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An inorganic binder for casting

A technology of inorganic binders and regulators, applied in casting molding equipment, casting molds, manufacturing tools, etc., can solve the problems of cost resin sand environmental pollution, restricting the development of organic resin binders, and the limitation of excessive gas generation. Achieve the effects of low cost, broad prospects for promotion and application, and obvious advantages

Active Publication Date: 2021-06-11
共享智能装备(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the organic resin binder has excellent performance, its high cost, the serious pollution of the environment during the use of the resin sand, and the limitations of the high gas generation in the quality control of castings are serious. Restricting the further development of organic resin binders in the field of foundry 3D inkjet printing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] ① Pump 40% of the alkali metal silicate and 36% of the solvent into the enamel reaction kettle with a vacuum pump, start stirring and start to heat up, the temperature rises to 95-105°C, and timed stirring for 45 ~60min.

[0030] ② Pump the modulus regulator with a mass fraction of 12% into the enamel reaction kettle with a vacuum pump, heat and stir at 95-105°C for 30-45 minutes.

[0031] ③ 10% mass fraction of the modifier is pumped into the enamel reaction kettle with a vacuum pump, the temperature is raised to 120-125° C., and the reaction is stirred for 60-90 minutes.

[0032] ④ Cool down to 35-40°C, add 1% mass fraction of the surfactant and 1% mass fraction of the preservative, and continue stirring for 30-40 minutes.

[0033] ⑤Reduce the temperature to 20-25°C, test and package, and then obtain the new inorganic binder product for casting 3D inkjet printing.

[0034] The viscosity of the inorganic binder for casting is 10.4mpa.s at 25°C, the gas output of the ...

Embodiment 2

[0036] ① Pump 38% mass fraction of the alkali metal silicate and 33% mass fraction of the solvent into the enamel reaction kettle with a vacuum pump, start stirring and start to heat up, the temperature rises to 95-105 °C, and timed stirring for 45-45 °C 60min.

[0037] ② Pump the modulus regulator with a mass fraction of 15% into the enamel reaction kettle with a vacuum pump, heat-preserve and stir at 95-105°C for 30-45 minutes.

[0038] ③ Pump 12% mass fraction of the modifier into the enamel reaction kettle with a vacuum pump, raise the temperature to 120-125° C., and stir for 60-90 minutes.

[0039] ④ Cool down to 35-40°C, add 0.8% by mass fraction of the surfactant and 1.2% by mass fraction of the preservative, and continue stirring for 30-40min.

[0040] ⑤Reduce the temperature to 20-25°C, test and package, and then obtain the new inorganic binder product for casting 3D inkjet printing.

[0041] The viscosity of the inorganic binder for casting is 9.7mpa.s at 25°C, the...

Embodiment 3

[0043] ①Put the alkali metal silicate with 42% mass fraction and the solvent with 39% mass fraction into the enamel reaction kettle with a vacuum pump, start stirring and start to heat up, the temperature rises to 95-105 °C, and timed stirring for 45-45 °C 60min.

[0044] ② Pump 10% mass fraction of the modulus regulator into the enamel reaction kettle with a vacuum pump, heat-preserve and stir at 95-105°C for 30-45 minutes.

[0045] ③ Pump 6.9% mass fraction of the modifier into the enamel reaction kettle with a vacuum pump, raise the temperature to 120-125° C., and stir for 60-90 minutes.

[0046] ④ Cool down to 35-40°C, add 1.4% mass fraction of the surfactant and 0.7% mass fraction of the preservative, and continue stirring for 30-40 minutes.

[0047] ⑤ Cool down to 20-25°C, test, pack, and obtain a new inorganic binder product for casting 3D inkjet printing.

[0048] The viscosity of the inorganic binder for casting is 11.3mpa.s at 25°C, the gas output of the sand mold ...

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PUM

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Abstract

The invention relates to an inorganic binder for casting, comprising alkali metal silicate, surfactant, modulus regulator, preservative, modifier and solvent; the alkali metal silicate is sodium silicate, silicon At least one of potassium phosphate and lithium silicate; the surfactant is an anionic surfactant; the modulus regulator is a strong base; the solvent is deionized water; the preservative is potassium sorbate, One or more combinations of ethyl p-hydroxybenzoate, propyl p-hydroxybenzoate, and sorbic acid; the modifying agent is sodium hexametaphosphate, sodium tripolyphosphate, dipotassium hydrogen phosphate, dextrin, One or more combinations of silicon dioxide; the inorganic binder for casting is an alkaline aqueous solution. In order to solve the deficiencies of the prior art, the invention provides an inorganic binder for casting. The inorganic binder for casting 3D inkjet printing of the present invention has the advantages of low viscosity, low gas generation, low cost, low VOC emission and wide application prospects.

Description

technical field [0001] The invention relates to the field of casting auxiliary materials, in particular to an inorganic binder for casting. Background technique [0002] Together with robots and the Internet, 3D printing technology is called the main symbol of the third industrial revolution. At present, some industrial-grade 3D inkjet printers have been used in foundry production services, mainly for rapid prototyping of castings, remaking molds, printing mold shells, sand cores, etc. [0003] At present, the binders commonly used in foundry 3D inkjet printing are organic resins, such as furan resin and phenolic resin. Although the organic resin binder has excellent performance, its high cost, the serious pollution of the environment during the use of the resin sand, and the limitations of the excessive gas generation in the quality control of castings are serious. This restricts the further development of organic resin binders in the field of casting 3D inkjet printing. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/18
CPCB22C1/188
Inventor 邢金龙陈伟张茜
Owner 共享智能装备(安徽)有限公司
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