Work hardening also called cold working is one of the process of increasing the strength of the material.
Work hardening is a very useful strengthening mechanism that occurs particularly in metallic materials through plastic deformation.
17) the increase in hardness due to cold working, is called
Answer is:
work-hardening
Explanation:
Related Workshop Technology MCQ with Answers
Answer is:
all of these
Explanation:
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.
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.