Company name: wuxi tianfeng metal products co. LTD
Address: no. 39, zhenze road, huazhuang street, economic development zone, wuxi city, jiangsu province (old factory area)
Address: no.210-2, chengnan road, wangzhuang industrial supporting area (new), new district, wuxi city, jiangsu province
Contact person: +86-1377 1199 895
Ring forging roll performance, tianfeng metal to introduce
The roll is different from the general structural parts, the working conditions are complex and diverse, the roll body in the rolling process to bear a high stress, mainly bending stress and friction, the main drive roller also bear a huge torque. The surface of the roller body shall bear the fatigue phenomenon caused by friction, wear, impact, contact stress and heat shock for a long time. Therefore, in addition to the conventional mechanical properties, a variety of rolling mills on the performance of the press roll put forward a series of special requirements different from other forgings.
1. Fracture resistance. The ability of the roll body and neck to withstand working stress without transverse fracture. For the specific conditions of use, the main point is that there should be enough strength and toughness, and there should be no manufacturing defects that may lead to fracture.
2. Wear resistance. The resistance of the working part of the roll body to weight loss or size reduction during rolling. It should be noted that the wear resistance of rollers in hot love and in cold state is not necessarily the same.
3. Spalling resistance. The ability of a roll under contact stress for a long period of time without dropping of the roll body.
4. Resistance to thermal cracking. The working rollers for hot rolling are subjected to the thermal fatigue induced by the chilling and heat excitation from the rolled material and the coolant.
5. Thermal impact resistance. When the working roller bites the hot billet, the surface of the roller will heat up rapidly locally or the surface of the roller will heat up violently due to friction in case of steel stuck.
In addition, there are anti - roughness, bite and so on. For a specific roll of a specific mill, its performance requirements will be focused on, and sometimes requires a combination of several properties.
It needs to be clearly pointed out that the above mentioned various performance is for the specific working conditions, so are relative concepts.