question_answer

In drawing operation, proper lubrication is essential for which of the following reasons.

1. To improve die life

2. To reduce drawing forces

3. To reduce temperature

4. To improve surface finish

Select the correct answer using the code given below:

A) 1 and 2 only                 

B) 1, 3 and 4 only

C) 3 and 4 only                 

D) 1, 2, 3 and 4