Sand mould casting process

Abstract

The invention relates to the field of casting, in particular to a sand mould casting process. The sand mould casting process comprises the following steps of 1, preparing a tidal sand mold, wherein prepared model sand is screened, and the screened model sand is put into a tidal mold sand box molding machine; 2, putting prepared raw materials into a furnace, wherein the melt liquid temperature is 1400-1600 DEG C, the melt time is 4-5 hours, and the stirring is carried out every 30 minutes; 3, preheating the tidal sand mold prepared in the step 1, wherein the preheating temperature is 400-600 DEG C, the preheating time is 5-10 minutes, after preheating is finished, the molten liquid of the raw materials is injected into the tidal sand mold, then the tidal sand mold is placed in a constant temperature furnace, the tidal sand mold is slightly vibrated, the constant temperature time is 30-60 minutes, and the raw materials are kept in a molten state during constant temperature; and 4, takingout the tidal sand mould subjected to constant temperature treatment in the step 3, and cooling the tidal sand mould by using water cooling and air cooling. The tidal mold sand box molding machine can rapidly finish multiple collision molding, so that rapid compaction molding is achieved, and molding efficiency is guaranteed.

Description

technical field [0001] The invention relates to the field of casting, in particular to a sand casting process. Background technique [0002] Molding machine is a casting equipment used to make sand molds. Its main functions are: filling sand, filling loose molding sand into the sand box; compacting sand, compacting the loose molding sand in the sand box through different methods such as vibration compaction, compaction, shock pressure, and injection pressure, so as to make the sand mold It has the necessary strength in the process of handling and pouring; the mold is lifted, and the pattern is taken out of the compacted sand mold by using different mechanisms. [0003] When the loose molding sand is put into the sand box for molding, in order to facilitate the demoulding, the surface of the molding sand is covered with demoulding ash. The traditional molding machine relies on the hydraulic cylinder to complete the compaction and extrusion. The hydraulic cylinder drives the ...

AI Technical Summary

Problems solved by technology

[0003] When the loose molding sand is put into the sand box for molding, in order to facilitate the demoulding, the surface of the molding sand is covered with demoulding ash. The traditional molding machine relies on the hydraulic cylinder to complete the compaction and extrusion. The hydraulic cylinder drives the vibration-pressed molding plate to move back and forth faster. Slow, affecting the molding efficiency, the cost of the hydraulic cylinder is high, at the same time, the hydraulic method will make the molding effect poor, resulting in low yield of the workpiece in the later stage

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