1. 3D Printer (Main System A)
1) Types of 3D Printing : PBF (Powder Bed Fusion)
2) Laser type : Yb(Ytterbium) fiber Laser, one or more
3) Laser power : 400 W or more
4) Build volume : 245 x 245 x 325 mm or more (height incl. build plate)
5) Laser beam repetitive positioning accuracy : ±50㎛ or less
6) Z-axis positioning accuracy : ±5㎛ or less
7) Minimum layer thickness : 30㎛ or less
8) Oxygen ratio of equipment inside : 0.2% or less
9) Process monitoring module: Vision inspection system before and after additive process
10) Process monitoring module: Melt pool inspection system during additive process
11) Process monitoring module: Process monitoring reporting system with available users settings
12) Process parameter setting module : Users can modify with open structure
13) Door glove :A door glove system with access inside of it while chamber being locked
14) Fume controlled exhaust system : Air flow control function for multi material fume removal
15) Multi material supply control function : Material feeding speed control function
16) Multi-material recoating control function : Recorting speed control function
17) Fume filter : One-time use, over 2,000 hours

2. 3D Printer Material Replacement Module (Main System B)
1) Types of 3D Printing : PBF (Powder Bed Fusion)
2) Build volume : 245 x 245 x 325 mm or more (height incl. build plate)
3) Z-axis positioning accuracy : ±5㎛ or less
4) Minimum layer thickness : 30㎛ or less
5) Laser additive available, compatible with main system A
6) Consists of powder supply module, powder deposition module, and used powder collect module
7) Process parameter setting module : Users can modify with open structure
8) Fume controlled exhaust system: Air flow control function for multi material fume removal
9) Multi material supply control function :Material feeding speed control function
10) Multi-material recoating control function : Recorting speed control function

3. 부속장비(Accessories)
1) Integrated Operation SW
가. It should be possible Import, Slicing, and Process settings of STL files
(Printout Parts, Supports, etc.).
나. It should be possible adjust parameters in process settings.
(layer thickness, laser parameters, gas differential pressure, recoating speed, etc.)
다. It should be provided laser automatic path generation association,
working time and irradiate hour by each layer, etc.
라. In order to improve fume removal efficiency, it should be provided an optimized laser scanning modification function.
마. The integrated operation software must provide a permanent version.