▏Needs of the industry
Molds are used in a wide range of applications, and the vast majority of parts require molding. The service life of the mold depends on its anti-wear and anti-mechanical damage ability. Once excessive wear or mechanical damage, the shape-damaged parts are challenging to repair and can only be purchased or customized with new molds. The mold manufacturing process is complicated, with the long production cycle and the high processing cost. Therefore, the repair and reuse of failed molds undoubtedly have significant economic benefits. There are many methods to repair molds, such as EDM, argon arc welding repair, laser overlay welding, electric brush plating, Etc. Laser cladding technology for mold repair is a unique advantage; the powder material is flexible and adjustable to meet different service performance requirements, can prepare different kinds of wear-resistant, high-temperature, scour-resistant coatings, and even gradient coatings, coating materials can be cobalt-based, nickel-based, and ceramic composite materials. Compared with traditional arc welding technology, the heat input of laser cladding is small, the thermal impact on the substrate is small, and the residual stress in the repair area is more minor; and the precision is high, which can realize the precision repair of tiny defects in high-grade molds.
EHLA for the efficient preparation of wear-resistant and high-temperature resistant coatings on the surface of different size axisymmetric parts; it has unique advantages in conducting surface fusion coating of thin-walled small size parts due to low heat input, small deformation, and high precision.
• Inner Laser Cladding
It is used to prepare wear-resistant, high-temperature-resistant, and scour-resistant coatings on the inner surface of injection molds and the rapid repair of local defects on the inner surface of mildew and the laser cladding repair of narrow and restricted locations.
• Conventional laser cladding repair
For precision repair and cladding of partially damaged areas and tool edges of automotive dies and stamping dies
▏Laser Application Cases
• EHLA for Glass Shape Punch
Glass mold punch is a necessary accessory for producing glass containers by smallmouth blowing and pressing method. Since the glass material is susceptible to the shape of the punch, even a tiny dimensional deviation will affect the forming effect of the glass container, so the punch is usually required to have good thermal stability and wear resistance to avoid deformation and shortening of service life. Through the two-step process of surface cleaning and ultra-high-speed laser cladding, the thickness of the cladding layer on the repaired glass mold punch can reach 0.05-1mm, and the hardness can reach over HRC65 which effectively improves the quality and production efficiency of the glass mold.
• Automotive mold laser cladding repair
Auto tooling is the essential basic equipment in the production process of auto parts. However, due to the harsh production environment of auto parts, it is easy to lead to deformation and fracture of auto tooling. On the other hand, the deformation of auto molds repaired by laser cladding is small, the hardness can reach above HRC50, and it is not easy to crack, which can guarantee the dimensional accuracy prolong the service life of molds.
Glass mold punch ultra high-speed laser cladding
Mold edge laser welding refresher cover
Car mold components laser hardening