Great Welds & Fabrication, LLC Welding Services
Servicing Most Of North Georgia & Beyond!
With over 10 years in the welding service industry we can handle all your welding needs. No job is too small. We work with all metals. It does not matter if it is stainless steel, carbon steel or aluminum we can handle it. We have a variety of welding processes we use. We can Stick, Mig, Tig and Flux core weld along with plasma cutting and arc gouging. We are also able to do braze and oxy-fuel welding and cutting. Our equipment is some of the best quality equipment on the market today. Best of all, we can come to you with our mobile welding service. We also offer custom builds in our welding shop. If you have an idea for a metal fabrication project, we can help you make it a reality!
Whether the job requirement be on-site or completed in our facility, Great Welds & Fabrication, LLC works on:
- Mobile Welding Service
- Pattern & Plasma Cutting
- Metal Fabrication
- Stainless Steel Welding
- Pipe Welding
- Residential Welding
- Farm Equipment Welding
- Marine Equipment Welding
- Trailer Repair
- Iron work including Gates
- Metal Art
- Hand Rails
- Sign Welding
- Industrial Welding
- Heavy Equipment Welding
- Aluminum Welding
- Boat Dock Welding
- Pontoon Boat Welding
Great Welds & Fabrication, LLC is equipped and qualified to weld a variety of metals to include:
- Carbon Steel
- Stainless Steel
- Cast Iron
Our Service Trucks are equipped with the top-of-the-line equipment and they contain:
- Their own power source
- Air Supply (to run Plasma Cutter and Arc Gouging Equipment)
- Crane (3200 lbs Capacity)
- On board Welder/Generator
- Portable Welder
Stick (Shielded Metal Arc Welding) Service
Stick welding is a manual arc welding process that uses a consumable electrode covered with a flux to lay the weld.
An electric current, in the form of either alternating current or direct current from a welding power supply, is used to form an electric arc between the electrode and the metals to be joined. The work-piece and the electrode melts forming the weld pool that cools to form a joint. As the weld is laid, the flux coating of the electrode disintegrates, giving off vapors that serve as a shielding gas and providing a layer of slag, both of which protect the weld area from atmospheric contamination.
Because of the versatility of the process and the simplicity of its equipment and operation, shielded metal arc welding is one of the world’s first and most popular welding processes. It dominates other welding processes in the maintenance and repair industry, and though flux-cored arc welding is growing in popularity, SMAW continues to be used extensively in the construction of heavy steel structures and in industrial fabrication. The process is used primarily to weld iron and steels (including stainless steel) but aluminum, nickel and copper alloys can also be welded with this method.
Metal Inert Gas (MIG) Welding Or Metal Active Gas (MAG) Welding Service
MIG welding is a welding process in which an electric arc forms between a consumable wire electrode and the work-piece metal(s), which heats the workpiece metal(s), causing them to melt and join.
Along with the wire electrode, a shielding gas feeds through the welding gun, which shields the process from contaminants in the air. The process can be semi-automatic or automatic. A constant voltage, direct current power source is most commonly used with GMAW, but constant current systems, as well as alternating current, can be used. There are four primary methods of metal transfer in GMAW, called globular, short-circuiting, spray, and pulsed-spray, each of which has distinct properties and corresponding advantages and limitations.
Originally developed for welding aluminum and other non-ferrous materials in the 1940s, GMAW was soon applied to steels because it provided faster welding time compared to other welding processes. The cost of inert gas limited its use in steels until several years later, when the use of semi-inert gases such as carbon dioxide became common. Further developments during the 1950s and 1960s gave the process more versatility and as a result, it became a highly used industrial process. Today, GMAW is the most common industrial welding process, preferred for its versatility, speed and the relative ease of adapting the process to robotic automation. Unlike welding processes that do not employ a shielding gas, such as shielded metal arc welding, it is rarely used outdoors or in other areas of air volatility. A related process, flux cored arc welding, often does not use a shielding gas, but instead employs an electrode wire that is hollow and filled with flux.
Tungsten Inert Gas (TIG) Welding Service
TIG is an arc welding process that uses a non-consumable tungsten electrode to produce the weld. The weld area is protected from atmospheric contamination by an inert shielding gas (argon or helium), and a filler metal is normally used, though some welds, known as autogenous welds, do not require it. A constant-current welding power supply produces electrical energy, which is conducted across the arc through a column of highly ionized gas and metal vapors known as a plasma.
GTAW is most commonly used to weld thin sections of stainless steel and non-ferrous metals such as aluminum, magnesium, and copper alloys. The process grants the operator greater control over the weld than competing processes such as shielded metal arc welding and gas metal arc welding, allowing for stronger, higher quality welds. However, GTAW is comparatively more complex and difficult to master, and furthermore, it is significantly slower than most other welding techniques.
Flux-cored Arc Welding (FCAW or FCA) Service
This is a semi-automatic or automatic arc welding process. FCAW requires a continuously-fed consumable tubular electrode containing a flux and a constant-voltage or, less commonly, a constant-current welding power supply. An externally supplied shielding gas is sometimes used, but often the flux itself is relied upon to generate the necessary protection from the atmosphere, producing both gaseous protection and liquid slag protecting the weld. The process is widely used in construction because of its high welding speed and portability.
FCAW was first developed in the early 1950s as an alternative to shielded metal arc welding (SMAW). The advantage of FCAW over SMAW is that the use of the stick electrodes used in SMAW is unnecessary. This helped FCAW to overcome many of the restrictions associated with SMAW.
