Kocks Cemented Carbide Roll Rings
The Introduction of Kocks Cemented Carbide Rings
Kocks cemented carbide roll rings is used for a rolling mill with three roll rings arranged at an angle of 120 °to each other, also known as Y-type rolling mill. Its basic features are as follows:
Kocks cemented carbide roll ring
The wide allowance of the pass is large, and the rolled piece is not easy to be folded during rolling.
Because the rolled piece is surrounded by pressure on three sides, the deformation is uniform, and the cleavage is significantly reduced,which eliminating the steel stacking accident of continuous rolling often caused by cleavage.
The pass extension and the wear of each hole type are both uniform.
A set of pass patterns can adapt to the rolling of different steel grades
Compared with ordinary rolling mills in the case of the same area, the groove depth of the roll ring is small, thereby reducing the wear of the groove and improving the quality of the rolled product.
Kocks cemented carbide roll rings also called 3-dimensional Cemented Carbide Roll Rings,which are used for Hot Rolling Steel.
Kocks cemented carbide roll rings for Kocks three-roll mill is to replace the original ball-milling of cast iron roll ring,mainly the production of bearing steel,spring steel,alloy steel and other special steel. The steel surface and tolerance controls are clearly better than cast iron roll ring and wear-resistant is good,life is a cast iron roll ring 10 times.
The lifetime of the cemented carbide roll ring on tension reducing mill is longer compared with common cast iron roll ring for hot rolling mill. And the surface quality & dimensional accuracy of the tubes is improved apparently. According to the detailed condition of the tension reducing mill including the rolling force, rolling speed and pipe diameter, adopting composite cemented carbide reducing mill roll ring can acquire high performance.
The Machining of 3-Dimensional Cemented Carbide Roll Ring
Cemented carbide 3-dimensional roll ring with high binder content can be grinded or turned by CNC machines. Cutting Materials: cubic boron carbide (CBN), poly crystalline diamond(PCD)Rotating speed in turning: 16-30n/min; Feed rate: 0.10-0.20mm/n; Depth of turning: 0.2-1.5mm Cooling: cooling is required for turning with PCD, cooling fluid should be applied before turning operations and should not be
interrupted. Regrinding allowance: Radial regrinding allowance is 0.6-2.0mm depends on the roll ring stands, rolling load, cooling condition and tonnage to be rolled.
Installation and Application of 3-Dimensional Cemented Carbide Roll Rings
A small clearance fit or interference joint is recommended between the roll rings and roll shafts to avoid slipping between each other. For installation, the preheating temperature for roll rings shall not exceed 280℃, otherwise it will reduce the performances of roll rings. Good cooling effect can defer the abrasion of the roll ring and improve its lifetime, therefore reduce the frequency of roll ring alternation. The water pressure required is 0.2-0.4Mpa and the water flow rate is 20- 40m³/h.
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Kocks Cemented Carbide Roll Rings
The Introduction of Kocks Cemented Carbide Rings
Kocks cemented carbide roll rings is used for a rolling mill with three roll rings arranged at an angle of 120 °to each other, also known as Y-type rolling mill. Its basic features are as follows:
Kocks cemented carbide roll ring
The wide allowance of the pass is large, and the rolled piece is not easy to be folded during rolling.
Because the rolled piece is surrounded by pressure on three sides, the deformation is uniform, and the cleavage is significantly reduced,which eliminating the steel stacking accident of continuous rolling often caused by cleavage.
The pass extension and the wear of each hole type are both uniform.
A set of pass patterns can adapt to the rolling of different steel grades
Compared with ordinary rolling mills in the case of the same area, the groove depth of the roll ring is small, thereby reducing the wear of the groove and improving the quality of the rolled product.
Kocks cemented carbide roll rings also called 3-dimensional Cemented Carbide Roll Rings,which are used for Hot Rolling Steel.
Kocks cemented carbide roll rings for Kocks three-roll mill is to replace the original ball-milling of cast iron roll ring,mainly the production of bearing steel,spring steel,alloy steel and other special steel. The steel surface and tolerance controls are clearly better than cast iron roll ring and wear-resistant is good,life is a cast iron roll ring 10 times.
The lifetime of the cemented carbide roll ring on tension reducing mill is longer compared with common cast iron roll ring for hot rolling mill. And the surface quality & dimensional accuracy of the tubes is improved apparently. According to the detailed condition of the tension reducing mill including the rolling force, rolling speed and pipe diameter, adopting composite cemented carbide reducing mill roll ring can acquire high performance.
The Machining of 3-Dimensional Cemented Carbide Roll Ring
Cemented carbide 3-dimensional roll ring with high binder content can be grinded or turned by CNC machines. Cutting Materials: cubic boron carbide (CBN), poly crystalline diamond(PCD)Rotating speed in turning: 16-30n/min; Feed rate: 0.10-0.20mm/n; Depth of turning: 0.2-1.5mm Cooling: cooling is required for turning with PCD, cooling fluid should be applied before turning operations and should not be
interrupted. Regrinding allowance: Radial regrinding allowance is 0.6-2.0mm depends on the roll ring stands, rolling load, cooling condition and tonnage to be rolled.
Installation and Application of 3-Dimensional Cemented Carbide Roll Rings
A small clearance fit or interference joint is recommended between the roll rings and roll shafts to avoid slipping between each other. For installation, the preheating temperature for roll rings shall not exceed 280℃, otherwise it will reduce the performances of roll rings. Good cooling effect can defer the abrasion of the roll ring and improve its lifetime, therefore reduce the frequency of roll ring alternation. The water pressure required is 0.2-0.4Mpa and the water flow rate is 20- 40m³/h.
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