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For some time now, the use of diflusion bonding technology has been growing significantly every year. Reasons for the increased use nowadays are the capability to join large surfaces without additional filler material and thus to achieve a high joint strength. The joint strength can be as high as the strength of the base material for similar material joints. For corrosion resistance, it is important to have the same material everywhere. In diflusion joining, corrosion resistance is not reduced locally compared to brazing. In addition to the joint properties, the latest developments in the field of diflusion welding systems, such as better process control or higher precision, contribute both to the growth and to the increase in the available capacity in the workshops. Due to changed framework conditions, for example as a result of social or political requirements, existing products have to be adapted (for example scaled) or newly developed. Examples are mobility and energy consumption as well as the increased use of electronic devices. Diflusion bonded parts are used in lithography systems for semiconductor production, for gas cooling during compression or for molding plastic parts for automotive interiors. The paper deals with the recent development of diflusion welding equipment and applications of the solid state joining process "diflusion joining". [ABSTRACT FROM AUTHOR]

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Copyright of Schweissen und Schneiden is the property of DVS Media GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Schweissen und Schneiden is the property of DVS Media GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Due to rising demands on the quality and of the final plastic product, it becomes increasingly important to influence the thermal behaviour of the tools (e.g. variothermal tempering). Due to this fact the geometry of heat-control channels becomes very complex, leading to a change in the manufacturing strategy of large scale tools – manufacturing of a layered structure and joining to the complete component. Even though smaller parts can be joined by brazing, diffusion bonding emerges as the promising method for large scale, highly stressed parts as moulds or distribution systems etc. However, in order to apply diffusion bonding for such application, it becomes necessary to understand the major influences and up-scaling effects. In the present paper, first results of a collaborative research between joining and tooling institutes and companies will be shown. The aim of this work is to use the understanding of process-relevant influences for deriving a suitable diffusion bonding related manufacturing chain. Combining numerical simulations for the design of the channels and tools with the thermal and mechanical behaviour of the parts during bonding is one major part to gain deeper insight and knowledge for diffusion-bonding friendly design and processing. The data will be used for a tooling design framework, which can be used for several new developments without long-term fundamental research. A validation and data gathering will be carried out by the means of bonding samples up to large sizes with varying design and manufacturing history, generating broad experimental data for up-scaling tasks. Microstructural changes will be analysed and set into relation with the simulations and applicatory requirements. [ABSTRACT FROM AUTHOR]

Copyright of Schweissen und Schneiden is the property of DVS Media GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Schweissen und Schneiden is the property of DVS Media GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)