electric furnace knotted material construction method
When using the electric furnace, the knotting material is a very important process step. Today, Hongteng editor will introduce some good knotting material construction methods to you.
First of all, we need to build the bottom of the furnace. Fill the bottom of the furnace with the asbestos cloth and add the mixed crucible material. After tamping with an air pick, the thickness is 80-100mm. Rake the surface and add another layer. 40-60mm building charge, and then tamping.
Repeat these operations until the building charge reaches the specified height. (It is flush with the induction coil of the second layer at the bottom, and the thickness of the furnace bottom is 150-180mm).
After the bottom of the crucible is knotted, put on the crucible mold (welded with 5-8mm thick steel plate to form the inner shape of the crucible), set the position so that the center of the crucible coincides with the center of the induction coil, and correct the center position.
Place three wooden wedges at a 120-degree orientation to prevent the crucible from skewing, and place a weighted iron or heavy object in the crucible to fix it to prevent the mold from being lifted when the furnace wall is hit.
To build the furnace wall, first rake the bottom of the crucible, add a layer of 40-60mm charge, and use a tamping machine and a flat hammer to carefully lining the furnace bottom and the corners of the furnace wall. Then use a tamping machine to tie the furnace wall in multiple layers: first rake the furnace lining between the crucible mold and the asbestos cloth, add a layer of 40-60mm thick mixed charge, and ram it with an air pick (be careful not to touch it). Broken asbestos cloth to avoid leakage).
After tamping, loosen the surface, add a layer of 40-60mm thick mixed charge, and tamper with an air pick, and repeat until it is flush with the top of the crucible mold. During the construction process, it should be ensured that the layers are well connected, the compactness of the furnace body is uniform, and the deflection of the crucible mold should be strictly prevented.
Build the furnace collar, apply a layer of water glass on the furnace collar, mix the charge with water glass, attach it to the furnace according to a certain slope and decorate it smoothly. After tightening and solidifying, brush a layer of water glass, take out the crucible mold, dry it naturally, and enter the oven.
When knotting the material, pay attention to it. It is strictly forbidden to contain conductive substances when mixing the charge. It must be strictly inspected when mixing. It is necessary to ensure that the mixing machine and the site are clean and tidy, and prevent debris from entering the charge. The furnace lining at the corners of the furnace bottom and furnace wall must be compacted and compacted.
This is the relevant knowledge we shared about the intermediate frequency furnace knotting material, welcome to pay attention to Luoyang Hongteng, to solve more problems about furnace repair for you.
Video of the use process of the electric furnace