Metal Binder Jetting (MBJ) is a technology that is revolutionizing the world of 3D printing, with significant implications for the metal industry. This innovative process involves layering metal powders using a liquid binding agent to create complex and durable objects.
In an interview with EASYMFG chairman, Cai DaoSheng, we gained valuable insights into the key aspects of MBJ and the strategic initiatives for 2024. DaoSheng emphasized the importance of collaboration between MBJ teams and the need for large-scale demonstrations to enhance industrial confidence. He also discussed EASYMFG’s development plans for 2024, product lines, and provided advice on designing suitable printing chambers.
“As we approach 2024, we see both opportunities and challenges ahead. Metal Binder Jetting technology is ready to continue its leading role in the digital transformation of the industry. Industry practitioners must keep track of market changes and flexibly adjust their strategies to ensure competitiveness in a dynamic environment,” said DaoSheng.
DaoSheng explained that the choice of powders plays a vital role in MBJ. Selecting the right powder is crucial for achieving the desired print density, performance, and cost-effectiveness. Currently available options have significant drawbacks. Traditional powders used in Metal Injection Molding (MIM) have poor flow properties, making it difficult to achieve proper print density and performance. On the other hand, metal powders produced using gas atomization technology are expensive and prone to deformation at high temperatures.
“Therefore, EASYMFG plans to collaborate with powder suppliers to introduce specialized MBJ powders to the market in 2024. These powders will primarily include stainless steel, high-temperature alloys, and titanium alloys. These powders will have proper fluidity and higher bulk density,” added DaoSheng.
DaoSheng believes that binding agents play a crucial role in MBJ technology. They need to have low residual sintering, high bond strength, stable printing, and resistance to print head clogging. According to him, the unique challenges of MBJ technology, such as heating during printing, provide opportunities for innovation in binding agents.
“Currently, the commercially available binding agents developed by EASYMFG have a three-dimensional permeability control within 0.05mm (equivalent to twice the pitch at a resolution of 1200 DPI). This is also the reason why parts printed using MBJ technology exhibit excellent precision in the Z-axis and lower surface quality compared to Selective Laser Melting (SLM) technology. The greater laser penetration depth in SLM technology leads to lower precision in the Z-axis and lower surface quality for parts,” explained the chairman.
EASYMFG uses binding agents that undergo a low-temperature curing process (approximately 150°C) after printing, preventing them from dissolving upon contact with a solvent. The company plans to eliminate the heating and curing stage of binding agents by developing a new set of agents for 2024, promising increased efficiency and cost reduction. Unlike other MBJ binding agents that require low-temperature heating, EASYMFG’s focus on room temperature printing and the development of non-heating binding agents underscores its commitment to improving production.
DaoSheng said, “The EASYMFG team has over a decade of R&D experience in this field, conducting extensive tests on various brands and models of print heads, such as Epson, Seiko, Ricoh, Xaar, Kyocera, etc. EASYMFG also conducts independent and collaborative research and development with the Rapid Manufacturing Center at Huazhong University of Science and Technology. The developed device includes a closed-loop system that covers all aspects of MBJ. EASYMFG’s technological advancements include powder design, sintering theory, and the development of diverse material systems.”
Regarding powder spreading, major MBJ manufacturers like Markforged (Digit Metal) and Desktop Metal (ExOne) commonly use a top-down powder spreading method, each with a unique approach. In its models, EASYMFG utilizes patented sieving and top-down powder spreading, increasing density by 5-10%. In 2024, the focus on optimizing powder spreading will mainly aim to improve compatibility and reduce dust.
DaoSheng recognizes the differences in MBJ acceptance worldwide. In developed countries, there is greater understanding and acceptance of the mass production capabilities and cost benefits offered by MBJ technology, while in China, there are challenges due to strong dominance of SLM technology in some sectors.
The chairman also clarified misunderstandings in China, where companies like Apple and Huawei chose SLM technology for producing titanium alloy electronics, mistakenly suggesting that MBJ is inferior to SLM. In reality, Apple chose MBJ technology for producing the steel housing of their watch. DaoSheng emphasized that a production-grade MBJ device can print nearly 2000 parts per day, offering comparable speed and cost to MIM while eliminating the need for molds.
“We hope that leading MBJ pioneers, who face the risk of delisting from stock exchanges, can effectively overcome their challenges and collaborate with other MBJ manufacturers like HP and GE to expand applications,” said DaoSheng.
DaoSheng presented EASYMFG’s plan to introduce a cost-controlled titanium alloy at approximately 2 yuan per gram, emphasizing a density of 98% for high-quality components. Data indicates that components can achieve full density through hot isostatic pressing for high-density applications, surpassing forged products. EASYMFG aims to expand serial production across various industries, including stainless steel, tool steel, ceramics, and others, in line with their strategic goals for 2024.
“In 2024, we will adhere to the ‘going global’ strategy. In addition to establishing subsidiaries or offices in the domestic Yangtze River Delta and Pearl River Delta regions, we will actively promote international presence for our products. We will definitely showcase our latest devices at the Formnext exhibition in Germany in 2024. We expect progress in various regions and countries, including Europe, Southeast Asia, and India,” concluded DaoSheng.
To stay up-to-date with the latest news on 3D printing, it is worth subscribing to our newsletter or following us on Twitter and liking our Facebook page.
And if you are interested in working in the additive manufacturing industry, visit our 3D Printing Jobs page, where you will find a selection of job offers in this field.
FAQ Section based on key topics and information presented in the article:
Question: What is Metal Binder Jetting (MBJ)?
Answer: Metal Binder Jetting is a 3D printing technology that involves layering metal powders using a liquid binding agent to create complex and durable objects.
Question: What are the key aspects of MBJ technology?
Answer: The key aspects of MBJ technology are the choice of suitable metal powders and binding agents. The selection of powders is crucial for print density and cost-effectiveness, while binding agents play a vital role in achieving stable printing and high bond strength.
The source of the article is from the blog reporterosdelsur.com.mx