According to the width of a single laser quenching band, there are two types of laser quenching bands: narrow band and wide band; The distribution types of laser quenching strips include straight bar, spiral, sine wave, cross grid, circular ring, etc. One or more composite distribution types can be selected for laser quenching according to needs. At the same time, the distribution position of the laser quenched strip on the quenched surface and the hardening area ratio (the ratio of the total surface area of the laser quenched strip to the entire working surface area) should be determined.

Laser heat treatment, also known as laser quenching or laser phase transformation hardening, is a process in which a high-energy laser beam is used to quickly scan the workpiece, causing the surface temperature of the irradiated metal or alloy to rise above the phase transformation point at an extremely fast rate. When the laser beam leaves the irradiated area, due to thermal conduction, the cold substrate rapidly cools down and undergoes self cooling quenching to obtain a finer hardened layer structure, with a hardness generally higher than that of conventional quenching.