Composite rolls with TC rings

Composite rolls with TC rings

combined roll 1_副本.png


Application: hot rolling finishing mill for bar, finishing and slit mill for rebar/deformed steel bar, finishing mill for wire rod

Lower downtime for roll due to the longer groove life of TC roll rings

Maximum the rolling yield, increased mill utilization

Consistent, high surface quality, in-tolerance products

 

Easy to assemble and disassemble

By assembling hydraulic lock nut, the injected hydraulic oil produces an axial pressure of more than 200 MPA on the carbide roll ring, which tightens the carbide roll ring to axle. Under the protection of prestressing force produced by the axial tension of hydraulic nuts, the composite roll exerts higher rolling performance.

9.jpg

Specifications of tungsten carbide rings for composite roll

tungsten carbide rings specifications

External diameter (mm)

Width of ring  (mm)

Rolling size   (mm)

285-480

50-200

φ5-φ28

Grades and properties of tungsten carbide ring for composite roll

Grade

Chemical composition%)

Physical mechanical properties

Wc

Co/Ni/Cr

Density

g/cm3(±0.5

Hardness HRA(±0.3

Transverse rupture strength N/mm2

PL20F

80

20

13.5

83.0

2650

PL25F

75

25

13.1

81.0

2600

PL30F

70

30

12.6

80.0

2580

PL32F

68

32

12.5

79.5

2400

 

Slitting rolling technology for hot-rolled bar, rebar

10.jpg

According to customers mills and production line , we offer the unique rolling design for single rolling, two-slit, three-slit and four-slit stands. The composite rolls can be used as K1 finished roll, K2 leader roll, K3 slitting roll and K4 pre-slitting roll for the rolling of wire rod, bar and rebar.

Process of rib and groove for cemented carbide composite rolls

11.jpg