Cold welding repair method for laser surface cladding hydraulic vertical column

• Main Authors: DU CHAOFEI, WANG YONGFANG, CAO WEIYE, WANG XIAOBIAO
• Format: Patent
• Language: Chinese; English
• Published: 19.02.2019
• Subjects: COMBINED OPERATIONS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; TRANSPORTING; UNIVERSAL MACHINE TOOLS

The invention relates to a cold welding repair method. The problems that after a laser surface cladding hydraulic vertical column is repaired through high-energy pulse cold welding, the repaired zoneof the laser surface cladding hydraulic vertical column is often abraded earlier than other zones of the workpiece, and the repaired zone or the adjacent zone is corroded are solved. Through the coldwelding repair method for the laser surface cladding hydraulic vertical column, the defective part after repairing of the laser surface cladding hydraulic vertical column has the same abrasion resistance or corrosion resistance as the laser cladding layer. The method comprises the following steps that (1) the hydraulic vertical column is subjected to cleaning and oil removal; (2) the defective zone of the hydraulic vertical column is polished; (3) a cold welding material is prepared, and the prepared cold welding material is made of a material which has the same chemical components as that ofa laser cladding material;