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Lost foam paint and preparation method thereof

A lost foam and coating technology, applied in coatings, manufacturing tools, casting and molding equipment, etc., can solve the problems of poor coating adhesion and high manufacturing costs, and achieve strong adhesion, low cost of use, and good air permeability.

Inactive Publication Date: 2013-01-02
TAICANG KEBOER PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Alcohol-based coatings are usually used for existing large-scale castings, and methanol is used as a solvent. Although the quality of the castings is good, there are problems of high manufacturing costs due to poor coating adhesion.

Method used

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  • Lost foam paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The proportioning ratio of each component of the lost foam coating is: 45 parts by weight of 250 mesh high alumina clinker, 25 parts by weight of 280 mesh quartz powder, 3 parts by weight of sodium bentonite, 1.5 parts by weight of CMC, 2 parts by weight of polystyrene Vinyl alcohol, 1 part by weight of silica sol, 1.5 parts by weight of water glass, 4 parts by weight of BR resin, 0.2 parts by weight of T-80, and 2 parts by weight of iron oxide red powder.

[0020] Follow the steps below to prepare lost foam coatings:

[0021] First, 3 parts by weight of sodium bentonite is mixed with 8 parts by weight of water, and stirred at a high speed for 5 hours at a speed above 1000 rpm to form a bentonite slurry; meanwhile, 45 parts by weight of 250-mesh high-alumina bauxite clinker, 25 parts by weight of 280-mesh The quartz powder is stirred evenly in the grinding equipment, 60 parts by weight of water is added therein, and stirred to form an aggregate. Then get 1.5 parts by w...

Embodiment 2

[0025] The ratio of each component of the lost foam coating is: 50 parts by weight of 300 mesh high alumina clinker, 30 parts by weight of 300 mesh quartz powder, 2 parts by weight of sodium bentonite, 1 part by weight of CMC, 1 part by weight of polystyrene Vinyl alcohol, 2 parts by weight of silica sol, 1 part by weight of water glass, 5 parts by weight of BR resin, 0.1 part by weight of T-80, and 1 part by weight of iron oxide red powder.

[0026] Follow the steps below to prepare lost foam coatings:

[0027] First, 2 parts by weight of sodium bentonite is mixed with 10 parts by weight of water, and stirred at a high speed above 1000 rpm for 6 hours to form bentonite slurry; meanwhile, take 50 parts by weight of 300-mesh high-alumina bauxite clinker, 30 parts by weight of 300-mesh The quartz powder is stirred evenly in the grinding equipment, 60 parts by weight of water is added therein, and stirred to form an aggregate. Then get 1 weight part CMC, 1 weight part polyvinyl ...

Embodiment 3

[0031] The ratio of each component of the lost foam coating is: 55 parts by weight of 280-mesh high-alumina bauxite clinker, 35 parts by weight of 280-mesh quartz powder, 1 part by weight of sodium bentonite, 0.5 parts by weight of CMC, 2.5 parts by weight of polystyrene Vinyl alcohol, 3 parts by weight of silica sol, 0.5 parts by weight of water glass, 6 parts by weight of BR resin, 0.3 parts by weight of T-80, and 3 parts by weight of iron oxide red powder.

[0032] Follow the steps below to prepare lost foam coatings:

[0033] First, mix 1 part by weight of sodium bentonite with 10 parts by weight of water, and stir at a high speed of 1000 rpm or more for 7 hours to form bentonite slurry; meanwhile, take 55 parts by weight of 280-mesh high-alumina bauxite clinker, 35 parts by weight of 280-mesh The quartz powder is stirred evenly in the grinding equipment, 55 parts by weight of water is added therein, and stirred to form aggregate. Then get 0.5 parts by weight of CMC, 2.5 ...

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PUM

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Abstract

The invention relates to a lost foam paint and a preparation method thereof. The paint comprises, by weight, 45 to 55 parts of bauxite chamotte, 25 to 35 parts of quartz powder, 1 to 3 parts of sodium-based bentonite, 0.5 to 1.5 parts of CMC, 1 to 2.5 parts of polyvinyl alcohol, 1 to 3 parts of silica sol, 0.5 to 1.5 parts of soluble glass, 4 to 6 parts of BR resin, 0.1 to 0.3 part of T-80 and 1 to 3 parts of iron oxide red powder. The lost foam paint provided by the invention has good high temperature permeability, excellent brushability, good permeability, strong adhesion and no wrinkled skin on a casting surface; and after a template is dried, the template has high strength, can satisfy transport requirements for heavy castings and has strong capacity in resisting sticky sand.

Description

technical field [0001] The invention belongs to the field of casting, in particular to the technical field of production of lost foam cast steel. Background technique [0002] Lost foam casting (also known as solid casting) is to bond and combine foam models similar in size and shape to castings to form a model cluster. After brushing refractory paint and drying, it is buried in dry quartz sand for vibration molding, and poured under negative pressure. , the model is vaporized, the liquid metal occupies the position of the model, solidified and cooled to form a new casting method of castings. [0003] Compared with traditional casting technology, lost foam casting has the following characteristics: 1. Good casting quality and low cost; 2. Unlimited material and suitable size; 3. High dimensional accuracy and smooth surface, reducing cleaning workload; 4. Internal Defects are greatly reduced and the organization is compact; 5. Large-scale and mass production can be realized,...

Claims

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Application Information

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IPC IPC(8): B22C3/00B22C9/04
Inventor 陈立国
Owner TAICANG KEBOER PRECISION CASTING
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