Casting method of pump body

Abstract

The invention discloses a casting method of a pump body. The casting method of the pump body comprises the steps that resin-bonded sand is taken as a raw material; the resin-bonded sand is adopted formanufacturing a sand mould, and a resin-bonded sand mould is manufactured after mould matching and mould assembling; then pouring liquid is prepared, wherein the pouring liquid comprises the following chemical components of 3.0-3.2% of C, 1.8-2.0% of Si, 0.4-0.5% of Mn, 0.08% of P, 0.01% of S, 0.03-0.04% of Mg, 0.01-0.02% of Re, 0.6-0.8% of Cu or 0.04-0.05% of Sn, and the balance Fe; the raw materials in the previous step are heated to a smelting temperature in an electric furnace, an alloy is fully molten into molten iron, and thus the pouring liquid is formed; the pouring liquid is poured into the resin-bonded sand mould, and a casting is formed after the pouring liquid is solidified; and after the casting is cooled wholly, the casting is subjected to sand removal and then heat treatment. With the adoption of the technical scheme, the production efficiency is improved, the production cost is lowered, and the casting quality is effectively ensured.

Description

technical field [0001] The invention relates to the field of casting, in particular to a casting method of a pump body. Background technique [0002] The manufacture of pump body castings requires high dimensional accuracy of the castings. In the current pouring method of the pump body, the hardness of the finished castings is not enough. Not only are there many casting processes, which affects the production capacity, but the accuracy of the castings cannot be effectively guaranteed, and the scrap rate is high. . Contents of the invention [0003] In order to overcome the above-mentioned technical problems in the prior art, the object of the present invention is to provide a pump body casting method, which can directly cast the pump body castings, the castings have high precision, and the processing method is simple. [0004] The pump body casting method provided by the invention comprises the following steps: [0005] (1) Resin sand is used as raw material, and the per...

AI Technical Summary

Problems solved by technology

[0002] The manufacture of pump body castings requires high dimensional accuracy of the castings. In the current pouring method of the pump body, the hardness of the finished castings is not enough. Not only are there many casting processes, which affects the production capacity, but the accuracy of the castings cannot be effectively guaranteed, and the scrap rate is high.