A coating for lost foam casting cast iron and its manufacturing process

A technology of lost foam casting and coating, applied in the direction of manufacturing tools, casting molding equipment, coating, etc., to achieve the effect of convenient transportation, simple and convenient use, and excellent operability

Inactive Publication Date: 2011-12-14
SHANDONG XINGHUA MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commercial coatings currently available on the market are difficult to meet these requirements at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Get 43.8 kilograms of quartz powders, particle size is 43.8 kilograms of 180 mesh graphite powders, particle size is 4.4 kilograms of 120 mesh flake graphite powders, particle size is 2.63 kilograms of 320 mesh lithium bentonites, phenolic resin is 2.63 kilograms, carboxymethyl cellulose is 1.29 kilograms, Latex is 1.29 kg, n-octanol is 0.16 kg.

[0020] Its manufacturing process includes the following steps:

[0021] ① Stir the carboxymethyl cellulose into a paste with 15 kg of hot water for later use;

[0022] ②Put 65 kg of hot water, spare pasty cellulose, phenolic resin, and white latex into the mixer and stir for 11 minutes;

[0023] ③ Add methyl bentonite and stir for 10 minutes;

[0024] ④Add graphite powder and flake graphite powder and stir for 6 minutes;

[0025] ⑤ Add quartz powder and n-octanol and stir for 130 minutes to obtain a usable coating.

Embodiment 2

[0027] Get 45 kilograms of quartz powders, particle size is 42.6 kilograms of graphite powders of 180 orders, particle size is 4.5 kilograms of flake graphite powders of 120 orders, particle size is 2.53 kilograms of lithium-based bentonites of 320 orders, phenolic resin is 2.64 kilograms, carboxymethyl cellulose is 1.28 kilograms, Latex is 1.30 kg, and n-octanol is 0.15 kg.

[0028] Its manufacturing process includes the following steps:

[0029] ① Stir carboxymethyl cellulose into a paste with 14 kg of hot water for later use;

[0030] ②Put 66kg of hot water, spare pasty cellulose, phenolic resin, and white latex into the mixer and stir for 10 minutes;

[0031] ③ Add methyl bentonite and stir for 11 minutes;

[0032] ④ Add graphite powder and flake graphite powder and stir for 5 minutes;

[0033] ⑤ Add quartz powder and n-octanol and stir for 120 minutes to obtain a usable coating.

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PUM

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Abstract

The invention discloses a coating for lost foam casting cast iron and production process thereof, belonging to the technical field of the metal material processing and metallurgy. Quartz powder, graphite powder (lead powder), crystalline flake graphite powder, lithium base bentonite, phenolic resin, carboxymethylcellulose, milk-white glue and n-octyl alcohol are taken according to predetermined proportions; next, hot water in a predetermined proportion is taken and then all the materials are blanked and stirred thereto in a predetermined order, thereby obtaining the usable coating. The coating has excellent thixotropism; the coating has no foam or little foam which disappears quickly in the process of stirring and use; and the coating may not craze after being dried.

Description

[0001] technical field [0002] The invention belongs to the technical field of metal material processing and metallurgy, and relates to a coating for lost foam cast iron, which has the advantages of no pollution, simple and convenient packaging and transportation, no corruption and deterioration during long-term storage, and the like. Background technique [0003] Lost foam casting is currently the fastest growing new casting process, and coating technology is one of the keys to the success of this process. At present, most of the lost foam casting manufacturers in my country use self-made coatings to cope with production, and the obtained castings have rough surfaces and even casting defects. High-quality paint depends on imports, which are expensive. At present, some of the lost foam coatings available on the market are water-based colloidal coatings, and a small amount are foam coatings. Water-based colloidal paint is packaged in iron drums or plastic drums, which incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 薛永方吕春光
Owner SHANDONG XINGHUA MACHINERY
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