Do you know,What is fermentation ??
Selection of Manufacturing Process
How will you select a particular process for manufacturing process ?
How many types of manufacturing processes are ?
So, Let’s discuss on it..
The knowledge of manufacturing processes is of great importance for a design engineer. He or she need to focus on each and every aspect of the entire process. Just like —
- Primary shaping processes: The processes used for the preliminary shaping of the machine component are known as primary shaping processes. The common operations used for this process are casting, forging, extruding, rolling, drawing, bending, shearing, spinning, powder metal forming, squeezing, etc.
- Machining processes. The processes used for giving final shape to the machine component, according to planned dimensions are known as machining processes. The common operations used for this process are turning, planning, shaping, drilling, boring, reaming, sawing, broaching, milling, grinding, hobbing, etc.
- Surface finishing processes. The processes used to provide a good surface finish for the machine component are known as surface finishing processes. The common operations used for this process are polishing, buffing, honing, lapping, abrasive belt grinding, barrel tumbling, electroplating, superfinishing, sheradizing, etc.
- Joining processes. The processes used for joining machine components are known as joining processes. The common operations used for this process are welding, riveting, soldering, brazing, screw fastening, pressing, sintering, etc.
- Processes effecting change in properties. These processes are used to impart certain specific properties to the machine components so as to make them suitable for particular operations or uses. Such processes are heat treatment, hot-working, cold-working and shot peening.
Do you know, How does Optical Fibre work ??
Let’s look a glimpse of various manufacturing processes –
Most of the metals used in industry are obtained from ores. These ores are subjected to suitable reducing or refining process which gives the metal in a molten form. This molten metal is poured into moulds to give commercial castings, called ingots.
The castings are obtained by remelting of ingots in a foundry furnace and then pouring this molten metal into metal or sand moulds.
It is the process of heating a metal to a desired temperature in order to acquire sufficient plasticity, by operations like hammering, bending and pressing, etc. to give it a desired shape.
What are Lubricants exactly ? How do Lubricants work ?
Hot Working :
The temperature at which the new grains are formed in the metal is known as recrystallisation temperature.
The working of metals above the recrystallisation temperature is called hot working. This temperature should not be too high to reach the solidus temperature, otherwise the metal will burn and become unsuitable for use.
Cold Working :
The working of metals below their recrystallisation temperature is known as cold working. Most of the cold working processes are performed at room temperature. The cold working distorts the grain structure and does not provide an appreciable reduction in size. The extent to which a metal can be cold worked depends upon its ductility. The higher the ductility of the metal, the more it can be cold worked.