Welder World Blog

Posts Tagged ‘John’

There many varieties of welding equipment which are used for different purposes. One of the most important things for these welding and cutting equipments is the water cooler. The work of water cooler is to cool the welding machines which get heated while welding. The welding heats up the torch of welders which needs a supply of water. Apart from these welding equipments you also need a welding helmet which protect for eyes and face from any harmful burns or sparks.

Plasma Cutter:

One of the most important things used for any construction is the metal. Metals play a vital role in constructing buildings. Now to cut the metals you need a cutter. There are some cutters which doesn’t cut all kind of metal. But there is one cutter which can cut all the metal in no time. It is known as plasma cutter. These cut the metal with the help of plasma torch. These are utilized for cutting steel and all conductive metals. These cutters need high voltage and are epitomized of plasma gas. To make use of this first the plasma gas is created. The advantage of this is it can cut any metal at high speed. While cutting the inner surface remains cool and this does catch fire in any circumstances.

Welders:

You can find many types of welders for welding objects like steel, aluminum and many other metals. Some of the welding equipments are Mig weld or GMAW, Tig weld or GTAW, Stick weld or SMAW, Spot weld and Arc weld. All these have different purpose and used for different industries. You can also find multi purpose unit which consist of plasma cutter, Mig weld, Tig weld and stick weld. They are the most versatile equipment because the space they need is really very less. Buying has made easy by shopping online. Now you can search and learn more about this product on net. Almost all the products have advantages and disadvantages. So buy the equipments which are very useful in your daily life.

Mig or GMAW weld:

This metal inert gas is other wise known as Gas Metal Arc weld. These utilize the wire electrode and also needs constant voltage supply. These are mostly used for building aircraft and automobiles. These are the easiest among the welders. You need a lot of practice before welding metals.

Tig or GTAW weld:

The other name for tungsten inert gas is the Gas Tungsten Arc welding. These are used for welding steel and non ferrous metal. These are easy to mechanize and automate. These are utilized in chemical and instrument industries. This gives a clean finish and are bit difficult for the beginners. These are highly pricey than the Mig welder and other welders.

Welding is in fact a complicated and vast subject to deal with and in this article you can learn about how you can turn you welding hobby more useful and good going. This article will be covering is a number of extremely essential necessities and a few of the fundamental beginner choices that anyone who starts off with welding can choose according to their requirements and comfort level. As we have a lot of welding techniques, it is wise to select the easiest and best techniques according to the person who learns it and according to the purpose.

People like to learn welding for many reasons and some want to learn it as it is a sensible and useful relaxation. People who learn welding for hobby make use of them for different practical daily activities like building mopeds, yard art, handy shop tools, repairing equipments just about their home. Welding is in fact a very much useful and rewarding hobby to be learnt and practiced as we get to handle a lot of modern welding equipment so easily unlike earlier times.

There are mainly four fundamental procedures of welding, which people commonly use these days. Oxyacetylene welders are the technicians who use a flame to melt the metal that is needed to be worked on and develop the weld pool. Then a welding rod will be inserted into the weld pool which is in the molten state to fill the weld.

In the stick welding process a welder will make use of an electrical arc to produce heat and what happens next is a flux is formed due to the heat and this is helpful in fusing the two metal pieces. This method by which an electrical arc is being used is known as Shielded Metal Arc Welding or widely known as SMAW. In stick welding, an electrode is the one which is used as the filler.

The process of MIG welding is also known to be as the gas metal arc welding process or GMAW. The Gas Metal Arc welding is a process in which an electrical arc to produce the welding heat that is required to produce the flux. This method has an extra thing called the shielding gas which is made to protect the molten weld pool. Then the material which is used as the filler is delivered through a wire feeder.

Then we have something called the TIG welding and this produces the electrical arc by means of a Tungsten electrode and also has a shielding gas.

