Laser Quenching equipment
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Used for surface strengthening, repair, and remanufacturing of components, the coating has high adhe...
Flexible processing of complex curved sheet metal parts, with high cutting accuracy, fast speed, and...
Specially designed for seamless welding of precision plastic components, with a small heat affected ...
Hydrogen energy vehicle brake discs are prone to hydrogen embrittlement and cracking due to long-term exposure to hydrogen gas, and traditional brake discs cannot meet safety requirements. Daokedao adopts a composite solution of "dehydrogenation treatment+ceramic melting". Firstly, the brake disc substrate is vacuum dehydrogenated to reduce the hydrogen content to below 0.5ppm. Then, a Cr ₂ O ∝ - ZrO2 composite coating is melted, with a hardness of HV1100 and a 4-fold increase in wear resistance. The incidence of hydrogen embrittlement cracks is reduced to zero. Optimizing the cladding process to reduce hydrogen adsorption for the brake disc of a Φ 350mm hydrogen energy vehicle, stabilizing the friction coefficient at 0.35-0.45 during braking, and reducing hydrogen permeability by 95% at high temperatures (600 ℃). After 100000 brake tests, the reinforced brake disc has no cracks and the hydrogen embrittlement sensitivity level has reached the highest level H1. After trial use by a hydrogen energy vehicle company, the service life of the brake disc has been extended from 60000 kilometers to 250000 kilometers. It has passed ISO 14687 hydrogen compatibility certification and has been included in the mass production plan. This solution is also suitable for strengthening hydrogen environment components such as fuel cell vehicles and hydrogen refueling station equipment.
