Welding and Cutting

The welding and cutting category covers the various types of welding (arc, mig, tig) and the carious electrodes used for welding various metals. There are also questions regarding tips on various problems experienced by welders. Cutting is also a part of a welder's job and it too has many aspects.

3,065 Questions
Space Travel and Exploration
Welding and Cutting

What is full form of ARC in arc welding?

The 'arc' in arc welding is not an acronym but in turn is a reference to the electric arc that is being generated during the welding process.

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Welding and Cutting

What is ocv with MMA welding?

Open Circuit Voltage

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Internet
Mechanical Engineering
Welding and Cutting

What is staggered welding?

STAGGERED INTERMITTENT FILLET WELDTwo lines of intermittent welding on a joint, such as a tee joint, wherein the fillet increments in one line are staggered with respect to those in the other line.Regards, Dineshraj.m

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Mechanical Engineering
Welding and Cutting

Welding employed for plastics?

Gas welding & Friction welding.

Souvik Kumar Dey

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Auto Parts and Repairs
Welding and Cutting

What are the Parts and function of oxy-acetylene welding?

You have oxygen and acetylene to blend into the tip for a flame. It will be regulated by adjusting the regulators on the bottles and the welding handle will have adjusting ability for the temperature you need for the metal you are welding.

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Mechanical Engineering
Welding and Cutting

WHAT DO the letters MTR's mean in welding terms?

MTR in welding?

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Welding and Cutting

What is flux coating?

When you weld steel you need to make sure that oxygen in the air is kept away from the weld while it's being formed. Otherwise the iron in the weld burns in the oxygen and forms a poor weld. Electric welding rods are generally coated with a flux which forms a gaseous shield around the weld point and keeps away the air.

Some welding processes (MIG for example - MIG stands for metal inert gas) do not use a flux coating but have an arrangement where argon or CO2 is passed to the weld point to keep the air away in a different way.

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Welding and Cutting

Welding current for a 3.2mm rod?

The current requirement while welding with 3.2 mm size electrode varies with wether it is root pass or second or capping pass. As for root pass value of current will be () and for 2nd or capping pass its value will be ().

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Mechanical Engineering
Welding and Cutting

How old is welding?

While welding as it is known today did not come about until the 19th century, primitive welding processes have been in existence for thousands of years. Metal tools and weapons have been discovered dating back to 1000 B.C.E. It was during the Bronze Age that humans first learned to fuse two metals together using heat. The Iron Age brought about increased use of fusing procedures. In the Middle Ages, blacksmithing was developed, which joined two metals through the use of fire and hammering.

Source: http://www.gawdawiki.org

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Mechanical Engineering
Welding and Cutting

How can you reduce spatters in welding process?

by having the machine properly set and good consumables.

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Mechanical Engineering
Welding and Cutting

What is intermittent welding?

intermittent welding (also known as skip welding) is a pattern of welding that allows the weld joint to cool by welding in a series of "skips" on opposite or far sides from the last bead. This pattern is often used for thin material as it is likely to warp if overheated.

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Plumbing
Engineering
Welding and Cutting

What is a counter flange and how is it different from a normal flange?

The term"counter flange" is used in Europe to refer to a mating flange to make up a flange pair. For example a "counter flange" attached to a pipe must have the same bolt circle diameter, number of bolts, and size of bolts and pressure rating at the equipment nozzle flange provided by an equipment manufacturer.

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Welding and Cutting

What are three types of metal transfer in an arc welding process?

Spray, Solid, and Globular which is part way between the other two.

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Welding and Cutting

What does porosity mean in welding?

Porosity is the formation of bubbles in the weld.

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Oxygen Sensors
Welding and Cutting

What color is the oxygen tank for welding?

oxygen tanks are usually green in the united states, however, no standard is adhered to uniformly.

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Ford Explorer Eddie Bauer
Electronics Engineering
Electrical Engineering
Welding and Cutting

What is the effect of current and voltage on welding?

welding current decides the electrode burn off rate, depth of fustion, geometry of weldments. welding voltage decides shape of fusion zone and weld reinforcement.

