Max Regan Flashcards
why is cold rolling used to create steel body panels?
cold rolling involves passing the steel through rollers at room temperature or slightly above room temperature. This process is used to produce thinner and precise steel sheets with better surface finish and dimensional accuracy.
why isn’t hot rolling used to create steel body panels?
During hot rolling, the steel undergoes significant deformation, resulting in a recrystallized microstructure with larger grains. This process is faster and more cost-effective for shaping steel compared to cold rolling. However, it can also result in less precise dimensions and surface finish, and the final product may require additional processing to achieve the desired properties.
why is MIG welding and TIG welding used in the production of train cars?
MIG welding (metal inert gas) is used for Its ability to be used on a variety of steel thicknesses, making it ideal for welding different parts of the train car, including thin sheet metal and thick structural components. TIG (Tungsten inert gas) welding is used for producing high-quality welds with excellent appearance and strength, which is integral for the structural integrity of train car components that are made of aluminium.
Why is forging used for the manufacturing of crankshafts in automotive vehicles?
Forging is used for how it manipulates the grain structure of metals, in the case of crankshafts it is used for its aligned grain low which enhances strength and fatigue resistance, it also reduces porosity, meaning it reduces the amount of voids in the metal, additionally reducing the chance of manufacturing defects.
Why is extrusion used in the production of bumpers and impact beams?
extrusion is used for this purpose for its properties of grain flow alignment, in which the grains are deformed and elongated towards the extrusion direction.
why would quenching be used for the production of the chassis of a vehicle?
quenching is used to harden the steel to make the supporting members stronger and more impact resistant.
why would powder forming be used for the production of many automotive vehicle parts?
powder forming is used for the production of many parts of cars including gears and camshafts. it results in a homogenous microstructure, which has better overall strength due to its uniformity.
why would hardening be used in the production of transmission systems in vehicles
hardening would be used in transmission systems to prevent various damaged that come with wear that include chipping, bending and breaking.
why is normalizing used in part of the production of structurally supporting components in aircraft?
Normalizing is used to undo the stress applied by work done on the planes parts so they are more resilient to impact and cyclically applied loads.
why are suspension springs in the automotive industry tempered?
Suspension springs are tempered to influence them to hold their shape, which is what the function of the spring is to do. it rebounds when force is applied.
what properties do ceramics have that makes them ideal for engine parts such as spark plugs?
ceramics are used for components like spark plugs for their insulating properties and replicability.
what process do windshields go under to prevent shattering when impacted?
windshields are laminated to prevent shattering from most impacts. this process is when a sheet of plastic is put in between two window panes which gets the properties of the plastic with he stiffness of glass.
What does CNC stand for in terms of materials for the aerospace industry?
Ceramic and carbon matrix composites
Manufacturing processes for ferrous metals (powder forming)
Powder forming is the process of creating metal powders and then blending and compacting the mixture in a die. They are then pressed into the mould to form the shape required and the shapes are then heated and sintered in an atmosphere. During sintering, the pressed powder particles fuse together, forming metallurgical bonds. After the item is sintered at a temperature to allow atoms to diffuse between grains, producing a homogeneous grain structure.
