Path Generation for Repairing Damaged Parts of Free-Form Surfaces in Laser Remanufacturing

Ling, 董玲 Dong; Xichen, 杨洗陈 Yang; Haiming, 张海明 Zhang; Kai, 雷凯 Lei

doi:10.3788/cjl201239.0703007

Cited by 3 publications

(1 citation statement)

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“…A lot of equipment bearing support members, such as the box, substructure, are made of grey cast iron. However, the surfaces of the equipment, initiating cracks and propagating continually, cause the failure of equipment under the circumstance of long term overloading and vibration [1,2]. The equipment recycling efficiency can be greatly improved with the cracks repaired in the early period of initiation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Micro-Crack Inducing Mechanism by Graphite in Bond Area in Laser Repairing Grey Cast Iron

Fan

et al. 2014

AMM

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Experimental researches are developed on grey cast iron surface to clarify the micro-crack formation mechanism and influence law of graphite phase in bond area. The results show that unreasonable morphology of flake graphite phase in bond area is an important cause of micro-crack initiation and propagation. Their cusps almost cross toward the molten layer and through the bond area. Then the micro-crack grows along the grain boundary. Additionally, under condition of certain specific energy input, an appropriate increase in laser power and scanning speed can enhance molten mass convection. It can be also helpful for the distribution rationalization of graphite phase and reduce crack sources.

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Section: Introductionmentioning

confidence: 99%

Analysis of Micro-Crack Inducing Mechanism by Graphite in Bond Area in Laser Repairing Grey Cast Iron

Fan

et al. 2014

AMM

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Research on trajectory planning of complex curved surface parts by laser cladding remanufacturing

Wang

Sun

Chen

et al. 2018

Int J Adv Manuf Technol

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Microstructure Formation and Fracturing Characteristics of Grey Cast Iron Repaired Using Laser

Fan

et al. 2014

The Scientific World Journal

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The repairing technology based on laser rapid fusion is becoming an important tool for fixing grey cast iron equipment efficiently. A laser repairing protocol was developed using Fe-based alloy powders as material. The microstructure and fracturing feature of the repaired zone (RZ) were analyzed. The results showed that regionally organized RZ with good density and reliable metallurgical bond can be achieved by laser repairing. At the bottom of RZ, dendrites existed in similar direction and extended to the secondary RZ, making the grains grow extensively with inheritance with isometric grains closer to the surface substrate. The strength of the grey cast iron base material was maintained by laser repairing. The base material and RZ were combined with robust strength and fracture resistance. The prevention and deflection of cracking process were analyzed using a cracking process model and showed that the overall crack toughness of the materials increased.

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Path Generation for Repairing Damaged Parts of Free-Form Surfaces in Laser Remanufacturing

Cited by 3 publications

References 0 publications

Analysis of Micro-Crack Inducing Mechanism by Graphite in Bond Area in Laser Repairing Grey Cast Iron

Analysis of Micro-Crack Inducing Mechanism by Graphite in Bond Area in Laser Repairing Grey Cast Iron

Research on trajectory planning of complex curved surface parts by laser cladding remanufacturing

Microstructure Formation and Fracturing Characteristics of Grey Cast Iron Repaired Using Laser

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