Warpage analysis in injection moulding process

Hidayah, Malikhatul; Shayfull, Z.; Nasir, S. M.; Fathullah, M.; Hazwan, M. H. M.

doi:10.1063/1.5002244

Cited by 5 publications

(8 citation statements)

References 14 publications

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“…4A , a minor absorption peak is evident at 220 nm, indicative of graphene oxide and associated with the π–π* transition of C–C bonds. 44 Furthermore, Fig. 4A illustrates the optical absorption spectrum of silver nanowires (AgNWs), exhibiting characteristic peaks at 353 nm and 390 nm, corresponding to the surface plasmon resonances of AgNWs.…”

Section: Resultsmentioning

confidence: 99%

Effect of sulphidation process on the structure, morphology and optical properties of GO/AgNWs composites

Baghirov,

Muradov,

Eyvazova

et al. 2024

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Effect of sulphidation process on the structure, morphology and optical properties of GO/AgNWs composites

Baghirov,

Muradov,

Eyvazova

et al. 2024

RSC Adv.

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“…As placement of gates always remains visible on a moulded part so the aesthetic of the part needs to be considered. [8] In this case study best gate location analysis is carried out and as the part is uniform in shape it is found to be located in the centre of the base side. Figure 2 and Figure 3 show the injection mould tool and its cross-sectional view respectively.…”

Section: Tool and Process Designmentioning

confidence: 99%

“…Runners are passages that distribute molten material from sprue to gates around the cavity inside a mould. Runners slow down and smooth the outflow of liquid and are designed to provide approximate flow rates to various parts of mould cavity [8]. As there exist two types of runner system namely cold runner and hot runner, both these types of runner system are analyzed in this case.…”

Section: Tool and Process Designmentioning

confidence: 99%

“…After the opening of plates, the surface for moulding comes in contact with the environment and there is the chance to happen temperature drop in the mould. The difference in temperature in both mould plates may lead to warpage of part, also because of temperature Fiber L/D ratio drop material may not reach to corners of part and in this case, injecting pressure needs to be increased so this affects the quality of part [8].…”

Section: Cold Sprue Mouldmentioning

confidence: 99%

“…In a hot runner system as cavity and core plates are at high temperature, melt reaches easily to fill the part, and thus it requires lower injection pressure. As melt front reaches the corners of part at high temperature, lower packing is required and as melt fronts meet at high temperatures, there are fewer chances of weld line [8].…”

Section: Hot Sprue Mouldmentioning

confidence: 99%

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A Simulation Study on Warpage Analysis of Injection Moulded Plastic Part

Shikalgar¹,

Zope²,

Sonawane³

et al. 2021

Int. j. eng. manag. res.

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A part to be injection molded is evaluated by simulation for warpage analysis. The plastic part is a supporting plate to be used in the oil filter and it’s made out of nylon material. The effect of various parameters from design to processing of plastic parts is considered and validated by simulation results. The research involved in this was designing mould, computer-aided engineering, simulation analysis, and determination of plastic part processing conditions. In this work PA66 (Grade name – Zytel 70G13HS1LNC010) material is used and the material contains 13 % of fiber. Fiber orientation is nothing but the distribution of plastic melt inside the cavity and it also plays important role in deciding the warpage of part. The effect of process parameters on part warpage is investigated from various aspects in comparison with the conventional runner system. Hot runner mould system with innovative cooling channel designs is good results-driven. Results of simulations reveal that elevated mould temperature reduces the unwanted freezing time during the injection phase and thus improves mouldability and enhances part quality. Under similar mould temperature conditions, the effect of process parameters on warpage decreases according to the following order, packing time, packing pressure, melt temperature, injection pressure, and cooling time respectively.

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