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Office metal has completed qualification of 420 grade stainless steel (420 SS) for use on the production system platform, which leverages patent pending Single Pass JettingTM (SPJ) technology for high throughput AM production . Manufacturers can now take advantage of SPJ technology for mass production of high strength 420 SS end-use parts for demanding applications in industries such as medicine, aerospace, defense and consumer products .
Heat treated martensitic stainless steel, 420 SS is characterized by its high strength and hardness as well as resistance to corrosion in atmosphere, food, fresh water and mild acids when fully cured. 420 SS is a material commonly used in a variety of applications such as surgical and dental instruments, ball bearings, drive shafts, pump and valve components, fasteners, gauges, hand tools and high-end cutlery.
“Engineers continue to research metal additive manufacturing as a leading option to drive innovation in design and manufacturing,†said Jonah Myerberg, CTO and co-founder of Desktop Metal. “We believe that our qualification of 420 stainless steel and other high strength alloys will accelerate the deployment of our AM 2.0 solutions to customers looking to successfully mass-produce critical parts on a large scale. “
Desktop Metal’s material science team qualified and fully characterized the 420 SS printed on production system technology that meets MPIF 35 standards for structural powder metallurgy parts defined by the Metal Powder Industries Federation. 420 SS printed parts on the production system platform eliminate tooling use and minimize material waste, while representing a significant decrease in production time and part cost compared to manufacturing methods conventional.
Robotic surgical systems used in a variety of medical procedures provide surgeons with improved range of motion, improved visibility, and a level of precision unattainable with manual surgeries. These systems feature very precise motion systems with many small, complex parts. The production system offers high resolution binder jet printing, making it an ideal solution to achieve the fine characteristics required of robotic surgical instruments. For components such as lockable hinge bars, 420 SS is the desired material for its high hardness and excellent corrosion resistance. Since no tooling is required to produce these parts with the binder jet on the production system, volume production can start as soon as the design is completed, saving time and money. money on significant one-time tooling design and manufacturing costs.
Valve nozzle adapters connect nozzles to fluid systems in aerospace applications, where multiple versions of these adapters are often required to accommodate different nozzle geometries and sizes. Engineers prefer 420 SS for this type of adapter due to its excellent corrosion resistance and high hardness. With a capacity of thousands of adapters in a single build, the production system can support the manufacturing of these 420 SS components in volumes competitive with conventional manufacturing methods. Additionally, with no tooling required, many adapter geometries can be printed in a single run, saving the time and cost associated with changing tooling in conventional manufacturing processes.
Twin screw extruder mixing elements are used for mixing, composing and processing viscous materials. These parts have complex lobes around the outside of the flute that must be optimized for the extruded material, requiring a unique mixing element for each different material. With conventional manufacturing, each of these elements can be complex to produce, often requiring advanced machining techniques, multiple machining configurations, and custom fasteners. Binder jetting with production system simplifies the manufacturing process, allowing large volumes of multiple unique mixing elements to be printed in each build, reducing production cost and time compared to machining. 420 SS is an essential material in these applications for its high hardness and corrosion resistance, ensuring the elements have long life and the hardness required for extruding a wide variety of materials.
Created by the inventors of single pass binder and inkjet technology, the production system is an industrial manufacturing platform powered by Desktop Metal’s Single Pass JettingTM 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 P-50 printer paves the way for mass production of end-use parts, freeing up throughput, repeatability and competitive part costs.
In addition to the 420 SS, the production system material portfolio today includes nickel alloy IN625, stainless steel 17-4PH, stainless steel 316L and low alloy steel 4140, each of which has been qualified. by Desktop Metal. The open system platform also supports several customer qualified materials including silver and gold. The company plans to launch additional qualified metals to its portfolio, including tool steels, stainless steels, superalloys, copper, and more.
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