Can the kitchen knife be quenched after the edge is rolled?

The kitchen knife can be quenched after the edge is rolled. A kitchen knife that fails to quench for the first time can be quenched for the second time. However, it is necessary to prevent excessive quenching, and too high quenching intensity will deform the blades. The metal workpiece is heated to a certain temperature, and then suddenly immersed in water or oil for cooling to increase its hardness. Quenching is a metal heat treatment process. Quenching refers to the rapid cooling of metal to adjust its original mechanical properties. In order to carry out the quenching process, the metal is heated to a temperature higher than normal conditions, usually higher than its recrystallization temperature but lower than its melting temperature. In order to let the heat soak the material, the metal can be kept at this temperature for a period of time. Once the metal is kept at the required temperature, it is quenched in the medium until it returns to room temperature. Metals can also be quenched for a long time, so that the cooling during quenching is distributed throughout the thickness of the material.