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Optimering av Tandem MIG/MAG och Laser Hybrid svetsning
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2007 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Optimizing Tandem MIG/MAG and Laser Hybrid welding (English)
Abstract [sv]

Optimering av olika fogberedningsvinklar

för svetsprocessen Tandem

MIG/MAG var målet för detta

examensarbete. Frågan var om

processen tillät en minskad

fogberedning med likvärdig kvalitet.

Svetsförsök utfördes på olika material

med olika fogberedningar. Parametrar

ändrades och optimerades för olika

kombinationer av material och

fogberedningsvinklar. De olika

materialen reagerade inte på samma sätt

gällande minskad fogberedning. Små

diskontinuiteter och olikheter i

fogberedningen hade större effekt på

kvalitet och stabilitet när

fogberedningsvinkeln minskades. Olika

bågtyper och kombinationer av dessa

har utvärderats. En summering av

resultat för olika fogberedningar och

material visas i Tabell 1.

Ekonomiska analyser samt beräkningar

har genomförts för att utvärdera

kostnadsfördelningen för olika fall. Två

fogberedningsmetoder har utvärderats,

fräsning och vattenskärning. Fräsning

hade fördelar vid stora serier och

vattenskärning var mer kostnadseffektiv

vid små serier. För 10 mm

materialtjocklek påverkades inte

fräshastigheten av minskad

fogberedningsvinkel. Skärhastigheten

för vattenskärning kunde ökas med

minskad fogberedningsvikel.

Utvärderingar av försök visade att

tandem MIG/MAG kunde öka

produktiviteten och minska

kostnaderna. Svetsförsök med laser

hybrid kunde inte utföras inom

tidsramen för detta examensarbete.

Fall Material Fogberedning

(V-fog)

Uppnådd

svetsklass

Lyckad/

Möjlig

D1 Domex 700 MC 6° + 6° WB Ja/Ja

D2 Domex 700 MC 15° + 15° WB Ja/Ja

S1 Aluminium 6082 6° + 6° - Nej/Nej

S2 Aluminium 6082 15° + 15° - Nej/Ja

S3 Aluminium 6082 30° + 30° WB Ja/Ja

R1 Rostfritt 2205 6° + 6° - Nej/Ja

R2 Rostfritt 2205 20° + 20° WB Ja/Ja

Tabell 1: Summering av uppnådda

svetsklasser för olika fogberedningar och

material

Abstract [en]

Optimization of different joint

preparation angles for the welding

processes Tandem MIG/MAG was the

goal for this thesis. The question was if

the processes allowed a decreased joint

preparation with maintained quality.

Welding trials were performed for

different materials with different joint

preparation. Parameters were changed

and optimized for different

combinations of material and joint

preparation angle.

The different materials did not have the

same reaction to a decreased joint

preparation. Small distortions in joint

preparation angle had larger effect on

quality and stability when the joint

preparation angle was decreased.

Different arc types and combinations

have been evaluated. A summary of

results for different joint preparations

and materials are presented in Table 2.

Economical studies and calculations

were made to evaluate the cost

distribution for different cases. Two

joint preparation methods were

evaluated, milling and water jet. Milling

showed advantages for large series and

water jet for smaller. For 10 mm

material thickness milling speed was

not affected by decreased joint

preparation angle. The cutting speed for

water jet could be increased with

decreased joint preparation angle.

Evaluating results and trials have shown

that Tandem MIG/MAG could raise

productivity and decrease costs.

Welding trials with laser hybrid could

not be performed within the time frame

of this thesis.

Case Material Joint preparation

(V-joint)

Achieved

welding class

Successful/

possible

D1 Domex 700 MC 6° + 6° WB Yes/Yes

D2 Domex 700 MC 15° + 15° WB Yes/Yes

S1 Aluminium 6082 6° + 6° - No/No

S2 Aluminium 6082 15° + 15° - No/Yes

S3 Aluminium 6082 30° + 30° WB Yes/Yes

R1 Stainless 2205 6° + 6° - No/Yes

R2 Stainless 2205 20° + 20° WB Yes/Yes

Table 2: Summary of reached weld quality

for different joint preparation and material

Place, publisher, year, edition, pages
2007.
Series
MMK 2007:9 MME 791
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-100721OAI: oai:DiVA.org:kth-100721DiVA: diva2:544704
External cooperation
KIMAB,Joakim Hedegård
Uppsok
Technology
Supervisors
Examiners
Available from: 2012-08-15 Created: 2012-08-15 Last updated: 2012-08-15Bibliographically approved

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