Cross Rolled Plates
Cross Rolled Plates
(OP)
Hello all
what is a cross rolled plate?
What are its applications (Under what circumstance one specifies cross rolled plates)?
Is there an ASTM/BS/ BSEN standard that deals with such plates?
Can a SA 516 Gr 60 plate be a cross rolled plate?
what is a cross rolled plate?
What are its applications (Under what circumstance one specifies cross rolled plates)?
Is there an ASTM/BS/ BSEN standard that deals with such plates?
Can a SA 516 Gr 60 plate be a cross rolled plate?





RE: Cross Rolled Plates
There's nothing in the ASME spec to my knowledge that prohibits this fabrication practice. As long as it meets the chemistry, mechanical, microstructural and finish requirements of the spec, how it gets there is not specified.
RE: Cross Rolled Plates
Yes, SA 516 Grade 60 can be specified cross rolled provided you state this requirement for the mill.
RE: Cross Rolled Plates
One ready exaple though not so simple is the high silicon sheets used in electrical transformer. They are what is commonly called as non grain oriented . This property minimises the eddy current losses.
RE: Cross Rolled Plates
Is there a specific application where one comes across the requirement to use cross rolled plate.
RE: Cross Rolled Plates
RE: Cross Rolled Plates
1. Cross rolling can be used to increase the width of the plate for certain forming applications.
2. Repeated cross rolling where the plate is turned transverse to the previous rolling direction can be used to reduce directionality or spread in mechanical properties related to the direction of forming - mechanical properties in the longitudinal direction versus transverse direction. A normalization heat treatment (rapid cool or quench) will provide a finer grain structure with increased mechanical properties thru thickness. However, the directionality of the mechanical properties still remains between the longitudinal (rolling) and transverse directions in the rolled plate versus cross rolled plate.
3. Cross rolling increases cost
So, you have to decide if either benefits in 1 and 2 mentioned above offset the increase in cost.
RE: Cross Rolled Plates
= = = = = = = = = = = = = = = = = = = =
Corrosion, every where, all the time.
Manage it or it will manage you.
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: Cross Rolled Plates
Texture correspond to orientation of grains in polycrystal material.
Simple example, in strongly textured Al sheet (for ex. 80% of grains are oriented with their (100) axis parallel to normal of sheet plane), there will be earing defect after deep drawing.
Cross rolling can correspond to 90° orientation change at each rolling pass, or 45° if necessary.
You can always see this website about earing problem:
http://ne