ISSN 2594-5297
57° Seminário de Laminação e Conformação de Metais — vol. 57, num.57 (2022)
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Abstract
THE CONTROL OF HEAT TREATMENT FURNACE ATMOSPHERE IN CONTINUOUS GALVANIZING LINES (CGL) ALLOWS THE IMPROVEMENT OF THE SURFACE QUALITY OF THE COATED ADVANCED HIGH STRENGTH STEELS (AHSS), PARTICULARLY IN THE CASE OF GALVANIZED (GI) COATING. AN ADJUSTED ATMOSPHERE IS RESPONSIBLE FOR MINIMIZING THE FORMATION OF OXIDES ON THE STEEL SURFACE AND IMPROVING OPERATIONAL EFFICIENCY. THE ATMOSPHERE CONTROL DURING THE HEAT TREATMENT OF AHSS STEELS IS EVEN MORE IMPORTANT DUE TO THE INTENSE PRESENCE OF ALLOYING ELEMENTS IN THESE STEELS. THE PRESENCE OF THESE ALLOYING ELEMENTS, LIKE MN AND SI, COULD FORM SIMPLE OR COMPLEX OXIDE PARTICLES THAT AFFECT THE SURFACE QUALITY OF THE COATING. IN THIS CONTEXT, THE INFLUENCE OF THE ATMOSPHERE OF THE HEAT TREATMENT FURNACE HAS BEEN DETERMINED, PARTICULARLY THE DEW POINT (DP) PARAMETER. ITS INFLUENCE ON THE FORMATION AND SURFACE QUALITY OF GI COATING OF THE STEELS WITH HIGH MN ADDITIONS HAS BEEN DETERMINED USING A HOT DIP PROCESS SIMULATOR (HDPS) AT LABORATORY SCALE. IT WAS POSSIBLE TO ASSESS THIS INFLUENCE ON THE COATING FORMATION AND TO OPTIMIZE THE FURNACE ATMOSPHERE. THE PRODUCTION OF GI COATINGS WITH GOOD SURFACE QUALITY AND ADHESION WAS ALSO OPTIMIZED, PROVIDING CONDITIONS TO ACHIEVE GREATER OPERATIONAL FLEXIBILITY.
THE CONTROL OF HEAT TREATMENT FURNACE ATMOSPHERE IN CONTINUOUS GALVANIZING LINES (CGL) ALLOWS THE IMPROVEMENT OF THE SURFACE QUALITY OF THE COATED ADVANCED HIGH STRENGTH STEELS (AHSS), PARTICULARLY IN THE CASE OF GALVANIZED (GI) COATING. AN ADJUSTED ATMOSPHERE IS RESPONSIBLE FOR MINIMIZING THE FORMATION OF OXIDES ON THE STEEL SURFACE AND IMPROVING OPERATIONAL EFFICIENCY. THE ATMOSPHERE CONTROL DURING THE HEAT TREATMENT OF AHSS STEELS IS EVEN MORE IMPORTANT DUE TO THE INTENSE PRESENCE OF ALLOYING ELEMENTS IN THESE STEELS. THE PRESENCE OF THESE ALLOYING ELEMENTS, LIKE MN AND SI, COULD FORM SIMPLE OR COMPLEX OXIDE PARTICLES THAT AFFECT THE SURFACE QUALITY OF THE COATING. IN THIS CONTEXT, THE INFLUENCE OF THE ATMOSPHERE OF THE HEAT TREATMENT FURNACE HAS BEEN DETERMINED, PARTICULARLY THE DEW POINT (DP) PARAMETER. ITS INFLUENCE ON THE FORMATION AND SURFACE QUALITY OF GI COATING OF THE STEELS WITH HIGH MN ADDITIONS HAS BEEN DETERMINED USING A HOT DIP PROCESS SIMULATOR (HDPS) AT LABORATORY SCALE. IT WAS POSSIBLE TO ASSESS THIS INFLUENCE ON THE COATING FORMATION AND TO OPTIMIZE THE FURNACE ATMOSPHERE. THE PRODUCTION OF GI COATINGS WITH GOOD SURFACE QUALITY AND ADHESION WAS ALSO OPTIMIZED, PROVIDING CONDITIONS TO ACHIEVE GREATER OPERATIONAL FLEXIBILITY.
Keywords
GI coating; Mn steel; Hot dip galvanizing; Furnace atmosphere, Dew point.
GI coating; Mn steel; Hot dip galvanizing; Furnace atmosphere, Dew point.
How to refer
Eleuterio, Henrique Lacerda.
THE EFFECT OF HEAT TREATMENT FURNACE ATMOSPHERE ON GALVANIZED (GI) COATING FORMATION OF ADVANCED HIGH STRENGTH STEELS (AHSS)
,
p. 323-336.
In: 57° Seminário de Laminação e Conformação de Metais,
São Paulo,
2022.
ISSN: 2594-5297
, DOI 10.5151/2594-5297-34734
