Casting method of pump body

A pump body and resin sand technology, which is applied to casting molding equipment, casting molds, and casting mold components. It can solve the problems that the precision of castings cannot be effectively guaranteed, the hardness of finished castings is not enough, and there are many casting processes, so as to avoid quality defects. Guaranteeing the quality of castings and reducing production costs

Inactive Publication Date: 2018-02-27
TAIHU AIJIE MACHINE CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Effect test

specific Embodiment approach

[0013] The pump body casting method provided by the present invention will be described in detail below in conjunction with an embodiment.

Embodiment

[0015] The pump body casting method of the present embodiment comprises the following steps:

[0016] (1) Resin sand is used as raw material, and the percentage content of its components is as follows: resin 0.9-1.1%; curing agent 0.3-0.4%; the rest is molding sand;

[0017] (2) use described resin sand to make sand mold, form resin sand mold after matching mold closing box;

[0018] (3) For the production of pouring liquid, the raw material components and the prepared mixed sand are copied to the base plate sand core and sand core, and the sand core is pre-assigned into the upper and lower molds, and the cavity formed by the sand core is used for bottom pouring; the chemical composition of the raw materials The percentage content is as follows: C: 3.0-3.2%; Si: 1.8-2.0%; Mn: 0.4-0.5%; P: 0.08%; S: 0.01%; Mg: 0.03-0.04%; Re: 0.01-0.02%; : 0.6-0.8% or Sn: 0.04-0.05%; the rest is Fe;

[0019] (4) Heat the above raw materials to the smelting temperature in an electric furnace t...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C9/22C22C38/02C22C38/16
CPCB22C9/02B22C9/22C22C38/002C22C38/008C22C38/02C22C38/16
Inventor 陈结
Owner TAIHU AIJIE MACHINE CASTING
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