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Wysłany: Czw 1:10, 06 Sty 2011
Temat postu: Yuxi bulb type units produced _2149 Tail cone
Yuxi bulb type units produced Tail cone
Class I weld requirements. 3. Welded flange and cones in the cone flange assembly line of position on the draw, will be well in advance of the two and a half point to defend the cone and flange connection. Well be reinforced so that I temporarily conical tube 62 into a whole. And a half at the painting with a paint marker temporarily welded to prevent the wrong welding, I check the cone size of the assembly requirements of the map and do the preparatory work before annealing. Divided into two half-opened into the annealing furnace. The pad level 4. Treatment: To prevent stress on the Falanjinjia workers welding deformation. The whole to be conical tube annealing, Yilin company tailwater fire cone design drawings messy process parameters: annealing temperature of 600 ℃, holding time 2h. Heating rate of 3O ℃ / h. Cooling rate of 30 ~ c / h, the maximum tapping temperature 150 + C / h. The total annealing time of about 35 hours. We annealed according to specifications and the accumulation of years of experience in the development of the annealing process following annealing curve. Practice shows that can effectively eliminate the welding stress and save time (about 12h), to reduce costs. Annealing process description 11) from room temperature to 300 \2) From 300 ℃ to 600 ℃, heating rate is 3O_c / h. 3) 600 ℃ constant temperature line for 2 hours. 4) from 600 ℃ to 300 ℃, cooling rate of 3o ℃ / hour. 5) 300 ℃ the following with the furnace cooling. 6) temperature recorded every 2O minutes. 7) released the temperature is less than 150 ℃. 5. I machined cone 1) by a half cone size combined before annealing, and found a tube with a flange position that local excessive deformation, annealing, stress stiffening angle actinium leaving the original spot to crack, lead to distortion, because the point where the weld length, height is not enough cause. After a little processing to meet local requirements, are ideal for the rest of the size and dimensions of the processor crossed,
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, crossed the door pass the inspection by the technologies, the open side with a combination of boring and milling machine to shape processing, and accounting for a good pin and screw Hole 2) the combined half-cone bolt works,
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, marked with pin holes, fitted with tapered pins. 3) the cone of the whole car to get in bed, adjust the center and the vertical flange. The flange surface and the turning circle, and the car out of a threaded hole machining position OOIIm Station Electrical Technology 4 line. 4) CNC Gantry Milling Production 1 / 4 arc template, followed by a model with g16, 37ram drill 96 drilled in the flange hole. 5) out of attack with 96 M42 threaded tap hole. Fifth, the production of tail water quality tail cone of cone production of water quality,
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, the supervising engineer checks by Austria Yilin company standards. To achieve good grades, the process of methods used to give a higher rating. Three crew decided to adopt Shuaixia rack layout program - and the ratio of the thrust bearing thrust bracket on the rack is secure under the \Commission and the Ministry of Machinery and Technology Development Fund jointly funded by the Commission, \decided to use a secure program under the rack. Three units can be arranged in two ways, the egg placed under the rack thrust bearing or thrust bracket. The latter has the advantage of higher economic Yan reduces unit height of 2; 3m; but the force of the negative light than the complexity of the transition process, and because of the larger shaft diameter (3.2m), may need to consider maintenance issues. The main advantage of the former is secure. Three units are eligible to participate in overseas bidding companies, the Russian power, advocated by Japan's Hitachi and other ancient Compilation Cream Chong force drug. Add all persons CGF, head plate. Quan Xin Si l1 funeral claims under the rack with side Die. I think Germany d Siemens both. Practice has proved that the two programs in design, manufacture, installation, operation and other aspects of successful experience. In the course of the study, mainly for two schemes to demonstrate the economic and reliability analysis, the calculation of the unit structure, calculation of the vertical and radial stiffness, shaft vibration analysis, unit cost, installation costs, plant investment accounts, selected 3 shaft vibration analysis program and the New unused vertical shaft natural frequency analysis program, take into account the rotor gyroscopic effect, shear deformation, the bearing stiffness, etc., for the critical speed of the two program units, spindle diameter to vibration, vertical vibration and stability of the two programs on the machine, the installation process of, can be superficial repair,
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, running on the Reliability of a detailed analysis of two programs on the radial vibration is not very different, but inter-axis vibration,
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, the next rack program also has obvious advantages. Sun Shuqing, the motor 63 Harbin
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