Welding and Cutting

root pass

Actually it is MSDS - Manufacturers Safety Data Sheets. They include any and all chemicals, elements, or organics that could be harmful to the user. For example electrode coatings contain ingredients that if, inhaled, could cause lung damage. Argon is an inert gas and you can drown in it. All manufacturers must supply these (MSDS) to any users who request them. At the Vocational Center we had to maintain a file on any/all items we used. Paints contain chemicals that contain poisonous ingredients. Spray cans contain flammable gasses.

Who makes the best welding machines is quite subjective. Some of the best machines are said to be made by Lincoln Electric while others prefer Miller Electric machines.

A welding cable is used for joining or linking up wires or cable. Welding is the process of joining two things together, and the cable is the connector.

how do I start a private welding school in Ohio

When man started to melt and cast metal he would pour the molten metal into a mold, usually formed in the sand. If he wanted to join two or more of these "castings" he would place them close together and pour more molten metal where they touched. This would melt the edges of the two castings and upon cooling join them with weld. This is a basic welding process.

For welding engineering--LeTourneau University, Longview, TX

Only ABET accredited in Welding Engineering--The Ohio State University, Columbus OH

Only ABET accredited in Welding Engineering Technology--Ferris State University, Big Rapids, MI

One would weld a flange tight by firstly establishing which type of joint they were welding. One of the most common is welding a neck flange. For this you would need to ensure that both pieces of material to be welded are melted on the first bead of the weld. You would continue around the pipe until you reach the beginning. Once back at the start you need to ensure that the final bead is higher than the joint being welded. The weld should be approximately 1/16th of and in to 1/8th of and inch from the pipe to the flange.

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Basic celetape found in most stores.

The lap length for welding a reinforced bar will depend on the size of the bar that is being welded. If the bars are different diameters when lapped, the lap length should be calculated using the lesser diameter.

The step-by-step instructions on how to do a weld fitting on a A234 with a pipe of API 5L x60 w TH11.9 mm is not listed. It might be best to purchase a weld fitting manual for a A234 for further information.

There are specialty stores that sell protective gear for welders but they can also be purchased at Sears Hardware stores. They sell a number of the best selling brands of welding helmets.

High frequency welding is a process where plastics such as PVC are heated with high frequency waves. This is to soften the plastics for easier molding.

All welding processes have their positive and negative features. MIG/GMAW is easy to learn and use. It can be used on a large variety of materials and thicknesses (especially very thin). The welding lead is much lighter than a SMAW lead. When used with Flux-core wire inert gas is not needed in most cases. The machines are reasonably priced. Welding can be done in all positions without adjusting the Amperage. Very little smoke is produced allowing you to see the weld in progress. Large machines, using thick wire, can lay down a lot of weld in each pass. Some machines are controlled by computer and the welds are very accurate, this eliminates the need for an operater (Weldor). There is no need to stop and insert new Electrodes so deposition rates are higher plus no Electrode stubs to dispose of.

Several companies manufacture welding curtains. Some of the most popular brands of curtain include Goff's, Tillman, Nederman, Newfire and McMaster-Carr.

Lincoln Electric is a renowned leader in welding products and services. These services include pipe welding, gas tungsten arc welding, gas and metal arc welding.

it is the temp. that is up to 2000 degree centigrade

The letters EN , on a welding electrode , indicate "electrode negative" , that is the electrode is to be used with a DC current , in the negative position, or polarity.

OIL It can create an intense fire.

You have to find it. Companies that need weldors

advertise. Even if they aren't hiring you should submit an application. Ask friends, family, strangers, look in newspapers, online.

Even if you are excellent you have to get out there and look. You can't sit at home and expect employers to come looking for you.

It is the first pass in a multiple weld joint.

These are almost impossible to describe without drawing a sketch. Usually items called Dogs and Saddles using wedges and sometimes Jacks and Come-alongs are involved. A lot of these are made by the company onsite. Most test plates are held in position by fixtures designed specifically for that purpose.

Certain things come quickly to mind. The machines are cheaper than those used for most other processes. Some machines are engine driven (gasoline or diesel) making them useful at locations where there is no electricity (such as pipe lines). Almost any kind of metal can be welded as a large variety of electrodes are available. It is more portable cause you don't have to bring the machine to the work site, only the welding lead/cable. Gas coverage of the weld puddle is provided by the electrode coating. This eliminates the need to purchase gasses in cylinders, another cost savings. A wide variety of metal thicknesses can be welded by selecting the electrode size (diameter).

Ductility is "The ability to bend or flex". Stiffness, rigidity, and hardness come to mind. If a metal is hard it isn't Ductile.