2019-01-18
Forging is the ancient and magical craft of the door
Forging is a method of molding a metal by hammering. It is the process of forging and heat-treating steel to give it the desired hardness and toughness and shape. Solingen, the German city of Knife, is said to be shaking in the forging sound because it is spread over the tool workshop. Japanese kitchen knives are also representative of the forging process.
The forging process has a long history of complex techniques, repeated smelting, precise folding forging times, and can adjust carbon and impurities. The process of smelting, quenching, tempering and other processes is the accumulation of experience of craftsmen for decades or even generations. Traditional forging processes are costly and have high scrap rates, so historically, advanced tooling for hand forging is relatively expensive.
The process of forging requires heating. Heat treatment can improve the microstructure of steel, and the toughness, hardness and wear resistance of steel are related to heat treatment. To obtain excellent physical properties, it is necessary to use hardening (also known as quenching), tempering, annealing and surface hardening in heat treatment.
In the era of underdeveloped technology, heat treatment is a highly sophisticated technique. Today's artisan craftsmen still insist on using traditional techniques in top-level hand-knife, such as visually observing the difference in color of iron in thousands of degrees of high temperature. The temperature difference between the temperature and the temperature is often only between a few tens of degrees, which is related to the ancient Chinese glaze. The difficulty of the red porcelain is similar. Therefore, many key tasks must be