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Microwave coagulation forming system of water-soluble salt core

A microwave curing, water-soluble salt technology, applied in cores, casting components, casting and molding equipment, etc., can solve the problems of low salt core strength, easy corrosion of nozzles, short service life, etc., to achieve fast curing speed and avoid scratches , to ensure the effect of strength

Active Publication Date: 2018-07-20
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the traditional forming method of the existing water-soluble salt core has a long preparation cycle, the production cost of individualized products is relatively high, and the existing micro-droplet spray forming water-soluble salt core uses inorganic salt solution as the spray liquid, and the nozzle is easy to corrode. Problems with short service life and low salt core strength

Method used

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  • Microwave coagulation forming system of water-soluble salt core
  • Microwave coagulation forming system of water-soluble salt core

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A microwave solidification and forming system for water-soluble salt cores according to an embodiment includes a salt core spraying unit 100, a salt core curing unit 200, a salt core soaking unit 300, and a salt core sintering unit 400, and the salt core spraying unit 100 includes a liquid preparation chamber 120. Liquid spraying device 122, material spreading device 142 and infrared heating plate 180. The liquid distribution chamber 120 is used to store the configured spray liquid, the material spreading device 142 is used to lay inorganic salt powder, and the liquid spraying device 122 is 0.01 to Spray the spray liquid on the laid inorganic salt powder layer by layer with 1mm, the spray liquid makes the inorganic salt powder gather and condense into the salt core 230 to be solidified, while the liquid spray device 122 is working, the infrared heating plate 180 is used to pre-cure the salt core 230 to be solidified. Heating and shaping; the salt core curing unit 200 is ...

Embodiment 2

[0058] A microwave curing forming system for a water-soluble salt core according to the embodiment, the operation method is as follows:

[0059] S100, pretreatment of inorganic salts, drying potassium chloride and potassium carbonate at 100-105°C and 160-180°C respectively, grinding (or grinding after mixing), and sieving to obtain 140-200 mesh salt powder, and According to potassium chloride 35-45wt%, the ratio of potassium carbonate 55-65% is mixed evenly for subsequent use;

[0060] S200, configure the spray liquid, dissolve polyacrylamide, polyethylene glycol, fatty acid sorbitan and polysorbate into water, configure an aqueous solution with a viscosity of 3 cps, put the spray liquid into the liquid preparation chamber 120 of the salt core spraying unit 100 ;

[0061]S300, micro-droplet injection molding and infrared heating pre-curing, the spreading device 142 flatly spreads the inorganic salt powder obtained in step S100 on the lifting workbench 163, and the liquid spra...

Embodiment 3

[0065] A microwave solidification forming system of a water-soluble salt core according to the embodiment, the operation method is as follows

[0066] S100, pretreatment of inorganic salts, drying sodium chloride and sodium carbonate at 100-105°C and 200-205°C respectively, grinding (or grinding after mixing), and sieving to obtain 140-200 mesh salt powder, and According to sodium chloride 55-60wt%, the ratio of sodium carbonate 45-55% is mixed evenly for subsequent use;

[0067] S200, configure the spray liquid, mix water, polyethylene glycol, and polyacrylamide evenly, configure an aqueous solution with a viscosity of 2 cps, and put the spray liquid into the liquid preparation chamber 120 of the salt core spraying unit 100;

[0068] S300, micro-droplet injection molding and infrared heating pre-curing, the spreading device 142 flatly spreads the inorganic salt powder obtained in step S100 on the lifting workbench 163, and the liquid spraying device 122 sprays the powder obta...

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Abstract

The invention discloses a microwave coagulation forming system of a water-soluble salt core, and belongs to the technical field of casting. The microwave coagulation forming system comprises a salt core jetting unit, a salt core coagulation unit, a salt core soaking unit and a salt core sintering unit, wherein the salt core jetting unit comprises a liquid distribution bin, a liquid jetting device,a material spreading device and an infrared heating plate, wherein the liquid distribution bin is used for storing already-prepared jetting liquid, the material spreading device is used for laying inorganic salt powder, the liquid jetting device is used for jetting the jetting liquid to the laid inorganic salt powder to make the inorganic salt powder aggregated and coagulated into a to-be-coagulated salt core, and the infrared heating plate is used for preheating and sizing the to-be-coagulated salt core. By means of the microwave coagulation forming system of the water-soluble salt core, thesalt core is subjected to infrared heating and pre-forming, and is then subjected to inorganic salt solution wetting, microwave coagulation and sintering, since the wettability of an inorganic salt solution is very high, pores filled with the pre-formed salt core can be fully wetted, crystallization is conducted in the secondary microwave coagulation process, and the strength of the salt core isobviously improved.

Description

technical field [0001] The invention belongs to the technical field of casting, and specifically relates to a microwave solidification forming system for a water-soluble salt core. Background technique [0002] Water-soluble cores are widely used in the production of castings with complex inner cavities and curved channels because of their excellent water-soluble collapsibility and environmental friendliness. In the field of foundry industry, the water-soluble core made of soluble salt as the main material is called water-soluble salt core. [0003] At present, the production of water-soluble salt core mainly includes forming methods such as pressing and sintering method and melting casting method. The pressing and sintering method is mainly to mix the raw materials for preparing the salt core, press and form them in the salt core mold, and then bake and sinter at a certain temperature. For example: Chinese patent CN200810018179.8 mixes metal salt, binder, fiber and whiske...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/12B22C9/10
CPCB22C9/105B22C9/12
Inventor 张龙李景辉张明亚彭磊
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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