3D Printer
August 9, 2022, a video of a large truck driving on the highway has sparked widespread concern among netizens, because the truck pulled a huge ring, accounting for four lanes. It is reported that this is the Guinness World Record for the largest overall ring rolled steel "world's first ring", with a diameter of 15.673 meters, being shipped from Jinan to the port of Weifang, Shandong port terminal.
Transport it special vehicles have a total of 106 wheels, including 10 tractor-trailer, the rear of the flat car 96, the highway exclusive 4 lanes. The flatbed can control the steering angle of different wheels and the overall height of the flatbed through a separate steering system. This forging ring is a fourth-generation nuclear power unit support ring, manufactured by Shandong Elite Energy Equipment Co., Ltd. Nearly 50 meters of the circumference of the whole body smooth and flat, one piece of molding, without a weld in the middle, can carry the weight of the nuclear power unit reactor vessel 7,000 tons, equivalent to the weight of the top 100 moving trains running. After installation in place for 60 years without replacement, representing the highest technical level of nuclear power forgings.
The manufacturing process of this large ring is as follows.
① First, metal billets of smaller dimensions are used as base elements, stacked layer by layer, placed in a vacuum environment, and sealed and welded.
② Heating to high temperatures and then repeated rotary rolling to completely bond the interface between the layers.
③ Stretching the rings as they are rotated and rolled, to a diameter of more than 10 meters.
④ Quenching to improve the rigidity, hardness, wear resistance, fatigue strength, and toughness of the rings.
⑤ Machining of the performance may also be required.
So, is it possible for this big ring to be manufactured by 3D printing technology in the future? China 3D printing network think can 2021, the national additive manufacturing innovation center, Xi'an Jiaotong University Lu Bingheng academician team using arc fusion wire increase and decrease material integration manufacturing technology, manufacturing completed 10m level high strength aluminum alloy heavy launch vehicle connection ring sample, in the overall manufacturing process stability, precision control and deformation and stress regulation, etc. are to achieve a major technical breakthrough.
The base of the ring can be rotated, and the print head uses electric arc as the heat source to melt the metal wire material, and under the control of the program, the metal ring is gradually formed by line - surface - body according to the 3D digital model, and the surface reduction machining is carried out at the same time during the printing process. This prototype weighs about 1t, and the innovative use of multi-filament collaborative process equipment has greatly simplified the manufacturing process, significantly reduced the cost, and shortened the manufacturing cycle to 1 month.
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With more and more cars in the city, and some people considering that cycling can serve the purpose of proper exercise, the number of people who choose to travel by bicycle for short distances is increasing. Since, there are more cars and also more people on the street, this brings potential hidden dangers to safety.
On August 15, 2022, nFrontier, a German innovation studio, premiered a revolutionary new bicycle prototype helmet, PYLO, using 3D printing technology, which the company claims is "the world's smartest bicycle helmet." The PYLO is unique in that it combines for the first time the latest digital, safety, design and manufacturing technologies in bicycle helmet design. Designed with the needs of urban commuters and athletes in mind, the helmet combines lightweight materials with contemporary fashion design and cutting-edge technology.
For example, the helmet shell's 3D printed nylon structure is optimized to absorb more deep impact than traditional mass-market polystyrene helmets. Overall, PYLO integrates a number of industry-first features, including key automotive safety and driver assistance technologies, as well as a range of smart safety tech such as LIDAR radar sensors, 3D immersive sound, LED light indicators, face shield airbags, an intelligent 360° surround safety system and multifunctional 3D knit inlays. With all these innovations, so the company calls it "the world's smartest bike helmet" will revolutionize bike riding, making it safer, smarter and more high-tech than ever before. Innovative high-tech solution that will revolutionize bicycle riding.
The helmet is currently being reviewed for market entry. nFrontier CEO Daniel Buening explains, "Our vision is to develop exciting next-generation helmets that will advance safety technology for bicycle riders into the 21st century. Bringing together different technologies, features and materials into one helmet."
For the first time in bicycle helmet design, the 3D knitted liner is used as a liner layer in the middle with the helmet shell, is not only makes the helmet not only strong, but also maintains an optimal fit with the user and provides maximum wearing comfort.
