Powder 3D printing method based on instant inorganic binder

An inorganic binder, 3D printing technology, applied in the field of powder 3D printing, can solve the problems of easy corrosion of conveying pipes and printing nozzles, difficult long-term storage, nozzle clogging, etc., to achieve suitable surface tension, reduce production costs, and improve product quality. Effect

Active Publication Date: 2014-11-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) The organic binder has poor stability, is easy to deteriorate, is difficult to store for a long time, and has more storage requirements. At the same time, this kind of binder is also easy to corrode the delivery pipeline and the printing nozzle, and its denaturation may cause the nozzle. Blockage, resulting in process instability and affecting the entire powder 3D printing process;
[0006] 2) The parts obtained by powder 3D printing usually need

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A powder 3D printing method based on an instant inorganic binder, comprising the following steps:

[0023] 1) In terms of parts by mass, 99 parts of deionized water are used as the 3D printer binder, and 1 part of alcohol is added as a volatilization aid to improve the drying speed of the binder. Add modifiers to modify the binder, and the above mixed solution is used as the binder for powder 3D printing;

[0024] 2) Use 5 parts of powdered sodium sodium papaya as a solid binder, mix with 95 parts of sand powder as a raw material powder for a 3D printer, and adjust the powder properties without adding a flux. The mixed powder formed above is used as a powder 3D printed materials;

[0025] 3) Use 40 parts of the binder prepared in step 1) and 60 parts of the mixed powder prepared in step 2) for powder 3D printing. After printing, save the printed parts in the powder 3D printer for natural drying, or send them to a heat drying box Or dry in a microwave drying oven; afte...

Embodiment 2

[0028] A powder 3D printing method based on an instant inorganic binder, comprising the following steps:

[0029] 1) In terms of parts by mass, 98 parts of deionized water are used as the 3D printer binder, 1 part of alcohol is added as a volatilization aid to improve the drying speed of the binder, and inorganic ink is added as a colorant to color the binder, Add 1 part of thickener as a modifier to modify the binder, and the above mixed solution is used as a binder for powder 3D printing;

[0030] 2) Use 10 parts of powdered potassium sodium silicate as a solid binder, mix with 90 parts of sand powder as a raw material powder for a 3D printer, and adjust the powder properties without adding a flux, and the mixed powder formed above is used as a powder 3D printed materials;

[0031] 3) Use 40 parts of the binder prepared in step 1) and 60 parts of the mixed powder prepared in step 2) for powder 3D printing. After printing, save the printed parts in the powder 3D printer for ...

Embodiment 3

[0034] A powder 3D printing method based on an instant inorganic binder, comprising the following steps:

[0035] 1) In terms of parts by mass, 79 parts of deionized water are used as the 3D printer binder, 20 parts of alcohol are added as a volatilization aid to improve the drying speed of the binder, and 5 parts of inorganic ink is added as a colorant for the binder. For coloring, add 1 part of thickener as a modifier to modify the binder, and the above mixed solution is used as the binder for powder 3D printing;

[0036] 2) Using 10 parts of powdered sodium sodium papaya as a solid binder, mixed with 85 parts of diatomite powder as a raw material powder for a 3D printer, and adding 5 parts of calcium oxide (CaO) as a flux to adjust the powder properties, The mixed powder formed above is used as the material for powder 3D printing;

[0037] 3) Use 40 parts of the binder prepared in step 1) and 60 parts of the mixed powder prepared in step 2) for powder 3D printing. After pr...

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Abstract

The invention discloses a powder 3D printing method based on instant inorganic binder. The powder 3D printing method comprises the following steps: firstly, using deionized water as a binder for a 3D printer, and adding a co-volatile agent, a coloring agent and a modifying agent to form a mixed solution as a binder for powder 3D printing; secondly, using instant sodium silicate as a solid binder, mixing the solid binder with 3D printer raw material powder, and then adding flux to form mixed powder as a material for the powder 3D printing; finally, performing the powder 3D printing by using the prepared binder and the mixed powder, wherein the binder prepared from water and the instant sodium silicate are used as the binder for a powder 3D printing process; as for a powder 3D printing nozzle, a solution with the viscosity close to water is only filled, and the solution is stable in performance, easier to store, unlikely to block the nozzle and free of corrosive effect on the nozzle. By the powder 3D printing method, rapid powder 3D printing of a product with complex structure is achieved, and the environment friendliness of the manufacturing process is ensured; by the powder 3D printing method, the production cost is reduced and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of powder 3D printing, in particular to a powder 3D printing method based on an instant inorganic binder. Background technique [0002] Instant sodium silicate is an inorganic high-temperature binder commonly used in industry. The commonly used one is instant sodium silicate. When the requirements are high, instant potassium silicate can be used. If water is used as the solution, instant sodium silicate can be quickly dissolved in In water, a binder with strong bonding ability is formed. It is widely used in sand foundry industry, ceramic industry, coating industry, binder in thermal insulation materials, binder for welding electrodes, acid-resistant cement, and quick-drying cement. and other additives in cement. [0003] Powder 3D printing (3DP) is a 3D printing method that utilizes droplet jetting, powder bonding technology. Under the control of the computer, according to the information of the current l...

Claims

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Application Information

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IPC IPC(8): B29C67/00B22F3/22
Inventor 田小永杨春成李涤尘
Owner XI AN JIAOTONG UNIV
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