grinding indefinite chill rolls five main features

Industrial production process to use grinding rollers are usually made of high nickel-chromium cast iron indefinite chill. In recent years, more and more manufacturers began using high-chrome cast iron grinding roller, grinding roller organizations such high carbon content, low coefficient of friction, high hardness, excellent wear resistance. But the influence of heat sensitive, easy to slip, but there is an accident Card steel deep cracks formed when hot. The finishing mill grinding roll relatively good working conditions, thermal and mechanical shock impact is small, the main consideration when you select the material wear resistance and zirconia flap disc  surface roughness capacity to ensure the quality of the steel surface. 5m heavy plate mill for roughing and finishing are the same grinding rollers to complete. After years of practice, taking into account other new varieties, such as the development of new high-speed steel grinding rollers and other factors such as expensive, 5m heavy plate mill work rolls made of high Ni-Cr infinite chilled cast iron grinding roll.
This multi-use vertical centrifugal grinding roll casting compound. Since the outer layer of nickel, chromium, molybdenum and Bonded abrasives  other alloying elements, pearlite transformation postponed, and thus cast state organization bainite + martensite + Carbide + movie Paralympic like graphite. After heat treatment, a small amount of tissue for the bainite + martensite + Carbide + movie Paralympic like graphite. Grinding roll heart tissue as bainite or pearlite and a small amount of flake graphite carbide (+ bull's-eye-shaped ferrite) + group spheroidal graphite.
Its main characteristics:
a, bainite matrix organizational control, high strength, good toughness.
b, is still the M3C carbide wear particle type, but (Fe. Cr) 3C-type increases, high hardness, good wear resistance.
c, the matrix structure a certain amount of graphite, thermal conductivity, high resistance to warm, self-lubricating graphite rolled surface quality can be guaranteed to prevent sticking roller.
d, the outer layer from outside to inside the non woven flap wheel  graphite content increased, the working memory in a certain layer hardness landing.
e, core part of gray cast iron, high toughness, or ductile iron, high strength. Based on the increasing trend of rolling force, the current high nickel chromium cast iron composite abrasive rolls heart department is mainly made of high strength ductile iron.