China 75crmo 75CrNiMo Alloy Cast Steel Roll

Alloy Steel Rolls for Rolling Mill
1. Description
Alloy cast steel roll is manufactured with high quality steel molten by arc furnace, due to the advanced casting and thermal traetment technique, such roll is of very high intensity. Owing to its excellent performances of anti-heat crack, tenacity and wear-resistance,t is appropriate to be used for rough and intermediate section steel rolling machine, heat rolling strip steel rough rolling machine stand and uesd as back-up roll for heat rolling strip steel. Its metallographic structure is made of pearlite or temper sorbite. The alloy steel rolls are widely used in the BD mill and roughing stands of heavy section mills, universal mills and rail& beam mills. This type of roll often has deep grooves in the roll body, so we make it by static cast. Due to the low carbon in the chemistry, we can hardly see graphite and carbide in the microstructure.
2. Chemical Composition
Grade
C
Si
Mn
P
S
Cr
Ni
Mo
V
AS 40
0.35-0.45
0.20-0.60
0.60-1.20
≤0.035
≤0.030
2.00-3.50
0.00-0.80
0.30-0.70
0.05-0.15
AS 50
0.45-0.55
0.20-0.60
0.60-1.20
≤0.035
≤0.030
1.00-3.50
0.30-1.00
0.30-0.70
0.05-0.15
AS 60
0.55-0.65
0.20-0.60
0.50-1.00
≤0.035
≤0.030
0.80-1.20
0.20-1.50
0.20-0.60
AS 65
0.60-0.70
0.20-0.60
0.50-0.80
≤0.035
≤0.030
0.80-1.20
0.20-0.50
0.20-0.45
AS 75
0.70-0.80
0.20-0.70
0.70-1.10
≤0.035
≤0.030
0.80-1.50
≥0.20
0.20-0.60
3.Mechanical Properties
Tensile Strength (kg/mm²)
550-700
Bending Strength (kg/mm²)
750-1000
Elongation (%)
0.4-2.0
4. Equipments
5.Machining
6.Inspection and Delivery
TANGSHAN WEILANG is a full integrative enterprise who is dedicated to design, production, sales and service in metallurgical products.Our products contain various mill rolls and roll rings for different kinds of bar&wire mills, section mills, plate&strip mills, tube mills etc., which has been supplied to 20 countries and regions including Southest Asia, Europe, North America and Middle East.