Posts Tagged ‘welding process’
Monday, May 30th, 2011
During the times of world war one; the welding process saw a steep surge in their demand. This is because welder the various welding processes were used and required in the machinery that was a part of the war. Ships were made out of the welding process as well as guns and other such equipment were manufactured with the help of welding. Around this time, welding was powered with the help of DC current alone as AC current was not discovered as of yet. However, later on, with the advantages of the AC current over DC, several machines were manufactured to cater to the AC current need of the welding process. This was also because AC current was much easier to handle than he DC current as it could be stepped up or stepped down to suit the need of the project. Thus most machines today also come with a AC current power. This helps to reduce the power consumption of the unit.
Tags: AC & DC Arc welders, welding, welding process
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Friday, May 27th, 2011
This is a form of welding where the metals are joined without actually melting them. These are also known as solid state welding process. In this process, the metals to be welded are brought together under high pressure and strong vibrations are passed through the metals. Ultrasonic acoustic vibrations are applied to the metal locally which creates the weld between the two welds. This method is very effective in joining metals that are not similar. Also with the use of this method, there is no necessity of bolts, nails or adhesives necessary to hold the metal pieces together. A sonotrode is made use of in this form of welding. The sonotrode will apply the high frequency ultrasonic vibration that will cause the metal pieces to join together under high pressure. Due to the absorption of the vibrations, the thermoplast will melt locally causing a joining of the two metals. High pressure dispersion of the surface oxides can also be attributed to the joining of the metals.
Tags: TIG Welders, welder, welding process
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Thursday, May 26th, 2011
Spot welding is a very common form of resistance welding. In this welding process, sheet metals that are up to 3mm thick can be joined. The reason why this welding process is very effective is because of the concentrated area of welding that is taken in when the welding process happens. This method makes efficient use of energy and does not waste energy by making long welds. Welding is done in spots, as per the name, which forms hard thick joints which are very effective in holding the two metals together. This method of welding makes it easy to work with limited workspace and also increases the production rate. There are no filler elements required in this form of welding and the whole process can be easily automated. It should be remembered that the weld strength of this process is comparatively lesser than the other welding methods and hence this method is only suitable in certain applications.
Tags: resistance spot welding, spot welding, welding, welding process
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Tuesday, May 24th, 2011
Resistance welding is a welding process that is used to join two or more metals. In this process, heat is generated with the help of the property of resistance between the two metals. When the two metals are in contact, a high current of 1000 A to 10,000 A is passed and heat is generated by the resistance property of the two metals. This heat will cause the metals to melt and small pools of molten metal will be formed. When these pools are cooled down, they form a hard metal bond between the metals which would create a perfect weld. This welding process is very efficient and it causes the least amount of pollution. However, the cost of equipment for resistance welding is quite high. There are many processes that are included under resistance welding. Spot welding is a very famous form of resistant welding that makes use of this welding process to make clear concentrated welds.
Tags: resistance spot welding, welding, welding process
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Monday, May 23rd, 2011
The primary process of welding is the creation of an electric arc between the electrode and the metal. This arc should be stable and maintained between the electrode and the metal. The arc is created when electricity is passed through the electrode. A consumable or a non consumable electrode can be used in the process of welding. The welding process melts down the metals and the two melted metals join in their molten form to form a slag. When this cools down, the metals are joined together where they were melted at and become one whole structure. This creates a strong bond between the two metals that does not yield to pressure or wear and tear. In case of a consumable electrode, the electrode might melt and form a part of the weld. This will make the join even stronger between the two metals. There are many different types of welding used for different purposes.
Tags: TIG welding, welding, welding process
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Friday, May 13th, 2011
As the name suggests, the welding is done with the help of an energy beam. The beam of energy can be laser or an electron beam. This is a relatively new process that has gained a lot of popularity because of the high efficiency and the less amount of time that is consumed in the welding process. When talking about a laser beam, a highly focused beam of light is used for welding. In an electron welding setup, the metals to be joined is placed in a vacuum and a focused electron beam is used for welding the two pieces together. Both the laser and the electron beam have high density and this makes a deeper penetration possible. The processes are extremely fast and also can be automated easily. This makes the processes good for increasing the production rate. The initial costs and the cost of such equipment however are some drawbacks which has hampered its entry for regular use in the market.
Tags: welder, Welders, welding process
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Wednesday, May 11th, 2011
When we consider the history of welding, we should consider the history of joining metals. This is because welding is essential the joining of two metals. This process dates back several millennia. As far as the Bronze Age goes, there has been always joining of metals to make structures or sculptures. It was prominent in Indian architecture as there have been many monuments that have been made out of metal and joined through the ancient forms of welding. The usefulness of welding has been quite prominent throughout history. Weapons, plates spoons etc. were all made from some form of welding or other. Nowadays through time, there have been a lot of changes and improvements in welding. This has been brought about due to the need of welding in our everyday life. Therefore the process of welding has become much more sophisticated and on many levels easy to handle than most other metal working processes.
Tags: TIG Welder, welder, welding, welding process
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Wednesday, April 27th, 2011
The shielded metal arc welding is also known as the manual metal arc welding. A consumable electrode is used in this process. The consumable electrode is coated in flux and is used to lay the weld.
The electric arc is formed between the electrode and the metal to be joined with the help of the current that is supplied from the electric welding machine. The flux coating of the electrode will degenerate and vaporize. This will result is a gas that will protect the area of weld and a slag that will help to join the two metals. This welding process is suitable to be used outdoors.
This welding process is used for cast iron stainless steel as well as welding steel. A welding power supply is provided by this setup that will provide the constant power supply. Also provided with the setup is an electrode holder and a work clamp.
Tags: arc welders, arc welding, welder, welding process
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Tuesday, April 26th, 2011
Underwater welding is carried out mostly in ships. This is a process of welding where the process is carried out submerged in water. This is most commonly used in ships as the hull of the ship might require frequent repairs in the operation of the ship on the sea.
If there are holes in the hull or the body then the water will fill in the ship that would cause damage to the ship. Therefore repairs on the go have to be taken care of while the ship is still sailing.
Underwater welding will help to fix the ship promptly and save the trouble of docking the ship and then repairing it. This welding procedure however will require extremely bulky equipment and also specialized workers to carry on the welding process.
However this process is relatively much cheaper than setting up offshore equipment that would be otherwise required to repair the ship damage.
Tags: Welders, welding, welding process
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Monday, April 25th, 2011
There are different types of electrodes that are used for the creation of electric arc. These electrodes should be of good quality if they are supposed to be of any use.
If they are not of good quality then they can easily spoil the whole process of welding. These metal electrodes consist of chemical wires that are covered in chemical coating. The arc of for welding is stabilized by the virtue of the structure of the electrode.
There are various factors that determine the type of welding materials that are used. The first factor that is to be considered is the type of metal that is being used for welding. The machine being used and the work conditions as well contribute to the type electrodes that is being used for welding.
This means that you cannot use the same electrode you are using to weld steel that you would normally use for aluminum or brass.
Tags: arc welders, welding, welding accessories, welding process
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