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Metal Additive Manufacturing

SLM 280 2.0

Manufacturer : SLM Solutions
Sectors : Aerospace, Automotive, Industry, Medical, Railway

The op­ti­mal ap­proach for re­li­able metal part pro­duc­tion and pro­to­types. Flex­i­ble, safe and ef­fi­cient. Up to 80% higher build-up rate.

Reference : c37e46633d4f
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The Se­lec­tive Laser Melt­ing Ma­chine SLM 280 2.0 pro­vides a 280 x 280 x 365 mm³ build en­ve­lope and a patented multi-beam tech­nol­ogy.

Dur­ing the build process up to two fiber lasers ex­pose the build field via a 3D scan optic. The SLM 280 2.0 is avail­able in sev­eral con­fig­u­ra­tions, pro­vid­ing sin­gle op­tics (1x 400W or 1x 700W), dual op­tics (1x 700W and 1x 1000W) and twin op­tics (2x 400W or 2x 700W). De­pend­ing on how the com­po­nents are arranged, a 80% higher build rate can be achieved. In ad­di­tion, the patented bidi­rec­tional pow­der coat­ing helps to re­duce the man­u­fac­tur­ing time of in­di­vid­u­ally man­u­fac­tured metal build parts. Thus, the Se­lec­tive Laser Melt­ing Ma­chine SLM 280 2.0 en­ables the man­u­fac­ture of in­di­vid­ual metal com­po­nents based on CAD data for se­ries pro­duc­tion and one-off pro­duc­tion with in­di­vid­ual pa­ra­me­ters.

There is room for clean­ing equip­ment in a com­part­ment in the left side wall of the process cham­ber so that, after a pro­duc­tion process, the build parts can be cleaned of pow­der while still in an inert gas at­mos­phere.

The SLM 280 2.0 as an open sys­tem of­fers many op­tions for op­ti­miz­ing the pro­duc­tion processes as re­quired with in­di­vid­u­ally set process pa­ra­me­ters and for car­ry­ing out ma­te­r­ial de­vel­op­ments.

An ex­ten­sive mon­i­tor­ing sys­tem that has been de­vel­oped specif­i­cally for the SLM process en­ables a high level of process con­trol and, as a re­sult, a high level of qual­ity for the build parts.

The use of a large pow­der tank (40l) with two bot­tles (each 5l) en­ables the ex­e­cu­tion of a com­plete pro­duc­tion process in full height with a 1.6-way over­dose. The size of the over­flows has also been mod­i­fied ac­cord­ingly and to en­able sim­ple han­dling, the pow­der bot­tles of the over­flows are eas­ily ac­ces­si­ble from out­side.

The com­plete process is car­ried out in an inert gas at­mos­phere. With ef­fi­cient inert gas cir­cu­la­tion, a re­duced gas con­sump­tion is achieved in a se­cure and ef­fi­cient op­er­a­tion. A new inert gas flow is used for op­ti­mum process con­di­tions, whereby an ef­fi­cient re­moval of flue gas from the process cham­ber is achieved. In ad­di­tion to the at­tain­ment of con­stant con­di­tions on the work sur­face, the beam entry glasses are also ef­fec­tively pro­tected from con­t­a­m­i­na­tion.

Op­tion­ally, a mod­u­lar pow­der sup­ply unit (PSV) can be con­nected to the ma­chine to en­sure a re­li­able pow­der sup­ply to the SLM 280 2.0 through­out the en­tire pro­duc­tion process.
The PSV uses a 90-liter pow­der tank which is suf­fi­cient for any pro­duc­tion process. Man­ual fill­ing of pow­der via in­di­vid­ual pow­der bot­tles is not nec­es­sary. An ul­tra­sonic sieve, which is in­te­grated in the PSV, sieves the avail­able pow­der just be­fore it is fed into the process so that no over­sized par­ti­cles or for­eign ob­jects can find their way into the SLM process. The trans­port of pow­der be­tween the PSV and the SLM ma­chine is fully au­to­matic and car­ried out via vac­uum tech­nol­ogy.
The PSV uses three in­de­pen­dent con­vey­ing routes. In ad­di­tion to sup­ply­ing the freshly sieved metal pow­der to the SLM ma­chine, a sec­ond con­vey­ing route re­turns the ex­cess metal pow­der from the over­flows back to the PSV. The third con­vey­ing route uses a man­ual suc­tion de­vice to re­move the ex­cess metal pow­der from the process cham­ber which is then con­veyed di­rectly back to the PSV. Dur­ing this step, a new pro­duc­tion process can al­ready be started using the SLM ma­chine whereat the pow­der sup­ply to the SLM ma­chine is then pri­or­i­tized. Fresh pow­der is ei­ther sup­plied through the di­rect con­nec­tion of pow­der con­tain­ers to the pow­der tank from the PSV or through the emp­ty­ing of the pow­der con­tainer in the process cham­ber via a suc­tion de­vice.
Pow­der trans­port, pow­der siev­ing and the stor­age of the pow­der take place in a closed sys­tem with inert gas at­mos­phere. Con­tact­less pow­der han­dling en­sures max­i­mum safety at work.


Sys­tem con­fig­u­ra­tion for all types of metal pow­ders / Tech­ni­cal changes re­served
Build En­ve­lope (L x W x H) 280 x 280 x 365 mm³ re­duced by sub­strate plate thick­ness
3D Op­tics Con­fig­u­ra­tion, 
Dual Con­fig­u­ra­tion: 
with switch­ing unit Sin­gle (1x 400 W), Twin (2x 400 W), Sin­gle (1x 700 W), Twin (2x 700 W), Dual (1x 700 W and 1x 1000 W) IPG fiber laser
Build Rate up to 55 cm³/h
Vari­able Layer Thick­ness 20 µm – 75 µm
Min. Fea­ture Size 150 µm
Beam Focus Di­am­e­ter 80 – 115 µm
Max. Scan Speed 10 m/s
Av­er­age Inert Gas Con­sump­tion in Process 2,5 l/min (argon)
Av­er­age Inert Gas Con­sump­tion Purg­ing 70 l /min (argon)
E-Con­nec­tion / Power Input 400 Volt 3NPE, 63 A, 50/60 Hz, 3,5 – 5,5 kW
Com­pressed Air Re­quire­ment / Con­sump­tion ISO 8573-1:2010 [1:4:1], 50 l/min @ 6 bar
Di­men­sions (L x W x H) 2600 mm x 1200 mm x 2700 mm
Weight (with­out / incl. pow­der) ap­prox. 1300 kg / ap­prox. 1800 kg


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SLM Solutions

SLM Solutions develops additive manufacturing metal solutions with application in R&D and production. The German society, SLM solutions, located in Lübeck (one hour from Hamburg), has been specialized in additive manufacturing technologies for many years. SLM Solutions develops additive manufacturing metal solutions which are polyvalent and flexible. SLM Solutions systems…

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