Archive for March, 2011
Thursday, March 31st, 2011
Though welding is a process that looks complicated, it only needs patience and basic understanding of few welding rules to master the technique. There are many types of welding process that are carried over but TIG Welding has its own set of uses and advantage that cannot be compensated by any other methods of welding.
TIG welding is a process that offers a lot of control over the welding process. Technically we can say that this is a process that uses a non consumable electrode which is known to be the tungsten electrode. One of the main area where this technique is widely used is in welding process to weld stainless steels as well as few other non ferrous metals like that of aluminium, magnesium in addition to copper.
When it comes to the different types of TIG Welders we can basically divide them into five different types. They are power I-TIG 200, power TIG 200 DX, power TIG 225 LX, power TIG 250 EX and the power TIG 315 DX.
Tags: TIG Welder, TIG welding, welder, welding process
Posted in Tig Welding, Welders | No Comments »
Wednesday, March 30th, 2011
Choosing the best suitable welding helmet is as important as choosing the right electrode for your welder. When you are getting ready to wed, you will have to make sure that you are well equipped with all the safety gears and other precautionary stuffs available immediately when you need them. Though you are a practiced welder, you will have to take all necessary steps to take care of your eyes and face especially from the harmful fumes and gases.
You have hundreds of welding helmets to choose from, they vary from sizes, pricing and the level of protection that they give you. You will have to see the features of the helmet rather than seeing its rate. Never choose a helmet just because it is cheap. Always think about your safety and get the one that you will need.
The best out of the recent models are the auto-darkening welding helmets, you could read about their uses before you buy and then choose them. Auto darkening helmets gives you a liberty of wearing them on even when you are setting up the weld and hence your face and eyes are completely protect even in case of any accidental sparks coming out of the welder.
Tags: welder, welding accessories, Welding Helmet, welding safety
Posted in Welders, Welding Helmet | No Comments »
Tuesday, March 29th, 2011
We must have heard about stuffs working with plasma but, what is this plasma exactly? Plasma is the 4th state of matter. It is produced by passing inert gas around an electrical discharge. The gas is blown out at high speeds through the electrical arc and this gas is superheated to the plasma state.
There are many methods that most welding machines that employ plasma use to create the plasma. The most common use of plasma is in plasma metal cutters. Here the plasma is concentrated with the help of a nozzle onto a point that will help to cut through the metal. This metal is much more efficient than the conventional welding methods.
Also this method can be used to cut through layers of metal with ease. Most metal cutters from all over the world today are switching to plasma cutting methods because of its efficiency and its reliability to produce neat cuts when compared to the traditional cutting methods. There are portable plasma cutting methods that are available for the similar purposes today. Plasma cutters are one of the most efficient as well as quick methods to cut metal sheets of thick or thin breadth.
Tags: plasma cutter, welder, welding machine
Posted in Plasma Cutters | No Comments »
Monday, March 28th, 2011
When you are setting up a welding setup, you should make sure that you have safety equipment also ready. The most major accidents happen in welding because of the lack of safety equipment. The process of welding is relatively simple but the risks that are associated with welding in terms of safety is high. There are always molten metal pieces flying around that could cause injuries. Also looking directly at the welding arc can lead to defects in vision as well as blindness. The following welding equipment is essential while welding.
Welding gloves- protects the hands from the arc as well as sparks. These gloves are also eclectically insulated to prevent from electrical shock.
Welding shield- protects the face from the arc and from sparks. Also the shield has a tinted glass attached through which the work is viewed. This prevents the damage to the eyes.
Insulated boots- This cuts of the body from acting as an earth so that the current does not flow.
A fire extinguisher should also be always kept at the work place to prevent any accidents.
Tags: Arc Welding Safety, welding, welding accessories, Welding Equipments, welding safety
Posted in Arc Welding, Welder Accessories | No Comments »
Friday, March 25th, 2011
There are many protective gears to safeguard the welders while they are at work but it happens that a lot of us don’t care much about using the protective gears properly or sometimes get exposed to the harmful Fumes and gases let out during the process. Here are a few points to know about these fumes and gases…
During the arc welding process you will get to sense the most compounds like manganese and silicon. Apart from these the other compounds that are found in the electrode or in the base metal may also be found in the fumes.
These fumes are likely to do a lot of medical complications in a normal person’s body. Manganese is one of the elements that come out through the fumes and overexposure to this will affect the central nervous system. When the central nervous system of our body is affected it results in poor coordination, complexity in speaking in addition to shivering of arms or legs. The saddest part of this condition is that it is considered medically irreversible and hence avoiding these harmful fumes with proper usage of protective gears becomes important.
Tags: arc welding, Gas Welding, Welders, welding process
Posted in Arc Welding, Gas Welding | No Comments »
Thursday, March 24th, 2011
Just like any other works, welding also has its own probability where accidents happen. Most often accidents happen because of the improper precautionary steps taken by the welders or when it happened due to the instrument fault.
One of the accidents that happen during the process of welding is Electric shocks. The primary shock is a condition when the primary voltage shock – at 115 volts to as high as 600 volts passes through the victim’s body. This Electric shock is even dangerous than the much greater voltages.
