Archive for the ‘Aluminum Welding’ Category

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Choosing the right electrode for welding

Thursday, April 28th, 2011

There are many factors that you should consider before you choose the right electrode for welding. First you should consider the type of metals that are being used. You cannot universally use the same electrode for every metal you weld together.

What you use for aluminum and brass will not be the same as you use for steel. Next is the resistance to corrosion by the electrodes. This is an important property for the storage of electrodes. If you are buying electrodes in a bulk for the use of a long term project, you should defiantly keep this factor in mind. Next is the type of coatings that these electrodes would carry.

Electrodes may be consumable or non consumable. A consumable electrode may melt during the welding process and add to the strength of the weld. Therefore it would depend on the type of welding process you are using to join two metals.

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A note on Aluminum welding:

Thursday, November 11th, 2010

Welding aluminum can be done either with a wire feed welder or stick machine. All the general welding safety rules apply, and follow them can avoid dangerous accidents.

• Wear protective welding hood while welding aluminum. UV rays can be very harmful to eyes.

• Always wear welding gloves, long jeans, boots and welding jackets so that welders can protect their body from sparks and heat caused by welding.

• Always route the welding leads and cables from the welder to the steel so that nobody can trip on them.

• Always turn the welder off and put cords and leads safely away after welding aluminum. Clean up any tools and materials used in the project so they don’t become a hazard.

• Before inspecting the machine make sure that all the cords and welding leads are free of defects and that no bare wire is showing before welding aluminum.

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A View On Aluminum Welding:

Monday, October 25th, 2010

Welding of aluminum can turn out to be as a tricky task and it is usually saved for professionals. To learn the process and proper techniques of weld by following safety precautions it will usually take lot of your time. After learning the process of aluminum welding you can conduct this activity on your own.

While performing the task of aluminum welding you must check the surroundings of your work environment. Be away from electrical wires or outlets and keep your environment well ventilated. In addition to this one important point you must remember is, to perform the task by wearing gloves, welding helmet and by following other safety measures too. Do remember that your head should always be away from any fumes, even when you have worn a weld helmet.

Clean the aluminum that you are going to weld. Spray off the surface of aluminum with the help of electrical cleaner and then rinse it off with clean water. Dry up the metal once the dirt is clear. At the time of aluminum welding remember that this is the area where you are going to compress the pieces so as to prevent them from wrapping.

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How to protect yourself while welding Aluminum:

Friday, October 22nd, 2010

You can weld aluminum either with the help of wire feed welder or a stick machine. If you don’t follow safety rules it can lead to dangerous accidents.

• Always wear a protective welding hood when aluminum welding. Ultra violet rays created in welding process are very harmful to the eyes.

• While welding it is important that you wear thick leather welding gloves, long jeans, boots and a welding jacket to protect yourself against sparks and heat caused by welding.

• Clean the work area if there are any flammable items such as rags.

• Inspect the machine to ensure that all the cords and welding leads are free of defects and that no bare wire is showing before welding aluminum.

• Always turn the welder off and put the cords and leads safely away after welding aluminum. Clean up any tools and materials used in the project so they don’t become a hazard.

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Techniques of welding aluminum:

Thursday, September 30th, 2010

Aluminum welding is easier than welding steel. Several methods are used in joining aluminum via welding: mig welding, tig welding and using a stick electrode. MIG welding is a process that will require some post-weld touchups for a presentable finish. Mig welding uses an electrode of continually fed wire forming the base of the welds, which is also shielded by an inert gas or gas mixture. While using aluminum for mig welding, it is considered somewhat messy because you’ll need to use the spray transfer method in which the arc creates a spray of tiny metal beads.

TIG Welding does not require must post-weld clean up and finishing, and is therefore ideally suited to quick and easy welding of aluminum. Rather than using a fed-wire electrode, tig welding uses a permanent tungsten electrode that is not consumed by the welding process. You have to add any filler metal manually, making this process best suited to joints that can be achieved without additional metal.

