Hello everyone, I am Professor H.R. Ayurvedic. In this video, we are going to see one of the special farming process that is a metal spinning process. What is metal spinning process? Spinning is a process where in a circular blanks are formed into an axial symmetrical profiles using a rigid rollers tool which forces a blank onto a rotating material. Now this process is carried out by the applying various pressure to deform work actually and readily over the surface of the parts. In this process, a circular blank is tightly held against the mandrel using a support held in a tailstock. The mandrel is having the shape which is to be formed on the blank. Both the mandrel and circular blanks are rotated. The spinning tool usually a rigid roller tool presses the blank against the mandrel, establishing the blank to take the shape of the mandrel. The tool presses the workpiece over the mandrel either manually or hydraulically to be replicate the profile of the mandrel as shown. As the tool is directly applied on the blank, the force required for the forming are lower as compared to the conventional press forming. This results in the reduction of the machine and the tool cost. The process variant are manually spinning, power spinning and tube spinning. Manual spinning is a preferred for low volume production and is generally carried out at the room temperature. However, the process is carried out at elevated temperature for the large thickness workpiece and the workpiece having low ductility. Spin produced by the spinning process are high mechanical properties and better finish as compared to the other machining process. Next is the important parameters. Now, parameters which directly affect the quality of the product are feed ratio. It is a ratio of the roller feed to the spindle speed. Next is a spindle speed. It is another important process which spring force and deformations are depend on the spindle speed. Next is a roller part. Proper part should be product, roller design, proper design or optimum design should be considered and spinning ratio which should be lower. Now we have to see the major advantages of the process. The setup time required is very low as compared to the other machining process. Lower tooling and also the lower equipment cost. Process is applicable to both small as well as large volume production. Spinning can be combined with the other production process. Also the production cost is comparatively very low as compared to the other forming process. Limitations. Size and shape limitation is there as specific size and specific shape can be manufactured. Dimensional accuracy is depend on the profile of the spindle. As spindle has some error, it will be directly affect on the product accuracy. For the large technique workpiece, power spinning is required. It cannot be done with help of manual spinning process and last roller design and roller part are very most important parameters while designing the concept. Application. The process used to manufacture deep part of circular symmetry such as funnel, flywheel, scope, upper, curve surface, revolutionary rocket cones etc. Thank you. Thanks for watching.