Apart from these basic types of welding there are a lot more to know, learn and practice but all of them are for industrial uses and a hobby welder need not use those heavy machines. If you are turning out to be a hobby welder it is better for you to know that a welder machine is quite expensive and try making sure about the projects you are thinking about and get machines according to that- buying all the machines might not be a sensible decision. Oxyacetylene torches are the ones that are mainly adaptable and versatile of all welding methods and it is advisable to follow this method.

It is an undeniable fact that welding aluminum items calls for some professional expertise and special skills. Even welding enthusiasts who have past experience in successfully welding steel will find aluminum welding challenging. The reason is simple – it is difficult to feed aluminum wire which is soft. Furthermore, wire diameters and machine settings generally used for steel may not be appropriate for aluminum.

The truth is with some practice, you will be able to tackle aluminum welding jobs such as grills, railings, backyard furniture, boat docks and even decorative elements – using a compact MIG welder. Depending upon your needs, you can buy the right type of MIG welder.

A 115 volt wire feeder welder can handle jobs that range from 22 to 12 gauge and with moderate pre-heating, you can probably weld even up to 1/8″ thickness. The only precaution is the preheating should not exceed 250 degrees F maximum. You can also opt for a 230 volt machine which can weld from 22 gauge up to 3/16″. If proper preheating is done you can go up to 1/4″. If your application is broader range of aluminum thicknesses, then it is worth investing in the 230v machine.

However, it needs to be stated that a compact MIG welder of 115 volt and 230 volt models are in order only for occasional aluminum jobs. As regards heavy duty aluminum, you must buy a welder that has greater than 200 amps output.

The next question you need to address when selecting a welder is whether you want a continuous or tapped voltage control model. Please understand that a continuous voltage control model lets you set an infinite range of voltage within the rating of the machine. This facilitates your adapting the voltage to your particular applications and skill level. If you want to spend less, opt for the tapped control unit. This machine has a rotary switch with four or five fixed voltage choices. This model will be adequate for most applications.

As already stated earlier, MIG welding aluminum is different from welding steel and this also applies to shielding gas requirements. For aluminum, 100 percent argon is the preferred choice, whereas steel welding calls for a mixed gas or 100 percent CO2 gas. Of course, for this reason no special equipment is needed – your existing regulators and gas hoses can be used for both pure blends and mixed gases.

The oxide layer needs to be removed from the aluminum immediately before welding. The edges of the aluminum should be cleaned with a file. It is best to use a new wire brush that hasn’t been used on steel, and to brush in a single direction so the oxide is not rubbed into the aluminum.

Please know that all MIG welding on aluminum materials requires electrode positive polarity. If you are switching your wire feed welder between processes, do not forget to switch your polarity. You will certainly not succeed in obtaining good results attempting to weld on aluminum with a steel wire electrode.

There is a trick to properly loading aluminum wire into a wire feed welder and this comes with regular practice. As you are welding aluminum, keep the gun cable as straight as possible to minimize feeding restrictions on the soft aluminum wire. Ensure that there are no bends in the gun cable that may make the wire kink and feed poorly.

My Friend Pete takes a break from cars, and makes himself a “Computer Table”. www.swrnc.com or 972-420-1293

Of all the manufacturing activities, it is welding that is fraught with lot of dangers and certain precautionary measures are essential for safe welding. Some of the   grave risks that a welder encounters are the obnoxious fumes and gases, the blinding arc rays, the inflammable sparks and electrical shocks.

•    A welder must wear the prescribed protective clothing before commencing the welding work. Equally important is to wear protective eye and ear gears when welding/cutting.

•    Make sure you are fully equipped with all the safe welding protection accessories such as – welding-helmet preferably with auto darkening feature, welding mask, welding apron, welding jacket, welding gloves, welding shoes, welding goggles, welding booths etc.

•    Avoid breathing the poisonous fumes and provide for ample ventilation before commencing welding.

•    Welders should deposit the butane lighters while welding as welding sparks can lead to a conflagration.  Butane lighters are terribly powerful and when it explodes, it is as good as 3 sticks of dynamite.

