During cold rolled production of steel, each change of rolls causes a halt in production and affects the roll＇ s grinding maintenance and consumption. Consequently,rolls are very critical to the costs of steel produc...During cold rolled production of steel, each change of rolls causes a halt in production and affects the roll＇ s grinding maintenance and consumption. Consequently,rolls are very critical to the costs of steel production. Besides the rolling accidents, surface quality problems, including inhomogeneous wear and a decrease of the surface roughness of the rolls are other main reasons for outage and a change of the rolls. Therefore, safe rolls, with superior wear resistance and roughness retentivity will be a future trend in the cold rolling steel industry. In this study, the property characteristics and in-service performance of high-speed steel （HSS） cold rolling work rolls at Baosteel are discussed. The results of this study indicate that in-service performance of HSS cold work rolls has an improvement over conventional rolls. Implementation of HSS work rolls will prolong the rolling campaign and improve the rolling stability, thus, the cost of cold rolling production can be better controlled.展开更多
Considering the actual operating experience of the Daode Wind Farm, this paper analyzes the rea-sons for the fault of the lO-kV switch cabinet. Some technical improvements and management measures, such as implementing...Considering the actual operating experience of the Daode Wind Farm, this paper analyzes the rea-sons for the fault of the lO-kV switch cabinet. Some technical improvements and management measures, such as implementing the anti-accident technical measures, improving the installation and debugging level, and strengthening operation inspection, are proposed.展开更多
文摘During cold rolled production of steel, each change of rolls causes a halt in production and affects the roll＇ s grinding maintenance and consumption. Consequently,rolls are very critical to the costs of steel production. Besides the rolling accidents, surface quality problems, including inhomogeneous wear and a decrease of the surface roughness of the rolls are other main reasons for outage and a change of the rolls. Therefore, safe rolls, with superior wear resistance and roughness retentivity will be a future trend in the cold rolling steel industry. In this study, the property characteristics and in-service performance of high-speed steel （HSS） cold rolling work rolls at Baosteel are discussed. The results of this study indicate that in-service performance of HSS cold work rolls has an improvement over conventional rolls. Implementation of HSS work rolls will prolong the rolling campaign and improve the rolling stability, thus, the cost of cold rolling production can be better controlled.
文摘Considering the actual operating experience of the Daode Wind Farm, this paper analyzes the rea-sons for the fault of the lO-kV switch cabinet. Some technical improvements and management measures, such as implementing the anti-accident technical measures, improving the installation and debugging level, and strengthening operation inspection, are proposed.
