Binder Jetting: Difference between revisions

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==Process description==
==Process description==
Binder jetting's process is very similar to that of powder bed fusion. it involves placing down a layer of a powder material onto the whole print bed, but instead of melting the powder together with a heat source a print head deposits a liquid binder the sections of the layer that will be in the final part. after the process is complete the part is normally left in the powder bed to let the binder fully cure, and is then cleaned of excess powder.
The Binder Jetting process is very similar to that of powder bed fusion, except it uses a chemical binder to bond material together instead of melting the material together. In this process, a layer of a powder material is placed onto the whole print bed, a liquid binder is placed on the needed material, and then another layer of powder is layered on top. After the process is complete, the part is left in the powder bed to let the binder fully cure and then cleaned of excess powder.  


==strengths==
==Strengths & Weaknesses==
 
Strengths
* low energy: since it requires no melting of materials binder jetting is a very low energy printing technique  
* '''Low energy''': Since it requires no melting, this is a very low energy printing technique when compared to other methods.
* material flexibility: binder jetting can be printed with any powder material that can be held together with a liquid binder
* '''Material flexibility''': Binder jetting has a large number of available materials.
* scalable: because the print heads needs to deliver very little binder in relation to the volume of the final part
* '''Scalable''': The print head delivers very little binder in relation to the volume of the final part, enabling the production of a large variety of sized parts.
* no need for supports: very similar to powder bed fusion the excess powder acts as natural supports  
* '''No need for supports''': Similar to powder bed fusion, the excess powder acts as natural supports.
 
Weaknesses
==weaknesses==
*'''Material properties''': Binder jetting parts tend to be weaker then other AM types.
* '''Surface finish''': The surface finish is entirely dependent on the powder material used, and has a wide range of finishes.
* '''Post processing''': To improve the material properties, extensive post processing is sometimes needed. This can involve injecting extra binder, more cure time, or metal sintering.
{| class="wikitable"
!
!Low
! High
|-
|Volume X/Y/Z (mm)
|254/381/203
|800/500/400
|-
|Resolution (mm)
|.5
|.03
|-
|Layer Height (um)
|80
|100
|-
|Price ($)
|Requires
|Quotes
|-
|Weight (kg)
|340
|3700
|-
|Build Rate (cm^3/hr)
|1817
|5058
|}
==Technologies==
There are a few terms and technologies to be aware of when looking at Binder Jetting machines.


* material properties: straight out of the printer binder jetting parts tend to be weaker then other am types
* '''Multi color printing:''' Combining a neutral color powder with a colored binder makes this one of the easiest technologies to create multi color printers for.
* surface finish: the surface finish is entirely dependent on the powder material used
* '''Metal sintering:''' A temporary binder can be used to hold metal powder together until it can be sintered in a furnace. This allows binder jetting printers to create metal parts, but requires heavy post processing and it may be difficult to get dimensional accuracy due to shrinking during the sintering process.
* post processing: in order to increase the material properties extensive post processing is sometimes needed such as injecting extra binder, more cure time, or metal sintering.


==Technologies==
==Navigation==
There are a number of specific technologies that can vastly change to capabilities of a printer.
*[https://omic-am.mme.pdx.edu/index.php/Main_Page?veaction=edit Home page]
*[[Material extrusion|Material Extrusion]]
*[[Powder Bed Fusion]]
*[[Vat Polymerization]]
*[[Direct Energy Deposition]]
*[[Binder Jetting]]
*[[Material Jetting]]
*[[Sheet Lamination]]
==References==
Rosen, Stucker, and Khorasani, Additive Manufacturing Technologies, chap. 8.


* '''multi color printing''' using a powder of a neutral color allows the binder to both fuse and dye the colors of prints. this makes binder jetting one of the easiest technologies to create multi color printers for.  
“Binder Jetting - BJ | Make.” Accessed October 6, 2023. <nowiki>https://make.3dexperience.3ds.com/processes/binder-jetting</nowiki>.
* '''metal sintering:''' using a temporary binder to hold metal powder together for a further sintering to fuse the powder. this allows binder jetting printers to create metal parts, but this requires heavy post processing and parts must be printed at a larger scale to account for shrinking

Latest revision as of 12:44, 24 October 2023

Process description

The Binder Jetting process is very similar to that of powder bed fusion, except it uses a chemical binder to bond material together instead of melting the material together. In this process, a layer of a powder material is placed onto the whole print bed, a liquid binder is placed on the needed material, and then another layer of powder is layered on top. After the process is complete, the part is left in the powder bed to let the binder fully cure and then cleaned of excess powder.

Strengths & Weaknesses

Strengths

  • Low energy: Since it requires no melting, this is a very low energy printing technique when compared to other methods.
  • Material flexibility: Binder jetting has a large number of available materials.
  • Scalable: The print head delivers very little binder in relation to the volume of the final part, enabling the production of a large variety of sized parts.
  • No need for supports: Similar to powder bed fusion, the excess powder acts as natural supports.

Weaknesses

  • Material properties: Binder jetting parts tend to be weaker then other AM types.
  • Surface finish: The surface finish is entirely dependent on the powder material used, and has a wide range of finishes.
  • Post processing: To improve the material properties, extensive post processing is sometimes needed. This can involve injecting extra binder, more cure time, or metal sintering.
Low High
Volume X/Y/Z (mm) 254/381/203 800/500/400
Resolution (mm) .5 .03
Layer Height (um) 80 100
Price ($) Requires Quotes
Weight (kg) 340 3700
Build Rate (cm^3/hr) 1817 5058

Technologies

There are a few terms and technologies to be aware of when looking at Binder Jetting machines.

  • Multi color printing: Combining a neutral color powder with a colored binder makes this one of the easiest technologies to create multi color printers for.
  • Metal sintering: A temporary binder can be used to hold metal powder together until it can be sintered in a furnace. This allows binder jetting printers to create metal parts, but requires heavy post processing and it may be difficult to get dimensional accuracy due to shrinking during the sintering process.

Navigation

References

Rosen, Stucker, and Khorasani, Additive Manufacturing Technologies, chap. 8.

“Binder Jetting - BJ | Make.” Accessed October 6, 2023. https://make.3dexperience.3ds.com/processes/binder-jetting.

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