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1. Classic quality treatments
The purpose of these treatments is to destroy the coarse and/or heterogeneous raw casting structure to obtain a structure suitable for the desired characteristics.
1.1 Standardization or annealing of non-alloy steels
During heating and cooling, these steels undergo a reversible allotropic transformation α " γ and, due to their very low hardenability, the structure obtained after cooling is always composed of equilibrium constituents: ferrite + pearlite. This is true for the full range of cooling rates experienced by parts either in the mold (raw structure), or during heat treatment of parts with common thicknesses in excess of 10 mm, and also for all usual carbon contents, usually between 0.18% and 0.40%. The continuous...
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Metal treatments
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Classic quality treatments
Additional quality heat treatments
Bibliography
References
Standardization
French Standards Association (AFNOR)
- Vocabulaire du traitement thermique des produits ferreux - NF EN 10052 - janvier 1994
- août 2000 Aciers moulés de construction et d'usage général - Pr NF EN 10293 -
- Produits sidérurgiques. Détermination de la grosseur du grain ferritique ou austénitique des aciers - NF A 04-102 - novembre 1980
- Produits de fonderie. Aciers et fontes blanches moulés résistant...
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