Preparation and installation process of copper bar welding before installation

Preparation before installation: Before installing copper bars, we should be familiar with the construction drawings and check them on site. It is an important step to see if the site meets construction conditions. If you do not have the corresponding conditions, we should find a way to create construction conditions, to be able to make this product play a good role. At the same time, it is necessary to prepare the accessories and materials needed in the construction process, including the measuring tools needed in the installation process, such as electric hammer, etc., which need to be prepared in advance, so that the construction can be completed more smoothly.

We do not know what to do with the copper bars left after the production of water-cooled transformers. Before, they were directly lost. In fact, these copper bars can be welded by gas welding in use. Now let us know how to weld the segmented copper rod: Because copper bar is used in water above the transformer, so the welding joint quality have corresponding requirements above, can't have a water leak, joint shall be no burr, inside the tube can't webbing, flash and jam, otherwise may cause short circuit of transformer, the inside of the tube water can circulate freely, don't let to the coil temperature is too high. Silver alloy wire can be used to fill the welding joint quality.

The method of welding began by sawing the ends of two copper rods flat, clamping one copper rod, heating it with an oxyacetylene flame, enlarging the end of the tube, inserting the other rod, and holding it in place with a clamp. It's being tightened with asbestos rope to keep the heat in. Use the remaining oxide flame, keep the flame core at a proper distance from the workpiece, and the wire and torch should be perpendicular. Add powder to the end of the wire and sprinkle it into the pool and over the edge of the weld. The solvent is 70 to 80 percent borax and 20 to 30 percent salt. When the welding place temperature to starve 550 to 600 degrees, in the use of cold water to lower the temperature, fine grain, so that the joint has good plasticity. Then the welding place is filed and polished with gold steel sandpaper.