On the Mechanical Pulverizing for Metals by a Specially Designed Eddy Mill

A special eddy mill, in which metals are crushed chiefly by shearing due to mutual friction was designed and the crushing experiment for various metals and alloys was performed, and many important results on following subjects were obtained ; 1. Relation between work amount for pulverizing and pulverizing time. 2. Relation between work amount for crushing and particle size of material. 3. Variation in the particle size distribution of mill product for the treating time. 4. Microphotographs of pulverized powders. 5. Oxidation of pulverized powder and temperature rise in pulverizing

A Study on Prerequisite Steps and Decision Making to Increase a Provability of Innovation in Mechanical Engineering SMEs

This study is a case study of two Japanese SMEs, Y and O, that have created core technologies through mechanical engineering, achieved sustainable growth through technological innovation, and achieved niche top company status. Companies need to generate innovation to achieve sustainable growth, and various studies have been conducted on innovation models. It has also been shown that innovation is not a one-off event but a process and that it is important to manage the process appropriately. In this context, we propose a four-stage process, beginning with the "Generating value" step as a framework for the innovation process of a company aiming for sustainable growth. To increase the certainty of innovation, management needs to understand the readiness of the innovation process to determine the decision to execute the process. Accordingly, this study proposed a method to check the readiness of the innovation process by creating a "state diagram of sub-elements for the prospect of generating innovations" to help management determine the decision to execute the process before the "Generating Value" step of the innovation process. In order to confirm the validity of the state diagram, we examined how the management of Company Y\u27s refrigerated vehicle business and Company O\u27s mower business have judged their decision-making to implement the innovation process, based on a review of company documents and interviews with the management. The results of the comparative verification between the state diagrams and actual results are reporte

Formulating Growth Guidelines in the Innovation Process: The Case of Mechanical Engineering SMEs

In Japan and Germany, the mechanical engineering industry is a significant industrial sector, and the growth of small and medium-sized enterprises (SMEs), which constitute a large proportion of the number of firms and employees, has a considerable impact on a country\u27s growth. Innovation is an effective approach for firms to achieve growth. In this study, we propose that the phase of formulating growth guidelines, which include three factors: growth objectives, scope, and directions for growth, should be establish before the phase of implementing the innovation process. A new scope framework is constructed and a method for evaluating the consistency of the growth guidelines is presented. The method is applied to Japanese mechanical engineering SMEs that have achieved growth through innovation, and the applicability of the framework and the consistency of the growth guidelines are confirmed. This study provides an idea of growth guidelines that can be used to guide decision making in implementing the innovation proces

On the Mechanical Disintegration of Metal by a Stamp Mill

A disintegration experiment was made on some metals of different property by using a stamp mill, which was especially designed by one of the authors for the present work. The relationships between the work and the time, the mechanical property and the size of the material, and between the particle size distribution of the disintegrated product and the disintegrating time, were studied. The microscopic observation was also carried out on the all of the products during disintegration. On the basis of the experimental results the disintegration process and mechanism were considered