In order for the MIG welders, Arc welders, Stick welders and TIG welders to perform a good hard surfacing or to do an overlaying operation, then a welding procedure has to be done. The welding process must be related to a certain part that is surfaced, as well as to the composition of that part.
The multiprocess welders should know which welding process needs to be used and which method to be applied. There are also several operations that need to be done before the welding such as cleaning, undercutting, etc.
Stick welders, TIG welders, Arc welders, and MIG welders should also be aware of the preheat temperature, as well as about the necessary techniques that need to be done. For example, they have to be aware of the hardsurfacing pattern, the welding wire method – waving or beading, as well as the adjacent beads interface and the post-welding operations – peening and cooling.
The Arc welders,
The TIG welders, MIG welders, Arc welders and Stick welders are pleased that the American Society for Metals Committee on Hardfacing has organized a hardfacing alloys classification. Thanks to that, the multiprocess welders can recognize five main groups of these alloys, where the division is based on their alloy content. We already presented group 1 – the low-alloy steels with the main alloying element in being chromium and their two subgroups. The multiprocess welders should also recognize the other four groups, namely:
Group 2 – these are the alloyed steels with higher content. The group also has two subgroups. The first one has chromium being the chief alloying element that has total alloy content of 12-25 %. Some of these alloys also contain molybdenum. The second subgroup has molybdenum as the principal alloying element, yet some of them also contain chromium. MIG welders, TIG welders, Stick welders and Arc welders know that the alloyed steels from thi
All multiprocess welders know well that there is no one standard method for the classification of the hardfacing alloy and for the specification of the different weld rods, welding wire and electrodes. In fact, as TIG welders, Stick welders, MIG welders and Arc welders know well, most of the hard facing electrodes which are available cannot be set under the most used specifications.
Most of the suppliers of filler metal are offering data setting classes and categorize their products into these classes. Some of the suppliers also offer information on how specific products can be applied and used in the different industries. In this way the multiprocess welders will know when and how to use them.
Like many of the Stick welders, TIG welders, Arc welders and MIG welders know, the American Society for Metals Committee on Hardfacing has established the best possible classification of the hardfacing alloys. According to that classification, the multiprocess welders can spot
TIG welders, Stick welders, Arc welders, and MIG welders use a special classification system in order to organize the different types of wear and to name the metal deterioration processes that change the welding wires and metal surfaces.
We have already discussed the processes of abrasion, thermal shock and impact wear. Now will be presented the rest of the surface wear types that are easily recognized by the multiprocess welders:
Erosion – this process of wearing away is known to the Stick welders, TIG welders, MIG welders and Arc welders as destruction of metals and of other materials, caused by the abrasive action of water that carries abrasive materials. Very often, this type of wearing hits the pump parts.
Stick welders, MIG welders, TIG welders, and Arc welders are well aware that the wear or the so called deterioration of the surfaces is problem in many industries, including the welding industry. The wear of the welding wire and the filler rods, as well as all other materials used in the processes that multiprocess welders apply is the result of erosion, impact, abrasion, oxidation and corrosion.
Sometimes the wear is due to a combination of all those processes. The effects left from the wear can be repaired by the TIG welders, Stick welders, Arc welders, and MIG welders when they apply welding. When the multiprocess welders use special welding filler metals,
Every commercial welder knows that the storage of electrodes is very important when working with welding materials and performing a certain welding process. In the stick welding the commercial welders and the industrial welders are using rods.
These are welding electrode rods which are covered with flux. During the Second World War it was discovered that the coatings on the filler rod make the weld better and stronger. It is a fact that in the past on the production sites and on the ships, the bare metal rods were used in flat position.
The rods were stored outside and were not taken care of that much. As they were stored in the open air, the rods were often covered with rust and a welding made with this rod turned out to be stronger and better. The people who were learning how to weld and experimenting with new methods made a discovery.
The commercial welders made experiments with different
The process of electric resistance welding includes stop and steam welding that result in coalescence of surfaces where the heat is generated by the electrical resistance of the combined materials and the force that is used to stick welders the materials together during the arc welding process.
The arc welding temperatures are influenced by different factors such as the metal coating, the electrode geometry, the work piece proportions, the electrode materials, the pressing force, the duration of the welding time and the electrical current. The resistance welding methods are efficient and are preferred since they do not cause pollution. However, the resistance welding methods have certain limitations as they could be applied on thin materials mainly and the cost of the mig welding equipment could be quite high.
The spot welding method is used when joining two overlapping metal sheets, electrical wiring hangers, studs or projections. With that method the plasma cutting
More Reasons Why You Should Pipe Weld
Let us examine some of the noteworthy advantages of pipe welding - though this doesn’t enumerate every single advantage that pipe welding boasts of! There are numerous proprietary methods to connect or join pipes for the various applications which will not be discussed here.
A major advantage of pipes that are welded over those that are screw fitted is that we can eliminate all the fittings that are required to connect the individual straight portions of the pipe. When a pipe is screw fitted, fittings are needed between each joint in the straight lengths of the pipe. On the contrary, with welding it is possible for a straight length pipe to be joined together at any place or in any form.
All that is required is prep on either ends of the pipe and on many occasions, when threads arte not utilized, a pipe with a thinner wall can be chosen especially for big jobs and long runs which can make it very cost effective. W
While training new welders, it can be a challenge for companies to instill the correct approach and principles right from the beginning of their training process. This will not only help them to be well prepared when it comes to creating good welds but will also help them to contribute in a positive manner when it comes the welding operation in general.
To learn welding is not easy as it requires a solid foundation, patience and practice. This is why it is important and a challenge for companies training new welders to inculcate good habits very early in the course of the training schedule so as to ensure that they will pass out as confident and professional welders by the end of their training.
The following 10 points are invaluable which every novice welder should be taught which will not only help them to become confident welders but will also help to keep them safe and protected in the course of their work.
- 1. Safety Always the
Updated and Latest Welding Apps for Phones and Tablets
If you are someone who likes to find out all about the latest apps that are being introduced, let me help you with your search for welding apps. Here are some of the newly updated and latest welding apps for people interested in this field, that you will find real handy which is available in the App Store or/and Android Market (now called Google Play).
Weld Design – Android
Permits and helps you to calculate whether a weld has enough strength in both 2D and 3D.
Structural/Civil App that Bundles Tools related to Welding
Gives information about all kinds of electrodes (Stick, FCAW, TIG)
All calculations (Unity check and combined stress)
Calculates MIG wire speed