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HOME ＞ PRODUCTS ＞ Roll ＞ Alloy Chill Roll
Alloy Chill Roll
    Publish time 2018-05-29 10:15    

Model:CC

Alloy Chill Roll

The chill structure in the working layer of barrel should be controlled very well as per the rolling condition. The structure of working layer may be martensite + austenite + carbon or martensite + bainite + carbon when chemical composition of Ni and Mo goes to certain percentage. The chill hardened surface has higher hardness, good wear resistance. But, it has high cracking sensibility. It’s easy to be broken while hot cracking happened. Used for finish stands of strip hot rolling mill, bar and wire rolling mill.

Chemical Composition: (%)

Code C Si Mn Cr Ni Mo V
CC-1 2.9-3.6 0.4-1.0 0.2-1.0 0.2-0.6 … 0.2-0.6 …
CC-2 2.9-3.6 0.4-1.0 0.2-1.0 0.2-0.6 0.5-1.0 0.2-0.6 …
CC-3 2.9-3.6 0.4-1.0 0.2-1.0 0.2-1.0 1.0-3.0 0.2-0.6 …
CC-4 2.9-3.6 0.4-1.0 0.2-1.0 0.1-0.6 … 0.2-0.8 （0.1-0.3）

 Physical Features:

Code Barrel Hardness(HS) Neck Hardness (HS) Tensile Strength(MPa) Depth of Chill
Section Steel Strip Steel
≤Φ200 Φ201-250 Φ251-300 ＞Φ300 　 　
CC-1 58-70 32-48 ＞150 12-25 15-30 17-35 20-45 　 　
CC-2 62-75 35-52 ＞150 12-25 15-30 17-35 20-45 　 　
CC-3 65-80 35-52 ＞150(300） 12-25 15-30 17-35 20-45 　 　
CC-4 60-70 35-48 ＞300 　 　 　 　 0.2-0.8 (0.1-0.3)

Applications:

CC-1 For finish stands of wire rod, bar rolling mill and narrow strip mill
CC-2 For finish stands of wire rod, bar rolling mill and narrow strip mill; Seamless steel tube seamless-tube rolling mill Stretch-reducing & sizing ring
CC-3
CC-4 3-roll plate mill; hot sheet pack mill

Available Manufacturing Roll Range:

Type Barrel Dia. (mm) Barrel Length (mm)
Small ≤Φ550  
Large compound ≤Φ900 2100

CC-1,CC-2,CC-4, Barrel, 500x                  CC-3, Barrel, 500x,                                             CC-4, Neck, 100x,

Fine pearlite+carbide                              Pearlite+few bainite+carbide                                  Pearlit+carbide