1. Product introduction


Metal binder jet 3D printing technology uses array-type inkjet printing nozzles. It selectively sprays binder on a metal powder bed based on two-dimensional graphics obtained by slicing a three-dimensional CAD model to solidify the bonding shape. Multi-layer superposition production completes the entire preliminary process. embryo parts. The curing principle can be varied, it can be purely physical bonding after the adhesive dries, or it can be chemical reaction curing of the adhesive. The preliminary metal parts are sintered at high temperature to form high-density and high-strength metal parts. As shown in the figure, the basic printing process is as follows:

 

Schematic diagram of metal adhesive jet printing

Workflow

 

 

Binder jet 3D printing technology was born for the printing application market of batch economical metal parts. It is unique compared with almost all other metal 3D printing processes because it does not produce a large amount of metal parts during the 3D printing process. heat, which enables high-speed printing and avoids residual stress issues during metal 3D printing. Due to its characteristics of high efficiency, fast speed, low equipment cost, and no need for additional support, it is generally regarded in the industry as a technology route that can truly enable large-scale mass production. It can enter socialized manufacturing and has a market potential of trillions of dollars. . This technology is changing the industry's preconceived understanding of this technology in an incredible way. "MIT Technology Review" rated this technology as one of the top ten breakthrough technologies in the world in 2018. It commented that its significance is that "it can quickly and cost-effectively manufacture large-scale Metal objects may bring disruptive changes to the manufacturing industry."


2. Product performance parameters


project

Parameter index

 

 

 

 

Print parameters

Forming cylinder size (mm)

400×250×200mm

Printing speed

About 10 seconds/layer

Printing accuracy

±0.1mm (L≤100mm) or 0.1% (L>100mm)

Ink volume

0-100% high precision adjustment

resolution

1200DPI

Molding layer thickness

0.03-0.1mm adjustable

 

 

nozzle

Number of nozzles

1 piece standard

Nozzle specifications

Piezoelectric imported nozzle, length: 120mm, physical resolution 600DPI, printing resolution 1200DPI

Service life

≥10000h

Nozzle moisturizing

Automatic (needs to be cleaned and maintained after being idle for a long time)

 

 

Ink supply system

Ink supply method

automatic

Nozzle cleaning

automatic

Nozzle press ink

automatic

Ink path cleaning

automatic

Scan system

X/Y axis

Repeat positioning accuracy ≤0.001mm

Z axis

Repeat positioning accuracy ≤0.01mm

 

 

 

Powder spreading system

Powder delivery method

Falling powder

 

 

Powder spreading method

The powder spreading device adopts a two-stage knife-roller mode. The powder is first smoothed with a scraper, and then compacted using a powder spreading roller. It is compatible with all types of powders. At the same time, the powder spreading roller adopts a new sealing device. The entire powder spreading process does not raise dust, is safe and environmentally friendly, and can meet the needs of dust-free production with higher requirements.

 

 

 

control system

 

 

 

layered software

Support STL, 3MF, WRL, EasyCreate format files

Online slicing and RIP data processing during printing

autolayout

Variable layer thickness

fault-tolerant slicing

Layer preview

Grayscale variable technology

Online, real-time RIP generation of print data during manufacturing

Model information automatic saving technology


Print control software

Array nozzle integrated control

(Integrated control of the array nozzle, using network cable and optical fiber transmission, fast data transmission speed, strong anti-interference)

Adaptive nozzle hole blocking inkjet printing method

Penetration ink volume adjustment technology at the bottom of the printed model

Intelligent control of array nozzle ink path pressure

Array nozzle multi-pass/one pass printing technology

Array nozzle cleaning technology

Array nozzle calibration technology

Array nozzle feather printing technology

Array nozzle intelligent moisturizing technology

Intelligent image analysis, automatic white skip printing technology

Inter-layer continuation technology

Real-time dot counting and ink consumption display technology

Ink volume real-time 0-100% adjustment technology

Variable print speed technology

bidirectional printing technology

Control system intelligent early warning technology


operating system

Windows 10

computer

Mainstream industrial control computers

molding material

Adhesive type

Special water-based environmentally friendly anti-clogging ink

metal powder

Iron-based alloys, high-temperature alloys, titanium alloys, etc.

power

***Power

1KW

Printing power

0.6KW

Special treatment to prevent sparks

Target part: printing system

Spray isolation resin on line joints

 

 3. Configuration list


serial number

name

unit

quantity

Remark

1

Long barrel filter and butterfly filter

indivual

4

Standard configuration

2

ink tube

rice

5

Standard configuration

4

Photoelectric switch

indivual

2

Standard configuration

5

Dust-free cloth

Bag

1

Standard configuration

6

syringe

indivual

2

Standard configuration

7

Moisturizing cleanser

Lift

1

Standard configuration

8

Silicone scraper

piece

10

Standard configuration

9

Vacuum curing box

  set

1

Optional

10

Vacuum curing box

  tower

1

Optional

11

 Vacuum sintering furnace

  tower

1

Optional

 

4. Application examples

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