October 13th, 2008 
admin 
Welding is used as a fabrication process in every small and large-scale industry. This is an efficient, economical and dependable process of joining two or more parts of metal. The process finds its applications in open air, underwater and outer space.
Among the welding processes, arc welding is widely used mainly because of its low capital and running costs. Arc welding is the fusion of two pieces of metal by an electric arc between the pieces being joined – the work pieces – and an electrode that is guided along the joint between the pieces.
The four types of arc welding are shielded metal arc welding, gas metal arc welding, flux-cored arc welding, and submerged arc welding.
Shielded metal arc welding (SMAW) also known as manual metal arc (MMA) or stick welding, is the most popular among the arc welding processes primarily because of the versatility of the process and the simplicity of its equipment and operation. This process is preferred for repair work and construction applications as this requires minimum operator training and inexpensive equipment, albeit slower weld times.
On the other hand, Gas metal arc welding (GMAW) is a high-speed but less versatile welding process. It is a semi-automatic or automatic welding process that uses a continuous wire feed as an electrode and an inert or semi-inert shielding gas to protect the weld from contamination. Given its speed and versatility, GMAW is popular in the automobile industry.
Similarly, flux-cored arc welding (FCAW) uses the same equipment as the GMAW except that it employs wire consisting of a steel electrode tube surrounding a powder fill material. This cored wire is more expensive compared to the standard solid wire and generates extra shielding gas and/or slag, however, it permits higher welding speed and greater metal penetration.
Submerged arc welding (SAW) is a high-productivity welding method in which the arc is struck beneath a covering layer of flux. Because contaminants in the atmosphere are blocked by the flux, this process increases arc quality.
Arc welding is a safe process when proper precautions and operating procedures are strictly followed. Employing new technology and protection measures will greatly reduce its potential hazards.
Several institutions are offering various welding trainings to cater to the heightened demand for arc welders or welding engineers for a wide range of applications in different industries like engineering, construction, and tourism all over the world.
About
TEKTONE Global Technologies Foundation Inc. is a technical-vocational foundation institution in Bicol and is the premier provider of heavy equipment operation training and welding training in Legazpi City. It aims to produce globally-competitive skilled workers in construction, tourism and related sectors.
Watch the video related to welding
Aluminum welding. How to MIG weld on aluminum with a Millermatic and a Spoolgun. Setup and weld techniques are covered. www.MillerWelds.com
Help answer the question about welding
How to prepare the right welding procedures specification?The WPS pipe welding, single V butt weld. Can anybody explain what is the important think in WPS?
About Author
Coreen Lopez is a writer, wife, and mother of three who lives in Legaspi City. She loves to travel and has a passion for writing and cooking.
Posted in 
Tags: 
nice weld
the metal isnt dirty enough to affect it. I certified with metal that looked like that
My suggestion is that you take one of those 6 week welding courses at the local college.
You just don't start by reading a book.
Now i have an office job, but i have been a welder fitter for 20 years.
Make sure the first thing you buy is a fire extinguisher
The fabrication of hull of large ships is normally done by panels assembled into blocks then the blocks are assembled into sections of the vessel and finally the sections are joined to form the hull.
First, panels consisting of plates and stiffeners are made. In the fabrication of the panels submerged arc welding is most suitable since most of the welding are made on flat surfaces and these can be done using automatic welding machines. Several of these machines can be run by a single operator
.For the assembly of the blocks however, most of the welding operations are done manually because automatic welding machines may no longer be suitable.
Manual arc welding is also used in the assembly of the blocks to form a section of the vessel and also for welding the sections of the hull together.
welding is a physically demanding job, regardless of the type, most of the time you are sitting or standing for long periods of time, but it is also a great trade to have, if your asking about strength, it depends on the job, if you are production welding then you do not need to be very strong, but if you are a welder-fitter you would need alot of strength, because you would be handling material by hand and it can get pretty heavy, basically its up to you to know what type of welding you want to get into, and if you feel that it would be right for you in a physical sense. hope that helps with your question, good luck.
very nice hand still
Dont hold….!!!!
Have you guys seen “You Can’t Weld This!”? It’s pretty funny… The guys over at WeldingMart com had it made! Do a youtube search for it
I would like to see that weld cut open and sent to a lab for testing. HE DID NOT EVEN CLEAN THE METAL. Dirty welds have poor penetrations and are set up to fail. People, if you are too lazy to clean the metal, don’t weld.
The WPS is the specific directions instructing the welder in how to execute the weld. It would specify method (mig, co2, stick, submerged arc, etc.), material for the base metal and the filler metal, directions of travel, position of the weld (horizontal, vertical, angular, etc), voltage, and similar variables.
Any WPS must be qualified to demonstrate that it produces the weld characteristics that are desired. It then becomes the recipe so to speak for each welder to follow.
A WPS is typically written by a person experienced in welding.
You'll probably need a formal internship or apprenticeship. Especially in this economy, there's no shortage of experienced workers.
Hahaha I work at a Sawmill If the welders where I work cleaned all the metal before they welded they wouldnt be welding very much! I see them blast the metal quikly with a torch and then weld away!
Do not use welding glass. It does not protect camera lens at all.
Go to a store and buy appropriate filter even a bigger one and attach it to your camera.
making a triangle is a good technique
get an arc welder that has at least 200 amps dc
a name brand such as lincoln miller etc
practice with the 6013
switch to 7018 for higher strength
mig welds are strong but brittle they will break without warning if overloaded
and yes i know a lot of shops use the mig on everything
but if they see what i see all of the time they wouldn,t
arc welds will usually start cracking before they fail
on the lighter metals you are talking about the mig would be ok or if you plan to do any aluminum welding
but if you want to go to heavier metal later the arc welder is better
most of my welding is done on 3/4 inch or thicker metal
i will use my mig if it is nonstructural
if you think what i say about a mig is not true try fillet welds on 1/4 inch plate then bend them
18v with 260 wire… I think you should use less wire, more like 190-210. But that’s just me. Weld would look flatter. Have a nice d@y! =)
you use what is most comfortable you need to be able to see the puddle of molten metal to make sure you have good penetration and a decent looking bead I prefer a glass #10 and a glass cover plate how ever I'm thinking of buying a self darkening helmet as the price has come down to around $ 50 the auto darkening system has been on the market for about 15-20 years my brother bought one when they first came out and paid about $ 275 but the novelty wore off for him you can get a auto darkening from http://www.harbor freight.com Do not look at the light with out a welding lens as you will burn your eyes out!
you may want to do a search on that (google). That may give u the help u need. Good luck!