Plasma Cutting Service In North Georgia
Plasma cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasma. Typical materials cut by this process include steel, aluminum, brass and copper though other conductive metals may be cut as well. Plasma cutting is often used in fabrication and welding shops, automotive repair and restoration, industrial construction, salvage and scrapping operations. Due to the high speed, precision cuts, combined with low cost of operation, plasma cutting sees a widespread usage from large scale industrial CNC applications down to small hobbyist shops.
Arc Gouging Service
Air carbon arc cutting previously known as air arc cutting, is an arc cutting process where metal is cut and melted by the heat of a carbon arc. Molten metal is then removed by a blast of air. It employs a consumable carbon or graphite electrode to melt the material, which is then blown away by an air jet.
This process is useful for cutting a variety of materials, but it is most often used for cutting, and gouging aluminum, copper, iron, magnesium, and carbon and stainless steels. Because the metal is blown away by the air jet, it does not need to be oxidized. This process differs from plasma cutting operations because in air carbon cutting, an open, or un-constricted, arc is used, and the arc operates separately from the air jet.
Air pressures for the jet usually vary from 60 to 100 psi. The carbon electrode can be worn away by oxidation from heat buildup. This can be reduced by coating the carbon electrodes with copper.
The sharpened carbon electrode is drawn along the metal, an arc forms and melts the metal. The air jet is then used to blow away molten material. This can be dangerous as the molten material can be blown substantial distances. The process is also very noisy.
Oxy-fuel Welding Service
oxyacetylene welding, oxy welding, or gas welding in the U.S.) and oxy-fuel cutting are processes that use fuel gases and oxygen to weld and cut metals, respectively. French engineers Edmond Fouché and Charles Picard became the first to develop oxygen-acetylene welding in 1903. Pure oxygen, instead of air, is used to increase the flame temperature to allow localized melting of the workpiece material (e.g. steel) in a room environment. A common propane/air flame burns at about 2,250 K (1,980 °C; 3,590 °F), a propane/oxygen flame burns at about 2,526 K (2,253 °C; 4,087 °F), an oxyhydrogen flame burns at 2,800 °C (5,070 °F), and an acetylene/oxygen flame burns at about 3,773 K (3,500 °C; 6,332 °F).
Oxy-fuel is one of the oldest welding processes, besides forge welding. In recent decades it has been obsolesced in most all industrial uses due to various arc welding methods offering more consistent mechanical weld properties and faster application. Gas welding is still used for metal-based artwork and in smaller home based shops, as well as situations where accessing electricity (e.g., via an extension cord or portable generator) would present difficulties.
In oxy-fuel welding, a welding torch is used to weld metals. Welding metal results when two pieces are heated to a temperature that produces a shared pool of molten metal. The molten pool is generally supplied with additional metal called filler. Filler material depends upon the metals to be welded.
In oxy-fuel cutting, a torch is used to heat metal to its kindling temperature. A stream of oxygen is then trained on the metal, burning it into a metal oxide that flows out of the kerf as slag.
Torches that do not mix fuel with oxygen (combining, instead, atmospheric air) are not considered oxy-fuel torches and can typically be identified by a single tank (oxy-fuel cutting requires two isolated supplies, fuel and oxygen). Most metals cannot be melted with a single-tank torch. As such, single-tank torches are typically used only for soldering and brazing, rather than welding.
Oxy-fuel welding and cutting. (2016, June 22). In Wikipedia, The Free Encyclopedia. Retrieved 17:10, June 22, 2016, from https://en.wikipedia.org/w/index.php?title=Oxy-fuel_welding_and_cutting&oldid=726459554 Shielded metal arc welding. (2016, May 4). In Wikipedia, The Free Encyclopedia. Retrieved 17:12, June 22, 2016, from https://en.wikipedia.org/w/index.php?title=Shielded_metal_arc_welding&oldid=718525194 Gas metal arc welding. (2016, June 15). In Wikipedia, The Free Encyclopedia. Retrieved 17:12, June 22, 2016, from https://en.wikipedia.org/w/index.php?title=Gas_metal_arc_welding&oldid=725350130 Gas tungsten arc welding. (2016, June 13). In Wikipedia, The Free Encyclopedia. Retrieved 17:13, June 22, 2016, from https://en.wikipedia.org/w/index.php?title=Gas_tungsten_arc_welding&oldid=725076851 Flux-cored arc welding. (2016, April 5). In Wikipedia, The Free Encyclopedia. Retrieved 17:14, June 22, 2016, from https://en.wikipedia.org/w/index.php?title=Flux-cored_arc_welding&oldid=713719936 Plasma cutting. (2016, June 11). In Wikipedia, The Free Encyclopedia. Retrieved 17:14, June 22, 2016, from https://en.wikipedia.org/w/index.php?title=Plasma_cutting&oldid=724819972 Plasma arc welding. (2016, May 23). In Wikipedia, The Free Encyclopedia. Retrieved 17:15, June 22, 2016, from https://en.wikipedia.org/w/index.php?title=Plasma_arc_welding&oldid=721636792 Oxy-fuel welding and cutting. (2016, June 22). In Wikipedia, The Free Encyclopedia. Retrieved 17:16, June 22, 2016, from https://en.wikipedia.org/w/index.php?title=Oxy-fuel_welding_and_cutting&oldid=726459554