Centrifugal casting &static castiong mill roll for rolling mill machine
1, Nodular cast iron rolls
Ductile iron with more Ni, Mo alloy can obtain good pearlite, bainite, martensite matrix organization, and graphite shape for the ball, good thermal conductivity, tensile strength, high by changing the organization as the bainite, martensite and needle ductile iron the chemical and heat treatment process, we can obtain very dense mesh primary cementite, improve abrasion resistance.
-- Mechanical Property
Roll surface hardness
HSD70-90
Core department hardness
HSD35-55
Core department tensile strength
> 500Mpa
-- Application
Nodular cast iron rolls are mainly used in the billet and roughing stand of hot rolling mills; Sections mills, tube mills, bar mills and wire mills.
2)Indefinite Chilled cast iron roll
The feature of this casting roll is that it shaped into graphite ball and its performances can be compared with that of alloy infinite chilled roll, and its intensity is higher than that of infinite chilled one, so it is usually used for rest energy casting.
-- Chemical Composition
Grade Hardness(HSD) C Si Mn Ni Cr Mo
Indefinite-I 60-70 3.0/3.5 0.5/1.0 0.5/1.0 0.5/1.0 0.5/1.0 0.2/0.6
Indefinite-II 62-72 3.0/3.5 0.5/1.0 0.5/1.0 1.0/2.0 0.5/1.0 0.2/0.6
Indefinite-III 65-75 3.0/3.5 0.5/1.0 0.5/1.0 2.0/3.0 0.7/1.2 0.2/0.6
Indefinite-IV 70-85 3.0/3.5 0.5/1.0 0.5/1.0 3.0/5.0 1.0/2.0 0.2/0.6
-- Physical properties
Hardness of shell HSD60-85
Hardness of neck HSD35-48
Tensile Strength of core ≥ 450Mpa
-- Application Scope
For the finishing stands of continuous rolling mill of strip and bar, the pre-finishing stands of high speed wire, the intermediate and the front of finishing stands of small section, also utilized in thin plate and straightening roll.
Our company is specialized in dealing in all kind of cast iron roll and cast steel roll for rolling mill. We have our own factory.
PRODUCTS:
Cast steel mill roll, cast iron mill roll, work roll for hot strip, back up roll, SG iron roll, Indefinite Chilled double poured roll, rebar mill roll, HSS and semi-HSS roll, Nodular cast iron, centifugal&static cast roll.
