That is the question…


More specifically:
Why do we heat tools?

There are many benefits and applications to doing this.
Let’s look at several of them…

1. Shaping and forming:
Heating certain tools allows them to become more malleable,
making it easier to shape and mold materials. For example,
blacksmiths heat metal tools such as hammers, tongs, and anvils
to a high temperature in order to shape and forge metal.

2. Welding and soldering:
In welding and soldering processes, heat is applied to join or fuse
materials together. Heating tools like welding torches and soldering
irons provide the necessary heat to melt the filler material, allowing
it to flow and bond with the workpieces.

3. Hardening and tempering:
Some tools, particularly those made of metal, need to be heat-treated to
enhance their hardness, strength, and durability. Heat treatment processes
like hardening and tempering involve heating the tools to specific
temperatures and then cooling them at controlled rates. This alters the
internal structure of the tool, resulting in desired mechanical properties.

4. Removing or loosening materials:
Heat can be used to remove or loosen certain substances, such as adhesives,
glues, or rust. By applying heat to these materials, they can soften or expand,
making it easier to scrape, peel, or clean them off the surface using appropriate

5. Thermal expansion:
Heating tools can cause them to expand thermally. This property is utilized in
applications such as fitting components or fasteners. By heating the tool, it
expands, allowing it to be inserted into or around another part more easily.
Once cooled, the tool contracts, creating a tight and secure fit.


As we can see, there are several reasons for heating tools.

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