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Rolling Adamite Roll Rolling mill rolls Pouring (Casting) Mold  Spin Casting (Centrifugal Casting) SIP Roll  Grain Roll (Indefinite Chilled Iron Roll)
Billeting Mill Rolls  Graphitic Steel Roll Adjustable Inclined Centrifugal Casting Machine for small size  Core Material Static Casting
Vertical Centrifugal Casting Machine (vertically spinning caster)  Ductile Iron Rolls (Spheroidal Graphite Cast Iron Rolls)  Iron Base Rolls
DH Furnace (Differential Heat Treating Furnace)  Hot Rolling High Speed Tool Steel Base Rolls (Sumitomo material code “STZ”)
Centrifugal Casting Composite Rolls Blooming and Slabbing Rolls Cold Rolling Steel Base(Semi-steel Base) RollsHigh Speed Tool Steel Base Rolls
Shaping and deforming materials by passing them through two and more revolving rolls. Depending on the treating temperature, Classification is made into hot rolling and cold rolling.
 Adamite Roll
Semi-steel base rolls having a high friction coefficient. A higher friction coefficient improves biting rolled materials. The special treatment applied can enhance their properties of anti-fire cracking and toughness. Adamite rolls are applied to billeting mills and rough trains of bar mills.
 Rolling mill rolls
Rolls employed in blast furnace steel manufacturers and electric furnace steel manufacturers for rolling (the functions of which are pressing and extending by revolving rolls) steel stock like slabs and bars. Mechanical properties of steel rolled are drastically improved.
 Pouring (Casting)
Putting molten metal into the molds.
A container that is used to give its shape to molten metal that is poured. The molds are classified into sand mold, cement mold, metal mold, etc.
 Spin Casting (Centrifugal Casting)
A casting method to pour molten metal into a high speed revolving mold. The method is classified into vertical method, horizontal method, and inclined method ( as an intermediate method).
 SIP Roll
Rolls given our original heat treatment performed. SIP comes from “Sumitomo Improved Penetration.” The finer microstructure in the subsurface zone and their lower mass effect are realized along with breakage resistance, anti-surface deterioration and anti-fire cracking improved.
 Grain Roll (Indefinite Chilled Iron Roll)
Roll material with one of long history. With flaky graphite and cementite in its microstructure, grain rolls of a high hardness are superior not only in wear resistance but also in anti-fire cracking, and are usually applied to the finishing stand of the hot strip mills and pipe rolling mills.
 Billeting Mill Rolls
   Rolls for billeting mills to produce billet(an intermediate product) from large steel stock.

 Graphitic Steel Roll
Semi-steel rolls with small spherical-like graphite precipitated in the microscopic structure usually applied in order to improve Adamite rolls’ inferior properties of anti-fire cracking and anti-burned sticking.
 Adjustable Inclined Centrifugal Casting Machine for small size
Shell melt is poured into the high speed revolving mold at a low inclination angle setting, and then core melt is poured step by step into the reduced speed revolving mold at step-by-step further inclination angle settings. Productivity is improved in comparison with its counterpart (the vertical method and the horizontal method). The fine microstructure free from the microscopic dendritic growth generated by vertical method enhances resistance to fire cracks and surface deterioration. The shell can be produced to be thicker than the vertical method.
 Core Material
   The central cylindrical part of a duplicate roll (the outer part of a roll barrel is called shell.) The duplicate rolls are conventionally produced by the centrifugal casting method. The core and the shell are metallurgically bonded.
 Static Casting
The most common way to pour molten metal into the molds which sit usually on the bed of a pit. The rolls with a hardness of approximately less than HSC 70 are cast this way.
 Vertical Centrifugal Casting Machine (vertically spinning caster)
One of the centrifugal casting methods. The molds on the table revolve vertically.
 Ductile Iron Rolls (Spheroidal Graphite Cast Iron Rolls)
Spheroidal graphite cast iron rolls with spheroidal graphite precipitated in the matrix of the microscopic structure, excellent in strength and anti-fire cracking. The applications of ductile iron rolls are extensive, ranging from slabbing & blooming rolls to finishing train rolls of the wire rod mills.
 Iron Base Rolls
The iron base rolls are divided into grain (indefinite chilled cast iron) roll, ductile (spheroidal graphite cast) iron roll and definite chilled cast iron roll. The grain rolls have some flaky graphite in the matrix of the microscopic structure, the ductile iron rolls some spheroidal graphite, and the definite chilled cast iron rolls no graphite.
 DH Furnace (Differential Heat Treating Furnace)
The heat treating furnace to heat quickly and quench the shell layer of a roll barrel in order to secure the shell layer of a high hardness.
 Hot Rolling
Rolling performed above the recrystallization temperature of rolled metal stock.
 High Speed Tool Steel Base Rolls (Sumitomo material code “STZ”)
Rolls with intermediate properties between ductile iron rolls and rolls of semi-steel base like adamite and ordinary high speed tool steel base rolls. The rolls possess conflicting properties of high resistance to heat cracking, surface deterioration and high toughness as well as high resistance to wear.
 Steel Base(Semi-steel Base) Rolls
Steel Base(Semi-steel Base) Rolls are classified into Adamite rolls and graphitic steel rolls. The rolls show a low hardness drop from groove surface to the cross sectional center and possess a high friction coefficient good for biting. Good biting is usually required for rolls for slabbing & blooming mills, billeting mills and the rough train of bar mills, for which anti-heat cracking properties and high toughness are also required. Steel base (semi-steel base) rolls applied to the rolled for mills mentioned above.
 Centrifugal Casting Composite Rolls
Rolls manufactured making use of centrifugal force generated by revolving a mold. A hard material with a high wear resistance is poured for the shell of roll barrel, and a soft and tough material with a high resistance to breakage is poured for the core of roll. The interface between the shell and the core is metallurgically bonded The core is usually of ductile cast iron with a high strength.
 Blooming and Slabbing Rolls
   Big rolls for rolling a steel ingot into a sheet of slab or a long piece of billet.

 Cold Rolling
Rolling performed under the recrystallization temperature of rolled metal stock.
 High Speed Tool Steel Base Rolls
Rolls with a higher content of carbon and hard particle forming alloy elements compared with those of tools of high speed tool steel to improve drastically resistance to wear and surface deterioration by precipitation of hard carbides of MC, M2C and M7C3 in the microscopic structure.
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