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Casting method of iron casting

A technology of iron castings and casting molds, which is applied in the field of casting iron castings. It can solve the problems of easy generation of trachoma and cross section, low dimensional accuracy of castings, and easy deformation, etc., and achieve smooth and flat surface, good alkali resistance and high temperature resistance. Effect

Inactive Publication Date: 2014-01-01
唐兴文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcomings of the above method: because the overall nature of the sand is soft and porous, the dimensional accuracy of the sand casting is low, the surface is rough and not smooth, and it is easy to produce sand holes and cross sections. When casting large-scale complex iron castings prone to deformation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for casting iron castings, characterized in that it comprises the following steps:

[0034] ① Make a wooden mold according to the size and shape of the iron casting, cut out the casting opening, riser and vent hole on the top of the wooden mold, insert a wooden stick with a height of 15cm in the casting mouth, riser and ventilation hole, and clean the wooden mold Make the surface of the wooden formwork smooth;

[0035] ②Make a wooden box that can accommodate the wooden mold, and cut out a drain at the bottom of the wooden box;

[0036] ③ Make refractory mud, which is made by mixing the following raw materials by weight percentage:

[0037] Al 2 o 3 25% high alumina bauxite with a content of 50-55% and a particle size of 0.15-0.3mm,

[0038] Al 2 o 3 50% high alumina bauxite with a content of 50-55% and a particle size of 0.3-1.5mm,

[0039] Mullite powder 5%,

[0040] Clay 15%,

[0041] Quartz sand 1%,

[0042] Metal silicon powder 1%,

[0043]White ...

Embodiment 2

[0051] A method for casting iron castings, characterized in that it comprises the following steps:

[0052] ① Make a wooden mold according to the size and shape of the iron casting, cut out the casting opening, riser and vent hole on the top of the wooden mold, insert a wooden stick with a height of 16cm in the casting mouth, riser and ventilation hole, and clean the wooden mold Make the surface of the wooden formwork smooth;

[0053] ②Make a wooden box that can accommodate the wooden mold, and cut out a drain at the bottom of the wooden box;

[0054] ③ Make refractory mud, which is made by mixing the following raw materials by weight percentage:

[0055] Al 2 o 3 35% high alumina bauxite with a content of 50-55% and a particle size of 0.15-0.3mm,

[0056] Al 2 o 3 30% high alumina bauxite with a content of 50-55% and a particle size of 0.3-1.5mm,

[0057] Mullite powder 15%,

[0058] Clay 18.7%,

[0059] Quartz sand 0.1%,

[0060] Metal silicon powder 0.1%,

[0061...

Embodiment 3

[0069] A method for casting iron castings, characterized in that it comprises the following steps:

[0070] ① Make a wooden mold according to the size and shape of the iron casting, cut out the casting opening, riser and vent hole on the top of the wooden mold, insert a wooden stick with a height of 18cm in the casting mouth, riser and ventilation hole, and clean the wooden mold Make the surface of the wooden formwork smooth;

[0071] ②Make a wooden box that can accommodate the wooden mold, and cut out a drain at the bottom of the wooden box;

[0072] ③ Make refractory mud, which is made by mixing the following raw materials by weight percentage:

[0073] Al 2 o 3 30% high alumina bauxite with a content of 50-55% and a particle size of 0.15-0.3mm,

[0074] Al 2 o 3 45% high alumina bauxite with a content of 50-55% and a particle size of 0.3-1.5mm,

[0075] Mullite powder 5%,

[0076] Clay 18%,

[0077] Quartz sand 0.2%,

[0078] Metal silicon powder 0.2%,

[0079] W...

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PUM

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Abstract

The invention provides a casting method of an iron casting. The method comprises the following steps of manufacturing a wood die according to the size and the shape of the iron casting; manufacturing a wood box capable of accommodating the wood die; manufacturing refractory mud; manufacturing a refractory brick shell casting die; adding an inoculant CBSALLOY into molten iron; casting molten iron; and after cooling, removing the refractory brick shell casting die to obtain the iron casting. The iron casting cast by the method is relatively high in size precision, and smooth and flat in surface, does not have sand holes or fracture surfaces, and is particularly suitable for casting large-size complex iron casting.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a casting method of iron castings. Background technique [0002] In the cast iron industry, the traditional casting method is sand casting. In this method, a wooden mold is usually made according to the shape of the casting, and then a sand mold is made around the wooden mold with sand as the main molding material. After the wooden mold is taken out, molten iron is poured into the cavity of the casting shape of the sand mold, and the casting is obtained after the molten iron solidifies. . The shortcomings of the above method: because the overall nature of the sand is soft and porous, the dimensional accuracy of the sand casting castings is low, the surface is rough and not smooth, and it is easy to produce sand holes and cross-sections. When casting large-scale complex iron castings Easily deformed. Contents of the invention [0003] The technical problem to be solved by th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D3/00B22D1/00B22C1/00
Inventor 唐兴文
Owner 唐兴文