Unlock instant, AI-driven research and patent intelligence for your innovation.

Three-dimensional (3D) printing ceramic slurry applied to cast molding core and preparation method thereof

A 3D printing and ceramic slurry technology, applied in the field of materials, can solve problems such as printing complex casting cores, achieve good development prospects, reduce settlement, and ensure quality

Active Publication Date: 2020-06-12
深圳市光韵达增材制造研究院 +1
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a 3D printing ceramic slurry applied to casting cores, aiming to solve the problem of providing a ceramic slurry suitable for 3D printing of casting cores to meet the needs of printing complex casting cores

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Three-dimensional (3D) printing ceramic slurry applied to cast molding core and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The embodiment of the present invention also provides a method for preparing a 3D printing ceramic slurry applied to a casting core, comprising the following steps:

[0021] According to the above formula of 3D printing ceramic slurry applied to the casting core, weigh each raw material for later use; put the resin, dispersant, photoinitiator, UV stabilizer and rheological additive into the reaction container and perform ball milling until the components Completely dissolve; then add the core powder, and ball mill for 1-3 hours at a speed of 200-240r / min, collect the ball-milled material and let it stand to obtain the 3D printing ceramic slurry applied to the casting core .

[0022] In the embodiment of the present invention, the step of putting the resin, dispersant, photoinitiator, ultraviolet stabilizer and rheological additive into the reaction vessel for ball milling until each component is completely dissolved, specifically includes: putting the resin, dispersant ...

Embodiment 1

[0027] Weigh 30g of 3,5-official aliphatic urethane acrylate, 78g of trimethylolpropane triacrylate in a 1L ball mill jar with 1kg of ground zirconium balls, then add 14g of BYK-163 (dispersant ) and 10g of photoinitiator TPO, 2g of UV stabilizer (Eversorb UR-210), ball milling at 160r / min, adding 0.37g of rheological additive 6900, and ball milling for 0.5h. After each component is completely dissolved, add 200g core powder into the ball mill jar. And after 2 hours of ball milling at a rotational speed of 240r / min, the 3D printing ceramic slurry applied to the casting core was collected, and the slurry could be directly used for printing on a light-curing printer. After testing, the viscosity of the slurry is 1.3pa.s, which can meet the printing requirements. After 15 days at room temperature, the slurry has no obvious settlement phenomenon.

Embodiment 2

[0029] The epoxy aliphatic urethane acrylate that takes by weighing 60g, the hexanediol diacrylate of 40g are housed in the 1L ball mill jar of 1kg grinding zirconium ball, then add the Disponer-9850 (dispersing agent) of 15g and 7g wherein Photoinitiator 907, 1g UV stabilizer Eversorb UR-220, 0.5g rheological additive KYC-426 ball milled at 160r / min, ball milled for 0.5h. After each component is completely dissolved, add 320g core powder in the ball mill jar. And after 3 hours of ball milling at a rotational speed of 230r / min, the 3D printing ceramic slurry applied to the casting core was collected, and the slurry could be directly used for printing on a light-curing printer. After testing, the viscosity of the slurry is 4.3pa.s, which can meet the printing requirements, and there is no obvious settlement phenomenon after being placed at room temperature for 15 days.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention is applicable to the technical field of materials, and provides a three-dimensional (3D) printing ceramic slurry applied to a cast molding core and a preparation method thereof. The slurry is formed by compounding resin, mold core powder, a dispersing agent, a photoinitiator, an ultraviolet stabilizer and a rheological additive. Through adding the ultraviolet stabilizer, the stress distribution in a green-ware can be well controlled, so that the cracking risk in the degreasing process is greatly reduced, and the quality of a ceramic printing finished product is ensured; the dispersing agent and the rheological additive have a synergistic effect so as to jointly regulate and control a settling property of a slurry system; by adding the rheological additive, a three-dimensionalnet structure can be formed in the slurry, so that large particles are prevented from sinking; with the subsidiarity of the dispersing agent, dispersing agent long chains wrap the surfaces of the particles, so that the particles are greatly bonded with the resin so as to reduce settlement, a slurry settling property is remarkably improved, and the shelf life of the slurry is prolonged; and in addition, the slurry can be applied to 3D printing of the cast molding core, so that a mold core component with a complicated 3D structures is manufactured.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a 3D printing ceramic slurry applied to a casting core and a preparation method thereof. Background technique [0002] As an emerging technology, ceramic 3D printing technology has the advantage that it is not limited by molds and can directly form more complex structures. It has high production efficiency in small batches, short production cycle and low cost, so it can be widely used in the production and preparation of casting cores. . Among them, SLA (Stereo Lithography Apparatus, stereolithography 3D printing technology) is currently the mainstream and most widely used ceramic 3D printing technology. Compared with other methods such as SLS (Selective Laser Sintering, Selective Laser Sintering, ), DLP (Digital Light Processing, digital light processing), etc. have great advantages in molding quality and molding size limitation. [0003] Casting cores are common...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/00B22C1/02B22C9/10B33Y70/10
CPCB22C1/00B22C1/02B22C9/10B33Y70/00
Inventor 顾成言陆青肖华军肖坦
Owner 深圳市光韵达增材制造研究院