Heat Loss Through the Tool in Friction stir welding

1 / 12

# Heat Loss Through the Tool in Friction stir welding - PowerPoint PPT Presentation

Heat Loss Through the Tool in Friction stir welding. Ashley Lavin Ken Ross. Downward force maintains pressure. Rotating tool creates friction and applies pressure. Direction of tool translation. Pin. How Friction Stir Welding (FSW) Works. Purpose.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'Heat Loss Through the Tool in Friction stir welding' - benjiro

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### Heat Loss Through the Tool in Friction stir welding

Ashley Lavin

Ken Ross

Downward force maintains pressure

Rotating tool creates friction and applies pressure

Direction of tool translation

Pin

How Friction Stir Welding (FSW)Works
Purpose
• Determine the effect of tool material on the heat lost during FSW through the tool
Materials
• Tools with identical geometries were made from the following materials. Shafts are painted black to create a constant emissivity for the tool surface
• Tungsten k = 84.02
• H-13 Tool Steel k= 28.6
• Nickel Alloy (ALGxN) k=11.8
Procedure
• Perform a weld using each of the tools at the same traverse and rotational speed and record the following
• Record temperature of the tool at the top and bottom of the shaft using ThermaCam
• Record power input into the weld
• Calculate the fraction of the total power lost to heat transfer through the tool using each material

Tool

ThermaCam

Workpiece

Setup
Analysis

T1

L

T2

• Nomenclature
• k= thermal conductivity W/mK
• L= Length (m)
• T= temperature (Celsius)
• RPM= rotation per minute
• M=Torque (Nm)
Results

Tungsten H-13 NLGxN

Qloss = 217.17 W 60.62 W 22.87W

Qloss/Qtotal 10.0% 3.24% 0.85%

Where Qloss/Qtotal is percent of the total heat input into the weld lost though the tool

Conclusion
• The ratio of heat lost through the tool correlates to the thermal conductivity of the tool material