Prix FOB
Obtenir le dernier prix( Negotiable )
|1 Pair Minimum Order
Pays:
China
N ° de modèle:
-
Prix FOB:
( Negotiable ) Obtenir le dernier prix
Localité:
China
Prix de commande minimale:
-
Commande minimale:
1 Pair
Packaging Detail:
-
Heure de livraison:
-
Capacité de Fournir:
-
Payment Type:
T/T, L/C
Groupe de produits :
Personne àcontacter Ms. Grace
Dongbeixin, Haerbin, Heilongjiang
Introduction
Bainitic nodular cast iron roll is a kind of ductile iron roll and is a roll made by spheroidizing the molten iron with magnesium and pouring it into the sand-lined cold type. Due to the spheroidizing treatment, the graphite carbon inside the cast iron is changed from flake to spheroid, which eliminates the phenomenon of graphite tip stress concentration caused by flake graphite, which significantly improves the strength of cast iron, similar to the cast steel roll, but the abrasion resistance is much higher than the cast steel roll. There are three types of nodules of magnesium, cerium, and calcium and magnesium are commonly used. Spheroidal graphite iron roll can be applied in open-rolling mills, roughing mills and casting groove, high strength and excellent wear resistance.
Â
Based on the analysis of the macro and microstructures of
conventional Ni-Mo bainite ductile cast iron rolls used
in bar finishing mills, we have found that the main cause of the
spalling failure of the roll surface layer is the low bainite
mass fraction in the roll structure, Irrational distribution of
carbide morphology, and non-round graphite
morphology.
On this basis, by optimizing the
mass fraction of alloying elements of conventional bainite
nodular cast iron composite rolls (nickel, copper, niobium
composite alloying), the purpose of optimizing the structure and
properties of the rolls is achieved. The structure of the
improved roll is finer, and its carbide morphology has been
significantly improved; meanwhile, the addition of alloying
elements has significantly improved the bainite strength in the
material, and its impact toughness, deflection, section
shrinkage, and elongation after fracture are significantly
improved compared with conventional Ni-Mo ductile iron, so it can
significantly extend the service life of rolls and effectively
reduce the production cost of steel.
| Pays: | China |
| N ° de modèle: | - |
| Prix FOB: | ( Negotiable ) Obtenir le dernier prix |
| Localité: | China |
| Prix de commande minimale: | - |
| Commande minimale: | 1 Pair |
| Packaging Detail: | - |
| Heure de livraison: | - |
| Capacité de Fournir: | - |
| Payment Type: | T/T, L/C |
| Groupe de produits : | Rolling Mill Roll |
