Comparativement à carbure cimenté classique de rouleau anneaux, la nouvelle génération de la série YGH-T de rouleaux anneaux pour rouler à haute vitesse des barres d'acier a une plus grande résistance à l'impact et la fatigue thermique et une résistance à l'usure très élevés aussi bien.
Les caractéristiques exceptionnelles d'anneau de rouleau YGH-T qui sont différents des anneaux de rouleau de carbure cimenté conventionnel dans des applications pratiques sont les suivants :
Grade | Chemical composition | Mechanical properties | Physical properties | |||||
---|---|---|---|---|---|---|---|---|
Co+Ni % |
WC % |
Hardness HAR |
T.R.S MPa |
Density g/cm3 |
Sandvik | Cerametal | Sintermet | |
YGH10T | 6 | 90 | 88 | 2250 | 14.90 | H6T | CE65 | SM80 |
YGH20T | 12 | 88 | 86 | 2750 | 14.30 | ? | ? | SM64 |
YGH30T | 15 | 85 | 85 | 2800 | 14.00 | H15C | CE79 | SM59 |
YGH40T | 18 | 82 | 83 | 2700 | 13.70 | ? | CE103 | SM65 |
YGH50T | 22 | 78 | 82 | 2700 | 13.40 | H25P | CE112 | SM61 |
YGH60T | 30 | 70 | 79 | 2500 | 12.70 | C30P | CE260 | SM62 |
Grade | Recommended applications |
---|---|
YGH10T | Maximum hardness, excellent wears resistance in the series. Used in the last 1-2 stands of good high speed finishing mills for rolling common and hard steel bars. |
YGH20T | Higher wear resistance, moderate impact resistance in the series. Used in the last 1-3 stands of good high speed finishing mills for rolling common and hard steel bars. |
YGH30T | Moderate wear resistance and impact resistance, good for general purposes. Used in the last 1-4 stands or all stands of finishing mills. |
YGH40T | Best for general purposes, used in the front stands of good mills and in the rear stands of common mills. |
YGH50T | Used in the first and second stands of finishing mills and in the stands of pre-finishing rolling mills. For every stand of rolling lines for low speed rolling, low precision and unstable operation. |
YGH60T | Maximum binder content in YGH series, good toughness and thermal crack resistance. Used in the stands of pre-finishing rolling mills and for roll rings for hot rolling of ribbed steel. |
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