Welcome toMaxwell HS of TechnologyWelding Technology

Instructor• Charles J. Kachmar

– A.K.A. Coach K, Mr. K• Connecticut, BS Industrial Technology• UGA, Masters of Education Engineering• UGA Education Specialist, Ed. Leadership and

Workforce Development• Married, CJ 10, Caitlyn 5, Thomas my huntin’

dawg beagle.• South Gwinnett, Grayson, Tucker, Maxwell

Instructor• Team Teacher

Introductions• State your name, nickname ok.• State what school you are from.• State whether you are a junior or senior.• What was you most fun class at school

and why?

Student Information Card• This information is kept on file in the event

of an emergency. All information MUST be complete before you are allowed in the welding lab.

What Do We Do?

What Do We Do?

Essential Equipment• Eye Protection• ISO Z87.1 Safety Glasses/ANSI Z89

Essential Equipment• Eye Protection• Welding Helmet – Digital or Not

Essential Equipment• Gloves

Essential Equipment• Leather Boots

Essential Equipment• Grinder & Cutting Shield Helmet

Essential Equipment• Wire Hammer, Wire Brush, MIG Wire

Cutting Pliers

Shirts and Pants• Shirts – NO NYLON, or SYNTHETIC OR

SHORT SLEEVE– Cotton Thick Weave

• Pants – NO NYLON SWEATS, OR SHORTS.– Blue jeans are best, or cargo pants– Watch the number of pockets as spatter and hot

metal chips can easily get in your pockets, smolder and burn you.

Shirts and Pants

Shirts and Pants

Introduction to Welding• AWS – American Welding Society

Introduction to Welding

• Maxwell High School Student Chapter of AWS• Sign-up Sheet.• Free Membership• AWS will give school $100 grant for

membership.

Introduction to WeldingSkills USA Welding Competition

Introduction to Welding• AWS defines weldingwelding as a joining process that a joining process that

produces coalescence of materials by heating produces coalescence of materials by heating them to the welding temperature, with or without them to the welding temperature, with or without the application of pressure alone, and with or the application of pressure alone, and with or without the use of filler metal.without the use of filler metal.

• Forge Welding – 1750 to 1850 (Ancient China and Japan)

• Resistance Welding – Elihu Thompson 1886• Fusion Welding - WWI

Introduction to WeldingForge Welding

Introduction to WeldingResistance Welding

Introduction to WeldingFusion Welding – Modern Welding

Introduction to Welding• A Weld is a localized coalescence (the fusion

or growing together of a grain structure of the materials being welded) of metals and non-metals produced either by heating the materials to the required welding temperatures, with or without the use of filler materials.

• Show and Tell

Introduction to Welding• What could happen…REALLY?

Introduction to Welding• What could happen…REALLY?

Introduction to Welding• What could happen…REALLY?