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Big excavator forearm craze? Rapid welding repair cracks

by:J&D WATER     2020-03-29
Excavator forearm cracking is a lot of problems to dig the friends, whose excavator main working parts, basic every action force, while the modern iron and steel smelting technology is very developed, but not under the action of forces for a long time still can guarantee not deformation, tear and wear of the steel. So what is the specific causes craze? And how can we repair? There are many reasons result in the crack of the big excavator forearm. A, adopted beyond the scoop of original bucket volume. Such as a 10 t excavator with more than 20 t scoop, can cause large forearm abnormal work overtime and cracking, so each model should be used with the original corresponding bucket volume scoop. Second, the pilot operation way is wrong. Dig hard heavy overexert, strong hard to dig, the drivers used as a crane, lifting heavy objects such as are the cause of large excavator forearm cracking. Third, continuous work load is too large for a long time, fatigue damage, especially to work in mines, large forearm craze is common, do not overload for a long time. Mining workload is big, cause the excavator parts are possible so big excavator forearm craze? A, welding welds must be removed before; Second, must carry on the certain preheating before welding; Third, welding must choose proper welding material; Four, must ensure that when welding penetration; Must be clean before welding, that is, to take away the original craze welding meat, use photograph grinder to grind or conditional use carbon arc air gouging, but after the plane must clean the iron oxide. May also need to preheat 100 degrees in welding position. Then with diameter 3. 2 j507 welding rod welding, welding was soon stopped, with a hammer percussion welding seam and the weld edge, to be completely after welding have been use hammer, basic cooling until the weld. Purpose is to release the welding stress, because can not do heat treatment after welding. If must ensure that the weld penetration, when welding the weld position gap big can add back in there. Electrode model is very important. If you want to know what material the test have to take some scrap iron, a test came out, and then according to the electrode into distribution. J507 welding rod with enough, the tensile strength of 50 kg, it is a kind of structural steel. If you use before 507 and can guarantee penetration and crack, suggest you change J607, should will be enough. Overall, since each drivers fracture situation is different, we give an example of the following, basic can explain most of the cases. Step one, the breakup cut around each side panel 180 mm to 200 mm, cut back the cover plate to the side panel below based on the width of the cut to about 150 mm. The blue part of the figure for the side panel cut part, red for the next plate cut off part. Step 2, under the broken plate play lining, good welding, plate crack was also good welding. Welding process should be smooth without air bubbles. Third step, after welding, according to the step one cut off the blue part of side panel, cutting a piece of iron plate welding, according to the size and the lining inside. Lining board than seal up the side panel. Step 4, after completion, shangbu bad no seal on the bottom cover plate and the back cover, or play lining board, why play plate? How old a plate? Lining board is simple, brutal and effective. The following figure, after the sealed liner board and floor, repair work completed. The next stage is to burnish, fill the paint on the putty. Metal laser welding equipment recommendation: preferential deals offer 4007001618 【 Metal laser welding equipment 】 Suitable for all kinds of complex welding, the welding of different equipment and 1 mm thick seam welding; Multi-channel fiber optic mode, welding transfer at the same time; 【 Mould laser welding equipment 】 Applicable mould industrialized, used for precision mold repair, such as digital products, mobile phones, toys, automobile, motorcycle, mold and other mold manufacturing and molding industry. 【 Gold and silver jewelry laser welding 】 Mainly used in jewelry, such as electronics, communications, handicrafts and other industries; 【 Large laser welding 】 Application in automobile body covering parts of compound, such as car door, side wai, window, floor, warehouse, the warehouse before, trunk lid. More metal welding equipment welding repair laser welding
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