Robot Welding Trawl Doors

trawl Doors_3Project period: 01.01.2014 – 31.05.2014


Gurskøy AS – Suppliers of welded products for the maritime sector and specialized in robotic welding.


The purpose of this project was to explore the potential of robotic welding and document its benefits through simulation.

For this simulation, a trawl-door was chosen as “test-product”. This is a product with a long history and the production methods have stood still for the last decades, thus holds a lot of room for potential improvement. The construction consists of several plates and stiffeners can be considered relatively complex in terms of welding. The goal was to show that an introduction of robotic welding can cut a great amount in production-time and –costs, and effectively the price. The latter is crucial for attracting customers in a tight market.

A 3D model of a typical trawl-door was modeled in Siemens NX and placed in the simulation program DELMIA from Dassault Systèmes which was used to simulate the welding process. An identical 3D-assembly of the robot cell at Gurskøy AS was provided for the project. For training in using the DELMIA software, guidance was given by Dr. Henrik Kihlman from Chalmers University of Technology.


Results from simulation:

Total welding length on trawl-door [mm] Manual welding time Robotic welding time Total welded length by robot [%]
5250 02:30:00 00:23:00 89.5


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