•    It is essential to handle all compressed gas cylinders extremely cautiously and ensure they are tightly closed with caps on when stored. When compressed gas cylinders become empty, tightly the valve and also mark them ‘empty’

•    When lighting or shutting off a torch, follow the right technique and observe all the steps sequentially.

•    Make it a point to wear rubber boots and work from a dry insulated platform

– particularly if you are required to do arc welding in a wet area.

•    If it becomes necessary to weld in a confined space, you will have to take suitable extra precautionary measures as the potential risks are high.

•    As a welder, it is your responsibility to protect your fellow workers from the pernicious light rays of welding arc.
•    You must exercise utmost caution if you are required to splice different lengths of welding cable. Please ensure all the electrical connections are tight, secure and well insulated. Stay away from cables that are frayed, cracked or split.

•    Check to make sure that your arc welding equipment is installed properly and grounded firmly and is in perfect working condition.

•    Make sure flame cut sparks do not to strike the hoses, regulators or cylinders as flame cutting sparks have a tendency to travel up to even 40 feet.

•    Never use oil, grease or any inflammable material – if they come in contact with oxygen, it can cause instant combustion. Likewise, never use acetylene at pressure in excess of 15 psi as higher pressures can mean a terrific explosion.

Please know that almost all gas welding and arc welding fluxes are toxic in nature and can easily cause allergies to welders and others around. All welders must know the elementary lesson that the heat energy used for welding can cause untold damage to the welders, persons around and property in the vicinity – if allowed to extend outside the welding area.

The welding shop owner and the welding supervisor must set safety standards and lead by example so that the welders observe all the necessary precautionary measures and the welders are also educated about the grave consequences that any negligence can result in.

Experienced welding operators who want to start their own welding workshop are the ones mostly interested in buying secondhand welding equipments. Buying the right secondhand welding equipment is critically important as this is a business decision and entire future growth of the proposed workshop abjectly depends on this secondhand equipment performing well.

There are many different types of welding, but some are much more common than others. Besides, there are several factors that should influence your buying decision when you are in the market for used welding equipment.

You will have to decide on the brand of the equipment – Miller, Lincoln, Esab or Hobart from amongst the many. Should you opt for a multi process machine capable of TIG, MIG, Flux Core, and stick welding or buy different machines for each of the process. Would you want oxy-fuel cutting outfit or plasma cutter and more importantly, whether you need air compressor or electric grinders.

Many professionals opine that multi process machines are unwieldy and cumbersome and you should opt for it only if you have that type of regular work to warrant its purchase.
For your main TIG welding machine and MIG welding, you may visit e-Bay or Craigslist where you will find several bargain offers. If you have restricted floor space, you can opt for a foldable welding table that can be hung on the wall saving you a lot of moving space.

As regards electric grinders you can easily obtain one or two straight grinders as also 4 1/2 inch angle grinders along with a variety of consumables. If you have a regular workshop away from your home, then go for an oxyfuel cutting, welding, and heating kit. You will never regret this purchase.

It is strongly recommended that you have two argon cylinders – preferably owner cylinders and not leased ones.  Keeping a spare owner cylinder will provide you the required time-gap in getting your main cylinder refilled.

Please know that nearly 500,000 employees in the United States work in factories that do welding work. This means there is a lot of used welding equipments around for sale. Because of the wide choice for used welding equipment – people who are hunting for the equipment should do plenty of research before finally buying.

A useful tip for getting good deals on used welding equipments is to search the local Craiglist listings where you will come across some fabulous offers. However, if buying the welding equipments online, you must insist on seeing true pictures of the welding equipment – particularly if you are planning to buy an expensive item like a Miller Syncrowave 250 or 300.  If a seller refuses to provide a real photo, then negotiate no further and call off the deal.

There are several online auction sites where you can find some really good welding equipment. Of course, the most resourceful auction site is eBay. Then there is UBid that may not be as popular as eBay but it can throw some surprise offers. More importantly, when you buy used welding equipment on the Internet, check what kind of certifications and approvals the company that sells them has.