Control of shaping of welds for CO2 laser welding shipbuilding T-section aluminum alloy - Details

Author：

Qi, Junfeng (Qi, Junfeng.) | Niu, Zhen (Niu, Zhen.) | Zhang, Dongyun (Zhang, Dongyun.) (Scholars：张冬云) | Zuo, Tiechuan (Zuo, Tiechuan.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

Characteristics　of　shipbuilding　T-section　aluminum　alloy　have　been　analyzed.　The　method　of　laser　welding　shipbuilding　T-section　aluminum　alloy　has　been　put　forward.　Fillet　welds　of　6.0　mm　thick　5083　aluminum　alloy　T-joints　have　been　completed　through　laser　beam　welding　with　wire　filler　material.　Based　on　plate　welding,　the　influences　of　laser　beam　incident　angle,　working　position　and　relationship　between　welding　speed　and　wire　feeding　speed　on　shaping　of　welds　have　been　studied.　On　the　condition　of　3300-3500W　laser　power,　0　mm　defocusing　length,　Ar　and　He　blending　shield　gas,　22°-25°　laser　incident　angle,　0.8-1.0　mm　from　laser　working　position　to　the　cross　plate,　2.2-2.5　m/min　welding　speed　and　2.5-2.8　m/min　wire　feeding　speed,　satisfied　weld　shape　can　be　achieved.　The　reasons　of　porosities　production　and　process　instability　in　CO2　laser　welding　shipbuilding　T-section　aluminum　alloy　are　also　discussed.

Keyword：

Carbon dioxide lasers Laser beam welding Shipbuilding Aluminum alloys Welds

Author Community：

[ 1 ] [Qi, Junfeng]College of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Niu, Zhen]College of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Zhang, Dongyun]College of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Zuo, Tiechuan]College of Laser Engineering, Beijing University of Technology, Beijing 100022, China