Cemented Carbide Rings – Technical Specification

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Grades and related parameters

Grade

Wc(%)

Co(%)  Ni(%) Cr (%)

Density

 g/cm3

Hardness

≥HRA

Flexural strength

≥N/mm3

Compression

Strength

≥N/mm3

TR06

94

6

14.9 ± 0.15

88.0

2300

4200

TR08

92

8

14.7 ± 0.15

87.5

2400

4100

TR10

89

11

14.3 ± 0.15

86.5

2500

3900

TR12

86

14

14.0 ± 0.15

85.0

2600

3600

TR14

82

18

13.6 ± 0.15

83.0

2500

3300

YGR60

70

30

12.8 ± 0.15

78.0

2200

2900

YGR55

75

25

13.1 ± 0.15

80.0

2400

3000

YGR45

80

20

13.5 ± 0.15

82.5

2500

3100

YGR40

82

18

13.7 ± 0.15

83.5

2600

3200

YGR30

85

15

14.2 ± 0.15

85.0

2700

3300

YGR25

88

12

14.3 ± 0.15

86.5

2300

3400

YGR20

90

10

14.4 ± 0.15

87.5

2400

3500

YGH55

75

25 Co(%)

12.9 ± 0.15

80.0

2500

3000

YGH45

80

20 Co(%)

13.4 ± 0.15

82.0

2500

3100

YGH40

82

18 Co(%)

13.6 ± 0.15

83.5

2500

3200

YGH30

85

15 Co(%)

13.9 ± 0.15

83.5

2400

3300

YGH25

88

12 Co(%)

14.1 ± 0.15

85.0

2300

3400

YGH20

90

10 Co(%)

14.8 ± 0.15

86.0

2500

3500

 

Applications recommendation

GradeRecommendation applications
TR06It possesses the highest hardness and best wear-resistance among all the varieties of cemented carbide toll rings, thus used for the rolling of common wire and hard wire on the last stands of high-speed wire rod finishing mill
TR08It possesses better wear-resistance and moderate impact-resistance with the hardness second to TR06 among all the varieties, thus used at the last two stands of high-speed wire rod finishing mill.
TR10It possesses the moderate wear-resistance and impact-resistance and good versatility, thus used at the third-fourth stands from the bottom of high-speed wire rod finishing mill or all the stands.
TR12Because of the best versatility, it is used at the front stands of finishing mill and rear stands of common rolling mill.
TR14It is usually used at the first or second of finishing mill, and also applies to the stands of rolling machine with low speed and accuracy and varied technology.
YGH20With high hardness.it is used for the rolling of common wire and hard wire at the last two stands of finishing mill.
YGH25With good wear-resistance and moderate impact-resistance, it is used at the last two stands of finishing mill.
YGH30With moderate wear-resistance and impact-resistance and good versatility, it is used at the last four stands of finishing mill or all the stands.
YGH40With the best versatility, it is used at the front stands of finishing mill and rear stands of common rolling mill.
YGH45It is used at first two stands of finishing mill as well as the stands of pre-finishing mill, and also applied to the stands of rolling machine with low speed and accuracy and varied technology.
YGH55Because of fine toughness and hot crack resistance, it is used for the stands of pre-finishing mill and hot rolled steel collar.
YGR20High wear resistance and corrosion resistance. Used in the last 1-2 stands of finishing mills.
YGR25High wear resistance and corrosion resistance. Used in the last 1-3 stands of finishing mills.
YGR30Good toughness, wear resistance, corrosion resistance and thermal crack resistance. Used in the middle and rear stands of finishing mill.
YGR40Good toughness and thermal crack resistance, good for general purposes .Used in most stands of the finishing mill and in the rear stands of common mill.
YGR45Good toughness and thermal crack resistance. Used in the front stands of finishing mills.
YGR55Good impact resistance. Used in the stands of pre-finishing rolling mills for hot rolling ribbed steel bars and they can be machined with turning and milling
YGR60Good impact resistance. Used for hot rolling ribbed steel bars and in the first and second stands of pre-finishing rolling mills

 

Recommend grades for use in different stands

Grade series

Stands of pre finish rolling mills

Stands of finish rolling mills

Stands for reducing diameter

1

2

3

4

1

2

3

4

5

6

7

8

9

10

1

2

3

4

YGR20 YGH20

YGR25 YGH25

YGR30 YGH30

YGR40 YGR40

YGR45 YGH45

YGR50 YGH50

YGR60

TR06

TR08

TR10

TR12

TR14

○ First ● Second ▲ Hot-rolled deformed steel bars

Note:For YGH series medium or weak alkali water of PH≥7.2
For YGR、TR series or PH≥7.2 weak acid water of PH≤7.2