A person can experience a primary shock if he happens to get in contact with touch a lead or other electrically hot element inside the welder. Especially when the body of the victim stays in contact with welder case or other grounded metal with the power to the welder. You can identify a grounding lead in the input power cable when the input power grounding lead has got green insulation or when it has got no insulation.
Tags: Welders, welding process, welding safety
Posted in Welders | No Comments »
Wednesday, March 23rd, 2011
The welding gun is single most important component when it comes to welding. Without which welding becomes absolutely impossible irrespective of what kind of welding technique you pursue. Hence much care should be directed towards the welding gun when it comes to maintenance. The wire feeds through to reach the contact tip or nozzle which allows the welding arc to weld the pieces together. It is very important that the wire feeds through smoothly and comfortably. Any obstruction will cause the arc to behave inconsistently and erratically which in the end results in poor welding and wastes materials used for welding. It is necessary to have a constant arc voltage to reduce spatter.
The erratic nature is usually a result of wear and tear or dirt issues involved with the welding gun. Thus the welding gun should be thoroughly checked and maintained regularly. If the factory is located in a dusty area such as in rural ones, there are more chances of dust entering into the workshop and accumulating here and there disrupting our work by covering the equipments with dust. For this reason alone, it is important that the workshop is built with concrete floor. The drive rollers of the wire feed mechanism often gets covered with dust and spatter particles which are mostly metallic by nature. These residues work its way down the gun cable and into the liner. And over a period of time the internal resistance increases by which the wire will fail to feed the welding gun. It is important that you regularly maintain your equipments to avoid all these issues.
Tags: MIG welders, MIG welding, welder, welding accessories
Posted in Mig Welding, Welders | No Comments »
Tuesday, March 22nd, 2011
It is important to have the best of quality equipments and immense knowledge in welding along with at most concentration when we are working with welding applications. Selecting proper engine driven welding generators, plasma cutters and other repair tools helps you to prevent downtime by fixing repair works right at the first time.
Equipment repair is adds up to your vows more compared to the complications you encounter while you weld. Every minute your machine turns down is a minute of lost time and minutes turn to hours when servicing those machines. Immense knowledge and experience in welding enables you to estimate the right kind of tools you always would need for the job and helps you to reduce downtime drastically and finish off the work quickly. At the end of the day your intelligence and quality of equipments predicts the outcome whether it’s a profitable one or not.
In order to finish off the field repair there are five basic steps you need to follow;
1. Cut out broken steel with Oxy-fuel, Plasma or Carbon arc Gouging. This is the initial step when it comes to field repair. Most contractors have oxy fuel equipments for cutting, brazing, soldering, and preheating welding surfaces
2. Match and cut replacement steel. Match your equipments based upon their strengths and replace them. Cut your steel to its required size.
3. Preheat to eliminate cracking. Fill the replacement steel to find irregularities and check its fitting. After achieving proper fit, preheat the surface with oxy-fuel equipment.
4. Electrode Selection and Welding Technique. Mostly stick welding technique is preferred.
5. Select your welding system. This factor depends upon the electrodes you have chosen in the previous step.
Tags: plasma cutter, stick welding, welder, Welding Equipments
Posted in Generators, Plasma Cutters, Stick Welding | No Comments »
Monday, March 21st, 2011
Out of all welding methods, Stick Welding or the shield Metal Arc Welding is the most adaptable one which is also versatile. A beginner can also easily handle a stick welder if practiced properly within a short period of time. Just like any other welding techniques, the shield metal Arc Welding also has its own troubles. Here is a list of the most common ones and they are actually easy to handle and identify.
Spatter is one of the common types of imperfection which will make the work piece look little messy and is something that is pretty pricey to clean it out totally.
Next trouble will be the Undercutting. This is also something to do with the look of the work piece as it will change its appearance and will weaken the weld that you have made.
Wet Electrodes is a problem that you can notice when you see it the arc is erratic or just rough. Always keep your electrodes away from any pollutants and water to avoid this complaint.
Cracking, this is the most common complaints encountered especially when there is high carbon or high alloy content.
Tags: Arc Welder, stick welder, welding
Posted in Arc Welding, Stick Welding | No Comments »
Friday, March 18th, 2011
The stick welding or the shield metal arc welding (SMAW) is one of the most used methods of welding techniques. We call SMAW as stick welding just because of the shape of the electrode that looks like a stick, which is responsible for the crust formation of the weld. When you want to make sure that your weld must turn out to be the perfect one, there are five important things that you will have to keep in your mind and welders call it as CLAMS. The full form of this jargon goes like this…
C – Current setting
L – Length of arc
A – Angle of travel
M – Manipulation
S – Speed of travel
These five points are the stuffs that you will have to take care off while carrying out the welding process, if you need that perfect weld. Most importantly, a welder must be ever ready to face any kind of disturbance or mechanical malfunctions. Be calm and learn from the mistake you make and never be in a hurry while you perform the task. Always keep yourself well equipped and protected with proper protective gears to avoid any accidents.
Tags: arc welding, stick welding, welder, welding process
Posted in Arc Welding, Stick Welding | No Comments »
Loading ...
