Spherical titanium powder for 3D printing
We further understand 3D printing technology by introducing metal 3D printing materials applied in aerospace, automobile manufacturing, jewelry, medical and other industries.
What is metal 3D printing?
Metal 3D printing is a kind of digital thermal processing technology. Currently, 3D printing technologies for metal preparation mainly include: precast laser melting/sintering (SLM/SLS), electron beam precast melting (EBSM), and laser near-net shaping (LENS).Compared with traditional technology, metal 3D printing has the advantages of direct molding, no mold required, personalized design and complex structure production, high efficiency, low consumption and low cost. But because it is digital thermal processing, deformation is unable to eliminate, the amount of deformation needs to be controlled from the process and experience, and finally, through CNC machine tools and other technology post-processing.
What are metal 3D printing companies at home and abroad?
Although 3D printing has only become popular in China in recent years, the development of 3D printing started in the 1980s.Argen Corporation of the United States (especially strong in the field of dental metal materials), Carpenter Technology of the United States, Concept Laser of Germany, CPM of the United Kingdom, EOS of Germany, Legor Group of Italy, LPW Technology of the United Kingdom, Pyrogenesis of the United States (especially good at the field of defense), Sandvik of Sweden, SLM Solutions of Germany and other enterprises in their respective metal printing field provide a series of industrial Solutions.
In where is metal 3D printed material used?
The application fields of metal 3D printing materials are quite wide, such as petrochemical engineering applications, aerospace, automobile manufacturing, injection mold, light metal alloy casting, food processing, medical treatment, paper making, power industry, jewelry, fashion and so on.
However, due to the material properties of metal 3D printing materials, they all have a specific range of application fields. Therefore, the selection process of metal 3D printing materials is a process of weighing multiple factors. Moreover, the 3D printing metal cannot be determined only by the parameters of the metal 3D printer. Each metal material has its own limit points suitable for its own characteristics, including application, function, stability, durability, aesthetics and economy, which are all factors to be considered by designers.
The most widely used metal powder alloys for metal 3D printing materials include pure titanium, titanium alloy, aluminum alloy, nickel-based alloy, cobalt-chromium alloy and copper-based alloy.
We mainly introduce the application of pure titanium and titanium alloy in 3D printing.
At present, the pure titanium used in the market, also known as commercial pure titanium, is divided into grade 1 and grade 2 powder, grade 2 is stronger than grade 1, and has the same corrosion resistance for most applications. Because pure titanium grade 2 has good biocompatibility, it has wide application prospect in medical industry.
Titanium is the key of titanium alloy industry. At present, used in 3 d printing metal titanium alloy is mainly 23 level grade 5 titanium alloy and titanium alloy, because of its excellent strength and toughness, corrosion resistance, low density and biocompatibility, so have very ideal in the aerospace and automotive applications, and, because of the high strength, low modulus and fatigue resistance is strong, is applied to the production of medical implants. Titanium alloy grade 23, higher purity, is the same as the god of dental and medical titanium grade.
What problem metal 3D printing has?
Although 3D printing is a free structure manufacturing technology, there are many processing methods to avoid the pain points of 3D printing post-processing. Therefore, the numerical control machine tool processing technology used in the traditional manufacturing industry is particularly important, which is complementary to 3D printing. Different products can change the leading manufacturing process when using these two technologies, and the products will be more perfect.
As for the real processing of a nearly perfect metal parts, equipment carrier is important, but the need for software, process, material coordination, of course, with metal 3D printer manufacturing parts or processing products, first need to be familiar with the material, and then talk about precision machinery. In addition, metal printing, because of the support problem, will lead to the late parts can not be processed, may need to consider more material composition ratio to meet the impact of other factors in the printing process on the material characteristics. Take the 3D printing of aerospace parts as an example. The metal parts used in aerospace are all in extreme environments with strong corrosion resistance, high temperature resistance and high metal strength. If you are not familiar with the material characteristics, how can you use 3D printing to control the manufacturing of metal parts? Accordingly, be familiar with material to appear particularly important.
The cost of metal 3D printing materials is relatively high. On the one hand, most of the metal 3D printing materials are imported. On the other hand, the research and development of new metal printing materials in the early stage requires a large amount of scientific research funds and human and material resources. However, the development of special metal 3D printing raw materials is an inevitable factor to promote the development of metal 3D printing, and it can also give birth to the development of new industries.
New development and batch production of powder products
|Category||Alloy grade and characteristics||Standard|
|Alloy grades||GR1,GR2,GR5, Ti40，Ti60，|
|Powder size||0-20μm, 15-45μm, 15-53μm,|
53-105μm, 53-150μm, 105-250μm
|Degree of sphericility||Spherical spherical or nearly spherical, |
microscopic particles Ψ 0 0.90 or higher
|Appearance quality||Visible silver gray, no obvious oxidation color particles|
|Preparation process||Vacuum consumable + forging/pouring rod|
+ electrode induction pure smelting +
supersonic atomization powder
+ sieve classification + inspection package
|Package||Vacuum packaging (aluminum foil bag) or argon filled |
protective packaging (aluminum bottle)
|3D printing application||SLM preselected laser melting, EBM electron beam melting,|
LMD laser metal deposition, etc
|Other applications||PM, MIM, HIP, SP, welding repair, etc||-|
Mechanical properties of titanium alloy powder 3D printing
|Alloy grades||Material forming process and state||Mechanical properties of|
Titanium alloy powder
|Preselected laser melting/sintering heat treatment state||1040-1130||950-1010||8-18|
|Heat treatment state of laser cladding forming||950-1130||830-1080||9-12|
|Forging annealing state||≥895||≥825||≥8-10|
Titanium alloy powder
|Heat treatment state of laser cladding forming||1080-1150||910-1030||6-15|
|Forging annealing state||≥1030||≥910||≥8|
Titanium alloy powder
|Heat treatment state of laser cladding forming||950-1200||855-970||8-14|
|Forging annealing state||≥930||≥855||≥8~10|