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Preparation method of integral resin bonded sand mould

A resin sand and integral technology, applied in the field of casting, can solve the problems of increased grinding processing costs, low internal density, large external dimension deformation, etc., and achieve the effect of reducing grinding processing costs, small external dimension deformation, and small dimensional deformation

Inactive Publication Date: 2018-03-09
QINGDAO TIANDI CASTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the sand molds used by domestic manufacturers of fused zirconia corundum bricks are mostly combined water glass sand molds. When casting with this kind of sand mold, it is easy to cause defects such as large deformation of the brick body and low internal density, and the product qualification rate is low.
In addition, the fused zirconia corundum bricks that have been cast and formed are rough bricks, which need to be ground and processed, and can only be delivered to customers after the surface reaches a certain level of smoothness. The parts that need to be processed have a large amount of grinding, which increases the cost of grinding and processing, and the manufacturing cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0011] (1) Material selection: 96 parts of quartz sand, 3.3 parts of furan resin, 0.7 parts of hardener, the quartz sand is made of quartz sand with a silica content greater than 95.5% and a particle size of 50-80 mesh;

[0012] (2) Mixing Add quartz sand, furan resin and hardener into the mixer in proportion, stir, grind evenly, and set aside;

[0013] (3) Molding: Pour the spare mixture into the mold, let it stand for molding at room temperature, and dry it naturally. If it is urgent for production, the sand mold can also be dried with the help of a microwave dryer.

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PUM

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Abstract

The invention discloses a method for preparing an integral resin sand mold, which is obtained by mixing prepared quartz sand, furan resin and hardener in corresponding proportions, pouring them into a mold and standing for molding, and is used for casting to produce fused zirconium corundum bricks. The beneficial effect is that this kind of sand mold has strong integrity, so the dimensional deformation is small, the manufacturing cost is low, the air permeability is good, and the gas in the sand mold is convenient to discharge during casting, so the shape and dimension deformation of the fused zirconia corundum brick body after casting is small, and the inside of the brick body High density, low porosity, high qualified rate of products, brick size and internal quality are better than sodium silicate sand mold; the production of rough bricks requires less grinding parts, which reduces processing costs, reduces product costs, and improves production efficiency. The method has economic benefits, the preparation method is simple to operate, and can be produced in large quantities.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a method for preparing an integral resin sand mold. Background technique [0002] At present, the sand molds used by domestic manufacturers of fused zirconia corundum bricks are mostly combined water glass sand molds. When casting with such sand molds, it is easy to cause defects such as large deformation of the brick body and low internal density, and the product qualification rate is low. In addition, the fused zirconia corundum bricks qualified by casting are rough bricks, which need to be ground and processed, and can only be delivered to customers after the surface reaches a certain level of smoothness. The parts that need to be processed have a large amount of grinding, which increases the cost of grinding and processing, and the manufacturing cost is high. Contents of the invention [0003] In order to overcome the above-mentioned technical problems exis...

Claims

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Application Information

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IPC IPC(8): C04B26/10
CPCC04B26/105C04B2111/00939C04B14/06C04B2103/0068
Inventor 李玉敏
Owner QINGDAO TIANDI CASTING CO LTD
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