Stainless Steel Pipe Fitting In Mumbai | Maha Bhairav Stainless Steel
Stainless Steel Pipe Fitting In Mumbai | Maha Bhairav Stainless Steel
Maintaining Corrosion Resistance and Increasing Productivity
For Stainless Steel pipe fitting In Mumbai Contact Maha Bhairav Stainless Steel In Mumbai
There’s no voodoo when it comes to welding stainless steel tube and pipe – the proper selection of filler metals, joint preparation, cleanliness and welding processes help ensure that the final product meets the designated quality standards and retains its intended corrosion-resistant qualities.
There are, however, evolutions to well-established processes and techniques that allow pipe fabricators to increase productivity without sacrificing the corrosion resistance of the stainless steel.
First, you need to answer why stainless and not galvanized steels or mild steel. If there is a logical conclusion, you can hop on to the next step, choosing among the different grades. The grades usually adjust based on resistance to heat, overall strength and additives used. Like type 304 steel is the most preferred in the industry for applications with temperature.
critical applications where processes are certified should not be altered without going through appropriate certification processes. Each process detailed in this article has been certified in critical applications and is meant to spur ideas as to how to move your own welding practices forward.
A plastic scouring pad or microfiber cloth is recommendable for cleansing a stainless steel pipe. Any non-abrasive tool won’t damage your stainless steel pipe. A clean material ensures that smear or smudge don’t develop across the piping system. Steel wool is never recommendable because it can scratch the stainless steel pipe.
If you’re welding light sheet metal at low amps with a larger diameter tungsten rod, your weld will struggle to start, and when it does, the weld will not be smooth and consistent. The heavier the stainless steel you’re welding, the bigger the diameter of your rod should be.
When welding stainless steel, it’s also important to select a filler metal with low trace elements. These are residual elements in the raw materials used to make filler metals. They include tin, antimony, arsenic, phosphorus, and sulfur, and can have strong effects on corrosion resistance.
Sensitization is the primary cause of the loss of corrosion resistance and is affected by the chemistry of the base material and filler metal, as well as the temperatures at which the weld cools. Chromium oxide is the “stainless” layer of stainless steel.
If you raise the carbon levels in the weld and neighboring heat affected zone, it forms chromium carbides, which tie up the chromium, preventing the formation of chromium oxide. The shorter the time spent in that temperature zone, the less damage that accrues from the heat of welding. As such, it is important to adhere to maximum interpass temperatures identified in welding procedures.
