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    Identifying the Moulding Machine Parameters to Maintain the Responses within the Target Value by Design of Experiment

    Access Status
    Fulltext not available
    Authors
    Sokkalingam, Rajalingam
    Bono, A.
    bin Sulaiman, J.
    Date
    2011
    Type
    Conference Paper
    
    Metadata
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    Citation
    Sokkalingam, Rajalingam and Bono, Awang and bin Sulaiman, Jumat. 2011. Identifying the Moulding Machine Parameters to Maintain the Responses within the Target Value by Design of Experiment, in U.K. Ghosh, Nagarajan, M.V. Prasana, and A. Sahed (ed), 3rd CUTSE International Conference, Nov 8-9 2011. Miri, Sarawak: Curtin University Sarawak.
    Source Title
    CUTSE International Conference
    Source Conference
    3rd CUTSE International Conference 2011
    ISBN
    9789834448226
    School
    Curtin Sarawak - Faculty Office
    URI
    http://hdl.handle.net/20.500.11937/41618
    Collection
    • Curtin Research Publications
    Abstract

    In the injection moulding industry, the setting of machine parameters has crucial effects on the quality of products or components. Inappropriate machine parameter settings can cause production and quality problems. The author wants to use a case study to investigate the machine parameters which will affect the length and width dimensions of a plastic cell phone shell component. The machine process setting in use currently caused variations in the dimensions below the specification limits. Therefore the experiment is needed to identify the optimal process parameters that could be set to maintain the length and width dimensions closest to the target value with smallest possible variation. The machine parameters selected in this case study are the mould temperature, injection pressure and screw rotation speed. The Design of Experimental (DOE) approach was used to investigate and identify the optimal injection moulding process parameters. The significant factors affecting the length and width of the cell phone shell were identified from ANOVA. The optimal process parameters to maintain the dimensions closest to the target value were identified (mould temperature is 90 , injection pressure 2325 km/cm2 and screw rotation speed is 125 mm/sec) from interaction graphs and 3D views. Statistical results and analysis are used to provide better interpretation of the experiment. The models are form from ANOVA and the models passed the tests for normality and independence assumptions. Confirmation run with the above parameter setting determined that target dimensions for responses length and width were achievable.

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      Determining optimal process parameter setting critically influences productivity, quality and cost of production in the injection moulding industry. Previously production engineers used trial and error method to determine ...
    • Determining optimal moulding process parameters by two level factorial design with center points
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      Determining optimal process parameter setting critically influences productivity, quality and cost of production in the injection moulding industry. Previously production engineers used trial and error method to determine ...
    • Optimal Process Parameters Setting on Shrinkage of an Injection Molded Part using Design of Experiment Method
      Rajalingam, Sokkalingam; Bono, Awang; bin Sulaiman, J. (2012)
      Plastic injection molding is an important process to produce thin-shell plastic parts. However, the difficulty in adjusting optimum process parameters setting may cause defects of the injected molded parts such as shrinkage. ...
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