The surfacing welding technology of high manganese steel breakers is a science. Hunan WISE teaches you how to use this technology. The specific welding process is as follows:
1) Wipe off the pulverized coal in the worn parts with a rag, and then clean the rust with a wire brush, or brush with water, but the hammerhead must be baked or dried. Make a special water tank bracket. The bracket can symmetrically place 4-6 hammer heads at a time for use in surfacing welding.
2) For surfacing welding, use the iron-based primer powder foundation welding and special spray welding transition layer alloy powder cover (intermediate transition layer) of Hunan WISE New Material Technology Co., Ltd. The electrode should be carefully dried before welding. Then use special wear-resistant alloy powder to weld the wear-resistant layer.
3) Put the hammer head in the flat welding position during the base welding, and use the iron-based base alloy powder of Hunan WISE New Material Technology Co., Ltd. to weld along the periphery of the wear surface for a week to prevent the edge from lifting during the welding. During the welding process, if there are holes, they must be welded flat before proceeding to the next process. Put the four hammer heads after welding around the circle on the water tank bracket at the same time, and carry out narrow welding bead and quick bottom welding. When the strike is too high, turn the bracket to build up the next hammer head, which can avoid the cracks caused by the rapid temperature rise. After the bottom welding, a 3-5mm thick margin should be left for the cover welding.
4) When surfacing the surface layer (intermediate transition layer or wear-resistant layer) of special alloy powder of Hunan WISE New Material Technology Co., Ltd., use small current, narrow bead surfacing. It is necessary to hammer the weld bead in time and perform water toughening treatment (watering the weld bead). Must pay attention to avoid the workpiece temperature is too high. It should be welded on the bottom layer without slag and rust. It cannot be welded directly on the workpiece or the rusted bottom layer. It is best to overlay the cover surface immediately after the bottom welding to prevent the bottom layer from rusting.
Practice has proved that the original hammer head can only be used for 20 days, and the hammer head repaired by welding can be used continuously for 60-100 days, and the repair cost is only 1/4 of the cost of the new hammer head, thereby saving production costs.
After the cast high-manganese steel hammer head is worn, in addition to the above-mentioned method of surfacing welding or repair, other surfacing materials and repair methods can also be selected according to the usage conditions of the hammer head.