Friday, 29 April 2016

Aaron Ardaiz - An Introduction to Pipe Welding

Aaron Ardaiz is an experienced welder who has been working in the field for many years. Over the course of his career he has learned a variety of different welding techniques, and received multiple certifications. 
                                                       Aaron Ardaiz

Currently, he works as a pipe welder. A pipe welder’s job is quite similar to how it sounds. The most cost-effective method to merge two pipes is to weld the two together, which creates the need for experienced and skilled pipe welding professionals.

Being a pipe welder requires specialized training. That is because many of these pipes are used to transport hazardous material, whether it be oil, sewage, or tainted water. There are also many environmental risk factors that are associated with repairing piping. Errors like weak welds can cause some serious problems for pipes, even if the materials being transported are not hazardous. A leaking or busted pipe can represent hundreds of thousands of dollars’ worth of product lost, and doesn’t include the damages to the environment. That is why certification is typically required for pipe welders, and involves passing a number of tests, as well as understanding and being able to execute multiple welding techniques. 

The most common technique used for connecting pipes is arc welding. There are, however, many different kinds of arc welding processes. A well-known process for a pipe welder is the gas-shielded metal arc weld. This involves blanketing the welding area in an inert gas to protect the molten metal from impurities such as oxygen. 

Welding is not as simple and straightforward as it appears. Particularly, pipe welding can be quite difficult. That is because pipe typically requires highly mobile equipment, so the precision of the weld depends entirely upon the experience and skill of the welder. Welding in the field presents other problems too. A welder has to maintain a straight and even bead in order to meld the metals properly. However, the heat required to make molten metal creates a light too bright for a welder to look at. So a welder must wear a protective mask that dials down the light’s intensity. So essentially, the welder has to draw a straight, consistent line with a pencil that reaches 6500 degrees Fahrenheit while he is blindfolded. Quickly it becomes obvious why companies value an experienced welder. An experienced pipe welder can do the job more efficiently, with less mistakes, and avoid injury. While welding is an easy trade to get into, it is a difficult one to master. 

Aaron Ardaiz has dedicated himself to his trade. He takes pride in his pipe welding abilities, and holds many certifications in various forms of the discipline. He has the kind of experience to train other aspiring welders into seasoned, reliable professionals. 

Thursday, 21 April 2016

Aaron Ardaiz Explores Welding Techniques

Aaron Ardaiz is an experienced welder who has been working in the trade for many years. He has learned the ins and outs of the skill, refining his abilities to get more familiar with the various techniques. While many have a basic idea of what welding is, few realize that there are many different welding techniques, each of which have different pros and cons. Below we will discuss these techniques, explaining the advantages and disadvantages of each.
Aaron Ardaiz
  • Shielded Metal Arc Welding (SMAW): This welding technique is often referred to simply as ‘Stick’. Stick welding uses a welding rod in order to carry an electric current and feed the metal into the weld. Stick welding uses this electric current, creating an arc from the rod to the metal, generating temperatures as high as 6500 degrees Fahrenheit. While the metal heats, the flux from the rod merges with the metal, creating a weld. The advantages of the stick weld are that the equipment is low cost, easy to transport, requires no shielding gas, and can work even on rusty or dirty metal. The downside of this method is that it produces high energy wastes, is hard to use on delicate materials, and requires a high skill level from the operator. 
  • Gas Tungsten Arc Welding (GTAW): This weld is commonly referred to as the TIG, or the Heliarc. This welding technique uses a non-consumable tungsten electrode to create a molten weld puddle. An external filler rod can be added to that molten metal puddle in order to create a weld bead. This process requires what is called a shielding gas. A shielding gas is an inert gas that is used to protect a weld area from oxygen and water vapor. The most common shielding gas used is argon. The advantages of this technique include clean, quality welds. It is easy to use on thin materials, many different alloys can be welded, and the welds typically look better. The cons of this technique are that the equipment cost is high, an external shielding gas is required, it does not work on rusty or dirty metal, and it requires a high skill level from the operator.
  • Flux-Cored Arc Welding (FCAW): This welding process is similar to Gas Metal Arc Welding. However, it uses a tubular wire that is filled with flux, as opposed to a solid wire. This kind of welding is used for thick materials, and heavy equipment construction repairs. The advantages are that it has no need for external shielding gas, has high efficiency, and minimal clean up. The disadvantages include high equipment costs, and the process generally creates a lot of smoke.
Aaron Ardaiz has familiarized himself with the many different kinds of welding techniques available. He has a diversified skillset that makes him valuable in the welding world.