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What kind of metal can be used for 3D printing?

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Update time : 2019-07-30 15:35:16
3D printing technology is a kind of rapid prototyping technology, also known as additive manufacturing technology, and is known as the core technology of the "third industrial revolution". Metal 3D printing is considered to be the leading direction of manufacturing in the future. The metal powder material is the material basis of metal printing, and it is also a breakthrough in the development of 3D printing technology.

Titanium alloy

Titanium alloy has the advantages of high temperature resistance, high corrosion resistance, high strength, low density and biocompatibility. It has been widely used in the fields of aerospace, chemical industry, nuclear industry, sports materials and medical equipment. Titanium alloy parts prepared by traditional forging and casting technology have been widely used in high-tech fields. For example, the proportion of titanium used in US F14, F15, F117, B2 and F22 military aircraft is: 24%, 27%, 25%, 26%. And 42%, a Boeing 747 aircraft with a titanium volume of 42.7t. The traditional forging and casting methods for the production of large-scale titanium alloy can’t be applied widely due to unfavorable factors such as high product cost, complicated process, low material utilization rate and subsequent processing difficulties. Metal 3D printing technology can fundamentally solve these problems, so this technology has become a new technology for directly manufacturing titanium alloy parts in recent years.

Aluminum alloy

Aluminum alloys have excellent physical, chemical and mechanical properties and have been widely used in many fields, but the properties of aluminum alloys (such as easy oxidation, high reflectivity and thermal conductivity) increase the difficulty of selective laser melting. At present, there are problems such as oxidation, residual stress, pore defects and density in the SLM-formed aluminum alloy. These problems are mainly improved by a strict protective atmosphere, increasing laser power (minimum 150 W), and reducing the scanning speed.

stainless steel

Stainless steel has the characteristics of chemical resistance, high temperature resistance and good mechanical properties. It is the earliest material used for 3D metal printing due to its good powder formability, simple preparation process and low cost.

Superalloy

Superalloy refers to a kind of metal material that can work for a long time under the high temperature of 600 °C and a certain stress environment based on iron, nickel and cobalt. It has high temperature strength, good resistance to hot corrosion and oxidation, and good plasticity and toughness. At present, it can be roughly classified into iron-based, nickel-based and cobalt-based alloys according to the type of alloy matrix. Superalloys are mainly used in high-performance engines. In modern advanced aeroengines, the use of high-temperature alloy materials accounts for 40% to 60% of the total mass of the engine. The development of modern high-performance aero engines is increasingly demanding the temperature and performance of superalloys. The traditional ingot metallurgy process has a slow cooling rate, severe segregation of certain elements and the second phase in the ingot, poor thermal processing performance, uneven organization and unstable performance. 3. 3D printing technology has become a new method to solve the technical bottleneck in the formation of superalloys.

Direction of development

  1. How to strengthen the relationship between material structure and properties on the basis of existing materials, further optimize process parameters according to the nature of materials, increase printing speed, reduce porosity and oxygen content, and improve surface quality.
  2. Develop new materials for 3D printing, such as developing new materials with excellent corrosion resistance, high temperature resistance and comprehensive mechanical properties.
  3. Revise and improve the technical standard system for 3D printing powder materials, and realize the institutionalization and normalization of metal material printing technology standards.

Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional 3D printing powder materials manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality 3D printing powder materials, please feel free to contact us and send an inquiry.


 
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