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What is Binder Jetting

Binder Jetting is a 3d printing method where an industrial printhead selectively sprays a liquid binder onto a layer of powdered material, bonding it layer by layer to form a solid object. The materials used can include sand, composites, metals, or ceramics. This technique resembles how an inkjet printer works and is often used to produce high-value components and tools. Binder Jetting has a range of applications. It is used to create full-color prototypes like figurines, produce large sand casting cores and molds, and manufacture affordable 3D-printed metal parts.

How Does Binder Jetting Work

When To start the printing process, the object needs to be designed using CAD software and then exported to a slicer, which converts the design into G-Code instructions for the printer. Printing begins by lowering the build plate and spreading the first layer of powder with a rolling cylinder.

An inkjet print head sprays a binder in 80 µm droplets to solidify the powder. As the build plate lowers further, additional layers of powder are spread and bound, gradually forming the object layer by layer. This technique also allows for the creation of colored models by using binders in different colors, similar to how an inkjet printer works.

Application of Binder Jetting

Binder jetting 3D printing is ideal for a wide range of applications across various industries, including automotive, aerospace, art and design, and architecture.

Binder Jetting is highly effective for manufacturing small metal parts, including industrial components, filters, jewelry, golf club heads, copper windings, shift knobs, and automotive engine parts. It is also commonly used to create tooling for injection and blow molding processes.

For ceramic materials, Binder Jetting simplifies the production of functional parts such as silicon carbide nuclear fuel structures, tungsten carbide wear components, nozzles, and spare parts. Additionally, some companies utilize this technology to produce molds for rapid metal casting.

In the context of sand, Binder Jetting is extensively employed to create foundry tooling for both prototyping and casting parts. Infiltrated sand is also used in vacuum and thermoform tooling, as well as in the production of end-use items like skate ramps and personal protective equipment (PPE).

Binder Jetting 3D printing for the aerospace
Binder Jetting 3D printing for the aerospace industry
Binder Jetting

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