CUSTOM ONLINE 3D PRINTING SERVICE

Selective Laser Melting (SLM) / Direct Metal Laser Sintering (DMLS)3D Printing Service

Robust, industrial-grade metal parts shipped in 4-5 days with an extensive selection of metal alloys.

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Overview: How SLM 3D Printing Works?

The Basics of SLM 3D Printing:

The SLM (Selective Laser Melting), also commonly referred to as DMLS or DLML, is a type of metal additive manufacturing or 3D printing. Often, the terms SLM and Direct Metal Laser Sintering (DMLS) are used interchangeably. SLM produces strong, dense metal parts and helps you get to market faster with shorter turnaround times.

Overview diagram of how SLM 3D printing works

Why Choose SLM 3D Printing With Unionfab

(Stainless Steel, Aluminum Alloy, Maraging steel, Titanium Alloy, Nickel-base Alloy, Copper Alloy) in the market and has rich post-treatment processes (Polishing, Anodizing, Electroplating, Electroless plating, Heat Treatment, Painting, secondary machining, etc.).
Unionfab has four joint factories in South China and East China to cope with the changing market and social situation, with more than 200 imported and domestic printing equipment to meet various samples and batch orders.
we print SLM at a maximum size of 450mm and a minimum wall thickness of 0.3mm, meeting the printing accuracy of ±0.1mm, machining tolerances up to ±0.02 mm depending on geometry, and the sample order with the fastest delivery time of 3-4 days.
Conduct 100% full appearance inspection for all products and 2.5% critical dimension inspection for AQL. Provide standard inspection reports, support customers’ online quality inspection before shipment, and control the production and inspection of products throughout the process.
Many experienced engineers with solid process capability can assist customers in pre-sales technical support of multi-process and undertake product-level services and orders.

Features of SLM 3D Printing

High Complexity

Difficult to machine parts, custom medical pieces, hollowed or lightweight parts, and artistic pieces fall in this category.

Rapid or Continuous Revisions

Product development efforts and iterative designs are well-suited to SLM because there are no setup costs as in traditional manufacturing.

Internal Stresses

Because SLM is a higher temperature process, its printed parts often end up with internal stresses.

Expensive

SLM machines are designed for high-volume industrial use, so they are expensive.

SLM Design Guidelines

	US	Metric
Max Size	15.75in. x 11.81in. x 15.75in.	400mm x 300mm x 400mm
Min Size	5.91in. x 5.91in. x 7.87in.	150mm x 150mm x 200mm

Note: These design guidelines are for general reference only. Actual manufacturability may vary depending on specific part geometry and material.

SLM Available Materials

Aluminum (AlSi10Mg)

Aluminum (AlSi10Mg) is an SLM metal material designed for heat resistance, weather resistance, a lightweight design, and conductivity. It is suitable for assembly and fit checks, functional prototype testing, and end-use metal parts, with selection based on the part geometry, load case, and finishing requirements.

Process:: SLM
Maximum Size:: 400 × 300 × 400 mm
Colors:: Silvery-gray

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Available Finishes

Default:

In addition to the removal of support structures, the part surface is media blasted to provide a uniform finish.

Other:

Anodizing
Painting
Polishing
Electroplating
Electroless plating
Passivation
Phosphorization
Blackening
Heat Treatment

* Want to custom the finish you need? Request in the quoting tool, we'll evaluate your finishes on a case-by-case basis.

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SLM 3D Printing Applications

Aerospace & Lightweight Components

Produce lightweight brackets, ducts, manifolds, and other complex metal components with optimized internal structures and reduced part count.

Conformal Cooling & Industrial Tooling

Manufacture mold inserts, tooling, and fixtures with conformal cooling channels that are difficult to produce using conventional machining.

Complex Fluid & Thermal Components

Create impellers, heat exchangers, manifolds, and fluid-control components featuring complex internal channels and consolidated geometries.

Medical Device Components

Produce customized prototypes, surgical instruments, and non-implantable medical device components using suitable metal alloys. Regulated applications are subject to applicable material, quality, and certification requirements.

The Production Capacity of Unionfab

Production Machines

Process	Name	Numbers	Process Size(mm)
SLM	BLT:A320/A300/T300	5	250250295
	Farsoon:FS273M	11	270270300
	UnionTech:430L	8	430340380
	HB:P400/400T	18	355405400

Post-Process Machines

Process	Name	Numbers	Process Size(mm)
Sand-blasting	Sand blasting machine	2	400800500
Anodized	Anodizing equipment	2	8002000500
Polish	Chemical polishing line	2	6001200400
Polish	Magnetic polishing machine	2	606060
Painting	Painting Line	2	100020001000
Electroplating	Electroplating line	2	6001800500