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Insurance
Small Business and Entrepreneurship
Mechanical Engineering
Welding and Cutting

Do you need insurance to open welding shop?

It would be an excellent idea. You will be working with powerful welding arcs and open flames as well as large bottles of flammable gases. It would also probably be a good idea to open your business as a limited liability corporation (LLC) to protect you and your family's personal assets. Good luck!

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Robotics
Welding and Cutting

What is the best welder to use for a go kart?

Depends on a lot of things. Slickest work, but most expensive - TIG. Cheapest - arc (stick) welder. Reasonably user friendly and inexpensive - wire-feed arc/ MIG welder.) Most versatile - Oxyacetylene. Oxy will give have the biggest heat affected zone and is the hardest to use (IMO). If your kart is really thin wall tubing you can forget about the stick welder and even the MIG will be quite tricky.

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Mechanical Engineering
Welding and Cutting

What is manual metal arc welding?

It is one of the arc welding process in which the movement of consumable electrode i.e, downward, to the direction of line of welding, side to side movement are controlled by human beings

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Chemical Engineering
The Difference Between
Welding and Cutting

What is the difference between soldering and welding?

ANSWER:Soldering is a joint repair for two pieces of metal, like a chip to a circuit board using lead. Welding is taking two pieces of metal and heating them up to the same temperature and making a single piece of metal out of two separate pieces.

I was taught that soldering,as it relates to piping, is the heating of the base metal to a point to where the filler metal will melt and fill the gap between the two pieces of metal being soldered. The base metal is NOT melted, only the filler metal. Soldering is usually used to join non-ferrous metals. Welding is when the base metal is heated to a point where it will melt and , with the filler metal, becomes part of the weldment. In other words, the two pieces become one, and the resulting weld is now a blend of base metal and filler metal.

soldering is a very low heat (melting temperature of the soldering alloy is less than 840 degrees Fahrenheit), semi-adhesion process, final product: 2 base materials, and a filler material on top. welding is high heat fusion process, final product: a solid blended material

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Mechanical Engineering
Welding and Cutting

What is the definition of dia inch of welding?

This is used differently in different countries. But generally, if a welder is contracted to do say 100 weld joints, of a 1" pipe, then the total work involved is 100" dia welding work. If 100 weld joints of a 2" pipe is 200 weld work and so on.

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Home Improvement
Plumbing
Welding and Cutting
Metal and Alloys

What kind of welding shall i use to weld copper pipe to aluminum pipe?

use duck tape it works on everything : D i have to agree, adhere it if you can, otherwise use a VERY low heat propane torch. Acetylene burns WAY too hot, and you won't get a good arc going over 2 types of metal. Also, I don't know if you can find a compatible filler rod though. If you do get the metals to stick together, becareful, if wont be very strong. Good luck The proper way to join aluminium pipe to copper is to use a threaded adaptor on the aluminium and add a copper adaptor . you then solder the copper.

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Chemistry
Welding and Cutting

What reaction takes place during oxyacetylene gas welding?

5O2 + 2C2H2 --> 4CO2 + 2H2O + Qoxygen + acetylene -> carbon dioxide + water + heat-energy
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Welding and Cutting

What is the significance of the arc welding process?

The significance of the arc welding process are:-1. Flux Shielded Manual Metal Arc Welding is the simplest of all the arc welding processes.

2. The equipment can be portable and the cost is fairly low.

3. This process finds innumerable applications, because of the availability of a wide variety of electrodes.

4. A big range of metals and their alloys can be welded.

5. Welding can be carried out in any position with highest weld quality.

6. The process can be very well employed for hard facing and metal deposition to reclaim parts or to develop other characteristics like wear resistance etc.

ARSHAD H BHUTTO

SALES ENGINEER-LINCOLN ELECTRIC WELDING PRODUCTS

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Auto Parts and Repairs
Welding and Cutting

Kind or types of oxy-acetylene welding?

Types are aluminium, steel, bronze, brass, etc...

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