Rolling

Question 1

What are the possible effects of rolling with insufficient camber?

Answer 1

Thicker centre (long edge)
Thicker edges than the centre (Lateral spread)

Question 2

If insufficient camber has been used in rolling and the sheet exhibits long edges, what is the stress pattern

Answer 2

residual stress pattern of compression at the edges and tension in the centreline

Question 3

If insufficient camber has been used in rolling and the sheet exhibits lteral spread, what is the stress pattern

Answer 3

Compression on the centreline and tension on the edges

Question 4

what are the 3 types of defects you could expect from using a roller with insufficient camber

Answer 4

cracking, warping, and edge wrinkling/crepe-paper effect/wavy edge