Steel Pickling
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Effect of Rolling Reduction and Temperature on the Oxide Scale of Hot Rolled Mild Steel Strip
Hot rolling experiments were designed to investigate the effect of rolling temperature and rolling deformation on microstructure, thickness and surface red scale of hot rolled mild steel oxide scale by spectrometer, SEM and pickling experiment. The research results show that in the same other experiment conditions, the greater the rolling deformation, the th
Mat. Res.. Publicado em: 04/11/2019
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2. Evaluation of the properties of iron oxide-filled castor oil polyurethane
The aim of this study was to obtain and evaluate the electrical, thermal and mechanical properties of iron oxide-filled castor oil polyurethane (PU/Fe2O3). The iron oxide used in this study was a residue derived from the steel pickling process of a Brazilian steel rolling industry. Polymeric composites with different iron oxide volume fractions (2.5, 5.0, 7.
Mat. Res.. Publicado em: 26/10/2012
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3. Fragilização por hidrogênio de parafusos cementados / Hydrogen embrittlement of carburized bolts
The main aim of this work is to investigate the effects on hydrogen embrittlement of bolts due to acid pickling, baking, and strip processes performed during zinc plating. Carburized bolts type "hexagon flange head tapping screws", with 6 mm of diameter and 16 mm of thread length were organized into 39 different groups. Acid pickling was evaluated using volu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2011
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4. Otimização do corte de pontas de um aço livre de intersticiais laminado a quente usando tesoura do tipo guilhotina / Optimization the cut edge of a hot rolled interstitial free steel using a guillotine type shearing machine
The automotive industry\ s demand for high formability steels for use in exposed body panels motivated the development of several interstitial free (IF) steels specifications at Companhia Siderurgica Nacional. The \"IF-Ti\" steel specification belongs to the special deep drawing steels group (CSN EEP-IF), with yield strength <380 MPa, and among all grades of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/02/2011
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5. Avaliação estatística dos parâmetros operacionais das unidades de regeneração de ácido clorídrico da Usiminas
Operational parameters of the hydrochloric acid regeneration process and iron oxide production of the USIMINAS industrial plant were evaluated aiming to: (i) identify those statistically significant both for the quality of the oxide produced as for the generation of gases, and (ii) to develop statistical models that allow a satisfactory assessment of the pro
Publicado em: 2009
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6. Recuperação de efluentes industriais em colunas pulsadas
About 290.000 tons of stainless steel is produced annually in Brazil. This quantity is pickling along the production line to remove the surface of oxides, which form in the finishing stages of the steelmaking process. The pickling bath is a mixture of nitric and hydrofluoric acids and is used until the iron concentration has reached 40 - 80 g/l. At this stag
Publicado em: 1998