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Everything you ought to know as to how to weld Aluminum:

Friday, September 24th, 2010

Safety First:

When welding aluminum, wear all needed safety equipments. You should wear gloves, goggles, hearing protection and a heavy apron so that you can protect your body from spatters. Wear eye protection equipment to protect your eyes from ultraviolet rays. Make sure your work area is well ventilated so that fumes can be removed when welding. For precaution purpose, keep your face away from fumes as far as possible.

Material preparation:

• Clean away all the lubricants.
• Remove aluminum oxide from the surface of the metal with the help of a metal brush.
• Do not use a brush that is used in other materials.
• While pre-heating is not compulsory, if you’re welding two pieces of different gauge aluminum, pre-heating can help prevent some problems.
• While pre-heating aluminum, it should not exceed 230 degrees F.

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How to weld aluminum in a safe way:

Monday, August 30th, 2010

Aluminum can be welded either with a wire feed welder or stick welding. To avoid injury, use these safety measures:

• Wear a protective welding hood while welding aluminum.

• It is important that you wear safety equipments like thick leather welding gloves, long jeans and boots and welding jacket to protect yourself against sparks and heat caused by welding.

• After welding work is over for the day, clean the work area as it can reduce the risk of fire caused by sparks.

• Always route the welding leads from welder to steel so that nobody can trip on them.

• Before a technician starts the aluminum welding process, ensure that all the cords and welding leads are free from defects.

• After welding work is over, turn off the welder.

• Clean up all the tools and materials used in this project so they don’t become a hazard.

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Aluminum welding and its uses:

Wednesday, August 4th, 2010

Aluminum welding is known as the most intractable alloy. These are done according to the grade and type of aluminum used. There are three types of aluminum where welding is done easily. There are commercial grade aluminum, non heat treatable alloy and heat treatable alloy. All these three contains some chemical which leads to easy welding. The first two types consist of pure aluminum and magnesium respectively. Where else heat treatable alloy contains copper, zinc, magnesium or silicon which makes the work of welding difficult. Due to copper you may find crack on the metal while welding.

These generally include Mig welding and Tig welding method during welding. For better result the latest technique used by aluminum welding is the combination of mig welding with arc welding. These welding feed the rod faster than other types of welding. This welds the metal quicker without stopping for brushing or grind. There are few factors which will affect aluminum while welding are the coating of aluminum oxide, conductivity and expansion of thermal and characteristics of melting.

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Strategies of Welding Aluminum

Friday, April 9th, 2010

Specialized welding in fact involves expertise & experience. A reasonably extensive-knowledge is necessary to become an expert. Many years of experience & skill are essential to master the art of welding. After understanding the basics, one can learn more intricate skills.

The initial and foremost thing is that one has to take safety measures. If not, unexpected circumstances may even prove to be mortal. Damage to the eyes is a prospect due to intense light ray that emerge from the course of action. As power is involved in positive cases of welding, death by electrocution is a prospect. Before initial welding, helmet has to be worn for protecting eyes, hair, head & face. Wearing protective gloves & clothing is a must. Still for those experiences in welding steels, welding aluminum can present fairly a challenge.

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A quick glance at the spot welders

Wednesday, March 10th, 2010

If you are planning to weld various sheet metals, spot welding would be the easiest method to accomplish your task. The spot welders are exclusively used for welding sheet metals which are typically in a thickness range of 0.5-3.0 mm. The welding process make use of two copper alloy welding electrodes which concentrates the welding current into a small ‘spot’ and also holds the metal sheets together. A small chunk of metal is formed as the current passes through the spot due to instant melting of the metal.  This completes the welding process. One of the main advantages of spot welders is that a large amount of energy is delivered at the spot in a very short time. This initiates quick welding without excessively heating the rest of the sheet.

The spot welding technology can be efficiently used for welding many sheet metal goods like metal pails. It is also possible to use spot welders for welding aluminum alloys. But while spot welding aluminum, the welding current required should be three times higher owing to the higher thermal conductivity and electrical conductivity of the metal.

You can find that the spot welders are utilized universally for welding the sheet metal forming a car. Thus the automobile industry gets the major benefits of spot welding. Yet another advantage of spot welders is that it can be completely automated and many industrial robots are actually spot welders.

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