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The WELD-3D Application

Automated Welding Procedure Development 

View the WELD-3D Control Panel

WELD-3D is a general purpose application for computing optimal weld procedures where 3 dimensional (3D) heat flow predominates. The user specifies the required weld pool dimension and WELD-3D calculates all power and travel speed combinations (a procedure) that will produce the weld in the chosen metal or alloy.

The model is based on the Rosenthal moving point source solution to the conduction heat flow equation. It is applicable to any fusion welding process where the heat source is moving and melting of the base metal occurs.


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WELD-3D can be used for gas tungsten arc welding, plasma arc welding, oxy acetylene welding, laser welding, and other fusion welding processes when filler metal is not deposited. WELD-3D calculates weld dimensions, parameter values, and several quality parameters including melting efficiency, temperature sensitivity, and power sensitivity .

WELD-3D will automatically recommend a weld procedure to minimize heat input. The user can also use the mouse to query the model for other parameter combinations and process variables.

WELD-3D currently can be used for 19 metals and alloys: 304, 15-5PH, and17-4PH stainless steels, 1018, HY80, and HY130 steels, Hastelloy C4, C22, and B2, Kovar, 1100 and 6061 Aluminum, Ti-6Al-4V, Inconel 625, and 718, Nickel 200, 110 Copper, Tin, and Molybdenum.

To display the resulting temperature contours, the chosen procedure is easily input directly into ISO-3D for additional analysis.

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