Direct Rapid Manufacturing Technology with Laser for Metal Parts

2011 ◽  
Vol 328-330 ◽  
pp. 520-523
Author(s):  
Yong Ping Jin ◽  
Ming Hu
Keyword(s):  
Complex Shape ◽  
Selective Laser Sintering ◽  
Manufacturing Technology ◽  
Rapid Manufacturing ◽  
3 Dimensional ◽  
Metal Parts ◽  
Laser Engineered Net Shaping ◽  
Development Direction ◽  
Main Development ◽  
Net Shaping

Directly driven by CAD model, based on principle of discrete-superposition, rapid prototyping technology is the generic terms of rapid manufacturing 3-dimensional physical entities with any complex shape. One of its main development trends is direct rapid manufacturing for metal parts. Up to now, there are many methods utilizing laser beam containing selective laser melting, selective laser sintering and laser engineered net shaping. Research and development of these means for direct rapid metal manufacturing are presented in this paper. Digital direct rapid manufacturing for metal parts represents development direction of advanced manufacturing technology.

RP Technology Used for the Production of Metal Parts

2015 ◽  
Vol 818 ◽  
pp. 280-283
Author(s):  
Veronika Čapková ◽  
Ivana Zetková
Keyword(s):  
Rapid Prototyping ◽  
Modern Technology ◽  
Layer By Layer ◽  
Direct Metal Laser Sintering ◽  
Metal Parts ◽  
Laser Engineered Net Shaping ◽  
Advantages And Disadvantages ◽  
Metal Products ◽  
Net Shaping ◽  
Bottom To Top

Rapid prototyping (RP) is a modern technology which can produce components with very complicated shapes using different materials. This method also allows the production of components with shapes and geometry that would be very difficult to produce using conventional methods such as milling, welding and so on. A 3D printer builds an object from bottom to top, layer by layer. The purpose of this article is to introduce rapid prototyping technology for printing metal products. It focuses on various areas of application, advantages and disadvantages of this manufacturing technology as well as introduction of two methods DMLS (Direct Metal Laser Sintering) and LENS (Laser Engineered Net Shaping).

scholarly journals Understanding the Microstructure and Properties of Components Fabricated by Laser Engineered Net Shaping (LENS)

2000 ◽  
Vol 625 ◽  
Author(s):  
M. L. Griffith ◽  
M. T. Ensz ◽  
J. D. Puskar ◽  
C. V. Robino ◽  
J. A. Brooks ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Manufacturing Processes ◽  
Behavior Control ◽  
Metal Parts ◽  
Laser Engineered Net Shaping ◽  
Solid Models ◽  
Material Fabrication ◽  
Net Shaping ◽  
Aided Design ◽  
Additive Methods

AbstractLaser Engineered Net Shaping (LENS) is a novel manufacturing process for fabricating metal parts directly from Computer Aided Design (CAD) solid models. The process is similar to rapid prototyping technologies in its approach to fabricate a solid component by layer additive methods. However, the LENS technology is unique in that fully dense metal components with material properties similar to wrought materials can be fabricated. The LENS process has the potential to dramatically reduce the time and cost required realizing functional metal parts. In addition, the process can fabricate complex internal features not possible using existing manufacturing processes. The real promise of the technology is the potential to manipulate the material fabrication and properties through precision deposition of the material, which includes thermal behavior control, layered or graded deposition of multi-materials, and process parameter selection.

Laser Engineered Net Shaping of Commercially Pure Titanium: Effects of Fabricating Variables

2016 ◽  
Author(s):  
Yingbin Hu ◽  
Hui Wang ◽  
Fuda Ning ◽  
Weilong Cong
Keyword(s):  
Selective Laser Sintering ◽  
Three Dimensional ◽  
Pure Titanium ◽  
Weight Ratio ◽  
High Strength ◽  
Commercially Pure Titanium ◽  
Laser Engineered Net Shaping ◽  
Commercially Pure ◽  
Net Shaping ◽  
Cp Ti

Commercially pure titanium (CP-Ti) attracts a large number of attentions in biomedical, astronautical, and auto industrial areas due to its superior properties of good biocompatibility, excellent corrosion resistance, and high strength-to-weight ratio. Comparing with the conventional manufacturing processes (such as casting along with machining), laser additive manufacturing (LAM), mainly including selective laser sintering/melting (SLS/M) and laser engineered net shaping (LENS), has many advantages, such as complex shaped parts producing, more capability of shorter design-to-market time, energy consumption reducing, etc. It was reported that SLS/M has been successfully used in fabricating of CP-Ti components. Comparing with SLS/M processes, LENS has many advantages, including lower labor intensity, higher fabrication efficiency, and more capabilities for parts repairing and rebuilding. It is reported that LENS process was only used in CP-Ti coating and porous parts fabrication, there are no reported investigations on CP-Ti three-dimensional (3D) solid parts using LENS process. The investigations in this paper are going to conduct preliminary studies on effect of fabricating variables. In order to evaluate powder efficiency and parts’ quality, heights of fabricated parts and hardness on the top surface of the parts will be tested.

Research on Rapid Manufacturing Technology of Complicated Casting Mold without Pattern

2013 ◽  
Vol 774-776 ◽  
pp. 1418-1422 ◽  
Author(s):  
Feng Liu ◽  
Zhong De Shan ◽  
Chao Yi Wang ◽  
Lei Ming Chen
Keyword(s):  
High Efficiency ◽  
Low Cost ◽  
Selective Laser Sintering ◽  
Manufacturing Technology ◽  
Sand Mold ◽  
Rapid Manufacturing ◽  
Digital Manufacturing ◽  
Forming Technology ◽  
Sand Core ◽  
Rapid Fabrication

In 21th century, the product upgrading becomes faster and faster. The development of varieties of production needs rapid manufacturing technology. The rapid fabrication of sand mold & core is the key of rapid casting. In this paper, the rapid manufacturing technology without pattern was applied to produce the complicated sand molds & cores of pump case. The digital precision forming technology without pattern casting was selected to mill the outer sand mold. And the Selective Laser Sintering (SLS) technology was used to print the sand core. So the complicated sand molds and cores were fabricated rapidly without pattern. As a typical digital manufacturing technology, the rapid manufacturing technology without pattern has a variety of benefits such as short cycle, low cost, flexibility and so on. The technology that combines the sand milling and SLS provides a high-efficiency method for the Single and small batch castings.

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