Microstructure Evolution and Mechanical Properties of 5CrNi4Mo Die Steel Parts by Selective Laser Melting Additive Manufacturing

Hongyu, 陈洪宇 Chen; Dongdong, 顾冬冬 Gu; Ronghai, 顾荣海 Gu; Wenhua, 陈文华 Chen; Donghua, 戴冬华 Dai

doi:10.3788/cjl201643.0203003

Cited by 3 publications

(2 citation statements)

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“…For the 5CrNi4Mo material, Nanjing University of Aeronautics and Astronautics compares the repair effects of different laser energy density values to obtain the best laser energy density value. The microhardness of the repair layer reached 689.5 HV 0.2, the friction coefficient reached 0.44, and the wear rate reached 2.3×10 -5 mm 3 /(N•m) [17]. A suitable laser energy density value effectively improves the performance of the repaired surface.…”

Section: Figure 2 Mold Repair Sequencementioning

confidence: 97%

“…Laser cladding technology is an important development direction for mold surface repair. Compared to the application of other additive manufacturing technologies in mold repair, laser cladding technology has the following unique advantages due to its unique laser rapid heating-solidification molding mechanism [17,19,20]: 1) By selecting the appropriate laser energy density value, the density of the repaired cladding layer can reach 98.12%. 2) This process can be used to repair molds with high dimensional accuracy and surface quality.…”

Section: Figure 2 Mold Repair Sequencementioning

confidence: 99%

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Research on Additive Manufacturing Technology in the Field of Mold Repair

Lin

Cui

Han

et al. 2020

MSF

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With the rapid development of modern industry, mold as a basic hardware facility has become one of the important factors affecting the development of modern industry. The surface quality and working reliability of the mold have a direct impact on the quality of the part. Faced with a large number of failed molds in industrial production, fast and reliable mold repair technology can realize mold reuse under the premise of ensuring mold performance. It effectively shortens the construction period, saves costs and reduces mold waste. The article outlines the characteristics of wire and arc additive manufacturing technology, selective electron beam melting technology and laser cladding technology in additive manufacturing technology. The application characteristics of three additive manufacturing technologies in mold repair are analyzed. The application prospect of laser cladding technology in mold repair is pointed out. In view of the improved work reliability, the direction of laser cladding technology in the field of mold repair can be prospected.

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Section: Figure 2 Mold Repair Sequencementioning

confidence: 97%

Section: Figure 2 Mold Repair Sequencementioning

confidence: 99%