Kings P440 SLS Industrial 3D Printer


Advanced Large Format Solutions from 3D Printer Gear



In SLS printing, a high-powered laser selectively melts and fuses powdered material (usually nylon) layer by layer according to a 3D digital model. This process enables the creation of complex and intricate plastic parts directly from digital designs.

The process begins with a thin layer of plastic powder spread over a build platform. Then, a laser beam scans the powdered layer, melting and fusing the particles together according to the cross-sectional shape of the desired object. Once a layer is completed, the build platform descends by the thickness of one layer, and the process repeats until the entire object is fabricated.

SLS printing offers several advantages, including the ability to produce highly complex geometries, rapid prototyping, and the manufacture of parts with high strength and durability. It's commonly used in industries such as aerospace, automotive, medical, and engineering for producing components with specific material properties and intricate designs.



  • The original revival technology of PA powder makes the powder
    utilization rate close to 100%, ensuring the high surface quality
    and great mechanical properties of the parts.
  • Through the optimization of the anti-oxidation of consumables,
    after the printing is completed, the cylinder can be taken to cool
    down, and at the same time, the printing operation of the next
    cylinder can be continued when the equipment is still at a high
    temperature, which can effectively reduce the cooling and warm-up
    time and reduce energy consumption.
  • Adopts an external powder cylinder to realize automatic powder
    feeding and powder replenishment at any time during printing.
  • The scraper can be easily adjusted in multiple axes. Two-way
    powder supply and powder spreading with double scrapers even
    the powder spreading, improves the stability of the temperature
    field and reduce the amount of powder spilled.


Ideal Applications


SLM printers can create models that are impossible to manufacture with standard manufacturing techniques. Models can be hollow or built with internal channels and components integrated into the design. SLM printing is commonly used in aerospace for reducing part counts and increasing reliability by creating a single part with coolant channels ducting and electrical components all integrated into one part.


  • Functional Prototyping 


Selective Laser Sintering (SLS) is highly advantageous for both functional prototyping and the fabrication of complex geometries. In functional prototyping, SLS offers the ability to create parts with high strength and durability, making it ideal for testing prototypes that need to withstand mechanical stress or have specific material properties. This is particularly valuable in industries such as aerospace and automotive, where functional testing is critical. Simultaneously, SLS excels in producing complex geometries with intricate internal structures. Its layer-by-layer additive manufacturing process enables the creation of parts with intricate details, such as lattice structures or nested components, without the need for support structures. This capability unlocks new design possibilities and allows for the fabrication of parts that would be challenging or impossible to produce with traditional manufacturing methods. Therefore, SLS is a preferred choice for applications that demand both functional performance and complex geometries, offering versatility and efficiency in the production of innovative components.



  • Batch Production


Cost-Effectiveness: SLS is highly cost-effective for batch production of parts, especially when compared to traditional manufacturing methods like injection molding. Many parts can be printed in one build volume allowing for hundreds of prints to be made.

No Tooling Required: Unlike traditional manufacturing methods that often require expensive tooling, SLS does not require any tooling or molds. This eliminates the need for upfront investments in tooling, which can be particularly advantageous for small-batch production runs where the cost of tooling may not be justifiable.

Design Flexibility: SLS offers unparalleled design freedom, allowing for the production of highly complex geometries and intricate details without the need for additional tooling or assembly. This means that each part in a batch can be customized or optimized for its specific function, enabling the production of highly tailored components.

Fast Turnaround Times: SLS has relatively fast turnaround times compared to traditional manufacturing methods, especially for small to medium-sized batches. Once the 3D model is prepared, multiple parts can be produced simultaneously in a single build cycle, reducing lead times and enabling rapid iteration and production.




Image Gallery


Below are examples of completed projects utilising SLM printers.


Technical Specifications


Optical System

laser 60W CO2laser
Spot size(mm) >0.28 (Variable spot)
Wavelength(um) 10.6
Laser lifetime center(h) >50000
Laser output power range 5%-100%

Scanning System

Scanning system 3 axis dynamic focusing
Deflection Angle +11°
Scanning speed(mm/s) 6500
Light on/off delay(us) 300-500
Signal type analog signal
Max gain drift(ppm/ 100
Max position drift(urad/ K) 30
Follow time(ms) <0.44

Maintenance parameters

Power supply 380V, 3~/N/PE, 50Hz peak 15Kw
Overall installation accuracy(mm) PE 0.04
Parallelism of the double edge of the scraper(mm) PE 0,02
Parallelism between scraper and construction platform(mm) PE 0.05
Build volume(mm) 440 (L) * 440 (W) * 450 (H)
Machine dimensions(mm) 1852 (L) * 1335 (W) * 2278 (H)
Weight(KG) 1980

Powder Delivery

Powder supply method Top feeding and bi-directional recoating
Powder collection method Falling powder cylinder
External cylinder volume(m³) 0.37


Laser cooling mode Water cooling.
Laser two switch Separate control to prevent misoperation
Feeding mode External powder supply cylinder, fully automatic feeding

Control System

Main control card Self-developed full-function control card LANRUI V2
Temperature control 8 zone independent temperature zone control
Way of temperature control Gold-plated twin tube heating, continuous temperature monitoring compensation
Molding precision +0.15mm (L<100mm); +0.2%*L(mm) 100mm)
Z-axis repeated positioning precision(mm) 0.01
Layer thickness(mm) 0.1-0.12
Powder laying method Bi-directional recoating
Forming bin environment Fully sealed pressurized nitrogen charging to ensure the stability of the processing environment
Ambient temperature requirement Ambient temperature 15 ~ 31 °C; Relative humidity >30%, and no condensation


Brand Kings
Shipping Weight 1.0000kg
Shipping Width 1.600m
Shipping Height 2.278m
Shipping Length 1.335m
Shipping Cubic 4.865808000m3
Unit Of Measure each

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