Manufacturing And Materials Flashcards
The majority of metals and some other materials fall into a class that is often referred to as
Engineering materials
Engineering materials typically have relatively high values of which of the following characteristics
Hardness, strength, toughness and durability
Early manufacturing was primarily devoted to products for which of the following sectors?
Agricultural and military goods
Most manufacturing jobs directly connected with the product require that the technician or operator have a specific knowledge about certain phases of rhe work and __________of related area.
General knowledge
To ensure that the final product has the quality and reliability expected from the design, qualified personnel must
Examine the product at each stage of production
Communication between designers and production personnel relies heavily on both parties understanding the
Nomenclature used in the area of concerns
Melting of a material and control of its shape while it solidifies is referred to as
Casting
Reshaping of a material in the plastic or semisolid form is often called
Forming
Shaping by metal removal in the solid state is commonly performed to produce product shapes. If the removed material is in chip form, the process is
Machining
The metallurgical changes that take place during casting are of the same nature as those that take place in
Fusion welding
Why do most manufactured articles consist of assemblies of a number of separate parts
Finished products that are constructed from a single piece of material may not meet design requirements and cannot be practically produced at a reasonable cost.
Most of the metal that is refined is first cast as
Pig or ingot
A designer must be familiar with both the functional requirements of the product and the probable market demands for various levels of quality and appearance. They must also be familiar with
The mechanical properties of the material they choose to manufacture the product
Proper application of inspection methods and interpretation of their test indications relies upon
Qualified nondestructive testing personnel
In general, the most economical method for producing complex shape changes with no material volume change is
Casting
