This set of Forming Assessment Questions and Answers focuses on “Types of Sheet Metal Die”.
1. The raw material for the rolling process is the output of the sheet metal forming process.
a) True
b) False
View Answer
Explanation: The raw material for the sheet metal forming is basically the output of the rolling process. IN the sheet metal forming process, flat rectangular solid sheets of standard sized are used and then the operations like piercing or blanking is performed on the metal sheets to obtain the desired output.
2. Which of the following methods of manufacturing is used for the production of appliances like the fridge and vacuum cleaner?
a) Forging
b) Deep drawing
c) Sheet metal forming and cutting
d) Rolling
View Answer
Explanation: Sheet metal forming and cutting processes are widely used for the manufacturing of home appliances like fridge, vacuum cleaner radio, toys, dryers etc. In the sheet metal forming processes, bending operation is takes place which form the metal and sheet cutting is used for shearing out the metal part from the large metal sheet.
3. It is not possible to use cutting dies for the metal drawing operations.
a) True
b) False
View Answer
Explanation: Cutting dies are mainly used for cutting the metal. They use shearing action for cutting the metal sheet. Various cutting dies are used such as blanking dies, piercing dies, perforating dies, notching dies, shaving dies and nibbling dies. And it is not possible to use cutting dies for the metal drawing operations.
4. What should be the appropriate thickness of the metal sheet when it is used as a raw material for the sheet metal operations?
a) 1 cm to 5 cm
b) 5 cm to 10 cm
c) 7.5 mm to 15 mm
d) 0.4 mm to 6 mm
View Answer
Explanation: The sheet metal forming and cutting operations are mainly performed on relatively thin sheets of metal. The thickness of metal sheet should be 0.4 mm to 6 mm to operate efficiently. If the thickness is more than 6 mm, then it is normally called as metal plate. The operations are generally performed as cold working.
5. Combination die is a die which combines cutting and non-cutting actions in the blanking process.
a) True
b) False
View Answer
Explanation: In a combination die, the cutting action like blanking or punching is combined with the non-cutting actions like forming which may further include bending, drawing and extrusion process. More than one operation can be possible in single stroke with the help of combination dies, but the die is more applicable for two operations only.
6. In the metal forming operations, forming dies are also called as progressive dies.
a) True
b) False
View Answer
Explanation: Forming dies and progressive dies are different from each other. Progressive dies can perform two or more operations in a single stroke in different stages in which mainly cutting operations like blanking and punching are performed. And forming dies are only used for forming operations.
7. Transfer dies are same as progressive dies in which piercing and blanking operations are performed.
a) True
b) False
View Answer
Explanation: In the metal forming and cutting operations, transfer dies are almost similar to progressive dies, the only difference is that the already cut blanks are fed from the station to station manually or by automation. In the operation, first the blanking is performed which is then followed by the piercing process.
8. Which of the following types of force is predominant in the sheet metal forming processes?
a) Shearing force
b) Compressive force
c) Tensile force
d) Indirect compressive force
View Answer
Explanation: Tensile force is the predominant force in most of the sheet metal forming operations as compared to the bulk forming which basically involves compressive forces. Due to the tensile stresses in the metal sheets, they may experience localized deformation which is further followed by cracking.
9. Die-punch clearance is mainly provided for inducing strength in the blank obtained by the metal sheet cutting.
a) True
b) False
View Answer
Explanation: In sheet metal forming or cutting operations, die punch clearance is present which basically used to govern the kind of finish obtained on the final part. Die punch clearance is very critical in operations like blanking and punching because it involves very close tolerances which give accurate and precise details on the finished part.
10. Which of the following materials is used for the manufacturing of dies and punches in the sheet metal forming?
a) Grey cast iron
b) Copper
c) Aluminium
d) Carbide
View Answer
Explanation: Carbide is mainly used for the manufacturing of dies and punches in the sheet metal forming operations. Sometimes tool steel is also preferred to maintain the lateral rigidity in the tools. Dies and punches must possess mechanical properties such as hardness, strength, rigidity, toughness, machinability etc.
Sanfoundry Global Education & Learning Series – Casting, Forming and Welding.
To practice all areas of Forming Assessment Questions, here is complete set of 1000+ Multiple Choice Questions and Answers.
If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]
- Apply for Mechanical Engineering Internship
- Check Metallurgical Engineering Books
- Practice Casting, Forming and Welding I MCQ
- Check Mechanical Engineering Books
- Check Casting, Forming and Welding II Books
