22 Questions
What is the purpose of grinding in the metal cutting operation?
To obtain very high dimensional accuracy
Which type of grinding machine is used to remove excess metal from cast parts and welded joints?
Hand grinding machine
What is the accuracy level of the grinding process mentioned in the text?
$0.000025mm$
Which type of grinding machine is used to finish parts to very accurate dimensions?
Precision grinding machine
Which type of grinding machine is used for removing stock with no reference to the accuracy of results?
Hand grinding machine
What is the main cutting tool used during the grinding operation?
Abrasive wheel
Which natural abrasive has a greater hardness and abrasive action than sandstone?
Corundum
What is the manufacturing process for silicon carbide abrasives?
Mix silica, powdered coke, salt, and sawdust in a long rectangular electric furnace
What is the trade name for silicon carbide abrasives?
Carborundum
Which natural abrasive is used in making grinding wheels for cemented carbide tools?
Diamond
Which abrasive material has a higher toughness compared to silicon carbide?
Aluminium oxide
What does the grade of a grinding wheel refer to?
The resistance the bond offers to dislodging of abrasives
What term refers to the relative spacing occupied by the abrasives and bond in a grinding wheel?
Structure
What is the first element in the Indian standard marking system for grinding wheels?
Manufacturer's abrasive type symbol
What is the main purpose of cylindrical grinders?
To grind external surfaces
Which type of surface grinder leaves a criss-cross pattern of grinding scratches on the work surface?
Vertical spindle and reciprocating table type
What is the main operation involved in removing excess material from metal parts using a grinding wheel?
Grinding operations
Which type of grinding machine is used specifically for accurately grinding gears?
Gear grinding machine
What is the main characteristic of a grinding wheel?
It is a multi-tooth cutter with hard abrasives having sharp edges
Which category do grinding wheels fall into based on their construction?
Solid grinding wheels
What is the purpose of a diamond tool dresser in taper grinding?
To true the face of the grinding wheel to the required angle
Which abrasive is obtained from the Earth's crust and is used to grind softer materials only?
Emery
Test your knowledge on the introduction to grinding machines and the grinding process, which involves metal cutting using abrasive wheels for high dimensional accuracy. Explore the importance of grinding in machining operations.
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