The world No. 1 in crude steel production steel plant, over 70% of the HSS for bar and wire are from us.

Fnished carbide roll rings

Brand name: LMM GROUP
Packing Details : Wooden box with fumigation or Wooden Fram
Delivery Details: 30~60days or Based on the quantity
Shipping: Sea freight、Land freight、Air freight

LMM have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time

Manufacture drawing

Process schedule with ETD date

QC checking of each process

Checking report

Photos &videos of each process

ISO 9001 certificate

Warranty Time

The third party Checking

Cemented carbide roll rings (also known as tungsten carbide roll ring) possesses good thermal conduction property. Compared with pther materials, it is much better in terms of heat-resistance, wear-resistance and strength. What’s more, it shardness reduces a little under the condtion of high temperature. So, the cemented carbide roll rings is invented with the ap-pearance of high speed wire rod mill. With the development and improvement

Application: it is widely applied in the production of high speed wire, bar and deformed steel bar.

tc-ring

Dimensions and precision of  Finished carbide roll rings

tc-ring

Dimension rang of finished rolls

External diameter(mm)

Inner diameter(mm)

Height(mm)

100~500

50-380

20-250

 

Tolerances allowable for the O.D., I and height of roll ring 

Precision class

External diameter(mm)≤200mm

External diameter(mm)≥200mm

 

better

ordinary

better

ordinary

Out diameter(mm)

±0.02

±0.05

±0.03

±0.05

Special
requirements

Inner diameter(mm)

±0.02

±0.035

±0.025

±0.05

Height(mm)

±0.025

±0.10

±0.05

±0.10

We can supply them accrding to the drawings provided by customers

Technical specifications of  Finished carbide roll rings

The allowable deviation of carbide roll rings

Radial runout of groove ≤ 013mm
Radial runout of periphery ≤ 0.013mm
End face runout ≤ 0. 02mm
End face planeness ≤ 0. 01 mm
End face parallelism ≤ 0. 01 mm
Inner hole cylindericity ≤ 0. 01 mm

Roughness of carbide rolls

inner hole roughness 0. 4 u m periphery roughness0. 8 um end face roughness 0. 4 u m

The allowable deviation in external diameter internal diameter and height is to be determined based on customers needs.

tungsten carbide ring rolls

Table of grades and properties of carbide roll rings and related data

Grade

Wc(%)

Co(%)

Ni(%)

Cr(%)

Density g/cm³ ±0.15

Hardness≥HRA ±0. 5

Bending strength≥N/mm²

LMM08R

92

8

14.7 

88.0

2800

LMM10R

90

10

14.5 

87.5

2750

LMM12R

88

12

14.2 

86.0

2700

LMM15R

85

15

14.1 

85.0

2650

LMM18R

82

18

13.7 

83.5

2650

LMM20R

80

20

13.5 

83.0

2600

LMM25R

75

25

13.1 

82.0

2500

LMM30R

70

30

12.7 

80.0

2400

LMM32R

68

32

12.5 

79.0

2400

LMM06H

94

6

0

0

14.8 

89.0

2580

LMM08H

92

8

0

0

14.7 

88.5

2600

LMM10H

90

10

0

0

14.5 

88.0

2700

LMM15H

85

15

0

0

14.1 

85.0

2700

LMM20H

80

20

0

0

13.5 

83.0

2700

LMM25H

75

25

0

0

13.1 

81.5

2550

LMM30H

70

30

0

0

12.7 

80.0

2500

LMM32H

68

32

0

0

12.5

78.5

2400

YGR20

90

10

14.4 

87.5

2650

YGR25

88

12

14.3 

86.5

2600

YGR30

85

15

14.2 

85.0

2550

YGR40

82

18

13.7 

83.5

2500

YGR45

80

20

13.5 

82.5

2400

YGR55

75

25

13.1 

80.5

2450

YGR60

70

30

12.8 

79.0

2250

YGH40T

85

15

14.1 

84.5

2700

YGH45T

80

20

13.5 

83.0

2600

What do I need for offering a quote ?

Please offer us 2D or 3D drawings (with material, dimension, tolerance, surface treatment and other technical requirement etc.) ,quantity, application or samples. Then we will quote the best price within 24h.

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We would be happy to help and advise if you have any questions or inquiries.