Plasma Arc Welding

2 January 2011

How does welding work?

how does a MIG Weld work?
how does a Arc or Stick weld work?
how does an Oxy Acetylene weld work?
How does the plasma cutter work?

A MIG welder (Metal – Inert Gas) passes a current through a continuously fed solid core wire which strikes an arc against the substrate. The wire feed gun head floods the wire end with an inert gas such as Argon to shield the weld area. The arc melts the wire and heats the substrate forming a welding puddle which the welder advances to build a finished weld.

Arc/Stick welding uses a fixed rod which is coated in a solid flux to strike an arc with the substrate. The heat of the arc melts the flux agent which floats on the top of the weld puddle shielding it from oxygen. The welder advances the stick and puddle to build the finished weld.

Oxy Acetylene welding uses a neutral flame formed by combusting Acetylene gas wth Oxygen. A flame of about 6000degF is formed. The heat of the flame melts the substrate and forms a puddle which fills the weld gap forming a finished weld. A welder can add a filler rod if needed to improve weld quality.

A plasma cutter forms an arc in a nozzle which heats a high speed pressurized stream of inert gas, often Nitrogen or Argon, ( occasionally non-inert Oxygen) which impinges on a workpiece. The imense heat of the plasma (15,000 degC typical) melts and oxidizes the substrate and blows the debris clear of the work.

Astrobuf


Antra AH7-860-6218 Solar Power Auto Darkening Welding Helmet AntFi X60-8 Jumbo Viewing Size 3.78X3.5 Variable Shade 4/5-9/9-13 with Grinding Feature Extra lens cover Good for Arc Tig Mig Plasma CSA / ANSI Certified By Colts Lab


Antra AH7-860-6218 Solar Power Auto Darkening Welding Helmet AntFi X60-8 Jumbo Viewing Size 3.78X3.5 Variable Shade 4/5-9/9-13 with Grinding Feature Extra lens cover Good for Arc Tig Mig Plasma CSA / ANSI Certified By Colts Lab


$96.95


Jumbo Size!!! Brand new auto darkening welding helmet with solar power design Made by Antec Electronics. Ideal choice for PROFESSIONAL USE. The auto darkening filter AntFi X60-8 is designed for Arc Welding or cutting applications. This unit is suitable for all Arc Welding processes such as MIG,MAG,TIG,SMAW,Plasma Arc, and Carbon Arc. In event of electric failure, the welder remains proctected agai…

Welding Safety Glasses, Shade 5.0 Lens


Welding Safety Glasses, Shade 5.0 Lens


$14.12


Welding Safety Glasses, Series: ArcArmor, Gender: Unisex, Lens Color: Shade 5.0, Lens Coating: Scratch-Resistant, Reflective, Frame Design: Wraparound, Frame Color: Black, Frame Material: Polycarbonate, Size: Universal, Lens Material: Polycarbonate, Temple Color: Black, UV Protection: 99.9%, Includes: Rubber Earpad, Standards: ANSI Z87.1…

Antra AH6-260-6320 Solar Power Auto Darkening Welding Helmet with AntFi X60-2 Wide Shade Range 4/5-9/9-13 with Grinding Feature Extra lens covers Good for Arc Tig Mig Plasma CSA/ANSI Certified By Colts Lab


Antra AH6-260-6320 Solar Power Auto Darkening Welding Helmet with AntFi X60-2 Wide Shade Range 4/5-9/9-13 with Grinding Feature Extra lens covers Good for Arc Tig Mig Plasma CSA/ANSI Certified By Colts Lab


$49.95


**This welding helmet is designed for Arc welding or cutting processes such as MIG,MAG,TIG,SMAW and Plasma Arc.****In event of electric failure, the welder remains protected against UV and IR radiation according to shade 16.**
**Fully automatic power ON/OFF **
**Cheater Lens Compatible****Continuously adjustments for delay time and sensitivity control **
**Very light design for comfort, only 43…

