摘要:

Following a brief introduction to the history of electrochemical grinding this paper concentrates on two surfacing techniques; peripheral grinding and face grinding with table traverse. Faraday's Laws are fundamental to any electrochemical process but in ECG the mechanical contribution to metal removal is equally significant. There are many more operating parameters than with conventional grinding and all interrelate to affect efficiency, accuracy and controllability. The supply and distribution of electrolyte solution to the working zone is particularly important not only with regard to removal rate but also unwanted side-effects. Advantages offered by ECG include elimination of mechanical and thermal cracking, no induced stresses, considerable reduction in wheel wear, independance of material hardness and no burrs. The process is therefore very important and the authors' aim is to encourage activity in an area of technology where the results of interdisciplinary research and development can still have serious industrial significance.

DOI:10.1049/tpe.1976.0080

出版商:IEE    

年代:1976

数据来源: IET

摘要:

The use of a visual record computer as a general aid to the administration of a medium sized foundry is described. In addition to the more normal uses of a computer, such as payroll preparation and other accountancy functions, the whole administration has been designed from first principles to use the computer to the fullest extent. Every administrative function from receipt of an enquiry through works documentation to eventual dispatch and invoicing has been included in the system, and a full range of management information is also supplied. The latter includes the ability at any time to provide a complete statement of the current work load in total and in detail on every manufacturing centre, every order is shown in the week when delivery is due, and the resultant load in moulding time and core making time per week per manufacturing centre is also shown. The author makes the point that apart from very definite cost advantages in using a computer based administration, the speed and accuracy of reaction to inevitable business changes are advantages that are very real in today's economic climate.

DOI:10.1049/tpe.1976.0081

出版商:IEE    

年代:1976

数据来源: IET

摘要:

Flowturning differs from conventional metal spinning not only in the method of manufacture but in its influence on the mechanical properties of the component produced.The basic principles of the two processes are described and the simple shear analogy of flowturning is explained.The effect of flowturning on the mechanical properties, accuracy and surface finish of the workpiece is discussed, whilst the need for, and development of a flowturnablity test is outlined.Finally, variation from the idealized condition, the mode of fracture of the workpiece and the effect of the many process variables on the forces in the plastic zone of the flowturned component are all examined.

DOI:10.1049/tpe.1976.0082

出版商:IEE    

年代:1976

数据来源: IET