Topic
Material flow
About: Material flow is a research topic. Over the lifetime, 3050 publications have been published within this topic receiving 36844 citations. The topic is also known as: material stream.
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TL;DR: In this paper, the authors describe an application of physical system theory to the modelling and analysis of material flow and the productivity of a batch-processing engineering company which produces a large variety of electrical motors.
13 citations
TL;DR: In this article, a methodology for the design and operation of a just-in-time coordination mechanism to control the flow of materials in the supply chain is proposed, and a new supply chain coordination mechanism is then proposed.
Abstract: Purpose – The aim of this article is to propose a methodology for the design and operation of a just‐in‐time coordination mechanism to control the flow of materials in the supply chain.Design/methodology/approach – A literature review of the problem is presented and a new supply chain coordination mechanism is then proposed.Findings – The paper reveals that the one aspect not deeply studied yet in the supply chain management is their short‐term control. A simple kanban coordination mechanism demonstrates that is practical in the flow coordination of materials among the different nodes (companies) in a supply chain.Practical implications – This paper shows recent approaches in the supply chain context, useful to companies looking forward new opportunities in coordination systems for the supply chain.Originality/value – The paper begins with a review of previous research in the material flow control in the supply chain. The authors then propose a new mechanism and an optimization methodology to deal with th...
13 citations
TL;DR: In this paper, the effectiveness of locally adapted tribological conditions using workpiece-and tool-sided tailored surfaces within SBMF processes was investigated and it was shown that the local adaption of workpiece and tool surface increased the heights of functional elements.
Abstract: Due to current ecological and economic developments there is a growing demand for functional components with complex and closely tolerated geometrical features. Conventional sheet and bulk metal forming operations leads to products which are often limited in their geometrical and functional variety. A promising approach is the process-class sheet-bulk metal forming (SBMF). SBMF is characterised by the application of bulk and sheet forming operations on sheet metals [1]. This combination leads to locally and temporally varying load conditions regarding stress as well as strain states. In order to get high quality parts, controlling the material flow is of major importance. Modified Surfaces, so-called tailored surfaces represent an innovative approach to control the material flow. The objective of the current study is the experimental investigation of the effectiveness of locally adapted tribological conditions using workpiece-and tool-sided tailored surfaces within SBMF processes. The study has shown that the local adaption of workpiece and tool surface increased the heights of functional elements. Thus, using locally adapted tribological conditions leads to an improvement of the quality of the produced gearing components. In a further step the influence of surface modifications on the surface properties of the manufactured components are analysed. Additionally, investigations regarding the wear behaviour of tool-sided surface adaptions lead to the assumption, that the effectiveness of tailored surfaces is reduced during the operating time of the tools.
13 citations
Patent•
17 Sep 2010
TL;DR: In this article, a method and device for spreading a material flow onto a field is described, in which the material flow emerging from a chopping mechanism of a chopping and spreading device, in particular a combine mounted straw chopper on a combine harvester, is conveyed to at least one guide element which is situated transversely to the longitudinal axis of the chopping mechanism.
Abstract: In a method and device for spreading a material flow onto a field, the material flow emerging from a chopping mechanism of a chopping and spreading device, in particular a combine mounted straw chopper on a combine harvester, is conveyed to at least one guide element which is situated transversely to the longitudinal axis of the chopping mechanism, the guide element accelerates the material flow and conveys it to at least one downstream spreading unit, the material flow emerging from the at least one guide element is conveyed by a plane of conveyance, in which the material flow enters the at least one guide element, onto a spreading plane situated below the plane of conveyance; in the spreading plane, and the material flow is distributed by the at least one spreading unit onto the field.
13 citations
TL;DR: In this article, material flow analysis of forged disk-like gearwheel blanks has been carried out and the results of the analysis are compared with FE-analyses of the forming process.
Abstract: During the manufacture of disk-like gearwheel blanks made of 20MnCr6 (SAE 5120) a characteristic distortion behavior was observed which has been related to the forging process. The steel showed a typical banded structure and a distribution of chemical elements (segregations) perpendicular to rolling direction. When analyzing the micrographs of the forged gearwheel blanks, a significant variation in the material flow was found. In order to clarify the cause of the observed material flow variations and to determine its impact on the distortion potential of the disks, a twofold approach has been applied: a) to determine and to describe the material flow characteristics on basis of micrographs of forged disks and b) to carry out FE-analyses on the theoretical material flow and its parameters. In this contribution results of the material flow analysis are presented and compared with FE-analyses of the forming process.
13 citations