Steel casting heating heat-preservation feeding head for casting

Abstract

The invention belongs to the technical field of metal casting, and particularly relates to a heating heat-preservation feeding head for steel casting. The heating heat-preservation feeding head for the steel casting is manufactured from the following raw materials by weight ratio: 59.5+ / -5 of aluminum, 26+ / -2 of floating beads, 5+ / -0.5 of phenolic resins, 4+ / -0.5 of iron scales and 1.5+ / -0.1 of phosphoric acids. According to the invention, because the material of a feeding head sleeve has heating and heat-preservation effects, the coagulation time of molten steel inside the feeding head is far longer than the supplemented time of casts, the proportion of effective molten steel is greatly enhanced to about 75%, in such a way, the volume and size of the feeding head can be reduced, and the molten steel is conserved; and in addition, a heat-preservation heating covering agent and an easily cut sheet are matched, and therefore the product yield of a casting process can be enhanced to more than 75%.

Description

technical field [0001] The invention belongs to the technical field of casting, in particular to a feeding technology in the production process of steel castings. Background technique [0002] In the production of steel castings, defects such as shrinkage porosity, shrinkage cavities, and slag inclusions of castings are a major problem restricting the production of steel castings. It directly affects the internal quality and process yield of steel castings, and the process yield rate It is an important technical index that affects the cost of castings. The feeding technology is an important factor that directly affects the yield of the casting process. [0003] Since the steel castings have liquid shrinkage and solid shrinkage during the solidification process, in order to ensure that the steel castings obtain a dense structure, in the production process of the steel castings, it is necessary to ensure that the feeding channel is unblocked and to ensure sufficient liquid st...

AI Technical Summary

Problems solved by technology

In order to obtain a dense casting structure, the traditional steel casting process must use a larger riser to meet the feeding of the casting. In some hot spots, sometimes the riser cannot be installed, and shrinkage cavities or shrinkage defects will exist, which will affect the intrinsic quality of the casting. quality

[0005] Using traditional risers, the process yield of steel castings is generally low