China3D printingNet April 28th, the leading metal adhesive jet3D printingMachine manufacturer ExOne and the University of Pittsburgh are collaborating to develop a reusable metal filter that can be put into a plastic gas mask box.
ExOne’s Adhesive Jet3D printingThe process can be used to produce metal parts with a specific porosity that can effectively filter out contaminants while maintaining air. Using its technology, the company was able to develop reusable porous metal filters of two metals: copper and 316L stainless steel. The plastic gas mask filter element was designed by the Department of Mechanical Engineering and Materials Science of the Swanson School of Engineering at Pitt University.
Preliminary testing of airflow and filtration efficiency is currently underway, and the filter is being optimized to meet the N95 respirator standard. ExOne explained that the combined force could potentially provide sustainable, sterilizable personal protective equipment (PPE) for long-term use to protect against pollutants such as COVID-19, which is the cause of the current coronavirus. Pandemic disease.
John Hartner, CEO of ExOne, said: “Our team has been working urgently to accelerate this promising and reusable solution for medical personnel on the front lines of the fight against the COVID-19 pandemic. Our customers usually offer To print porous metal filters for various purposes, we are confident that we will soon have a solution to enable medical staff to sterilize metal filters for reuse, thereby eliminating waste.
Once approved, we can provide various sizes of filters for respirators, ventilators, anesthesia masks or other equipment. “
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ExOne and Pitt for metal filters
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Respirator that is expected to be reused” alt=” has
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ExOne and Pitt for metal filters
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Respirator that is expected to be reused” width=”620″ height=”413″ />
have3D printingExOne and Pitt for metal filters 3D printingA respirator that is expected to be reused. Filmed by ExOne.
For different3D printingMetal filters create different levels of porosity
ExOne’s adhesive jetting technology uses a print head to selectively deposit liquid adhesive layer by layer onto a thin coating of metal powder until the final object is formed.Once carried out from powdered metal3D printing, It is sintered in the furnace.
Generally, the metal parts sprayed with the binder are sintered to full density. However, ExOne’s technology can establish a specific porosity level for the object in question (a metal filter in this case). However, the required porosity level of the filter varies between different metal materials.
Therefore, in order to test filters of different metals and porosity, a research team led by Dr. Markus Chmielus, associate professor of mechanical engineering and materials science at Swanson School, is using a CT scanner to analyze its microstructure and porosity. To help analyze and optimize the performance of the filter, engineering simulation software developer Ansys provides additional computer simulation support.
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The metal filter can filter various metals and porosity” alt=” ExOne owns
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The metal filter can filter various metals and porosity” width=”620″ height=”414″ />
ExOne owns3D printingThe metal filter can filter various metals and porosity. Filmed by ExOne.
“In this filter application, the adhesive spray3D printingThe advantage over other additive manufacturing methods is the ability to use the porosity of the printed parts and then fine-tune them during high-temperature densification or sintering to achieve the best filtration and airflow performance. “Dr. Chmielus explained.
ExOne said that although copper and stainless steel filters have been 3D printing, And is currently being tested at Pitt University, but it is known that copper itself has antibacterial properties for a long time. The company explained that, according to Smithsonian, the earliest record of the use of copper to kill bacteria was Edwin Smith papyrus, which is the oldest medical document in history. In addition, many studies have proven the disinfection ability of copper, including a study funded by the U.S. Department of Defense in 2015, which showed that copper alloys can reduce infections by 58%.
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Reusable and sterilizable copper filter” alt=”Close ExOne cooperates with Pitt
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Reusable and sterilizable copper filter” width=”620″ height=”414″ />
Close ExOne and Pitt cooperation3DPrinted reusable and sterilizable copper filter. Filmed by ExOne.
ExOne’s metal adhesive jet3D printingTechnology
ExOne developed the first version of their adhesive jetting technology in 1996, and has since been replaced by its sand and metal3D printingSystem adoption.The metal it chooses3D printingThe machine includes Innovent+, an entry-level system designed for R&D and small parts production. At Formnext 2018, the company launched the X1 25 PRO system, which aims to achieve greater manufacturing volume and the powder metallurgy functions of Innovent+.
About a year later, in November 2019, the company launched the X1 160PRO. The company’s largest machine to date was developed for mass production of end-use parts and castings.
In addition, ExOne has cooperated with many partners to develop its metal adhesive jetting technology.Last year, the company announced a partnership with Sandvik Additive Manufacturing to advance its adhesive jetting3D printingCraft.Both companies will work hard to spray through adhesive3D printingOptimize the use of metal powder.
The company is also cooperating with Oak Ridge National Laboratory (ORNL) to advance adhesive jetting3D printing, In order to realize the 3D processing of H13 Tool Steel.
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