welding on aluminum Jerry Wong 1,a , Patricia Zambrano 2,b , Martha P. Guerrero 2,c , Victor Mucino 1,e and Rafael Colás 2,d 1West Virginia University, Mechanical and Aerospace Engineering Dep., Morgantown, WV 26506-6106, USA. ...
... Maribel de la Garza 1, a , Mayra Moreno 1, b , Martha Patricia Guerrero Mata 1, c , Patricia ... more ... Maribel de la Garza 1, a , Mayra Moreno 1, b , Martha Patricia Guerrero Mata 1, c , Patricia Zambrano 1, d . Rafael Colás 1, e and Yvan Houbaert 2, f ... The study was carried out on samples obtained from an industrial plant and on samples coated in a hot dip process simulator. ...
Production of hot rolled thin gauge steel strip in a compact six-stand mill was studied by mathem... more Production of hot rolled thin gauge steel strip in a compact six-stand mill was studied by mathematical modelling and on site measurements. Data obtained during processing low carbon steel strip ranging from 1.06 to 2.68 mm in final outgoing thickness included speeds, reductions and separation forces at each of the six stands. The mean flow stress during rolling was calculated
Profile and shape control are required to assure the dimensional quality of rolled strip. Occurre... more Profile and shape control are required to assure the dimensional quality of rolled strip. Occurrence of waves either at the edges or centre of strips is attributed to inconsistency between the entry and exit cross-section profiles of the stock within a given rolling pass. The exit profile of the strip can be computed by considering that the such profile is the complement of that of the roll-gap, which is affected by wear, thermal expansion and distortion of the work rolls A computer model was developed to predict the profile of the roll-gap taking into account the thermal gradient within the work roll and the distortion caused by the acting forces. It was possible to establish a good correlation between the profiles of strips obtained from trials carried out on site, and the predictions of the model. The model allows for the prediction of the onset of shape defects from changes in the profile of rolled strips.Se requiere del control del perfil y forma para asegurar la calidad dimens...
ABSTRACT Production of hot rolled thin gauge steel strip in a compact six-stand mill was studied ... more ABSTRACT Production of hot rolled thin gauge steel strip in a compact six-stand mill was studied by means of mathematical modelling and on site measurements. Data obtained during processing low carbon steel strip ranging from 1.06 to 2.68 mm in final outgoing thickness included speeds, reductions and separation forces at each of the six stands. The mean flow stress during rolling was calculated from the rolling loads, assuming adhesive conditions within the roll-gap, and by means of a mathematical model that accounts for strain hardening and the occurrence of various dynamic restoration phenomena during deformation. It was found that the values of the mean flow stress values, independently of the way they were obtained, varied as a function of both, strain rate and temperature, being possible to derive a unique formulation to describe their behaviour.
Page 1. Characterization of friction stir welding on aluminum Jerry Wong 1,a , Patricia Zambrano ... more Page 1. Characterization of friction stir welding on aluminum Jerry Wong 1,a , Patricia Zambrano 2,b , Martha P. Guerrero 2,c , Victor Mucino 1,e and Rafael Colás 2,d 1West Virginia University, Mechanical and Aerospace Engineering Dep., Morgantown, WV 26506-6106, USA. ...
... Maribel de la Garza 1, a , Mayra Moreno 1, b , Martha Patricia Guerrero Mata 1, c , Patricia ... more ... Maribel de la Garza 1, a , Mayra Moreno 1, b , Martha Patricia Guerrero Mata 1, c , Patricia Zambrano 1, d . Rafael Colás 1, e and Yvan Houbaert 2, f ... The study was carried out on samples obtained from an industrial plant and on samples coated in a hot dip process simulator. ...
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