Posts Tagged ‘types of welders’

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Solid state welding

Wednesday, May 25th, 2011

This is a welding technique that does not melt the metal to make the weld. This type of welding is normally done to make electrical connections out of aluminum or copper. This is almost similar to resistance welding but instead of heat that is used to melt the metals, the energy is provided in form of vibrations. The metals pieces in high pressure join with each other under the influence of the vibrations. When plastic materials are joined like this, it should be kept in mind that both the materials should have the same melting points. Also, when joining plastics, the vibrations are introduced vertically under high pressure. Examples of solid state welding can be ultrasonic welding and explosion welding. With the metals not welding under heat, there is no wastage of metals and also the weld is much cleaner without any marks or deformation in the line of weld as the other forms of welding.

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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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Things to know before you purchase a welder

Friday, April 22nd, 2011

You might have decided to purchase a welder for yourself. There are a couple of things that you should remember before you purchase your welder.

There are different types available in the market. To make your choices clearer you should be first clear with the purpose of buying a welder. Are you pursuing welding as a hobby or are you planning to go professional?

The various applications that the welder can handle are dependent on the built in features that come along with the welder. You should also keep in mind the amount of power that is required to work the welder.

Do you have access to the required power necessary for the arrangements? If you don’t then you might want to purchase an additional power kit. Also you should consider if the welders are portable.  If they are portable they can be moved along with you in your work area. This would make your work simpler.

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The most significant components and fittings of TIG welding

Friday, January 21st, 2011

Most of the TIG welding equipment consists of gas device with controller and many of the element present they are welding torch, power cable, tungsten, electrode, gas nozzle this are the different types of elements is present, and also welding power source, motionless gas cylinder this are the elements present in this process.

Most of the welding torch consists of cooled air or else water if the welding current is more than 150 amps the air or water gets cold.

The filler rod is mainly used for heavier welding metal and the metal must have similar chemical of metal piece. The filler rod comes in two ways they are either in straight fixed lengths or coils.

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Importance of Welding Helmets and It’s Types

Thursday, January 20th, 2011

A person who is working in the field of welding or just examining the welding process needs to wear a welding helmet .The reason why welding helmets are essential is because of the bright light given off by welding. Without taking safety measures, this light can factually burn the insides of your eyes and cause temporary or permanent blindness. Part of the reason is that mainly in dark places, the eye cannot adjust to the change in brightness fast enough to prevent damage. A good welding helmet not only protects you from rapid sparks, but also shields you from the extremely brilliant welding arc.

Today welding helmets have changed significantly. While they look quite a bit unusual today than they did years ago, you can still find two main types of welding helmet:

  • Passive
  • Auto-dimming

Whenever you picture welding helmets, you’re almost certainly thinking about manual, or passive as it’s also known. The main advantage to these passive helmets is that they often cost less. More recently, auto-dimming welding helmets have become more popular. These helmets, like the conventional manual ones, are a part of metal and a piece of glass. The auto-dimming helmets come in two types, some use infrared viewers whilst others use electricity to dampen the glass. Both use electricity.

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Inverter Welders to save power

Wednesday, January 19th, 2011

The Inverter Welders are used by many experienced welders for various reasons, the main reason being the amount of power they generate when plugged into a normal household current. This type of welders is also very portable to carry to all places. It can be carried with just one hand and allows you to move faster and get into smaller places where your normal welder would never easily get in.

One of the amazing facts about the inverter welders is the deal of flexibility to weld in places where you don’t even have 220v power. They are not vulnerable to low quality power so that you should be fine running them off any type of generator. There should also be a pre power check done when you dealing with a non operational inverter welder.

Inverter welders are the one which suits for all the mig welding work and are convenient and portable. They also have 12lb roll capacity with optional drive rolls. The disadvantages are that inverter welders use high tech electronic components which are used in conventional welder which increases the cost a bit more for the same power, and need to be treated more carefully as it will not be as strong as the other welders.
These welders are used in general repair, automotive, motor sports, agricultural and more. Therefore, inverter welders can save you a lot of money on power bills over time. However it is wise to keep both traditional welder and inverter welder as you might find situations to use both.

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A Guide Towards Magnetic Rotating Arc Welding

Thursday, December 30th, 2010

Magnetic rotating arc welding is also named as magnet arc welding or magnetically impelled arc butt (MIAB) welding that is developed in 1970’s. It is an arc fusing method where an arc is made between the punched ends of pipes and pushes around the fuse bond by a magnetic field, trailed by an upsetting operation. In general, the process is a combination of forge and arc welding with a gas protecting operation added on.

When the arc is created, a magnetic wind around the joint resists the arch that drives it around the boundary of the piece. The arch dashes around the piece at a rate near to 50 meters per second. In this pace the bend appears as like it is a ring of light amid of the pieces.

Once the arch has dashes around the piece for the particular period of time, the two parts are pushed together to weld them. This procedure is becoming very popular, when it comes to mass production environment. The whole method is fast, can be mechanized and needs comparatively little power than other kinds of welding. The pieces don’t have to be cylindrical.

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Methods Utilized To Perform The Weld

Wednesday, December 29th, 2010

The welding engineer or a welder must not only settle on the process of welding but they must also decide on a method for its effective application. Following methods are utilized to perform the task of welding, cutting and brazing operation:

Manual welding: welder is obliged to manipulate the entire process of weld.

Semi automatic: filler metals are added automatically and all other operation is completed manually by the welder.

Machine: here the process of welding is done mechanically under the surveillance and correction of a welding operator.

Automatic: here the process of weld is performed repeatedly by a machine that has been programmed to do the complete operation of weld without having any interaction with the operator.

Automated: operations are executed repeatedly by a robot or by other machine that is programmed gymnastically to do a range of processes.

At earlier days, emergence or usage of machines was not much into the picture. But as of now many weld operations are performed with the help of required machineries.

Today for each weld technique various torches and guns are made available so as to get the desire results on weld metal. There are some weld techniques which still asks for manual application so as to give out desired results.

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Types of Automated Welding Process

Monday, December 27th, 2010

“Automated welding” as the name says is done automatically or by machine. This process is divided into two categories:

A) Fully automated welding process
B) Semi automated process

Both the processes are same up to certain extent as they have automatic mechanical component that allows them to fuse a piece of metal. These procedures are computer oriented that provide them their controls over operations, this mechanism usually called their controller units.

However, there are some differences between them such as; when it comes to fully automated welding process, it needs minimum human interface to perform its functions. On the other hand, if it is the semi automated welding process then it requires great amount of human involvement to get the welding job done with accuracy. Fully automated process can fuse at high speed that is not possible manually. These machines have the capacity to repeat the procedure at very fast velocity and their repeatability over & over again provides them supremacy.

Semi automated welding procedure is reliant on individual interface. This operation requires the operator to do quality inspections or check for error if any. This process must have a welder to carry out the task.

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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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