High-speed steel rolls

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High-speed steel rolls

Author:作者Clicks:2581 Time:2015-06-10

 

Description:

Double poured high speed steel is produced by the vertical spin casting process. The roll is heat treated at high temperatures to obtain optimum material properties, favorable stress levels and homogeneous hardness. The roll have excellent wear resistance in combination with good operation safety,good fire crack resistance and excellent oxidation behavior at high temperatures, and constant material properties throughout the usable shell.

Physical properties & Application:

Material code

Barrel hardness(HSD)

Neck hardness (HSD)

Tensile strength (Mpa)

Application

HCrS

70-85

35-45

450

Hot-rolled plates with rough roll, vertical roll bar line coarse, finishing work rolls

SHSS

75-85

35-45

450

Hot-rolled plates with rough roll, vertical roll bar line coarse, finishing work rolls

HSS I

70-85

35-45

450

HSS II

70-95

35-45

450

Hot-rolled sheet, strip finishing rolls, bar lines, finishing, pre-finishing work rolls

HSS III

70-95

35-45

450

Chemical analysis:

Material code

C

Si

Mn

Ni

Cr

Mo

V,Nb,W

HCrS

0.80-1.80

0.40-1.00

0.50-1.00

8.00-15.00

0.50-1.50

1.50-4.50

0.20-0.40

SHSS

0.60-1.20

0.80-1.50

0.50-1.00

0.20-1.20

3.00-9.00

2.50-5.00

0.50-2.00

HSS I

2.50-3.00

0.30-1.00

0.50-1.20

0.70-1.70

15.00-18.00

0.70-1.50

B0.5-3.0

HSS II

1.50-2.00

0.30-1.00

0.40-1.00

0.50-1.50

3.00-8.00

2.00-8.00

V3.0-8.0

HSS III

1.50-2.00

0.30-1.00

0.40-1.00

0.50-1.50

3.00-8.00

2.00-8.00

V+Nb3-8