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Special-shaped box body casting method

A special-shaped box and casting technology, applied in the field of machinery, can solve problems such as poor product quality, low dimensional accuracy, and difficulty in adapting to requirements

Inactive Publication Date: 2015-07-08
宁海燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the general small and medium-sized enterprises adopt the sand casting method for parts with relatively complicated structural shapes. Although the sand casting method can adapt to various parts with complex shapes, the quality of the manufactured products is not good, and the dimensional accuracy is relatively low. Low, there is a parting surface on the product, it is difficult to adapt to the requirements of modern machine manufacturing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] A method for casting a special-shaped box. Firstly, a sand mold is made, then the sand mold is used for pouring molding, and finally the casting is heat-treated. The pouring molding adopts the following steps:

[0012] A. Put the raw materials into the smelting furnace for smelting;

[0013] B. After smelting, add Inoculin390 pretreatment agent to the molten iron for treatment;

[0014] C. Then add an inoculant to the molten iron before pouring, and fully stir;

[0015] D. Finally, pour the molten iron into the sand mold and solidify to form a casting.

[0016] In the C step of pouring molding, the inoculant adopts a composite inoculant, and the composite inoculant is a combination of lanthanum-containing inoculant and 75 ferrosilicon inoculant; in the C step of pouring molding, according to the weight ratio, the composite inoculant The total amount of inoculants added is 0.4±0.10%, of which the amount of lanthanum-containing inoculants is 0.25±0.06%, and the particle...

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PUM

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Abstract

The invention provides a special-shaped box body casting method comprising following steps: making a sand mould, performing casting moulding by the sand mould, and finally performing thermal treatment to a casting, wherein the casting moulding includes following steps: (A) performing smelting to raw materials in a smelting furnace; (B) adding an Inoculin 390 pretreatment agent to iron liquid after the smelting process to treat the iron liquid; (C) adding an inoculant to the iron liquid before pouring and fully stirring the iron liquid; and (D) finally pouring the iron liquid into the sand mould to solidify the iron liquid to form the casting. The special-shaped box body casting method is simple. Because the pouring liquid is good in flowability, a special-shaped box body structure being good in quality and complex in structure can be formed.

Description

technical field [0001] The invention relates to a method for casting a special-shaped box, which belongs to the technical field of machinery. Background technique [0002] In the prior art, the general small and medium-sized enterprises adopt the sand casting method for parts with relatively complicated structural shapes. Although the sand casting method can adapt to various parts with complex shapes, the quality of the manufactured products is not good, and the dimensional accuracy is relatively low. Low, there is a parting surface on the product, it is difficult to adapt to the requirements of modern machine manufacturing. Contents of the invention [0003] The invention provides a method for casting a special-shaped box, which can cast iron castings with complex shapes and has good casting quality. [0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for casting a special-shaped box, firstly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22C9/22B22D1/00
CPCB22C3/00B22C9/22B22D1/00
Inventor 宁海燕
Owner 宁海燕