Machine Parts

Difference between ideal fuel cell and actual fuel cell is given below: Actual fuel cell Ideal fuel cell In actual fuel cell the transport of oxidizer electrolyte fuel and product from electrode. Proper proportion and maintained. And Surface is not proper proportion and complex. System is simple. Homogeneous reaction turbine place for three face of oxidizer a liquid fuel electrode and solid electrode.  No homogeneous reaction takes place. The diffusion process at the electrode surface is quiet complex. In ideal fuel cell the diffusion process at the electrode surface is quiet simple. Too much liquid or gas enters the electrolyte and reduce the surface. No liquid gas enters. In an actual fuel cell activation energy reduces the work of cell. In ideal fuel cell there have no activation energy. In an actual

The requirements of machine tools are given bellow: 1.       Strength static is high. 2.       Dynamic rigidity. 3.       Shape and layout of machine tool should be a.       Facilitate easy chip removal. b.       Machining operation should be easier. c.       Observation of cutting operation should be safe. d.       Assembly should be easy and dismantling. e.       For maintenance accessibility should be easy. 4.        Economic consideration. 5.       Transportation and installation should be easiest. 6.       Aesthetic appeal. 

Introduction of CNC Lathe Machine: CNC means Computer Numerical Control. A CNC lathe machine attached to a micro-computer where all instruction is stored as program.   Making CNC lathe machine more adaptable than manual control lathe machine which is also handle much of the control logic of the machine by computer.  Working Procedure of CNC Lathe Machine: CNC program give command the CNC lathe machine which direction following all work is done. By getting command form CNC program drive motor rotate as a fixed amount where linear motion occurred of ball screw as a result turn drive the ball screw. A fixed number revolution is occurred in ball screw which is ensured by a feedback device. 

Packing, seal and gasket resists the flow of fluid from machinery face, head, joint and machinery gap or clearance. Packing materials: Fiber, asbestos, cotton, synthetic materials, plastic, Teflon, graphite etc. Packing structure: Twisted, Braided and Consolidated. Gasket:             A gasket is a mechanical seal that fills the space between two mating surfaces, generally to prevent leakage from or into the joined objects while under compression. Gaskets allow " less-than-perfect " mating surfaces on machine parts where they can fill irregularities. Gaskets are commonly produced by cutting from sheet materials, such as gasket paper, rubber, silicone, metal, cork, felt, neoprene, nitrile rubber, fiberglass, or a plastic polymer (such as polychlorotrifluoroethylene)                                                                                                Figure : Gaskets Name of the gasket                       uses