Process
The process starts with a standard salt bath nitrocarburizing cycle, which produces a layer of ε iron nitride. Next, the workpiece is mechanically polished; typical polishing processes include vibratory finishing, lapping, and centerless grinding. Finally, the workpiece is re-immersed into the salt quench bath for 20 to 30 minutes, rinsed, and oil dipped. This last step optimizes the corrosion resistance by creating a 3 to 4 micrometre thick layer of iron oxide. It also gives the workpiece a black finish.
Read more about this topic: Quench Polish Quench
Famous quotes containing the word process:
“The invention of photography provided a radically new picture-making processa process based not on synthesis but on selection. The difference was a basic one. Paintings were madeconstructed from a storehouse of traditional schemes and skills and attitudesbut photographs, as the man on the street put, were taken.”
—Jean Szarkowski (b. 1925)
“... the history of the race, from infancy through its stages of barbarism, heathenism, civilization, and Christianity, is a process of suffering, as the lower principles of humanity are gradually subjected to the higher.”
—Catherine E. Beecher (18001878)
“The process of writing has something infinite about it. Even though it is interrupted each night, it is one single notation.”
—Elias Canetti (b. 1905)