Study of the effect of heat treatment on the structure and properties of the specimens obtained by the method of direct metal deposition

Горунов, А. И.; Gil'mutdinov, A. Kh.

doi:10.1007/s00170-016-8405-y

Cited by 24 publications

(5 citation statements)

References 21 publications

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“…However, traditional milling and drilling methods cannot produce intricate CCCs. Additive manufacturing (AM) processes such as fused filament fabrication (FFF), electron beam melting, selective laser melting [3], selective laser sintering [4], diffusion bonding [5], direct metal deposition [6], or direct metal laser sintering [7] overcome these challenges and enable the production of molds or dies with complex CCCs. Kitayama et al [8] examined the cooling performance of CCCs in plastic injection molding (PIM) numerically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

Rapid Development of an Injection Mold with High Cooling Performance Using Molding Simulation and Rapid Tooling Technology

et al. 2021

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Rapid tooling technology (RTT) provides an alternative approach to quickly provide wax injection molds for the required products since it can reduce the time to market compared with conventional machining approaches. Removing conformal cooling channels (CCCs) is the key technology for manufacturing injection mold fabricated by rapid tooling technology. In this study, three different kinds of materials were used to fabricate CCCs embedded in the injection mold. This work explores a technology for rapid development of injection mold with high cooling performance. It was found that wax is the most suitable material for making CCCs. An innovative method for fabricating a large intermediary mold with both high load and supporting capacities for manufacturing a large rapid tooling using polyurethane foam was demonstrated. A trend equation for predicting the usage amount of polyurethane foam was proposed. The production cost savings of about 50% can be obtained. An optimum conformal cooling channel design obtained by simulation is proposed. Three injection molds with different cooling channels for injection molding were fabricated by RTT. Reductions in the cooling time by about 89% was obtained. The variation of the results between the experiment and the simulation was investigated and analyzed.

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Section: Introductionmentioning

confidence: 99%

Rapid Development of an Injection Mold with High Cooling Performance Using Molding Simulation and Rapid Tooling Technology

et al. 2021

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“…Thus, the approximately amounts of the increase in the mold thickness for diameters of cooling channels of 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 11 mm, and 13 mm are about 1.7 mm, 3 mm, 4.4 mm, 5.7 mm, 7.1 mm, 12.4 mm, and 15.1 mm, respectively. According to the results described above, the ndings of this study are very practical and can provide a reference for the design of molds or dies with conformal cooling channel, especially for the fabrication of the injection molding tooling with conformal cooling channels using the technologies such as atom diffusion additive manufacturing (ADAM), electron beam melting (EBM) [33], SLM [34], selective laser sintering (SLS) [35], diffusion bonding (DB) [36], direct metal deposition (DMD) [37], or direct metal laser sintering (DMLS) [38] because the fabrication costs is costly. The fabricated molds or dies can be employed in metal injection molding [39], rotational molding [40], centrifugal molding, thermoforming [41], transfer molding [42], and hot stamping [43], plastic injection molding [44], or blow molding [45].…”

Section: Resultsmentioning

confidence: 99%

Enhancing the Structural Strength for Injection Molding Tooling With Conformal Cooling Channels Using ANSYS Software

Kuo

You

2021

Preprint

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Injection molding of wax patterns faces increasing demands for production rate. Proper thermal management of the injection molding tooling is capable of improving the production rate. Precise temperature control is a key to shorten the cooling time using the conformal cooling channels which are conformal to the molding cavity. However, the service life of the injection molding tooling with cooling channels will reduce significantly because the structural strength will reduce obviously. In this study, the feasibility of applying the increase in the mold thickness to maintain the structural strength of the injection molding tooling with cooling channels was verified through simulation and experiments conducted. It was found that the average variation between the results of simulation and the experiment is about 24.9%. The approximately amount of the increase in the thickness required for different diameters of cooling channels can be determined according to the trend equation of y=1.3429x-2.3429. The results can provide a reference for the conformal cooling channel design.

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“…The effect of heat treatment at 550 and 1050°C on the structure and tribological properties of nickel-based metal specimens formed by DLD material when introducing counterface, strength and ductility under static loads, and durability under cyclic bending loads was investigated by Gorunov and Gilmutdinov [73]. Heat treatment has been shown to increase the wear resistance of specimens with significant carbide morphology emission.…”

Section: Microstructurementioning

confidence: 99%

Review on surface characteristics of components produced by direct metal deposition process

Kumar

Anand

et al. 2022

JMES

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Direct metal deposition (DMD) is a metal additive manufacturing (AM) process that builds objects layer by layer. The surface properties of DMD components are discussed in this study. The fluctuation of surface attributes such as roughness, finish, texture, and so on as a function of operation parameters has been investigated for a number of materials. This research assists in identifying the optimal process parameters for the material chosen, such as material feed rate, gas flow rate, and laser power, in order to generate the best surface characteristics. The results show that wire feed deposition surpasses powder feed deposition. The laser power and scanning speed of the laser were found to be the most influential process parameters. The study results reveal that the optimum process parameter combinations are material specific and is the keyfactor for obtaining better products with reduced surface roughness and waviness. The microstructural study also explores the material specfic effect in processs parameter combinations. This research could be used to determine or predict the best process parameters for a wide range of industrial materials.

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Study of the effect of heat treatment on the structure and properties of the specimens obtained by the method of direct metal deposition

Cited by 24 publications

References 21 publications

Rapid Development of an Injection Mold with High Cooling Performance Using Molding Simulation and Rapid Tooling Technology

Rapid Development of an Injection Mold with High Cooling Performance Using Molding Simulation and Rapid Tooling Technology

Enhancing the Structural Strength for Injection Molding Tooling With Conformal Cooling Channels Using ANSYS Software

Review on surface characteristics of components produced by direct metal deposition process

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Study of the effect of heat treatment on the structure and properties of the specimens obtained by the method of direct metal deposition

Cited by 24 publications

References 21 publications

Rapid Development of an Injection Mold with High Cooling Performance Using Molding Simulation and Rapid Tooling Technology

Rapid Development of an Injection Mold with High Cooling Performance Using Molding Simulation and Rapid Tooling Technology

Enhancing the Structural Strength for Injection Molding Tooling With Conformal Cooling Channels Using ANSYS&nbsp;Software

Review on surface characteristics of components produced by direct metal deposition process

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Product

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Enhancing the Structural Strength for Injection Molding Tooling With Conformal Cooling Channels Using ANSYS Software