Method for casting bearing seat

Abstract

The invention discloses a method for casting a bearing seat. The method comprises the following steps of: (1) manufacturing a mold for the bearing seat, and forming a sprue, a riser and an exhaust port in the mold; (2) manufacturing a sand mold by adopting resin sand, and coating a zircon sand fast-dry coating on the surface of the sand mold; (3) closing a box, drying the sand mold, putting a sprue cup on the sprue of the mold, and putting a riser cup on the riser; (4) putting raw materials into an electric furnace and performing smelting to obtain a casting melt, wherein the raw materials comprise 60 percent of waste steel, 30 percent of sprue and riser returns and 10 percent of new iron, and the smelting temperature is 1,600 DEG C; (5) forming a casting, wherein the casting temperature is 1,550 DEG C, and the casting time is 4 minutes; and (6) performing heat preservation and cooling on the casting, cleaning after cooling, and thus obtaining a bearing seat casting, wherein the temperature of cooling water is less than or equal to 80 DEG C. By adopting the method for casting the bearing seat, the productivity for manufacturing the bearing seat casting is high, the running cost is low, and the produced casting is good in structure property and excellent in overall performance.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a casting process of a bearing seat. [0003] Background technique [0004] At present, when manufacturing bearing housings, the melting process of bearing housings is complex, requiring repeated vacuuming, repeated turning and smelting, long melting time, difficult quality control, low alloy composition and structure uniformity; for cast steel bearing housings with higher requirements Castings, because the riser is easy to stick to sand and the insulation effect is poor, the castings have cracks, pores, cold shuts, shrinkage porosity, sand holes and other casting defects that affect the compactness of the casting material, which seriously affects the quality of the casting. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the existing bearing housing casting technology, the object of the ...

AI Technical Summary

Problems solved by technology

[0004] At present, when manufacturing bearing housings, the melting process of bearing housings is complex, requiring repeated vacuuming, repeated turning and smelting, long melting time, difficult quality control, low alloy composition and structure uniformity; for cast steel bearing housings with higher requirements Castings, because the riser is easy to stick to sand and the insulation effect is poor, the castings have cracks, pores, cold shuts, shrinkage porosity, sand holes and other casting defects that affect the compactness of the casting material, which seriously affects the quality of the casting