A sand casting process

Abstract

The invention relates to a sand mold casting process. The sand mold casting process comprises the following steps of s1, molding sand casting; s2, carrying out high-temperature-resistant dewatering treatment; and s3, pouring molten iron. A spraying device is included in the s2 above, and the spraying device comprises a liquid storage hopper with an opening at the upper end, a liquid spraying pipefor spraying liquid to the surface of a sand mold, a liquid discharging pipe connected with the lower portion of the liquid storage hopper and the liquid spraying pipe, and a driving pump arranged onthe liquid discharging pipe; and supporting rods are further arranged on the liquid storage hopper, a sliding groove is formed in each supporting rod in the length direction, a driving block with theupper end beyond the upper end of the supporting rod is slidably connected in the sliding groove, and a transmission part used for driving the driving block to move linearly is further arranged on each supporting rod. The sand mold casting process has the effects of bringing convenience for the working personnel to turn over the sand mold and improving the working efficiency.

Description

technical field [0001] The invention relates to the technical field of casting a traction machine base, in particular to a sand casting process. Background technique [0002] At present, sand casting refers to the casting method of producing castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, the casting mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings. It has been the basic process in casting production for a long time. [0003] Existing such as Figure 7 As shown, a mold for casting the base of a traction machine includes an outer frame 23 of an upper sand mold 1 and a lower sand mold 2, and a molding sand body embedded in the outer frame 23. The upper sand mold 1 and the lower sand mold 2 are inserted and matched to form a cavity for pouring molten iron to form ...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned existing technical solutions have the following defects: since the sand mold is in a suspended state and has no stress point when spraying diesel oil, it is difficult for the staff to drive it to turn over, so it is generally necessary to lower the sand mold to touch the ground. The sand mold is in a vertical state, so the sand mold needs to be turned over by the staff. In this process, because the sand mold is heavy, it is very laborious for the staff to drive it over, so it usually requires the cooperation of two staff, and because The chain is soft, and it is necessary to rely on experience to visually check that the chain is in the corresponding position of the lifting rod to maintain the relative horizontal state of the sand mold. There are many uncertain factors, which affect its working efficiency

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