The laser quenching process is a quenching technology that uses laser to heat the surface of the material above the austenite transformation point. As the material itself cools, the austenite transforms into martensite, thereby hardening the surface of the material. Laser quenching has high power density and fast cooling speed, and does not require cooling media such as water or oil. Compared with induction quenching, flame quenching, and carburizing quenching processes, laser quenching has a uniform hardened layer, higher hardness (generally 1-3 HRC higher than induction quenching), small deformation of the workpiece, easy control of the heating layer depth and heating trajectory, and easy automation , there is no need to design corresponding induction coils according to different part sizes like induction quenching, and the processing of large parts does not need to be limited by the size of the furnace during chemical heat treatments such as carburizing and quenching.
Therefore, in many industrial fields, laser quenching process is gradually replacing traditional processes such as induction quenching and chemical heat treatment. What is particularly important is that the deformation of the workpiece before and after laser quenching is almost negligible, which is especially suitable for surface treatment of parts with high precision requirements.

Accumulated laser additive process database for various high-performance alloy materials

A laser controller software independently developed by Huirui for temperature-controlled laser processing detects the processing temperature through a two-color thermometer. The main applications include: laser quenching, micro-hardening, laser welding (especially laser welding of plastics) and any other causes. Processes that increase the temperature of the workpiece, such as induction heating. LASCON® uses a concise laser process scripting language to control, optimize and supervise the laser process, making it easy to pick out defective parts in laser-supported production. LASCON® supports hardware components such as the LPC04 controller to easily integrate high-speed infrared pyrometers, laser processing heads, calibration units and adapters into machines and factory equipment. The entire software package is divided into different units and communicates via TCP/IP protocol.

By setting different quenching temperatures, the quenching hardness and quenching layer depth changes of the material are detected; at the same time, the temperature control software calculates the conversion and displays the actual light output power of the laser in real time. The maximum hardness can reach HRC60.2, and the average value can reach HRC58.9. By intercepting the quenching single-pass cross section and testing it with a Vickers hardness tester, we can get the change in hardness HV as the depth changes.

Provide one-stop complete solution for workpiece quenching and strengthening