The liner is double-layered, with cotton on one side and fleece on the other, and can be worn on either side depending on the season to keep the contact surface cooler or warmer. For extra protection and better visibility in bad weather, the helmet is also equipped with a sun visor and integrated LED lights. In addition, PYLO's most prominent feature is the world's first face shield airbag designed for a bicycle helmet, which pops up from behind when faced with unavoidable danger, protecting not only the skull but also the lower face from injury, something not available in traditional helmet designs.
nFrontier has also developed a 360° surround, 3D immersive sound safety system with LiDAR at its core. This sound-based warning system provides a higher level of assistance than vision- and AR-based systems. It can alert cyclists to visual blind spot conditions or provide exact location and direction based on navigation. The helmet is also equipped with LED head and tail lights and LED indicators that can be activated by simply double-clicking on the left or right side of the helmet while cycling, further improving safety in heavy urban traffic. The gyroscope sensor automatically detects the rider's movement to turn on the brake light.
All helmet functions are controlled by the rider through the app, such as turning the headlight on or off and connecting wireless sound headphones.
With the global impact of the epidemic and anxiety over public transportation, the popularity of cycling has accelerated dramatically and it can be an effective alternative to commuting. This trend is accelerated by a growing number of products, including easy-to-maneuver, mid-priced bicycles and hybrid, advanced (e-)bicycles.
nFrontier is a pioneering, impact-oriented innovation studio that accelerates the development and launch of industrial products through 3D printing technology. Making the process faster, more successful, more digital and sustainable. It is enabled by the expertise, high-tech equipment and infrastructure provided by technology partners such as Stratasys (3D printing), Franka Emika (tactile robotics), AutoDesk (hardware and software development), Vajo (VR/XR products) and KeyShot (3D rendering software).
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3D printer is, without a doubt, a very attractive machine for young people and middle-aged people, it can trigger your curiosity to get in touch with it. It is also quite useful in practice, it appears more and more common in educational scenarios such as school laboratories or classrooms, and it can also save time and money by printing the objects you want. But picking out the right 3D printer for you is not an easy task, so here are some brief instructions on how to pick one and a recommended desktop 3D printer.
1. Printer type
First, check the type of printer you want. There are three most common types, each of which is suitable for users with different levels of experience. For example, hobbyists prefer to use a fused deposition molding (FDM) printer, which can heat and extrude plastic. This type is the least expensive of the three. The second type is stereolithography, where the printer uses UV light and a photosensitive liquid to harden the model. The third type is called selective laser sintering (SLS), which uses a laser to melt the powder for printing.
2. Resolution
Resolution is the level of detail you will get in the print. The smaller the resolution, the more detail the 3D printer can print. High quality printers can print up to 50 or 70 microns.
3. Supported Materials
The most common materials used in 3D printers for printing are PLA (polylactic acid) and ABS (acrylonitrile butadiene styrene), which are thermoplastics that come in spools and must be replaced when the printer runs out. Higher-end models support more materials such as TPU, TPE, HIPS, PC, NYLON, ASA, PP, PETG, PVA, fiberglass infusion, carbon fiber infusion, metal infill, and even wood infill.
4. Print bed
Another thing to consider is the print bed. It can be heated and unheated. ABS filaments require a heated bed, while you can use PLA with a non-heated bed. the bed depends on the material you will be using, but it is also useful to know if the bed is pliable so you don't damage the finished product.
5. Safety
When using a 3D printer, it is possible to use heated plastics. These plastics can burn your skin. The extruder and bed can also get hot, so be careful. More importantly, the fumes from heated plastic are potentially dangerous. Make sure you place the printer in a well-ventilated area while it's working.
Desktop 3D printer recommendation: Flying Bear 3D Ghost6
The Flying Bear Ghost6 3D printer is a perfect entry-level printer. The best thing about this model is its clear and simple user interface with a color screen. It is a plug-and-play, easy-to-use 3D printer that is ready to use right out of the box, just install the filament cartridge and start using it. full closed shape, fully insulated, makes for better printed models. This 3D printer is priced right for a wide range of users in the teenage and middle-aged age groups.
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With the mature development of 3D printing technology, various types of 3D printers have penetrated into the production life of people. Among them, light-curing resin 3D printers have become the majority of the popular choice of high-precision models want to...
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Stereolithography (SLA), conceived by American Chuck Hull (who later became the founder of 3D Systems) in 1986, became the first 3D printing technology to come to market. The process is based on the photopolymerization of UV-sensitive resins using lasers and...
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