Heat treatment

Category:Stainless steel machining

Keywords: stainless steel processing, round steel, profiles

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Heat treatment Details

Metal heat treatment is a process in which the metal workpiece is heated to a suitable temperature in a certain medium, and after maintaining it at this temperature for a certain time, it is cooled at different speeds.
As early as 770 BC ~ 222 years ago, the Chinese people have found in production practice that the performance of copper and iron will change due to the influence of temperature and pressure deformation. The softening treatment of white cast iron is an important process for manufacturing agricultural tools.
With the development of quenching technology, people gradually found the effect of cold agent on quenching quality. But in ancient times as a personal "craft" of the secret, not outside, so the development is very slow.
From 1850 to 1880, there were a series of patents for the application of various gases (such as hydrogen, coal gas, carbon monoxide, etc.) to protect heating. 1889~1890 British Lake to obtain a variety of metal bright heat treatment patents.
Since the 20th century, the development of metal physics and the transplantation of other new technologies have made the metal heat treatment process more developed. A remarkable progress is the application of rotary furnace for gas carburizing in industrial production from 1901 to 1925. Dew point potentiometer appeared in the 1930 s to control the carbon potential in the furnace atmosphere. In the 1960 s, heat treatment technology used the action of plasma field to develop ion nitriding and carburizing processes. The application of laser and electron beam technology has also enabled metals to obtain new surface heat treatment and chemical heat treatment methods.

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