Cemented Carbide Rings – Technical Specification
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
Grade | Recommendation applications |
TR06 | It 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 |
TR08 | It 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. |
TR10 | It 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. |
TR12 | Because of the best versatility, it is used at the front stands of finishing mill and rear stands of common rolling mill. |
TR14 | It 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. |
YGH20 | With high hardness.it is used for the rolling of common wire and hard wire at the last two stands of finishing mill. |
YGH25 | With good wear-resistance and moderate impact-resistance, it is used at the last two stands of finishing mill. |
YGH30 | With moderate wear-resistance and impact-resistance and good versatility, it is used at the last four stands of finishing mill or all the stands. |
YGH40 | With the best versatility, it is used at the front stands of finishing mill and rear stands of common rolling mill. |
YGH45 | It 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. |
YGH55 | Because of fine toughness and hot crack resistance, it is used for the stands of pre-finishing mill and hot rolled steel collar. |
YGR20 | High wear resistance and corrosion resistance. Used in the last 1-2 stands of finishing mills. |
YGR25 | High wear resistance and corrosion resistance. Used in the last 1-3 stands of finishing mills. |
YGR30 | Good toughness, wear resistance, corrosion resistance and thermal crack resistance. Used in the middle and rear stands of finishing mill. |
YGR40 | Good 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. |
YGR45 | Good toughness and thermal crack resistance. Used in the front stands of finishing mills. |
YGR55 | Good 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 |
YGR60 | Good 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 |
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YGR20 YGH20 |
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YGR25 YGH25 |
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YGR30 YGH30 |
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YGR40 YGR40 |
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YGR45 YGH45 |
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YGR50 YGH50 |
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YGR60 |
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TR06 |
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TR08 |
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TR10 |
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TR12 |
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TR14 |
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○ First ● Second ▲ Hot-rolled deformed steel bars
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Note:For YGH series medium or weak alkali water of PH≥7.2 |