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 ...
Hot work molds (such as forging dies and die-casting molds) are prone to developing 0.1-0.5mm thermal fatigue cracks during cyclic exposure to temperatures above 800°C and room temperature. Traditional welding repairs often exacerbate cracking. Daokedaow adopts a "pulsed laser cladding + high-temperature alloy powder" combined solution, reducing heat input by 50% with a 200KHz pulse frequency while keeping base material temperature rise below 300°C to avoid thermal stress accumulation. The selected Co-Ni-Cr-W quaternary alloy powder maintains a hardness of HRC45 at 600°C, with a thermal expansion coefficient matching H13 mold steel at 95%. The repair process begins with ultrasonic flaw detection to locate cracks, followed by precise cladding along the crack path. The cladding layer achieves a porosity of ≤0.1% and a bonding strength of 650MPa. After repairing a Φ500mm forging die at a foundry, thermal fatigue life was extended from 80,000 pieces to 250,000 pieces, with crack propagation rate reduced to zero. At a repair cost of 80,000 yuan, it saves 720,000 yuan compared to new molds, making it suitable for hot working scenarios involving aluminum alloy and stainless steel.
