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 ...
In low-temperature environments (such as cold chain packaging production), conventional screws are prone to brittle cracking and extrusion interruptions due to low-temperature embrittlement. Daokedaow specifically developed Ni-Mn-Cr low-temperature alloy cladding technology, where the coating maintains an impact toughness of 25J/cm² at -40°C—3 times higher than traditional materials, effectively resisting low-temperature brittle fractures. For Φ80mm low-temperature extrusion screws, the "preheating-pulse cladding-heat preservation" process was employed, with base temperature rise controlled within 120°C to avoid thermal stress cracks. The cladding layer achieves a thickness of 1.2mm and hardness of HRC52-55, with wear resistance improved by 2.5 times. After repair, the screw's extrusion capacity returns to new-piece levels, enabling continuous operation for 3,000 hours under low-temperature conditions without failure, extending the lifespan from the original 6 months to 20 months. Following implementation by a cold chain packaging enterprise, the number of equipment shutdowns per machine dropped from 5 times monthly to 0.5 times, saving 80,000 yuan annually in replacement costs. Product dimensional tolerances narrowed from ±0.2mm to ±0.08mm, with the pass rate increasing to 99.6%, perfectly adapting to low-temperature extrusion scenarios involving PE and PP.
