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 ...
During the extrusion of PPR pipes, screw wear leads to uneven mixing of molten materials, resulting in hot melt marks on the pipes and a decrease in pressure resistance, with a pass rate of only 93%. Daokedao adopts Cr Mo alloy cladding technology, with a surface coating hardness of HRC55-58 on the screw edges, a 2.5-fold increase in wear resistance, a surface roughness of Ra0.08 μ m on the screw groove, and a 40% improvement in the uniformity of the melt mixture. For the screw of Φ 110mm PPR pipe, the thickness of the cladding layer is 1mm, the clearance between the material and the barrel is controlled at 0.2-0.25mm, and the extrusion pressure is stable at 15-18MPa. After repair, the defect rate of hot melt marks in the pipes decreased to 0.8%, and the pass rate increased to 99.8%. The compliance time for static hydraulic strength testing (110 ℃, 1MPa) was extended from 48 hours to 100 hours, which meets the GB/T 18742.2 PPR pipe standard. After application in a certain pipe factory, the daily production of a single equipment increased by 12 tons, the loss of waste was reduced by 90%, and the screw life was extended from 8 months to 24 months, suitable for extrusion production of PPR pipes for hot and cold water.
