Made steel - 進出口

Adamite Roll Introduction The semi-steel adamite roll is casted as a whole and there is no weak interface in compound casting roll, thus it has a better capacity, strength and toughness than cast iron roll. This kind of mill rolls can be used as work roll, back-up roll and vertical roll for large-class and medium-class rough rolling mill and intermediate rolling mill of section steel, wire rod, rail beams, steel billet, hot rolling steel strip. Most of the adamite steel rolls are produced by the static integral casting method. It must be subjected to high-temperature diffusion annealing. Generally, adamite rolls for steel rolling mills are required to control the total amount of non-metallic inclusions below 0.05%. The centrifugal composite semi-steel back-up rolls are made of adamite steel material, the body and neck of the rolls are made of nodular cast iron, and they have been successfully used in hot-rolled strip steel finishing mill.

Alloy Cast Steel Roll materials are eutectoid steel and hypereutectoid steel. Adding alloy content such as Cr, Ni, Mo, and V up to more than 0.8%, carbon content 0.4~1.3%. The matrix structure, after heat treatment of normalizing and tempering, becomes sorbite and tempered sorbite. This type of steel mill roll possesses high strength, good toughness, good resistance to hot cracking, and strong impact resistance. The cast steel roll employs monoblock casting process (single pour): Melting-Casting-Heat Treatment-Machining-Flaw Detection-Finished Products. It can be work rolls for blooming and slab mills, section roughing mill rolls, as well as backup rolls for hot-strip steel rolling mills. TINVO's alloy cast steel mill rolls conform to international standards, including ISO, GB, ASTM, DIN, and JIS.

Forged steel rolls have toughness, surface hardness uniformity and fatigue resistance and widely used to the cold rolling mill. The mill rolls are made from steel ingots by forging. Forging can solve metallurgical defects such as loose and shrinkage holes in the ingot, and crush the coarse cast structure to obtain a high-quality roll with dense structure and uniform composition. The production process of forged roll includes smelting, ingot casting, forging, post-forging heat treatment, rough processing, final heat treatment and finishing. The rolls are heat-treated differently depending on the material and application. They are mainly used as strip rolling mill work roll and backup roll, H-type steel universal–shaft, High-speed roll(HSS roll), Cr4 steel backup roll, Cr5 forged steel roll, 86CrMoV7 forged steel roll, 42CrMo forged steel roll, MC2, MC3, MC5, MC6 forged steel roll, etc.