Archive for November, 2010

Know about welding power supply:

Tuesday, November 30th, 2010

Power supply, it is essential for all machines, and in welding it is definitely needed because it provides electric current to perform welding. Welding is a process that requires high current around 80 amps. Constant current and constant voltage machines are the two classifications in welding machines and a constant current machine vary its voltage and the constant voltage machine vary its current of their outputs in order to maintain a steady current and voltage respectively. The modern welding machines use internal combustion engines to convert mechanical energy into electrical energy and you can build a switching power supply with the advent of inverters known as inverter welding units.

The infineon IGBT welding machines are more efficient and have better control than other types of non-inverter welding machines. And with these machines, the users can produce the desired voltage or current. This machine has power control features and overload protection features so that you need not worry about high voltage or current problems.

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Are multi purpose units efficient?

Monday, November 29th, 2010

As the name indicates, it is a multi process unit that can perform different welding operations and a complete welding package. You can do anything in welding by using this package and it is designed for weldor’s convenience with greater portability. You can do all types of welding such as MIG welding, TIG welding and stick welding with a smooth and clean finish. With the help of this unit, the users can do both welding and cutting. It is typically used in spot repairs, general repair, motor sports and fabrication.

It does not occupy much space and fits into your space and budget. It has self explanatory control panels and each model have separate wire feeds. It can be used in both indoors and outdoors and you can perform multiple jobs at the same time. You can acquire high duty cycles with quality weld and both beginners and professionals can use this machine. Multipurpose units are more efficient than other welding machines because you can do the welding process as efficiently as possible.

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Types of tools required for welding:

Friday, November 26th, 2010

If you have a welding area in your workshop you can think of creative ways of doing a project. Working with metal can bring in durability and stability in your creations. It is very easy to learn the art of welding if there is proper equipment. Knowing about tools helps in starting right away.

Safety Gear:
Welding can lead to injury, burns and blindness. To avoid this, it is important that welders purchase all the necessary safety equipment before you obtain any tools for your home workshop.

Here is a list of the safety gear that welders should wear before welding:
• Always wear 100% cotton or denim pants
• Leather apron
• Lightweight welding jacket
• Heavy duty welding gloves
• High top leather shoes
Safety glasses
Welding helmet

Welding Rig:
Two major types of welders available are torch welders and arc welders. Torch welders cannot be used by beginners as it involves open flame which can cause hazardous combustion if improperly used. Arc welders are available in different types.

Metal Cutter:
It is important to have tools that can cut metals. Different types of carbide saws, plasma cutters and torch cutters are available.

Metalwork Accessories:
If a person wants to finish metal, a variety of accessories are necessary. Some common tools a welder will require are: a ball peen hammer, a grinder, a buffer, a set of metal files, a chisel and a chipping hammer.

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Factors to consider while choosing welding attire:

Thursday, November 25th, 2010

If you want to maintain safety during welding, wear the correct attire to indulge yourself in a protected welding process. It is important that you choose correct welding attire before welding. Following tips will help you in selecting right attire.

• Protect your eyes from sparks or fumes. Always wear safety glasses while welding.

• Buy flame resistant clothing. You can find this type of clothing at hardware stores or where you bought your welder.

• Wear high-top leather boots.

• Buy a pair of leather gloves that have a long cuff extending to the elbow.

• Buy a welding helmet or hood that is comfortable and not too heavy to wear. Your shield shouldn’t be too dark for you to see out or too light to keep the rays from the welder from damaging your eyes.

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What is the advantage of using portable welders?

Wednesday, November 24th, 2010

Welding has been developed in many aspects and many new welding machines have been introduced. The new welders that have been in the use now are far better than the old machines that were used a century before. It was a time where the weldors use the heavy welding machines for their work and in one or other way, it make them feel inconvenient. Today, it has been totally changed; the welders now in the market are very user friendly. Let us see some of the advantages of it.

• It is user friendly and provide convenience for the users is all aspects of welding.

• Can carry to any place you work .

• You don’t need to run for wires and it makes the repair easy in the field.

• It can fit into any settings with unique combination of amperages and features .

