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 Posted: Fri 10:56, 07 Jan 2011 Post subject: ugg prezzo Shanghai Baoshan Iron and Steel Company |
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Shanghai Baoshan Iron and Steel Company for a 1780 hot-line roll grinding technology and application
km or more, up to continuous rolling 161km. To 2005,3 the ORG table 12004,12 application data 4ORG control strategy in accordance with the hardness of rolled material, with a few km wide and rolled to determine how much of each coil rolling mill and after a poor section of grinding rate. Based on actual usage, to optimize the control strategy on the ORG. 4.1 under conventional rolling production 0RG conventional control strategy, rolling steel, stainless steel ORG control strategy in Table 2. Rolled carbon steel, when the same rolling km wide and more than 50km, you can adjust the coil spacing according to the site or use the number of poor section grinding method. Under normal circumstances rolled carbon steel, F5, F6, F7 chassis ground segment deviation were 35%, 30%, 30%; rolled stainless steel, F5, F6, F7 poor section of the rack rate was 45% ground , 40%, 40%. When rolled thin gauge product,[link widoczny dla zalogowanych], if it had not used ORG,[link widoczny dla zalogowanych], will have the rolling chassis prior to F5 ~ F7 to conduct a comprehensive ground 1 to 2 times the amount of each grinding was 10vm; in thin gauge rolling late in the roll Non-pass board area will also have wear and tear, so the latter part of the paragraph in poor rolling mill planned to meet the rolled metal section 27 26 Shanghai-rolled thin strip by the roller pressure requirements. Table 4.2 Table 2ORG control strategy under free rolling free rolling ORG control strategy (the width of anti-jump), the ORG in Table 2 corresponding to the model based on the ground,[link widoczny dla zalogowanych], and then use the section of poor grinding method, F5, F6, F7 rack poor ground segment ratio by 100%, 90%, 90%. To note that the question should be slowed wood rolling rhythm, the proposed interval of at least 5min, the central aim is to roll with the temperature close to the edge. Same time to ensure flatness, the width of the first rebound of a material thickness of not less than 3mm. ORG 4.3 Control Strategy exceptional circumstances such as occurred in the rolling surface drift phenomenon or a small strip surface defects, you can use the full roll mill to remove the sticky surface of iron and a small shallow pits, without having to roll change . Generally appropriate to conduct a comprehensive ground rack 1, grinding capacity of 10 / ~ m. Yan Mo content should be based on the surface quality of test results to determine the severity tail flick, when the total Yanmo is large, can be solved by increasing the polishing times. General choice of rolling ground clearance, this time rolling rhythm should be slow, grinding, etc. then be out of steel. 5 Conclusion line roll grinding (ORG) technology as an effective roll profile and quality control of the roll surface means of steel production is extremely important. A 1780 hot-rolled steel company's compliance under the specific circumstances of the production characteristics of the control strategy has achieved good results. The future will be based on a high proportion of DHCR and mixed steel rolling characteristics and other production processes, and control of the ORG model control strategy for further optimization and improvement to enable the technology in the production of a greater role to play. References: [1] Zhang Qingdong He Anrui and so on. Hot strip shape control and free rolling. Iron and steel. 2001. (2): 7275 Revised closing date :2005-03 .02,. 'Information:. L. . . . . Hot steel surface defect inspection equipment, a Swedish company manufacturing a can check about 1000 ℃ steel and other metal plates and billet surface defects of equipment. Online Check out the flaws can be immediately repaired heat stripping method. Commonly used technique is to plate to cool to room temperature, then a manual inspection, grinding out the defect. To the hot rolling, but also re-heating. Therefore,[link widoczny dla zalogowanych], the device developed in Sweden, you can save a lot of energy. This new device is designed based on eddy current technology. Current steel surface defects will occur disturbance, the disturbance detection coil can detect them all. Sensor component of the device to pick up by the eddy current device composed of a few, all to pick up on the rotating disk device, the wheel on the steel surface to be scanned. Dial into a zigzag layout, it will ensure that the two steel surfaces are almost perpendicular to the direction of scan. Each turntable connected to an analog circuit, for transmission to the eddy current coil, but also changes in order to determine the complex impedance. These analog circuits into eight figures with various defects,[link widoczny dla zalogowanych], these data into the composition of micro-analyzer calculator. Analyzer to the input information in three main categories: serious flaws in the defect and did not recognize the sound. The first message is the focus of the signal can determine the type and size of the defect. Calculator linked to the detection coil through the defect into a hypothetical signal to control the entire device. The device can display the characteristics of this signal, it can find any fault location. This device accurately measured 0.5mm deep rough surface notch position. Rong From ((_MeTazmypr} 2004 No. 9
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