Latest ArticlesThis paper mainly introduces new generation rail manufacturing equipment, its process characteristics and automation control level combined with the process characteristics and equipment characteristics of No. 2 universal rolling mill production line in Rail and Beam Plant of Baotou Steel. In view of the superiority of the equipment, through comparative analysis of the finished rail, this paper expounds the promotion of the product quality control and the finished product performance index, and fully affirms the guarantee ability of new generation equipment to product quality.
In the paper, the conceptual model of mine management work is constructed under the premise of studying contents of mine geological management by using Chekland methodology; based on the comparison of conceptual model and actual situation, the main problems are analyzed and summarized, and the methods and measures to effectively strengthen mine geological management are obtained.
At present, inspection of rail surface defects mainly depend on the way of artificial vision detection, but this way has many disadvantages, such as fatigable, slow detection and low detection rate. The rail on-line surface defect detection system obtains high definition rail surface images by high-speed and ultrahigh resolution digital image acquisition technology; the location of defects is accurately located by using image processing and detection technology; the defect geometry and gray feature are calculated by using modern artificial intelligence technology to classify and identify the defects.
The paper takes ore production management in Baiyunebo Iron Mine as the research object. Based on detailed analysis of ore production process system current situation in Baiyunebo Iron Mine, the uniformity and stability of ore is effectively improved through improving the ore construction and making rational ore blending measures by Baiyunebo Iron Mine, making full use of mineral resources so as to ensure comprehensive pass rate of output ore from Baiyunebo Iron Mine.
During the straightening process of H-beam, the rolling reduction of each straightening roll of straightener directly affects the residual stress and bending of H-beam. In order to reduce the residual stress and bending, meeting the national standard, the orthogonal experiment simulation is carried out on straightening process. According to the experiment, the effect of work rolls on the residual stress and bending of H-beam is obtained, and the optimal scheme for rolling reduction during H-beam straightening is found out.
The total station gradually replaces the traditional mine measuring tools with its complete function and simple operation. Total station has a variety of uses such as angle measurement, distance measurement (slope distance, horizontal distance, height difference), three-dimensional coordinates measurement, traverse survey, intersection fixed point measurement and setting-out survey, and the function can be further expanded after built-in special software. In the paper, it is briefly expounded the applications of total station in mine survey from aspects of control survey, detail survey, digitized mapping, stripping quantity survey, topographical map survey and a variety of engineering survey and so on.
Hydraulic servo system has the characteristics of large power, fast response and high precision, in which the hydraulic roll gap automatic control system, namely AGC system, is the typical representative of hydraulic technique application in all metallurgical equipment. The stability of system back pressure plays the key role in the action of hydraulic cylinder and the precise control of valve in AGC system, and through the transformation for oil supply way of system back pressure, from the valve relief for oil supply to the pump for direct transformation, makes back pressure is more stable in use.
Crusher bin is to store materials after crushing and enter the feeding bin through material self weight, playing a role of intermediate store, buffer and balanced operation and so on. As the production is large, liner wear is serious when materials are slipping, and replacing liner requires a great deal of maintenance time, and there is a certain safety hazard. Ensuring the normal operation of the system, design a better wear resistance and shorter replacement time liner to protect equipment at the same time to complete the rated output. The designed suspension composite liner is divided into wear plate and bottom plate, and needs a certain time to be replaced in early time but it just needs changing wear plate in the future.
In the paper, the problem of oil leakage in hydraulic system of rail stamping machine is analyzed, and the design defect on L oil tube of hydraulic system is analyzed by combining the site use condition and detailed calculation. The root cause of oil leakage in hydraulic system is found out, and the solution aiming at this defect is put forward: servo valve in hydraulic system is configured with the separate L oil pipeline to ensure that the return pressure of newly added L oil pipeline is basically zero. Thus the problem of oil leakage in hydraulic system of rail stamping machine for many years is solved.
In the paper, it is expounded the rolling mill house problems existing at present stage in Rail and Beam Plant of Baotou Steel after years of operation, and causes of rolling mill house corrosion are analyzed in depth. Through the comparison of various methods for rolling mill house repair, laser cladding technology is used to repair rolling mill house on line, and the operation condition after repair is summarized and evaluated.
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