Myriads ways of stainless steel welding
Stainless steel is a combination of different materials that can be characterized as iron-based metal alloys with at least 12 percent chromium. This metal is highly resistance to rust because of the protective outer layer of chromium oxide. Stainless steel does not identify the specific type of metal and cannot be used for any practical purpose. Here’s how to weld some major families of stainless steel.
Stainless steel welding can be very tedious job if you are unknown about the process. It is highly reactive to excessive heat by warping and distorting once it cools. Everything shows up in stainless. What I mean by that is if you weld with too much heat you can see it by the heat marks left in the metal along with any distortion. It also scratches very easily so you must take care when welding on a metal table.
One of the best things to do when welding stainless is to use a heat sink such as brass or aluminum. It is advisable to clamp a piece of brass behind the seam of the weld. This easily absorbs heat which in turn prevents burn. It is recommendable to apply less heat to this material because it is a thin material. It’s worth the extra time to make sure you have the heat sinks in place before beginning your weld. This allows you to actually weld the entire seam without interruption. The metal turns grey at the end because when you remove the heat it is the hottest point. Again a small suggestion is that remove your foot off the pedal until and unless weld pool solidifies and then touch the tungsten to the metal and hold it there till your gas stops flowing. You’ll notice that the color will come back to the weld. Depending on how long you touch the tungsten to the end of the weld. You can actually get that nice salmon color back. You can only do this with a setup that uses a foot pedal. If you are using a dry rig system where you have to use a lift arc this is not possible. Welding should be done on the channels and not the table to keep it clean.
Stainless steel can be used for myriads purpose. Commercial kitchen table, steel wad rope, is some of the excellent creation of stainless steel.
Welding stainless steel entirely depends on you. It can be either easy or complex. Basically each welding job differs from one to another. There are commonly three types of welding process such as Mig welding, the Tig welding and Arc welding.
Mig welding- The full form of MIG is metal inert gas and is the most popular process nowadays. It is generally an arc welding process that utilizes a continuous wire feed of an electrode that is shielded using an external gas source.
Tig welding- Stands for Gas Tungsten Arc Welding (GTAW) or more commonly Tungsten Inert Gas process (TIG). It is generally a complex process than MIG process. The process involves an arc being struck to the work using a tungsten electrode in the hand-piece; filler material is then applied through the resulting arc. In some instances such as sheet metals no filler rods are used as the join is simply fused together using the arc.
Arc welding- Arc welding is the oldest process but is still used extensively as it is comparatively easier process. Arc weld electrodes have a flux coating that generates a shielding gas to protect the metal from atmospheric contaminants; they increase deposition rates and cover the weld with a slag coating.
Welding can become perfect with correct equipment and choosing the best process for the job. For basic welding of stainless the arc or mig process will suffice, however if you require a top quality finish or are constructing an item that requires a clean finish such as a commercial food mixing component the tig welder is the way to go. The bottom line is that implementing the correct process and practice will soon get you to expert status in no time.
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