Original Title: Breakthrough in Additive Manufacturing Technology for Ti-6Al-4V
Electron Beam Fuse On May 11, 2021, the Antarctic Bear learned that recently,
Xi'an Zhirong Metal Printing System Co., Ltd. (Xi'an Zhirong) announced that it
had made a breakthrough in the manufacturing technology of titanium alloy
electron beam fuse additives, mastered the combination of printing process
parameters to achieve excellent mechanical properties, especially high fatigue
properties, and achieved excellent mechanical properties. It lays a solid
foundation for the application of electron beam fuse metal additive
manufacturing technology in large aviation titanium alloy load-bearing
structural parts. At the end of 2020, Xi'an Zhirong commissioned Shenyang
Institute of Metal Research, Chinese Academy of Sciences, to carry out X-ray
flaw detection and high-cycle fatigue limit test under different directions and
stress ratios by using Ti-6Al-4V alloy materials formed by ZcompleX3 electron
beam fuse metal additive manufacturing system developed and manufactured by
itself. After HIP treatment and double heat treatment of solid solution in
two-phase region and low temperature aging, the tension-tension and
tension-compression high cycle fatigue limits in X and Z directions of the
specimens are higher than the requirements of the technical standard for
Ti-6Al-4V bars, and the data consistency is excellent. ZcompleX3 Fuse Electron
Beam Metal Printer Test report issued by Shenyang Institute of Metal Research,
Chinese Academy of Sciences Electron Beam Fuse Additive Manufacturing Electron
beam fuse additive manufacturing (EBAM) is a cutting-edge technology in the
field of 3D printing with electron beam as the heat source. Only a few companies
in the world,
Titanium
6Al4V wire, such as Sciaky in the United States and Xi'an Zhirong in China,
can provide commercial products. Expand the full text The technical principle is
as follows: in a vacuum environment, an electron beam with high energy density
bombards a metal surface to form a molten pool, a metal wire is fed into the
molten pool through a wire feeding device and is molten, the molten pool moves
according to a pre-planned path, and the metal material is solidified and
accumulated layer by layer to form compact metallurgical bonding until a metal
part or blank is manufactured. Schematic diagram of electron beam fuse additive
manufacturing technology Shaanxi Satellite TV's Report on Xi'an Intelligent Fuse
Electron Beam Metal 3D Printing System in 2017 The characteristics of this
technology are very obvious,
nickel
titanium wire, such as printing in vacuum environment, effectively avoiding
the mixing of impurity elements, fast forming speed, high material utilization
rate, stainless steel fuse efficiency up to 15 kg/H, suitable for rapid
manufacturing of large structural parts, good consistency of forming process,
and so on; It can be used for additive manufacturing of functional gradient
materials (FGM) and metal matrix composites, as well as processing of refractory
metals such as tungsten, molybdenum,
3d titanium wire ,
titanium
bar grade 5, niobium and tantalum. However, the surface accuracy of the
parts is not high, and CNC processing is needed in the later stage. Some of the
metal parts printed by Xi'an Zhiyu Electron Beam Fuse have been machined by CNC
Titanium alloy 3D printing is a powerful tool in the field of aerospace. In
aviation manufacturing, foreign titanium alloy electron beam fuse additive
manufacturing technology has been successfully applied, such as Lockheed Martin
F35 stealth aircraft flaperon wing spar, vertical tail rear spar, Airbus
aircraft upper wing, etc. This application not only saves costs, but also
greatly improves the delivery time. The corresponding application in China is
still in a blank state. According to Antarctic Bear, Sciaky used electron beam
additive manufacturing (EBAM) technology to print more than 12000 pounds (5443
kilograms) of titanium in 2020. Lockheed Martin produces the F35 stealth
aircraft. Titanium is an important structural metal developed in the 1950s.
Titanium alloys are widely used in various fields because of their high
strength, good corrosion resistance and high heat resistance. For example, the
amount of titanium alloys in military aircraft can reach 20% -25% of the weight
of aircraft structure, and in aero-engines, the amount is generally 20% -30% of
the total weight of the structure. The first practical titanium alloy is
Ti-6Al-4V, which was successfully developed in the United States in 1954. It is
the trump card alloy in the titanium alloy industry, and many other titanium
alloys can be regarded as its modification. The use of this alloy has accounted
for 75% ~ 85% of all titanium alloys. The traditional processing method of
titanium alloy is difficult to process, the processing cycle is long, the
material utilization rate is low, and some large structures have complex shapes
or special specifications, which are difficult to achieve by forging. According
to statistics, the material utilization rate of large aviation titanium alloy
parts in China is very low, not more than 10% on average, and a large number of
tooling dies are needed for die forging and casting, which leads to the increase
of research and development costs. By using metal additive manufacturing
technology to produce titanium alloy parts, the integration of structure can be
realized, the cost and cycle can be reduced, the purpose of rapid response and
mold-free integrated manufacturing can be achieved, more than two-thirds of
materials can be saved, more than half of numerical control processing time can
be reduced, no mold is needed, and the development cost, especially the first
and small batch development cost, can be greatly reduced. About Xi'an Zhirong
Xi'an Zhirong Metal Printing System Co., Ltd. is one of the few metal 3D
printing technology companies focusing on the electron beam heat source
technology route in China. Its self-developed fuse-based electron beam metal
additive manufacturing system is suitable for high-speed and low-cost
manufacturing of large metal structural parts. In the field of fuse electron
beam metal printing technology and powder bed electron beam metal printing
technology,
titanium
bar gr5, it has the core technology of independent intellectual property
rights. It designs and produces the Zcomplex ® series of fusible electron beam
metal printing systems based on its leading EBVF3 ® technology platform and the
ZScan ® series of powder bed electron beam metal printing systems based on its
exclusive SmartBeam ® technology platform. In order to expand the application of
aviation titanium alloy structural parts with high material performance
requirements, especially those bearing fatigue loads, Xi'an Zhiyu Technology
Team has carried out a large number of research on titanium alloy electron beam
fuse additive manufacturing technology since 2017 and made a breakthrough by the
end of 2020. Return to Sohu to see more Responsible Editor:.
yunchtitanium.com
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