HY successfully developed electron beam 3D printing medical materials by PREP method

(HY-industry technical centre)

Electron beam selective melting forming technology (EBSM) is a metal additive manufacturing technology based on a digital model file that uses a high-energy electron beam as a heat source to melt metal powder into three-dimensional solid parts in a vacuum environment. The principle is as follows:

The metal parts formed by EBSM technology have good internal quality, fast forming speed and small residual stress, and have been widely used in orthopedic medical, aerospace and other fields. However, the quality of the formed part depends largely on the forming process and the metal powder. The EBSM technology uses a relatively coarse alloy powder particle size, typically concentrated at 45-105 μm.

At present, most of the powders for electron beam metal printing are mainly vacuum gas atomization, and the powder has disadvantages such as non-metallic ceramic inclusions, hollow powder, and satellite balls. Plasma Rotating Electrode Process (PREP) is a spherical powder preparation process. The principle is as shown in the figure below.

The consumable electrode is made of metal or alloy. The end surface is heated by the plasma arc and melted into a liquid. The liquid is thrown and pulverized by the centrifugal force of the high-speed rotation of the electrode, and spheroidized under the surface tension. A powder is formed.

Has the following advantages:

(1) The material has strong customization ability, and can prepare titanium alloy, cobalt alloy, medical stainless steel, shape memory alloy, precious metal, high temperature alloy, high melting point refractory metal, and the like.

(2) High purity of powder, no non-metallic ceramic inclusions

(3) High powder sphericity and excellent fluidity

(4) Low oxygen content in powder

(5) High powder stability

(6) High powder yield

Shanghai HY Industry Co., Ltd, as a professional manufacturer of 3D printed metal powder materials in China, has a variety of powder production methods. Especially the PERP production line successfully put into operation at the end of 2017 has successfully produced CoCrMo medical alloy powder for EBSM. CoCrMo is one of cobalt-based alloys and is also known as a Stellite 6 alloy. It has high strength, excellent corrosion resistance and good biocompatibility. It is non-magnetic and nickel-free (nickel). Features <0.1%), commonly used in surgical implants such as alloy artificial joints, knee joints and hip joints. It can also be used in engine components, wind turbines and many industrial components.

As can be seen from the above figure, the CoCrMo alloy powder produced by PREP has a high sphericity and almost no hollow powder, satellite powder and gas inclusions. The metal powder prepared by the PREP method is very suitable for electron beam metal printing, and the medical powder material prepared by the PREP method can be said to be tailored for electron beam 3D printing.

Shanghai HY Industry Co., Ltd is located in Hangzhou West Lake Science and Technology Park. It is a national high-tech enterprise specializing in R&D and production of metal powder. The company currently has national and local joint laboratories for brazing materials and technology, national post-doctoral research stations, Shanghai Key Laboratory of Brazing Materials and Technology, and Zhejiang Key Enterprise Research Institute. HY Industry’s extensive theoretical knowledge and long-term practical experience have established Yatong’s leading position in the powder manufacturing industry. The company is committed to the research and development and localization of high-quality spherical metal powder materials for 3D printing. It is also equipped with multiple sets of vacuum melting furnaces, medium frequency melting furnaces, vacuum gas atomization equipment, non-helium atomization and water atomization equipment. Successfully developed 316L, 304L stainless steel, 17-4PH, M2, D2, H13, 30Cr3, 18Ni300 (MS1), AlSi10Mg, AlSi12, IN718, CoCrMo, TC4, etc. Suitable for laser/electron beam selective melting, net near forming and cladding process Metal powder.

HY-industry is qualified  Nickelalloy&cobalt alloy materials supplier.

HY has 20 years craftsman spirit, Alloy Solution expert, Qualified supplier for GE, Siemens

Inconel 718, Monel 400,Stellite 6,Stellite 12,Incoloy 800ht,Incoloy 901,Nimonic 80A,Kovar,Invar 36,Inconel 625,Hastelloy C276, Incoloy 825,Stellite series are mature productes of us.

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