Casting steps of Ingenuity casting large slag tank

One of the important metallurgical containers of slag tank, which is mainly used to carry converter steel slag, desulphurization slag and ladle casting surplus of continuous casting, plays an important role in steelmaking production. The stress accumulated in the casting process of the cast steel slag tank, as well as the harsh working environment such as carrying the abnormal slag of the converter, the molten steel left in the continuous casting ladle, and suffering from external blows, are easy to cause damage to the slag tank and affect the life of the slag tank.

According to the use environment of the slag tank and the production experience of more than ten years, the production technology of the slag tank has been continuously improved.

Step 1: simulation, modeling.

Before pouring, the casting process is digitally simulated by CAE software, the forming process is analyzed and the quality is predicted, and the process of slag tank casting is continuously optimized. Complete sets of metallurgical accessories, good overall size control, the use of sodium silicate sand molding process, can prevent the occurrence of hot cracks in castings, while the use of pit modeling, not affected by the season, high production efficiency.

Step 2: pouring and heat treatment.

The qualified raw and auxiliary materials are proportionally put into the electric arc furnace for smelting, and the hot metal is sampled for spectral analysis. After passing the inspection, the raw and auxiliary materials are poured according to the principle of "low temperature and quick pouring", and the pouring time and temperature are recorded. In order to solve the problem of large difference in carbon content between earshaft alloy steel and tank carbon steel, Kunfeng slag tank customized a set of complete process to strictly control the welding problems in the production process.

Step 3: polishing and shot blasting.

Finally, cut the riser, flying edge and so on. Kunfeng slag tank has a professional grinding and finishing team, large-scale shot peening equipment, which can effectively improve the appearance quality of slag tank, make its surface finish meet customer requirements, and use advanced flaw detection equipment to carry out non-destructive testing of each slag tank. to ensure the internal quality of slag tank and strictly prevent any defective products from leaving the factory.

According to the scientific and advanced production process, the average use times of the slag tank produced by Kunfeng slag tank is 6000 times, the service life is long, and the integrated casting has strong anti-deformation ability, and the first maintenance time is 2-3 months later than that of the same trade.