Casting method of 12-cubic-meter slag ladle

Abstract

The invention provides a casting method of a 12-cubic-meter slag ladle. The method comprises the following steps that (1) process design is performed, specifically, a casting scheme that a slag ladle opening faces downwards is adopted, a pouring system is a three-layer ceramic tube pouring gate, a main riser is arranged at the right bottom of the slag ladle, a branch riser is arranged on each of six ground feet, and pouring is simulated to determine each process parameter; (2) alkali phenolic resin sand is adopted for molding, a sand mold adopts split molding, and a sand box is a random tower type box; (3) an imbedding technology is adopted, and anti-falling and anti-rotating wrapping lugs are designed; (4) a bottom box is emptied, and an induced draft fan is adopted for exhausting during pouring; (5) molten steel is smelted in two furnaces, and ladles are closed for pouring; and (6) cooling and post-processing are performed. According to the 12-cubic-meter slag ladle cast through the method, the hardness requirement of equipment tools is lowered, meanwhile, internal defects of products can be reduced, the product quality can be improved, the use requirement can be met, the rate of finished products is up to 99%, the use amount of resin sand is greatly reduced, the production cost is saved, and economic benefits are remarkable.

Description

technical field [0001] The invention belongs to casting technology, in particular to a casting method of 12 cubic meters of slag ladle. Background technique [0002] The slag bag is a necessary container for non-ferrous smelting enterprises to hold and transfer smelting slag, copper glaze, and slow cooling crystallization. The maximum temperature of the contents is 1300°C. The slag bag must be filled with slag and then transported to the slow cooling field for slow cooling at about 900°C. technical conditions, that is, the slag ladle must have high thermal fatigue resistance and meet the hot and cold working conditions, and the inner surface of the slag ladle should be flat and smooth, and the outer wall should be free from shrinkage, slag inclusions, sand inclusions, cracks, cold Casting defects such as partitions and pores, slag bag pressure test, no leakage, sweating, and a service life of ≥6 years. The current production status is that the single weight of 12 cubic mete...

AI Technical Summary

Problems solved by technology

The current production status is that the single weight of 12 cubic meters slag bag is about 27 tons, the size is large, and the compactness is difficult to guarantee; the melting capacity of the electric arc furnace is insufficient, the depth of the bottom pit is not enough, the sand box consumes a large amount of sand, serious waste, and blasting occurs during pouring Noise, molding sand is easy to vibrate and fall off, earrings are easy to fall off and rotate, and there are major safety hazards and other problems

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