Evaluating the Delamination in the Drilling Process of a Melamine Coated Medium Density Fiberboard (MDF)

Document Type : Research Paper

Authors
Masoud Rakhshkhorshid
Sayyed Mohammad Emam
Mohammad Lakhi
Saeed Ghahremani
Department of Mechanical Engineering, Birjand University of Technology, Birjand, Iran
10.22055/jacm.2019.30954.1800
Abstract
Medium density fiberboard (MDF) is an engineering product that is used in many industrial and general applications such as the furniture industry and kitchen cabinets. Generally, MDF products are generated by screw joints using the drilling process. However, the drilling process of the MDF panels leads to the delamination at the entrance and exit of the drill bit that should be controlled. In this work, the effect of the processing parameters including the feed rate and cutting speed on the delamination of melamine coated MDF is investigated. For this, two different tools with different tool geometry (a brad point drill bit and a commonly used twist drill bit) are examined. Image processing is used to measure the conventional delamination factor together with a new delamination factor referred to as area delamination factor for the drilled holes. It that the delamination value decreases with increasing cutting speed and increases with increasing feed rate. Though, there were some fluctuations in the results. The trend of changing the delamination respect to the investigated parameters was the same for both applied drill bits; however, the smaller value of delamination is obtained using the twist drill bit. Using the proposed area delamination factor, the effect of process parameters on the delamination is presented with higher magnitudes but with the same behavior. This, together with the ability of characterization of the water absorption of drilled holes has made the area delamination factor a more appropriate parameter to evaluate the delamination. The overall results are consistent with previously published works.
Keywords
Drilling
Medium density fiberboard (MDF)
Delamination factor
Area delamination factor

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Journal of Applied and Computational Mechanics
Volume 8, Issue 1
Winter 2022
Pages 1-10