Table of Contents
- 1 What is Welding? Significance for the industrial construction field
Materials in the construction or infrastructure development sector require technology that is very helpful for connecting with other materials. And it seems that this has become a very vital necessity and necessity for contractors in working on the project. This technological innovation is very much needed, and this technology is better known as welding. Welding technology is a way to connect iron and similar materials.
In short, as an opening, welding is a way of connecting metal to the liquid phase so that it will eventually freeze and form a joint. And for a broader discussion, what are the stages of the welding process? Check out the reviews in this article to the end.
What is Welding? Significance for the industrial construction field
Materials in the industrial and construction fields require a lot of welding processes to install or assemble them into something desired. Because in the infrastructure sector there is definitely a limitation in its geometric shape, which in our opinion the material requires an indirect process of installing it.
And herein lies the problem arises that need a proper and quick solution to solve it. And very fortunate that welding is the right solution. So that these limitations can be overcome easily and quickly. There may be new problems that arise, but can be resolved properly.
Welding technology is an innovation that can make work much more flexible, practical and easy to do. Generally in this technology it depends on what type of material to be connected. Sometimes someone uses an adhesive. Not only that, there are those who use mechanical splicing techniques and even fusion grafting which is a welding technique that has long been used in the industrial world.
In the construction and industrial fields that have a lot of metal-based materials such as steel or aluminum. So welding is the most widely used method of joining or welding. As is well known, welding is a welding process that is capable of producing joints of a very high quality and allows for joining of metals of various kinds and shapes.
It will be different if the material is made of iron and metal. When the mention of iron in general discusses only elements. However, the mention of metal is certainly much broader and complete.
Why is that? This is because the use of the word metal is broader not only for iron. In addition, the mention of the word burn means that welding is a process that involves very high temperatures in order to reach the melting point of the metal to be joined.
Types of Welding Processes that you need to know
A welding process, of course, must and must involve very hot and high temperatures. This is so that the metal can reach the melting point so as to facilitate the joining process. For this high temperature it’s self comes from a variety of sources. This depends on the welding process used to melt it. A metal that has got a melting point and becomes liquid, then will mix until it becomes frozen. Which later will also form a connection.
However, in the welding process, there are several kinds of methods which are still widely used in the welding process. This classification has been based on the heat source used to melt a metal. And the following are the types of welding processes in full:
1. Gas Welding
For the first type is gas welding. Which means that this process comes from the heat of gas combustion. Generally, some welding processes that use this technique are OFW or Oxy Fuel Welding. This means that the gas that is present and used is a mixture of oxygen with gas.
Meanwhile, there are also those who take advantage of this technique is OAW or Oxy Acetylene Welding. Which gas comes from a mixture of oxygen with carbide or by another name acetylene.
However, until now what is still frequently used is OAW. Due to its relatively cheap and very practical. However, this technique is capable of creating or producing a very high quality connection. Even the oxygen flame created from acetylene can be used to cut brazes and metals.
2. Electric Arc Welding
Furthermore, there is the electric arc welding process which is widely used in the industrial world. This is due to the fact that the welding is much more practical, cheap, and efficient and has high conductivity. So as to be able to produce a quality connection. This process gets heat from an electric arc welding, which is created between the tip of the electrode and the metal.
Thus creating a short-circuit reaction, which is capable of creating an electric current. This is the source of heat in this one technique.
In examples of its use, namely SMAW (Shielded Metal), GMAW (Gas Metal), and GTAW (Tungsten Gas), and others.
3. Electrical Resistance Welding
The next process is electrical resistance. This technique is more widely applied to mass industry. Why is that? This is because this technique utilizes electrical resistance so that it can create a short circuit and can melt the metal being welded.
In its application, it is more widely used in spot and seam welding. This welding is very efficient, which produces very little pollution. Then the machines used are very complex, complicated, and of course, have a high price. Even so, the engine capability is very fast and continuous. No wonder it is widely used in the mass production industry.
4. Padar Phase Welding
This one technique is a little different from other techniques. This is because solid state welding does not first turn the metal into liquid. This process is similar to electrical resistance engineering. It’s just that this process completely uses mechanical energy.
The keys to the success of this process are temperature, time and pressure. The advantage offered by using this process is that there is no area of influence. Making the result of the welded joint has mechanical properties that do not change much.
For application to FSW (Friction Stir), CW (Cold), EXW (Explosing), DFW (Diffusion), FRW (Forge), HPW (Hot Pressure), USW (Ultrasonic), and ROW (Roll) and many others.
5. Thermochemical Welding
And the last one is thermochemistry, which is a welding process using a chemical reaction as a source of heat. In OAW welding can be categorized as thermochemical welding. More widely used in aluminothermic welding. Which is where the heat comes from powdered aluminum and iron oxide.
This process is considered very practical, in which the tool is very easy to carry. This is very suitable for use in areas that are difficult to reach a power source. For example in welding railroad joints.
Stages of Welding Process
The following methods are the stages that are mostly used or in outline the welding machine process. Here are some of the steps carried out in the welding machine, including:
- Initially, first clean the material to be welded. Use a hammer if there is scale on the surface then use a steel brush. This is in order to produce maximum results.
- Place the metal or material in place or the welding machine. Either on the workbench or on the floor, then adjust the density of the two materials. Or even use clamps when needed.
- The period of welding machine is the part to be welded. Then insert the electrodes on the panel. Try to adjust the slope according to the material. Generally around 30, 40, and up to 90 degrees.
- Next, slowly bring the tip of the electrode closer to the material to be welded.
- Pay attention to the distance of the welding machine between the tip of the electrode and the material. Due to be able to affect the quality. Too close can create an imperfect connection. And if it is too far away it can produce sparks or rain of fire.
- Make sure you have used equipment or K3 before starting the welding machine process. Then slowly move the electrode along the material or metal to be welded.
- Good results or not can be seen on the surface. If you have a tight and regular wave and close completely is one sign that the welding process is going well.
- If so, first clean the crust that covers it using a hammer. Check if it is suitable, if not you can repeat the process until it produces a suitable connection.
Advantages and Disadvantages of Welding Process
In this process, of course, it has its own advantages and disadvantages. Although it has many advantages, it cannot be denied that welding also has disadvantages. The advantage of welding is that it is able to produce the efficiency of a good connection. And can be used in construction work with high temperatures.
In addition, there is no limit to the thickness of the metal to be welded. It is not even possible to produce a loose joint. Or even the creep or yield limit is a good and safe limit. Not only that, the production facilities are much cheaper, have good productivity, and are able to increase economic value.
The welding itself has a simpler joint geometry and is highly impermeable to water, air and oil. Even the resulting joints have a light weight.
As for the shortcomings themselves, among others, it is easy to distort and change shape when heating. If there is damage to the connection it is difficult to detect. So it requires a complicated inspection. Sometimes the quality of the metal is much lower than that of the parent metal.
This is a very complete review of welding, if you need a welding machine inspection checklist, please visit here. Hopefully this information about welding is useful for you. And always prioritize health and safety at work. Thank you.
My best friend is planning to start working on an industrial project soon, so welding would probably be a part of that process. Thanks for explaining that welding could be done in construction work with high temperatures and even increase economic value. Maybe it would be a good idea to search for industrial welding solutions in our area and tell him about this article soon.