ugg boots Small talk process pipe welding _3811

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Small talk about the welding process piping

, Beginning with the initial setting,[link widoczny dla zalogowanych], the re-ignite the arc. Tangent angle with the tube electrode, shown in Figure 6. Level of fixed tube welding is a key component of Yang-welding parts. If the electrodes sent deep enough, the back there will be concave, so be sure to pay attention to the depth of the electrode feeding. Weld welding current is usually higher than 15% -20% when the small, but should remain stable arc, but also a certain wind force, to maintain the shortest arc length of the droplet in order to ensure a smooth transition to the pool to go. In the vertical position welding parts, welding rod end arc about 1 / 2 in the pipe burning, slightly larger than the magnitude of lateral oscillation, and its diameter is equal to or slightly larger than the diameter of the electrode (ie, .5 mm). Peace on the hill in the welding position, electrode to the outside out, about 1 / 3 arc burning in the pipe. In backing weld, we should note that: Every time a new electrode arc root before l must be polished with a grinding wheel machine fitting into the gentle slope of about lOmm, end the thinner the better. Backing weld to be completed at the confluence of the joint area, should be completed by end of the ramp-shaped with a grinding machines grind, weld joints to be welding the edge of melting 2-3mm, it will be under pressure welding, arc welding breakdown roots, a little swing, seam 15mm lap around the original can. 2.2.2 fill weld welding welding, you must use the wheel on the backing welding machine residual Figure 5 Figure 6 for a stay of 35 welding slag removed one by one, and will hit the bottom weld smooth. Fill weld with the welding arc transported by reverse Tsukigata article, a brief stopover on both sides of the middle transition slightly faster than the horizontal bar so jagged shipped to more easily transported undercut article, especially for rotating welding, transport speed of uniform section agreed to maintain the level of formation of the same bead. Filled above the base metal weld 0.5mm. 2.2.3 Prior to cover up welding use the same polishing wheel machine will weld clean up. Welding arc with lateral transport section with serrated, a speed appropriate to speed up operation,[link widoczny dla zalogowanych], the current into the faster, the two sides to a brief stopover to prevent undercut. To avoid excessive weld joints, the joints should be ground,[link widoczny dla zalogowanych], welding, weld joints before overshadowed l0 ~ 15mm. Core welding electrode to reach swing groove far, both sides of the melting l ~ 2mm, the last filled crater in the post-extinction. Pipeline construction in the chemical industry, 60% of the weld to turn the weld, that is, both ends of the nozzle is free to rotate back and forth. Just turn the welding operations are actually carried out the side of the overhead position welding nozzle, rotating welding and welding of the operation, as shown in Figure 6. Because in this rotating welding parts, slag and molten iron can be separated easily, does not produce slag, welding backing,[link widoczny dla zalogowanych], easy to complete penetration. Turn the welding operation should pay attention to: ① backing off when the use of welding, to prevent the bath temperature is too high; ② fill welding, the use of anti-crescent section operation, using gravity to make the liquid metal bath drip to the sides, prevent the occurrence of undercut. \In the software development process, the use of OOP (object-oriented programming) and design principles, build the user interface, with a strong man-machine conversation, user-friendly features. The software calculated with reference to concrete mix steps to a \The use of 30 software modules, each module independent of each other, and each other. Depending on the design requirements, through the choice of options, the designer generated after calculating the required ingredients list. In the variable input, the computer can identify the input data to determine, if the input data in a logical error or out of the scope of construction used, the computer will prompt an error for correction. \ash content, super on behalf of the coefficient, relative density, progression and other specific data, and sea water, fresh water, water, underwater, water level changes in areas such as cold environment, the computer that is able to automatically calculate the concrete mix, and details Display per m. Concrete in the amount of various raw materials. Calculation process, the water-cement ratio, cement content requirements of the specification can result in the maximum and minimum allowed value is automatically adjusted, and to the prompt. \In the on-screen prompts to install under Windows9X. When the installation is complete, the system automatically generates a \Under the \The software can be used Windows9X \Wu Liang AVIC II company three 36 and one port of a Technology and Management Engineering No. 5 2002

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