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Welding method of sheet metal structure processing

Release time:2021-04-26 10:27popularity:
        With the development of China's industry, some construction sites use excavators. I believe we are not unfamiliar with excavators, because we can see excavators everywhere. Many parts of excavators are made of sheet metal structural parts of excavators, because sheet metal structural parts processing is relatively simple, which can meet the needs of our excavators. Now let's take a look at the processing steps of sheet metal structural parts. Let's take a look at how sheet metal structural parts of excavators are produced. One step is cutting. When we get the sheet metal, we have to cut it to the right size. We must be careful when we cut and try to fit. Then we have to do the cutting work. Cutting action is relatively large, so cutting must be very accurate, grasp the strength. Don't cut the whole surface after cutting too much. The sheet metal structure of excavator can't be used any more. After cutting, it can be observed whether it is suitable. If it doesn't fit, you should continue to cut. The other step is folding. A metal plate is a flat material. Sometimes we need to fold them into different shapes. We need more shapes. Sometimes we need more curve shapes. At this point, we need to fold them. We should be very careful when folding, because the metal plate is very sharp and may hurt our hands. Only in this way can the metal plate parts become what we need. After folding, you can finish the work and handle the corners, which will be more complete.
        The processing of sheet metal structure involves many technological processes. Next, Xinsong will introduce some process knowledge to you. Wire drawing: refers to the use of wire drawing machine and abrasive belt on the surface of a grain processing technology. Drilling: refers to the process of drilling a workpiece with a drill on a drilling or milling machine. Chamfering: it refers to the sharp angle of workpiece processed by mold, file, grinder, etc. Leveling: refers to the process of leveling the workpiece with other equipment before and after processing. Posterior teeth: it refers to the process of secondary thread restoration for the workpiece with teeth in advance. Sticking protective film: the process of protecting the surface of the workpiece with a film that can protect the surface of the workpiece. Tear protective film: refers to the cleaning process of the protective film on the surface of the workpiece. Shape correction: refers to the process of adjusting the processed workpiece.
        Welding method of sheet metal structure processing. Double sided single point welding. All universal welding machines adopt this scheme. It is suitable for small parts and large parts around the welding point. Single side single point welding. When the accessibility of the electrode on one side of the part is poor or the part is large and the secondary circuit is too long, this scheme can be adopted. When feeding from one side of the weldment, copper pad should be added on the other side to reduce the shunt and act as the fulcrum of the reaction force). Single side double spot welding. When feeding from one side, two points should be welded at the same time to improve productivity. The phenomenon of invalid shunt often occurs in single side feeding, which wastes electric energy. When the distance between points is too small, welding will not be possible.
         Knowledge of sheet metal structure maintenance. After the metal plate structure has been used for a period of time, it should be cleaned and overhauled once. When cleaning sheet metal structural parts, clean the interior with hot water and blow dry with compressed air to remove the gasoline vapor inside the sheet metal structural parts. If the outside of the sheet metal structure is rusty, clean with a wire brush and then paint. After the metal plate structure is cleaned, the tightness should be checked. During the inspection, all orifices of the sheet metal structure shall be plugged with rubber plugs, and then immersed in water to input compressed air from the oil pipe joint hole. If there's a bubble in one part, it's the leak. At this point, mark the leak and weld after the paint is removed. When repairing, different welding methods can be used according to the size and location of leakage. If the leakage is small, it can be repaired by soldering; If the leakage is too large, repair welding can be carried out; If there is a crack at the joint of the upper and lower half shell of the steam sheet metal structure, remove the sheet metal structure cover and the end cover of the oil meter sensor float group before welding, and fill the sheet metal structure with cold water.
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