Item_Description.pdf

DEPARTMENT OF THE AIR FORCE

OKLAHOMA CITY AIR LOGISTICS COMPLEX (OC-ALC)

TINKER AIR FORCE BASE OKLAHOMA

Statement of Requirement / Item Description

3D Sand Printer

Sand Printer for Creation of Casting Molds, and it’s Associated Support Equipment P/N: ExOne S-Print, VoxelJet VX1000 or similar Salient Characteristics:

• Buildable volume of no less than 800mm x 500mm x 400mm.

• Shall have a layer height of no more than 500 µm.

• Shall use a phenolic or furan type binding system.

• Shall be able to have a magnesium inhibitor selectively applied during printing process.

• Media that is being printed must be capable of withstanding casting processes of light metals (i.e. aluminum and magnesium).

• Printer must be able to print silica media, ceramic bead media, and any mixture thereof.

• Printer must have the capability of storing enough printable material

(sand/ceramic and binder) to complete at least one job box.

• System must include software specific to the system for slicing STL files or converting STL, STEP, or IGES files to a sliceable format by the software.

• System must include software specific to part orientation and packing within the job box.

• System must include software or a subset of above listed software capable of transferring jobs from the slicing/packing computer to the integrated computer within the printer.

• System must include hardware capable of performing the computation and compiling of the above listed software (i.e. PC).

• Printer must include an embedded computer with available operator interface.

This computer must not rely on the external PC for performance of printing tasks

• The printing system shall include two job boxes.

• The system shall include a means of moving a job box that is full in a safe manner.

• The printing system shall include a powder reclamation system capable of sieving and separating reusable powder for future builds.

• The system shall include an unpacking station for removing the completed parts from the loose media bed.

• The system shall include a finishing station for fine removal of excess sand by pneumatic blast, sand blast, or other low pressure means.

• The system shall include all necessary cleaning supplies for normal operation.

• The post-processing system shall include means of collecting any dust generated in the finishing steps (i.e. unpacking, fine sand removal, material reclamation.)

• System must be uncrated, assembled, tested and initially operated by OEM personnel in order to prove initial machine operability, per Equipment section of this technical evaluation.

• OEM must provide, at a minimum, two days of specialized training from a qualified representative in order to familiarize MXDER personnel on standard operation, and to help ensure reliable performance and maximum service life.

• Upon expiration of the warranty, the OEM shall provide preventative maintenance. The maintenance shall be performed by OEM certified technicians using new or warrantied-as-new parts. PM will include labor, tools, parts, materials, equipment, transportation, travel, and all other incidentals. PM shall be performed a minimum of one time per year.