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Ideal Amperage Set For TIG Weld

한국어 자막이 제공됩니다. This episode is about setting a proper amperage for stainless steel tig weld. In fact, it is hard to tell people a proper amperage because the welding depends on the combination of many factors such as welder's skill, amperage, weld process, material, filler and joint types etc. However, the amperage is one of the important factors and most beginners are highly interested in setting the weld current. That's why I prepared this episode. In addition, I attach my amperage guideline for the most common jobs in a real fabrication and pipe spool shops. I will show you my amperage range for the most common stainless steel jobs. Please take this as a reference and a guideline. 1. Stainless Tubing : Amperage range is 40~80 depending on pipe size. These pipes are mostly used for processing pipes in the field of the F & D and pharmaceutical industries. They have very thin wall thickness (1mm or 2mm) and don't need a bevel to join them. Most jobs are done by autogenous welding. In other words, it is welded by fusion without a filler wire. Nowadays, many jobs are done by an orbital welding machine. But some jobs are done by a tig weld process. 2. Schedule 10 Pipe : 1) Root Pass Range : 70~100 amp depending on pipe size 2) Cap or Final : 5~10 amp higher than root pass amperage. For example, if I set 80 amp for root, I set the amp for the final cap around 85~90 3. Schdule 40 Pipe : It is thicker than schedule 10 pipe 1)Root pass : Range from 80~120. 2)Cap and Final : 10~20 amp higher than root pass 4. Schdule 80 Pipe : It is thicker than schedule 40 pipe 1)Root pass : Range from 100~130 2)Cap and Final : 20~40 amp higher than root pass 5. Fillet Weld 1) ⅛ thick material : around 120 2) ¼ thick material : around 140 3) ½ thick material : around 160 6. Plate Weld 1)Thick under ⅛ : Range from 60~80 2) Thick between ⅛ and ¼ : Range from 80~120 3) Thick between ¼ and ⅜ : Range from 100~140 4) Thick over ⅜ : Range from 140~160 Thank you