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Case-hardening or carburization is the process of introducing carbon to the surface of a low-carbon iron, or more commonly a low-carbon steel object, in order to harden the surface. Iron which has a carbon content greater than ~0.02% is known as steel .
Quench polish quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is sometimes known by the brand name of Tufftride, Tenifer or Melonite. [1] Three steps are involved: nitrocarburize ("quench"), polish, and post-oxidize ("quench"). [2]
Drywall (plasterboard) nail – short, hardened, ring-shank nail with a very thin head; Fiber cement nail – a nail for installing fiber cement siding; Finish nail (bullet head nail, lost-head nail) – A wire nail with a small head intended to be minimally visible or driven below the wood surface and the hole filled to be invisible
Gel nails can be utilised in order to create artificial nail extensions, but can also be used like nail polish. They are hardened using ultraviolet light. [5] They last longer than regular nail polish and chip less often. They can have a high-gloss finish and last for two to three weeks. [6] [5]
The finish on a Glock pistol is the third and final hardening process. It is 0.05 mm (0.0020 in) thick and produces a 64 Rockwell C hardness rating via a 500 °C (932 °F) nitride bath. [ 30 ] The final matte, non-glare finish meets or exceeds stainless steel specifications, is 85% more corrosion resistant than a hard chrome finish, and is 99.9 ...
Mass finishing is a group of manufacturing processes that allow large quantities of parts to be simultaneously finished. The goal of this type of finishing is to burnish , deburr , clean, radius, de-flash , descale , remove rust , polish, brighten, surface harden , prepare parts for further finishing, or break off die cast runners.