Processing Stability Analysis of Wire Cut Electric Discharge Machine with High Speed

Abstract

In this article, unstable factor analysis is done in Wire cut electric discharge machine with high speed (WEDM HS), which focus on effect of processing Stability from electrical processing parameters, machine parameters, electrode wire, cutting fluid and conductive block, and how to adjust and excluding factors in order to enhance WEDM processing stability ,ensure machine parts surface quality, dimensional accuracy and processing efficiency.

Life Cycle Assessment of Environmental Impacts and Total Cost of Power Cable

“…Generally, the power cable comprises the interior conductor part and the exterior insulation part with diverse raw materials which affect the environment through each phase of lifetime respectively with some pollutants emission. Firstly, the study obtains the criteria of environmental impacts of raw materials per ton including quantified pollutant index such as the energy consumption, the greenhouse gas, the waste water and the solid waste at each phase of life cycle [12][13][14][15][16][17][18][19][20][21][22]. Secondly, both determination of classifying raw materials and evaluation of the corresponding weight belongs to each part of raw materials are demonstrated orderly.…”

“…Estimating the Weights of Raw Materials for Power Cable. Since the power cable mainly contains metal conductor like copper, aluminum, or steel, insulated layer such as cross-linked polyethylene, filling layer like polyethylene, wrapping tape such as polyester, or polypropylene, armoring steel tape, and sheath like polyvinyl chloride, etc [12][13][14][15], the weight of each part of materials can be approximately estimated by the following representations.…”

“…Although, most of recent studies on power equipments mainly focus on its economic operation [2][3][4][5][6][7][8]10], the relevant discussions with respect to its influences on environment in life cycle are rarely found [11][12][13]. Additionally, the decision-making for conventional purchasing of power equipments is merely determined by the initial investment, regardless of the environmental factors in lifetime and the operation cost.…”