- Chemical Engineering Basics - Section 1
- Chemical Engineering Basics - Section 2
- Chemical Engineering Basics - Section 3
- Chemical Engineering Basics - Section 4
- Chemical Engineering Basics - Section 5
- Chemical Engineering Basics - Section 6
- Chemical Engineering Basics - Section 7
- Chemical Engineering Basics - Section 8
- Chemical Engineering Basics - Section 9
- Chemical Engineering Basics - Section 10
- Chemical Engineering Basics - Section 11
- Chemical Engineering Basics - Section 12
- Chemical Engineering Basics - Section 13
- Chemical Engineering Basics - Section 14
- Chemical Engineering Basics - Section 15
- Chemical Engineering Basics - Section 16
- Chemical Engineering Basics - Section 17
- Chemical Engineering Basics - Section 18
- Chemical Engineering Basics - Section 19
- Chemical Engineering Basics - Section 20
- Chemical Engineering Basics - Section 21
- Chemical Engineering Basics - Section 22
- Chemical Engineering Basics - Section 23
- Chemical Engineering Basics - Section 24
- Chemical Engineering Basics - Section 25
- Chemical Engineering Basics - Section 26
- Chemical Engineering Basics - Section 27
- Chemical Engineering Basics - Section 28


Chemical Engineering Basics - Engineering
Q1: Machinability of hard alloys and tool steels is improved byA spherodising
B annealing
C tempering
D normalising
ANS:B - annealing Annealing is a heat treatment process used to soften metals, relieve internal stresses, and improve their ductility and toughness. It involves heating the metal to a specific temperature (usually above its recrystallization temperature) and then allowing it to cool slowly in a controlled manner. This process helps to refine the microstructure of the metal, reduce hardness, and promote the formation of a more uniform grain structure. While annealing is beneficial for improving the formability, ductility, and toughness of metals, it may not directly improve the machinability of hard alloys and tool steels. Machinability refers to the ease with which a material can be cut, drilled, or shaped using machining tools such as lathes, milling machines, or drills. Hard alloys and tool steels are often specifically engineered to have high hardness and wear resistance, which can make them challenging to machine. Improving the machinability of hard alloys and tool steels typically involves processes such as spheroidizing, which softens the material and reduces its hardness, making it easier to machine. Therefore, while annealing may have indirect effects on machinability by altering the material's properties, it is not typically used specifically for improving the machinability of hard alloys and tool steels. Instead, processes such as spheroidizing or other specialized machining techniques are employed for this purpose. |


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