Processes of manufacturing Assignment Example | Topics and Well Written Essays - 750 words

Processes of manufacturing - Assignment Example 3. In casting, the grain structures are not aligned parallel to one another, but are random in alignment. In forming, the grains are aligned to one direction and are closely packed, which impacts greater strength. 4. Forging techniques used are open forging that involves heating the material and hammering it on an anvil; drop forging which involves forging material in a die using a hammer or impacting force; press forging, which involves the use of pressure to force materials into a die; roll forging, which requires the use of rollers and cold forging, which is best suited for smaller objects and involves extrusion through a die. 8. Pipe forming may be achieved through ram style bending, which involves resting the pipe at two internal points and having a rim pressing on the central axis to deform. Rotary draw bending involves drawing the pipe through stationery counter die into the required radius. Ring roll bending involves bending pipes to a large radius or circumferences. 4. Machines for bending angles include rotary-draw for tubes and pipes, push-roll machines, which accommodate roll formed and rotary –draw bends in a single operation and compression machines for heavy materials. 8. Deep drawing involves a work piece deforming in a larger dimension than its diameter. In shallow drawing, the depth of draw is much less than the smallest measurement of the opening. In flexible die, a flexible material replaces one of the dies. The method involves the use of materials such as rubber as the flexible material. 1. Injection and extrusion moulding used for small items, vacuum forming used to form thin sheets of plastic, press forming which uses positive and negative moulds with a plastic sheet between and blow moulding for bottles. 4. Advantages. It involves high speeds production, versatile in producing a wide range of products, good dimensional stability. Disadvantages. Delicate to