The current Larsen steel sheet pile length of 6 meters, 9 meters, 12 meters, 15 meters, 18 meters and other more common Larsen steel sheet pile, of course, can produce a longer Larsen steel sheet pile, but if the Larsen steel sheet pile If the length is too long, it will become a problem in transit. So we need to use in some large Larsen steel sheet pile coffers more than 20 meters long Larsen steel sheet pile is generally used Larsen steel sheet pile long welding, and the following we have to talk about is about Larsen steel sheet pile What are the requirements for long welding? Take a look at it
1、Larsen steel sheet pile butt welding is generally two or three Larsen steel sheet pile as a group of docking, must ensure that each group Larsen steel sheet pile with the width, the lock is straight and parallel, not twisted, Larsen steel sheet pile does not bend Or mutations.
2、in the site of the production of fetal frame, so that the tire must be vertical and in the same level;
3、Larsen steel sheet pile after welding length shall not be shorter than the construction requirements, and a welding after the Larsen steel sheet pile shall not be more than three joints;
4、Larsen steel sheet pile welding material baking, storage and use, according to "welding material storage requirements" implementation;
5、Larsen steel sheet pile length welding length after docking, the construction time to ensure that the welding joints staggered up and down, reducing the overall force in the same joint risk. For example, after welding is 30 meters long Larsen steel sheet pile, to make a 14m welding joints on a 16m section on the staggered joints. If the Larsen steel sheet pile length welding joints are in the same position, easily lead to the lower part of the Larsen steel sheet pile joints due to the overall fracture or deformation can not pull out.
6、Larsen steel sheet pile before welding, must use the grinding machine on the groove and groove on both sides of the width of 20mm wide range, the fillet weld width in the direction of the width of both sides of the width of 20mm, remove the oxide, water , Oil, dirt and so on.
7、Larsen steel sheet pile docking, straightening is a key process, steel plate pile straight deviation control in the 0.1% range;
8, reinforced plate using the ship plate, length 500 * width 200 * thick (14-18) mm Han Tong scrap board yard of the hull board, each pair of joints, with four reinforced plate, positive and negative sides of the two;
9、Larsen steel sheet pile on the seam double-sided welding, lock parts to avoid welding without welding, steel sheet welding after the end of the weld must be welded, knocked out the welding slag and weld around the splash, and grinding with a grinder Smooth, check the weld appearance quality is consistent with the acceptance of quality requirements. To meet the requirements and then welded to strengthen the plate, strengthen the board after full of welding, knocking out the welding slag and weld around the splash, and then check the weld appearance quality is consistent with the acceptance of quality requirements.
10、then a good long welding after the Larsen steel pile pile stacked for the five groups, between the pile and the pile with a small wooden pad pad to ensure that the level.