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




















Lotos LTPDC2000D Plasma Cutter Tig Stick Welder 3 in 1 Combo Welding Machine, 50Amp Non-Touch Pilot Arc Plasma Cutter,  200A TIG/ Stick Welder Dual Voltage 220V/110V


Lotos LTPDC2000D Plasma Cutter Tig Stick Welder 3 in 1 Combo Welding Machine, 50Amp Non-Touch Pilot Arc Plasma Cutter, 200A TIG/ Stick Welder Dual Voltage 220V/110V


$458.99


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…

Solar Auto Darkening Welding Helmet - Arc Gouging & Plasma Cutting Welder Mask (American Eagle)


Solar Auto Darkening Welding Helmet – Arc Gouging & Plasma Cutting Welder Mask (American Eagle)


$26.99


Solar energy auto-darkening welding helmet is a set of spectral filtering technology, photoelectric inductive control technology, liquid crystal light control technology in one high-tech products. Auto darkening filter (ADF) works with the photoelectric induction principle, which makes the liquid crystal change from the bright state into a dark state in receiving the arc light, and automatic back…

Hobart 770028 Welding Holder Electrode 400 Amp - Screw Type


Hobart 770028 Welding Holder Electrode 400 Amp – Screw Type


$19.99


The Hobart 400 Amp Electrode Holder accepts rods up to 5/16in. dia. A quarter turn of the handle loosens the rod for easy removal or replacement. Product Type: Electrode holder, Works With: Electrode up to 5/16 in. dia….

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


$10.20


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….

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


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


$17.99


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….

Modern Welding


Modern Welding


$99.98


Modern Welding is a comprehensive text that has long been the standard for teaching the theory, fundamentals, equipment, and techniques of welding technology. This text provides thorough coverage of common welding and cutting processes, including gas tungsten arc welding, gas metal arc welding, shielded metal arc welding, oxyfuel gas welding and cutting, plasma arc cutting, and resistance welding….

Universal Welding Cart W 4 Drawer Cabinet Mig Tig Arc Plasma Cutter Tank Storage by JDM Auto Lights


Universal Welding Cart W 4 Drawer Cabinet Mig Tig Arc Plasma Cutter Tank Storage by JDM Auto Lights


$447.33


Brand new in box;4 drawer cart;Each Drawer 13-1/2 x 9 x 3;Overall dimensions: 27-3/4 L x 11-1/2 W x 30-1/2 H;Two safety chains for securing gas cylinder…