Welding

What is welding?

Welding is the process of joining metals by melting the base materials and (often) a filler to form a fused, high-strength joint as it cools. Common processes include MIG/GMAW (wire feed with shielding gas), TIG/GTAW (tungsten electrode with precise heat control), and Stick/SMAW (flux-coated electrodes). Safe welding requires the right PPE—helmet or goggles with the correct shade, gloves matched to the process, flame-resistant clothing, and, when ventilation is limited, respiratory protection.

What welding safety gear do I need for MIG, TIG, and stick welding?

At minimum, every process requires eye and face protection (helmet or approved goggles), hand protection (heat- and cut-resistant gloves), flame-resistant clothing, and—when applicable—respiratory protection. Many shops also add cutting and gas-handling welding equipment such as torches, regulators, and hose kits.

• Welding helmets with appropriate lens shade
• Welding filters (passive or auto-darkening plates) matched to the process current
• Welding glasses / safety goggles for grinding and prep, and for oxy-fuel
• Welding gloves sized for dexterity and heat level (MIG, TIG, stick)
• Respiratory kits & components when ventilation is limited or fume levels are high

Which welding helmet shade should I use?

Shade selection depends on process and amperage. As a quick guide, SMAW (stick) and FCAW typically require darker shades than TIG at low amps, while high-amp MIG needs the darkest settings. Variable auto-darkening filters simplify selection by covering a wide shade range with a single lens.

Auto-darkening vs. passive welding helmet — which is better?

• Auto-darkening: Sensors detect the arc and darken instantly, improving visibility for joint setup and tacking; ideal for frequent repositioning.
• Passive (fixed-shade): Simple and durable; preferred by some for high-heat, repetitive work. Swap plates to change shade.

What are welding filters and shade plates used for?

Welding filters block IR/UV and visible arc intensity. You’ll find fixed-shade plates, variable auto-darkening cartridges, and accessory cover plates. Match your filter to process current, and replace cover lenses whenever pitting or spatter reduces clarity.

Do I need welding glasses or goggles if I already use a helmet?

Yes, for non-arc tasks. Welding glasses/goggles protect against grinding debris, cutting sparks, and oxy-fuel flare. Use the appropriate impact rating and, for oxy-fuel, the correct filter shade for cutting or brazing.

Which welding gloves should I choose—MIG, TIG, or stick?

• TIG gloves: Thin, supple leather for high dexterity and precise filler control.
• MIG gloves: Medium padding with heat protection and good grip.
• Stick gloves: Heavier insulation for high spatter and temperature exposure.

Select glove size for a snug, secure fit—too loose reduces dexterity; too tight increases heat transfer.

When is a welding respirator or PAPR system required?

Use respiratory protection when ventilation cannot keep fume levels below limits, when welding on coated/galvanized materials, or in confined spaces. Powered Air-Purifying Respirators (PAPR) provide filtered, positive-pressure air under a compatible helmet or hood; half-mask respirators fit under certain hoods—verify compatibility.

What cutting and gas-handling equipment do welders use?

Common kits include oxy-fuel torches, cutting tips, regulators for oxygen and fuel gases, and hose assemblies. Use the correct CGA connections, check valves, and flashback arrestors, and follow leak-check and shutdown procedures for safe operation.

How do I choose welding PPE that fits correctly?

• Helmets: Adjust headgear height, crown, and tension; ensure full coverage without impeding vision.
• Gloves: Measure palm width and finger length; choose process-specific insulation and cuff length.
• Respirators: Select the right size and perform a user seal check every time you don a tight-fitting mask.

Welding safety checklist for new setups

• Confirm lens shade and sensitivity before striking an arc.
• Wear flame-resistant clothing; secure cuffs and avoid synthetics.
• Provide local exhaust or fume extraction when needed.
• Stage a Class ABC fire extinguisher and clear combustibles.
• Inspect leads, torches, regulators, and hoses prior to use.