The shininess of stainless steel results from the chemical element chromium. Although it is highly corrosion resistant at normal temperatures, chromium becomes unstable when it is heated in the presence of oxygen.
Consequently, metallurgists that perform stainless steel treating should take these measures to prevent the alloy from experiencing oxidation, which tarnishes its surface and also compromises the dimensional stability of assemblies.
Pieces which have a rough or pitted surface are more prone to oxidize that pieces which has a smooth, uniform coating. When work bits contain rough patches, the regions are smoothed out until they match the rest of the surface area. Find the affordable Stainless Steel Pipe fittings wholesale price in your locality through http://ecofittingvalve.com/.
Smoothing out rough spots also enhances the look of the metallic and helps simplify polishing operations that are performed after the completion of the steel treating procedure.
Ahead of the metal enters the furnace, it must have surface coatings eliminated. Coatings such as rust, paint, grease and stickers oxidize and mar the surface of the metal as it undergoes heat treating. Thick coatings of paint and rust may be eliminated with grinding or sandblasting.
Light coatings of rust and dirt may be removed using a non-corrosive acid pickle solution. Find more information for all types of Price stainless steel pipe sch 10 (also known as ” ราคา ท่อสแตนเลส sch 10 ” in Thai language) through http://ecofittingvalve.com/ .
Placing chromium alloys in a controlled atmosphere that is oxygen-free is vital for preventing oxidation. Atmosphere-controlled continuous furnaces that maintain a nitrogen/hydrogen air and vacuum furnaces that remove gas from the furnace chamber are frequently used for brazing and annealing chromium alloys.
When chromium alloys are put in an atmosphere-controlled furnace, flux that prevents oxidation is no longer needed. Applying flux increases the odds that the metal will experience an undesirable residue on its surface after the process is finished.
Keep the Process As Short As Possible
The longer a heat treating procedure lasts, the greater the possibility that oxidation will occur. Consequently, an exposure time of four hours or less is recommended. In situations where this isn’t possible, performing the measures above should still prevent the metal from experiencing oxidation that tarnishes the surface or compromises dimensional stability.
Creating a smooth surface, removing coatings, using a controlled atmosphere, avoiding the use of flux, and keeping the duration of the heat treating process as short as possible are methods that metallurgists use to keep the integrity of chromium alloys. To find out more about stainless steel treating, contact a metallurgist that specializes in chromium alloys now.