MIG TIG Plasma Cutter Arc Welding Cart with Tank Storage


MIG TIG Plasma Cutter Arc Welding Cart with Tank Storage


$35.50


This heavy duty MIG welding cart features: 3 Shelves for easy access to supplies, 18″ x 10.5″ top deck, Holds 9 1/2″-Diameter tank, Industrial powder coating resists chips and rust, Built in cylinder rack and storage tray, Heavy duty casters; 2 fixed and two swivel, Cart measures 28″-L x 12″-W x 28″-H,100 lb. weight capacity…

Goplus® Welding Welder Cart MIG TIG ARC Plasma Cutter Tank Storage w/ 4 Drawer Cabinet


Goplus® Welding Welder Cart MIG TIG ARC Plasma Cutter Tank Storage w/ 4 Drawer Cabinet


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This is our 4 Drawer Cabinet Welding Cart which could Keep all of your welding tools and supplies organized in one place. This welding cart is the perfect addition to any MIG welder or plasma cutter. It is all steel construction with a durable finish for years of use. Smooth-rolling cart and organized drawers will store all your small welding needs….

Lotos LTPDC2000D Plasma Cutter Pilot Arc 50Amp Dual Volt 200A TIG/ Stick Welder


Lotos LTPDC2000D Plasma Cutter Pilot Arc 50Amp Dual Volt 200A TIG/ Stick Welder


$529.96


The Lotos LTPDC2000D is a first to market multi purpose welder that allows the user to DC TIG/Stick weld and plasma cut all from one portable machine. LTPDC2000D combines 3 functions into one with a 200amp DC TIG Welder, a 200 Amp Stick Welder, and a 50amp Pilot Arc Plasma Cutter with the flip of a switch. It is able to cut various types of metal up to 1/2 inch with the 50A pilot arc plasma cuttin…

Welder's Handbook, RevisedHP1513: A Guide to Plasma Cutting, Oxyacetylene, ARC, MIG and TIG Welding


Welder’s Handbook, RevisedHP1513: A Guide to Plasma Cutting, Oxyacetylene, ARC, MIG and TIG Welding


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A newly-updated, state-of-the-art guide to MIG and TIG arc welding technology. Written by a noted authority in the field, this revised edition of HP’s bestselling automotive book-for over 20 years-is a detailed, instructional manual on the theory, technique, equipment, and proper procedures of metal inert gas (MIG) and tungsten inert gas (TIG) welding….

The Haynes Welding Manual


The Haynes Welding Manual


$7.55


Inside this manual you will find routine maintenance, tune-up procedures, engine repair, cooling and heating, air conditioning, fuel and exhaust, emissions control, ignition, brakes, suspension and steering, electrical systems, and wiring diagrams….

Welder's Handbook: A Complete Guide to MIG, TIG, Arc & Oxyacetylene Welding


Welder’s Handbook: A Complete Guide to MIG, TIG, Arc & Oxyacetylene Welding


$11.99


Finch has updated and revised his classic handbook with the latest information available on welding, brazing, and cutting; equipment and safety; fitting and jigging; gas welding, cutting, brazing, and soldering; arc, MIG and TIG welding; plasma cutting; and more….

BephaMart Theatrical Mask Auto Darkening Welding Helmet Arc Tig Mig Grinding Welders Mask Shipped and Sold by BephaMart


BephaMart Theatrical Mask Auto Darkening Welding Helmet Arc Tig Mig Grinding Welders Mask Shipped and Sold by BephaMart


$26.59


Description::: Theatrical Mask Auto Darkening Welding Helmet Arc Tig Mig Grinding Welders Mask This is the all new Pro welding helmet, solar powered and gets its power from the welding arc, so it turns on automatically. They have the carbon fiber look. These helmets are made for Arc or Stick, MIG welding, Tig welding including a plasma cutting setting(grinding mode). Specification: Arc Sensor 2 Fi…