Xjet's patented layout began in 2011, from equipment to materials, to special applications, to post-processing, and even to regional patents in Europe, the United States, and China. Xjet has quietly laid out the layout, which is in line with HP. There is a fight for the party. Before the official announcement of its multi-jet printing technology, HP had the highest number of patents, behind only 3D Systems, Stratasys and MIT. Not only the number of patents, but also its wide distribution in different materials and different application areas, HP is undoubtedly operating as a company strategy. If you think that Xjet is just a market for rapid prototyping, then you must be mistaken. In addition to the open market information, what are the unique features of Xjet's equipment? They may also enter the seemingly niche metal printing field. In the application industry, how are they in the “drilling camp� In this issue, Xiaobian and Let's unveil the veil and watch Xjet. Figure: Xjet's metal printing Similar to the famous HP, Xjet's technology sounds subversive. Xjet keywords include: nano metal jet technology, metal mixed inks, new inkjet devices and jetting methods (high temperature processing), excellent resolution, higher than SLS laser is sintered at 5 times speed. Xjet has a Game Changing style. What is special about the Xjet technology level? What kind of world is there under the water surface of the iceberg? We have analyzed the fierce Xjet from materials to equipment and special devices. material Tungsten carbide/cobalt ink composition for 3D inkjet printing Xjet's tungsten carbide/cobalt ink composition includes a liquid vehicle that acts as a carrier, as submicron particles, nanoparticles of tungsten carbide (WC), and cobalt (Co). Cobalt may also be present in the form of precursors in the ink, such as soluble organic cobalt compounds, salts or complexes. After the 3D printing of the Xjet is completed, the green body is sent to undergo a sintering process, heating under vacuum and low temperature (several hundred degrees Celsius), wherein the organic material is removed (de-bonding phase), followed by being close to Co The temperature of the melting point is carried out by liquid phase sintering. After sintering, the mechanical strength and hardness required to cut the tool can be achieved. Tungsten carbide is the main raw material of cemented carbide. The hard alloy is a composite material made of fine-grained hard alloy made of bonded metal hard alloy. It is a very hard material and is often used in mechanical and automotive engineering. Building materials industry. Carbide molds are ten or more times the life of steel molds. Cemented carbide molds have high hardness, high strength, corrosion resistance, high temperature resistance and small expansion coefficient. They are generally made of tungsten-cobalt hard alloy. In this regard, researchers at the Fraunhofer Institute in Germany have successfully used 3DP adhesive jet 3D printing technology to produce cemented carbide molds. In the opinion of OFweek3D printing network, Xjet's tungsten carbide/cobalt ink composition technology may now compete with Fraunhofer. Of course, this special ink is only one example of Xjet material technology. Xjet's comprehensive layout of material layout is still unknown. 3D Science Valley is still known through Xjet and patent applications in the photovoltaic field. OFweek3D Printing Network considers Xjet It has a special liking for the printing of special materials and special applications. device Inkjet printing system with removable printhead Xjet's inkjet printing system includes: two or more printing units capable of moving relative to each other during printing; printing units having one or more printheads collectively forming a head setting; and a controller for controlling the The movement of the printing unit is described to dynamically change the head setting during printing. Thousands of "inks" are ejected per second, which sounds a bit like large-format digital printing and textile printing. The Xjet is unique in that its jet head passes through the same area multiple times, each with a small offset, so that each The nozzles are ejected at a number of slightly different locations. Thus, the print area formed by a given nozzle will overlap the print area of ​​one or more other nozzles. Since the same area is printed by more than one nozzle, these overlapping print areas can be used to mitigate the effects of defective nozzles that are under or completely unjetted. Thus, the use of such multiple pass-through jets with overlapping print areas allows the system to form high quality prints even with a number of defective nozzles. Parameters that determine nozzle defects and that require print compensation may include, for example, injection pulses, waveforms, amplitudes, and/or temperatures. In addition, in the maintenance station area of ​​the equipment, the nozzles also undergo various maintenance procedures including, for example, flushing nozzles with liquid or air, wiping and/or brushing nozzles and/or orifices, fire spraying of the entire nozzle group or portions of nozzles, Heat or cool the nozzle or use a liquid to clean the head. The inspection results can be analyzed to detect, for example, a failed nozzle, a weak nozzle, a curved nozzle, an improper amount of ink droplets, or a misalignment of the print head, and can also replace a nozzle having a permanent defect. Special device Printing system with self-cleaning, anti-deposition and flue gas removal devices The Xjet printhead device with integrated cleaning mechanism includes a liquid dispensing head including one or more liquid dispensing nozzles contained within the nozzle plate, the liquid dispensing head being comprised of at least a first pressure and a second pressure And a shield comprising an opening in front of the nozzle, wherein the opening is configured to: a. the printing liquid when the printing liquid is dispensed from the dispensing head by the first pressure Is dispensed by the opening in the shield in a pulsed manner; b. when the cleaning printing liquid is dispensed from the dispensing head by the second pressure, the printing liquid is The capillary gap formed between the shield and the nozzle plate is drawn, thereby removing the cleaning printing liquid from the vicinity of the nozzle. (Editor) Aluminium Garden Sofa Furniture
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