Accompanied by in the metallurgical trade to melt development at a high speed, in order to meet the demand that steel products for building is increasing constantly, every index of working to the high line rolling mill requires higher and higher. Because of high the intersection of line and particularity that rolling mill work, put forward stricter requirement to bearing spent to buy. This text, on the high-speed wire rolling mill bearing hereafter referred to as the high line rolling mill bearing Why can did performance characteristics employed in the metallurgical trade do the simple introduction.
High dependability is the most prominent characteristic of rolling mill work of line. Because the output is high, have higher dependability than the bearing of the general rolling mill as the high line rolling mill bearing of key component on the rolling mill. If because the bearing breaks down to cause the whole production line to stop production, this is what a producer can’t tolerate. So while designing, making the high line rolling mill bearing, should guarantee it operates the dependability of the continuous work under the condition at a high speed. Run under high rotational speed, heavy load for a long time, it will be a severe test that it is hard-wearing to the bearing. The high line rolling mill bearing supported must be hard-wearing and high that this demands, can adapt to the working occasion of rotating at a high speed. In normal cases, high the intersection of line and the intersection of rolling mill and bearing that offer abroad use three year because half of the intersection of time and assembly of the roll want the unloading machine to maintain, rebuilt, actual working time is one and a half years ,So users expect much the long rolling mill bearing fatigue life of line, and the high line rolling mill bearing which all happy accurate bearing Co., Ltd.s of Luoyang produce can totally reach the standard and exceed foreign service life. The impact toughness of the high line rolling mill bearing is on good terms, the bearing that the especially thick rolling mill uses, will cast the square base to roll in the course made into the excellent material in succession, will assault the load very largely. So high line in high rotational speed, high to bludgon into under the state working, should break the phenomenon in the intersection of rolling mill and bearing.
In sum, it can be in the high rotational speed that the performance characteristics of the high line rolling mill bearing is, assault the continuously stable and reliable work under the state high, and possess longer fatigue life.
Because our country is relatively late in the construction period of high line rolling mill bearing, rely on import for a long time, in order to further develop and adopt the high line rolling mill bearing, stablize its performance at a higher level, relevant experts think that should carry on the work from several following respects.
1.Recommend according to the documents and materials, smelt the of good performance new rolling mill bearing out and use the steel specializedly on the basis of testing, studying, including carburization bearing steel and high-carbon chromium bearing steel.
2.On the basis of analyzing, studying, comparing the like product, confirm the main parameter according to the operating position of the bearing, do a good job of the product design. In addition, the structure to the part is changed, for instance the arrangement, separating shape,etc. enclosed of the hole of the trough can’t be ignored either.
3.Launch the craft and tackle key problems, in order to remedy the material performance reality of the relatively not good enough and equipment with relatively backward ability. Rub, pare, guarantee, carburize layers of depth and hardness homogeneity effectively in heat treatment especially, make impact toughness and shape location tolerance and surface roughness of the part of the part within the range of certain precision with high-carbon chromium steel.
4.Make normal and detailed installation, debugging, maintain and hand over the manual item by item; Send technical staff to users, explain the attentive matters of use of bearing for on-the-spot technical staff and worker, answer the question that on-the-spot personnel put forward, do the services after sale well. Users need to cooperate with the bearing producer well.
