Method for casting manganese steel broken wall or mortar-rolling wall of cone crusher by internal and external metal molds sand-lining

Abstract

The invention discloses a method for casting a manganese steel broken wall or a mortar-rolling wall of a cone crusher by internal and external metal molds sand-lining, comprising the following steps: (1) manufacturing the metal sample mold of the crush wall or the mortar wall of a crusher; (2) manufacturing a near net internal metal mold and a near net external metal mold which have corresponding wall thicknesses according to the shape of the sample; (3) assembling the external metal mold, the sample mold, and the internal metal mold on a molding baseboard, and reserving a cavity; (4) putting sand into the cavity, ramming and hardening; (5) drawing to obtain an external metal mold sand-lined layer and an internal metal mold sand-lined layer, coating an alcohol-based paint on the surface, and burning to dry the surface; (6) pouring the external metal mold and the internal metal mold on a casting baseboard, covering a cover box, and fastening to form an integrated internal and external metal molds sand-lined cavity; and (7) pouring by the molten manganese steel, keeping the temperature and cooling. The casting prepared by the invention is not smashed, and the crystal particles of the surface texture are fine and clean and dimensional accuracy is high. By using the method in the invention, the resin film on the surface of the former sand can be effectively removed, and the former sand is high in reuse rate.

Description

technical field [0001] The invention relates to a casting method for a manganese steel crushing wall or a rolling mortar wall of a cone crusher, in particular to a method for casting the manganese steel crushing wall or rolling socket wall of a cone crusher by using inner and outer metal molds covered with sand. Background technique [0002] Cone crusher is a crushing equipment widely used in metallurgy, mining, building materials, refractory materials, energy and other industrial industries. The crushing wall and the rolling wall are the main wear parts of the cone crusher. Their quality directly affects the crushing efficiency and quality of raw materials, and also directly affects the output and technical and economic indicators of the product. [0003] At present, the wear-resistant parts of the crushing wall and rolling mortar wall used in the cone crusher are still mainly made of high-manganese steel ZGMn13, or trace alloy elements are added to the matrix of high-manga...

AI Technical Summary

Problems solved by technology

The disadvantages are: the molding method is extensive, the efficiency is low, the dimensional accuracy of the casting is low, the surface roughness is poor, especially the thickness of the sand barrier layer of the sand barrier outer chiller is difficult to control, and the quality of the casting is unstable; sticky sand, sand holes, and burrs fly Casting defects such as edges are unavoidable; moreover, it is difficult to clean the water glass sand castings, and the follow-up process is labor-intensive and costly

At the same time, it is also difficult to reuse the old sand of sodium silicate sand. The ratio of iron to sand is generally 1:3~5, the load of old sand regeneration is heavy, and the investment of old sand recycling equipment is large.

Therefore, most enterprises have no choice but to discard the old sand, which will inevitably cause pollution to the surrounding environment.

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