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Office metal qualified the use of 316L stainless steel for the production system platform, which leverages patent-pending Single Pass JettingTM (SPJ) technology designed to achieve the fastest manufacturing speeds in the market. metal additive manufacturing. Known for its corrosion resistance and excellent mechanical properties at extreme temperatures, 316L stainless steel is well suited for applications under the most demanding conditions, such as parts exposed to marine or pharmaceutical processing environments, food preparation, medical devices and surgical tools. It also exhibits excellent weldability by standard fusion and strength methods.
“Qualifying 316L stainless steel with prominent mechanical properties on the production system platform is part of our aggressive roadmap to support a range of materials for binder blasting and demonstrates the benefits SPJ technology, which enables mass production throughput without sacrificing part performance. and repeatability, â€said Jonah Myerberg, co-founder and CTO of Desktop Metal. “With 316L on the P-50 production system, companies will now be able to take advantage of additive manufacturing to produce complex end-use parts suitable for use in harsh environments at competitive volumes and costs. conventional manufacturing â€.
Through extensive testing, Desktop Metal’s Materials Science team has validated that 316L stainless steel printed on production system technology and sintered by Desktop Metal meets MPIF 35 standards for defined structural powder metallurgy parts. by the Metal Powder Industries Federation. Parts printed with 316L have demonstrated excellent mechanical properties and corrosion resistance, while significantly reducing production time and part cost.
Main applications of 316L stainless steel
Rocker arms are used to open and close the intake and exhaust valves on a marine outboard engine. Using 316L extends part life and provides corrosion resistance against harsh saltwater environments. Manufacturing on the P-50 production system enables the production of over a thousand parts per day with rib characteristics and cutouts to provide adequate strength and rigidity while maintaining low weight and small footprint by compared to standard cast iron alternatives, which require up to 8 to 14 weeks lead time.
Heavy industry fluid connectors used in many chemical processing plants should be made of 316L for corrosion resistance against chemicals moving through the part. The connector’s complex internal channels make it impossible to manufacture a single component using conventional manufacturing methods. The P-50 production system can print the 316L fluid connector as a single, consolidated component and can support throughput of nearly 5,500 pieces per week, at a fully loaded cost of approximately $ 6. $ 85 per piece.
Since 316L is surgical grade steel, it is an ideal material for medical applications such as surgical nozzles. By eliminating tooling, additive manufacturing enables mass production runs of different sized nozzles without delay, with internal channels optimized for individual patient needs.
Printing on the P-50 production system eliminates the multiple assembly steps otherwise required for machining, and results in throughput of over 24,000 parts per week at approximately $ 2.50 per part. In comparison, machining the same part would cost $ 20.00 to $ 40.00 per part and take up to two months to create the same number of parts the P-50 can produce in just one week.
High contact parts like this shift knob require materials that are easy to sanitize. 316L is an optimal material choice because it offers excellent corrosion resistance and is easy to clean. This textured shifting is an example of mass
customization made possible by the binder jet on the production system, which supports up to 200 pieces per build and up to 6,700 pieces per week. In comparison, casting would take 8-14 weeks for tooling, just to start volume production.
“As innovators in the automotive, medical, consumer products and petrochemicals industries continue to reap the benefits of additive manufacturing, by implementing applications made possible with 316L stainless steel, we will begin to see adoption. even more prevalent binder jet technology, â€Myerberg said. “Materials that grow
the limits of what AM technology can do will continue to advance the industry and generate unprecedented throughput while dramatically reducing costs and waste â€.
Large-scale 3D printing of metal parts
Created by the inventors of single-pass binder jet and inkjet technology, the production system is an industrial manufacturing platform powered by Desktop Metal’s SPJ technology. It is designed to achieve speeds up to 100 times faster than traditional powder bed fusion additive manufacturing technologies and enable production quantities of up to millions of parts per year at competitive costs compared to conventional mass production techniques.
The production system platform consists of two printer models: the P-1, a solution for process development and mass production applications, and the P-50, a mass production solution to large form factor for end-use parts, scheduled to launch commercial shipments in 2021. The platform combines Desktop Metal engineering binders with an open materials platform, allowing customers to produce high performance parts using the same low cost metal powders used in the metal injection molding (MIM) industry. An inert processing environment allows compatibility with a variety of materials, including the now qualified 316L stainless steel as well as high performance alloys and even reactive metals, such as aluminum and titanium.
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