• It is simple and compact and you can obtain the finished weld so that there is no need for you to clean and dress it.

Now that you know the advantages of a portable welder, Decide which type of welder you want and enjoy the features of the welder you buy in a most efficient way!

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Difference between AC and DC Welding:

Tuesday, November 23rd, 2010

AC Welders use electric voltage directly from an alternating current outlet. DC welders use the same AC voltage but convert it into direct current voltage.

• Both AC and DC Welders are shielded metal arc welders but differ in the electricity they use. Both the options are available in one machine.

• DC welding electrodes can be used only in DC machine.

• AC welding can weld magnetized metal, while DC Welders make a cleaner weld.

• AC Welders are cheaper and can weld thicker metals, but even thinner metals can be welded using DC welding. An AC welder is fine for most home project jobs, but for regular purpose, you will require both AC and DC at same point.

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Factors to consider before buying portable welders:

Monday, November 22nd, 2010

If you want to buy portable welders you have to consider certain factors. Some of the things to consider include the type, voltage and cycle time. This article will give you a few tips for buying portable welders.

Type:

When buying portable welders you should consider the type you want. Two types of welders are available in the market like MIG and stick welders. Stick welders are less expensive than MIG welders.

Voltage:

Voltage required for this type of welders is 110 or 220 volts. Welders with higher voltage will have more power.

Thickness:

You have to consider the thickness of material also. If the material is less than 3/16 inch, you can go in for 110 volt welder. For thicker materials, go in for 220 volts.

Cycle time:

Cycle time is nothing but the amount of time that you run the welder before it is turned off and given rest. Different portable welders have different cycle times. Always choose one with the lowest time so that you don’t have to spend a lot of time waiting for the welder cool off.

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A note on portable welders:

Friday, November 19th, 2010

When choosing a portable welder, buy a welder that can do both shielding gas and flux core wire welding. Go in for a model that has highest amperage and is available in your budget. Modern portable welders are light and compact and can be taken out in the field for repairs. A portable welder can weld any type of material with the help of welding.

Portable welders work on either 115 volt or 230 volt power supplies. When choosing a portable welder, find out what type of repairs it can be used for. MIG welders can repair mild steel and sheet steel, while tungsten inert gas can repair aluminum and chromium molybdenum steel. Portable welders come with TIG capabilities.

Portable welders are easy to operate and most of the welders can do quality welding work as it requires minimum instruction and supervision. This is a valuable and affordable option.

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What to look for while purchasing a wire feed welder?

Thursday, November 18th, 2010

When looking for wire feed welder ensure you purchase the best wire feed welder possible. Wire feed welders come in various types, each used for specific purpose. Professional models operate on 230 volt current, to home-use models operate on 110 volts. When purchasing a new wire feed welder make sure that you pick one that uses both a shielding gas as well as flux core wire. Wire feed welders are easier to use than stick welders. New welders are able to do welding work with minimum practice and instruction. A wire feed welder is rated by the amperage it operates on. When picking a new wire feed welder, purchase a welder that has highest rated amperage. For home use, go in for 140 to 160 amp welder that fits most users’ need. Owing a wire feed welder allows the beginner to repair many broken items that would need to be taken to a professional.

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Portable welders – Protecting the Eyes:

Wednesday, November 17th, 2010

When you have a welding shop, everything is arranged properly, all the tools are kept properly in their respective places. It becomes easy for a welder to work. But if he is out in the field, everything is not arranged as per welder’s requirement which can lead to accident. To protect against accidents while using a portable welder it is important that welder wears protective equipment.

The most obvious danger of welding – whether with an oxyacetylene torch or with a MIG or TIG welding, is the risk of eyes. So the first safety precaution should be protecting your own eyes and eyes of others. The best way to protect your eyes is by wearing welding helmet. Welding helmets come in standard or auto-adjusted versions.

When using portable welders, you have to protect your eyes as well as of others. If you are welding at home or on a farm, you have to protect the eyes of animals as well, who will look at the welding arc and will not understand to look away, and thus experience arc flash. When possible, move animals from the area, if possible set up opaque welding curtains around the work site. Always keep an extra helmet if any of visitors want to talk with you urgently while welding.

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