Page 184 - Fundamental Of Design In Mechanical Engineering
P. 184
Binder Jetting
◦ This technique uses a 3d printing style head moving on x, y and z axes to
deposit alternating layers of powdered material and a liquid binder as
an adhesive.
◦ The materials commonly used in Binder Jetting are metals, sand, and
ceramics that come in a granular form.
◦ The typical layer height depends on the material: for full color models
the typical layer height is 100 microns, for metal parts 50 microns and for
sand casting mold materials 200-400 microns.
◦ A key advantage of Binder Jetting over other 3D printing processes is
that bonding occurs at room temperature. This means that dimensional
distortions connected to thermal effects (such as warping
in FDM, SLS, DMSL/SLM or curling in SLA/DLP) are not a problem in Binder
Jetting.
◦ Binder Jetting is used in various applications, including the fabrication
of full-color prototypes (such as figurines), the production of large sand-
casting cores and molds and the manufacture of low-cost 3D printed
metal parts.
184
