Study on Nature of Material Flow and Transform Model of Material Flow Development State

In accordance with the material flow theory put forward by the authors, this paper divides the nature of material flow into inherent nature and non-inherent nature. The quantitative and qualitative changes of the non-inherent nature of material flow determine the development states of material flow, which mainly manifest three states, namely, traditional material flow, modern material flow and transform of the traditional material flow to modern material flow. To further reveal the change rule of material flow development states, this paper takes establishment of three-dimensional structure model of material flow state as the theoretic foundation, express it with the ordered triple M _F=SMTE, C, V(t). It reflects the material flow state changes with non-inherent nature SMTE about V(t) of C. The description and judgment for this change can be achieved by establishing elementary correlation function with transformation strategy on the extension set. Finally, with examples, the paper presents the methods and process of extension recognition of the material flow development state for the enterprises