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Casting sand recycling technology of clay green sand mould

A casting sand and green sand technology, which is applied in the direction of manufacturing tools, casting molding equipment, cleaning/processing machinery of casting mold materials, etc., can solve the problems of low mud content, unfavorable energy saving and emission reduction development of enterprises, waste, etc., and achieve Effects of avoiding waste, high reusability, and protecting the natural environment

Inactive Publication Date: 2016-09-28
安徽省含山县林头振皖铸造厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The outer sand molds used in sand casting are divided into three types: clay wet sand molds, clay dry sand molds, and chemically hardened sand molds according to the binder used in the sand and the way it builds strength. After proper sand treatment, most of the foundry sand of clay green sand mold can be recycled and reused. Foundry sand requires less mud content, uniform particles, round and polygonal sea sand, river sand or mountain sand, etc. , but a small amount of foundry sand forms clusters or coarse particles under the action of clay. Due to the requirements of the surface finish of castings, the particle gradation of the original sand should also be suitable. Therefore, this part of foundry sand cannot be used and is directly discarded as waste. , resulting in great waste, and at the same time waste occupies a large space, which is not conducive to the development of energy conservation and emission reduction of enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A casting sand recovery and reuse process for a clay green sand mold, which is specifically carried out according to the following steps:

[0024] Step S101, crushing

[0025] Collect the used clay wet sand molds and crush them mechanically. When crushed, the particle size distribution is between 8 mesh and 50 mesh;

[0026] Step S102, rolling and mixing

[0027] 1) The crushed clay wet sand mold is transported to the double-wheel roller compactor mixer by the conveyor belt conveyor;

[0028] 2) Add red sand, red coal powder and pottery clay to the double-wheel roller compactor, wherein the mass ratio of the total mass of the three to the clay wet sand mold is 1; 8, and add red sand, red coal powder and pottery clay in turn In the double-wheel rolling mixer, the particle size of the pottery clay is controlled between 8 mesh and 15 mesh, and the rolling is mixed for 15 minutes; the water content of the red sand, red coal powder and pottery clay is controlled at 5%. On ...

Embodiment 2

[0035] A casting sand recovery and reuse process for a clay green sand mold, which is specifically carried out according to the following steps:

[0036] Step S101, crushing

[0037] Collect the used clay wet sand molds and crush them mechanically. When crushed, the particle size distribution is between 8 mesh and 50 mesh;

[0038] Step S102, rolling and mixing

[0039] 1) The crushed clay wet sand mold is transported to the double-wheel roller compactor mixer by the conveyor belt conveyor;

[0040] 2), add red sand, red coal powder and pottery clay to the two-wheel rolling mixer, wherein the mass ratio of the total mass of the three to the clay wet sand mold is 1; 9, red sand, red coal powder and pottery clay are added in turn In the double-wheel rolling mixer, the particle size of the pottery clay is controlled at 10 mesh, and the rolling and mixing is carried out for 30 minutes; the water content of the red sand, red coal powder and pottery clay is controlled at 3%, on th...

Embodiment 3

[0047] A casting sand recovery and reuse process for a clay green sand mold, which is specifically carried out according to the following steps:

[0048] Step S101, crushing

[0049] Collect the used clay wet sand molds and crush them mechanically. When crushed, the particle size distribution is between 8 mesh and 50 mesh;

[0050] Step S102, rolling and mixing

[0051] 1) The crushed clay wet sand mold is transported to the double-wheel roller compactor mixer by the conveyor belt conveyor;

[0052] 2), add red sand, red coal powder and pottery clay to the two-wheel roller compactor, wherein the mass ratio of the total mass of the three to the clay wet sand mold is 1; 8.5, add red sand, red coal powder and pottery clay in turn In the two-wheel rolling mixer, the particle size of the pottery clay is controlled at 10 mesh, and the rolling and mixing is carried out for 20 minutes; the water content of the red sand, red coal powder and pottery clay is controlled at 4%, on the on...

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PUM

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Abstract

The invention discloses a casting sand recycling technology of a clay green sand mould. The casting sand recycling technology comprises the following specific steps of S101, breaking, S102, milling and mixing, S103, screening, and S104, collecting. The casting sand recycling technology links orderly; by breaking, milling, mixing and screening the used clay green sand mould, the recycling of the clay green sand mould is realized; the grain gradation of raw sand after the screening is appropriate, and the raw sand can fully meet the use requirements of the conventional technology; the quality of manufactured casting pieces meets the requirements; a repeated utilization factor of the clay green sand mould is high; the purposes of energy conservation and emission reduction are reached; the wasting of raw sand resources is avoided; and the protection of the natural environment is facilitated.

Description

technical field [0001] The invention belongs to the field of traditional casting technology, and in particular relates to a casting sand recovery and reuse process for a clay green sand mold. Background technique [0002] With the rapid development of the economy, the traditional casting process has changed from manual to mechanized, but there are still many advantages in manual casting, such as: 1) castings can not be limited by metal materials, size and weight; 2) casting can produce various A blank with a complex shape, especially suitable for the production of blanks with complex inner cavities, such as various boxes, cylinders, blades, impellers, etc.; 3) The shape and size of the casting can be very close to the parts, which saves metal materials, It also saves cutting and processing hours; 4) The raw materials generally used in castings have a wide range of sources and the cost of castings is low; 5) The casting process is flexible and the productivity is high. It can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C5/04B22C5/06
CPCB22C5/04B22C5/0409B22C5/06
Inventor 宫尚虎宫尚兵宫东东黄庆春
Owner 安徽省含山县林头振皖铸造厂