HP Multi Jet Fusion (MJF) Technology

As the digitization progresses, the additive manufacturing begins to play an increasingly important role in the broadly defined industrial sector. In many industries, innovative 3D printing technologies are replacing the traditional manufacturing methods used for years. The considerable saving of time, money, and workload make 3D printing an attractive alternative for conscious entrepreneurs. The additive techniques significantly improve the existing production processes by enabling the manufacturing of durable and versatile objects with almost unlimited application potential.

Like the SLS (Selective Laser Sintering) technology, the MJF technology is one of the most popular and versatile 3D printing techniques. HP Multi Jet Fusion offers extremely accurate 3D manufacturing with plastics. What is the MJF additive technology? What is it used for?

What is Multi Jet Fusion (MJF) 3D printing?

Multi Jet Fusion is an HP’s patented, advanced technology of additive manufacturing used by the most modern models of HP 3D printers. When developing the technology, HP considered the disadvantages of the techniques used so far and thus introduced a real innovation in the 3D printing industry. The main advantages of the Multi Jet Fusion technology are above-average precision and efficiency, as well as excellent repeatability and flexibility of the 3D printing process.

The MJF manufacturing process consists in bonding plastic powders layer by layer using printing heads and a movable hotend. The operation is repeated until an element is made. Due to their uniform internal structure, the manufactured objects are durable and highly resistant to mechanical damage.

Materials used in MJF

During the several years of the technology’s existence on the market, the selection of available production materials has significantly increased, and new building materials are being developed. The most commonly used building materials in the MJF additive technology are PA 11 and PA 12 polyamides and TPU elastomers.

Due to the use of flexible materials with excellent technical properties, the production time significantly reduces, and the high-precision objects with a smooth surface finish and good mechanical integrity can be obtained.

Applications of MJF 3D printing

3D printing with plastics and metals is widely used in different industrial sectors. At present, HP Multi Jet Fusion technology is the most widely used additive printing method in the automotive industry. Elements and tools manufactured reduce production costs and increase operating performance. The undoubted benefits of the use of MJF are also obvious in the healthcare and therapeutic industries, e.g., in the manufacturing of customized prostheses and dental forms.

MJF is perfect for, among other things, small series production as well as shape prototyping and quality tests. Due to its versatility, the MJF technology can be used for manufacturing smooth-surface objects of advanced shape with high measurement accuracy.

Advantages of HP Multi Jet Fusion additive technology

The HP Multi Jet Fusion additive manufacturing technology has a wide range of advantages and is free from many disadvantages found in other technologies. The main advantages include high precision, lower surface roughness, and accurate geometric features of the manufactured objects.

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