3D-printed ceramics will provide a significant increase in demand for additive manufacturing equipment and ceramic materials. This trend will be more apparent for applications of engineering ceramics or advanced ceramic material.
For ceramic part production, there are higher demands for process integration and ceramic 3D printing technology. It can be more difficult to produce high-quality ceramic parts than for conventional manufacturing.
Here are five major reasons to use 3D printing technology for the manufacturing of ceramic parts.
You can create a very lightweight structure.
A function set is a single piece that replaces several components. It reduces costs of assembly and enhances product performance.
Produce personalized parts, including dentures and implants for orthopedics. ;
This opens new opportunities in logistics, spare parts supply and production on-demand.
Avoid expensive moulds by creating small-scale ceramic components.
Figure 1. Figure 1. Ceramic sensor 3D printed from lightweight ceramic; b.
Technology that is suitable for 3D printing in ceramic additive manufacture falls into one of two groups. Two types of technologies are available: one is that of simultaneous material shaping and densification. These technologies can be used to make ceramic green embryos. They require heat treatment to achieve the final product.
First, additive manufacturing processes use a higher temperature gradient. This causes greater thermal stress and ceramic damage. Due to the inclusion of multiple 3D printing techniques, the complexity of technology application and quality management in the ceramic industry increases.
In principle the 3D printed ceramic part heat-treatment problems are the same as those associated with traditional manufacturing methods. Optimizing heat treatment may be harder. The characteristics of additive manufacturing technology mean that cracking or delamination is possible during degreasing. This can be due to high levels of the binder, and low interlayer adhesion. 3D printing involves more intricate sintering than in conventional moulding. This may result in higher shrinkage and warpage. The deformation can be more dangerous than anisotropic shrinkage.
3D printing technology is known for its ability to make complex structures. It is important to understand how to solve the issues of heating ceramic parts 3D printed from ceramics, in order for ceramic producers to benefit from 3D printing technology.
University of Maryland scientists have modified a 26,000-year-old manufacturing technique to make ceramic materials. They can use solid-state batteries and fuel cells as well as 3D printing and other industrial applications.
It is widely used for batteries, electronic devices and in extreme environments. Ceramic sintering, part of the traditional sintering process for making ceramic objects takes several hours. Maryland scientists developed an ultrafast high-temperature (UHS) sintering procedure to address this issue.
Illustration: UHS sintering technique
enables structure to be created
Reports indicate that the older rapid sintering systems have some limitations. They are susceptible to low temperatures, long energy usage, as well as costly repairs.
Maryland’s team has developed a high-temperature sintering system that provides uniform temperature distribution, heating and cooling at very high rates. The sintering temperature can reach 3000 Celsius. Together, these two processes require less than 10 seconds. That’s more than 1,000 times faster compared to traditional furnace interfacing methods.
The invention sandwiched the ceramic precursor green body with two carbon bars. Through radiation and conduction it heats quickly the particles, which causes them to crystallize rapidly. Any ceramic material can easily be sintered, as long the temperature is not too high.
The researchers explained that ultrafast high temperature sintering was a breakthrough technology in ultrafast heat sintering.
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