Work hardening is that which occurs in metalworking processes that intentionally induce plastic deformation to exact a shape change. These processes are known as cold working or cold forming processes. The cold working of the metal increases the hardness, yield strength, and tensile strength.
18) cold working of metal increases
Answer is:
all of these
Explanation:
Related Workshop Technology MCQ with Answers
Answer is:
all of the above
Explanation:
Cold working is the plastic deformation of metals below the recrystallization temperature. In most cases, such cold forming is done at room temperature. The major cold-working operations can be classified basically as squeezing, bending, shearing and drawing.
Answer is:
is used for reducing the diameters of round bars and tubes by rotating dies which open and close rapidly on the work
Explanation:
Rotary swaging Is used for reducing the diameters of round bars and a tube by rotating dies which open and close rapidly on the work.
Answer is:
consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired from of the finished parts
Explanation:
Extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed through a die of the desired cross-section.
Extrusion is Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part.
Answer is:
cold peening
Explanation:
The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as Cold peening.