01
2023-03
Preventive Measures for Fatigue Cracking of Rollers -- Management, Maintenance and Use of Rollers
(1) It is practically impossible to completely eliminate the residual stress on the surface of the roller after grinding. It is necessary to measure the hardness value of each pair of rollers before and after grinding to conduct long-term tracking and master the performance status of the roller. This is conducive to timely revision of reasonable grinding processes. In addition, when the normally rolled roll is unloaded from the rolling mill,
2023-03-01
01
2023-03
Application of Simulation Technology in Roll Development
The purpose of simulation application is to improve process technology methods, improve product quality, master the process of cold bending molding, reduce roll repair and modification design, and save production debugging costs. The simulation of cold bending forming process cannot be separated from the experience of roller designers and the installation and debugging process of forming equipment. The simulation without experience and process knowledge of cold bending forming process is meaningless and can have serious consequences in practical applications.
2023-03-01
01
2023-03
An improved roller cooling and gap lubrication device, an improved roller cooling and gap lubrication device, belongs to the technical field of rolling mills. Used to solve the use defects of existing devices such as uneven lubricating oil film and easy mixing with residual cooling water. The composition includes upper and lower water cutting plates located at the entrance of the roller gap, c
2023-03-01
01
2023-03
Elastic deformation analysis of roller
The main factors affecting the elastic deformation of the rolling mill are: roll bending, memorial archway deformation, roll flattening, deformation of other parts and compression deformation of hydraulic cylinder and liquid in the cylinder. The first three items account for the majority of the rolling mill elasticity, and the roll deformation accounts for the largest proportion of these three items. The roll bending and roll flattening can be solved by using the roll elastic deformation theory [1, 10] · For the roll deformation of ordinary four high rolling mill, the following assumptions are made:
2023-03-01
01
2023-03
A Quick Method for Repairing Rollers
The roller has super strong adhesive force, excellent compressive strength, wear resistance, and corrosion resistance, and other inductive functions. The use of polymer composite materials can avoid disassembly and correction on site when the wear specification of the transmission part is relatively small, which not only avoids mechanical processing, but also avoids the thermal stress and heat impact of repair welding.
2023-03-01
01
2023-03
Analysis of the causes of roll breakage on the rolling mill
The causes are related to the residual stress of the roller itself, the mechanical stress during rolling, and the thermal stress of the roller, especially when the temperature difference between the surface and the core of the roller body is large.
2023-03-01
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