Metal Shop Safety
You must put this protective gear over your eyes before entering any active shop area.
Z87
In MIG welding (GMAW), the metal electrode is continuously fed from one of these inside the machine.
Wire Spool
Steel is created by adding a small percentage of this non-metal element to raw iron.
Carbon
Spinning an abrasive wheel at up to 10,000+ RPM, this handheld power tool is used to smooth welds, cut metal, and remove rust.
Angle Grinder
Because of thermal expansion in the summer heat, this famous iron tower in Paris grows in size.
Eiffel Tower
You should NEVER wear clothes made of synthetic materials (like polyester or nylon) while welding because sparks cause them to do this.
Melt/burn your skin
TIG welding (GTAW) gets its name from using a non-consumable electrode made of this dense metal.
Tungsten
Metals like iron, nickel, and cobalt that stick to magnets are classified by this term.
ferromagnetic?
This spring-loaded handheld tool is used to chip off hardened slag after completing a stick weld.
Chipping Hammer
The historical Bronze Age began when early humans figured out how to alloy soft copper with this other metal to make hard tools.
Tin
An electric welding arc produces high levels of this invisible light, which can cause severe skin sunburns and painful eye damage ("arc eye").
Ultraviolet (UV)
Stick welding (SMAW) leaves behind a brittle, glass-like crust on top of a fresh weld that must be chipped off called this.
Slag
Unlike standard steel, this lightweight non-ferrous metal will oxidize, but it will never form red rust.
Aluminum
Instead of using a pencil, metalworkers use this sharp-pointed steel tool to scratch layout lines directly onto metal stock.
Scribe/Scribing Tool
The Statue of Liberty has turned pale green over the decades because its outer metal skin is made of this element.
Copper
Welding on zinc-coated (galvanized) steel without proper ventilation releases toxic fumes that cause this temporary, flu-like illness.
Metal Fume Fever
The main purpose of using a shielding gas (like Argon or CO2) during welding is to protect the molten weld pool from this element.
Oxygen/Atmosphere Contamination
Stainless steel gains its impressive rust and corrosion resistance by containing at least 10.5% of this element.
Chromium
Mounted to a workbench, this tool uses two spinning wheels—typically an abrasive wheel and a wire wheel—to sharpen tools and clean parts.
Bench Grinder
At standard room temperature, this is the only metal on the periodic table that exists in liquid form.
Mercury
Compressed acetylene gas becomes dangerously unstable and explosive if set to a working pressure above this PSI.
15 PSI
To complete the electrical circuit required to strike a welding arc, this clamp must be attached directly to the metal workpiece.
Ground Clamp
The physical tendency of metal to expand when heated and shrink when cooled is known by this term.
Thermal Expansion
This thermal cutting process uses an electric arc mixed with compressed gas to create an ionized stream that melts cleanly through metal.
Plasma Cutter
Extremely malleable, a single ounce of this precious metal can be beaten into a thin sheet covering nearly 100 square feet.
Gold