Raised or standard material in its original form coming off the expand work center.
The material elongates parallel to the feed direction creating a longer sheet in the feed direction and may reduce the size of the of the sheet opposite of the feed direction.
- FXM Straight Rolled
- Flattening parallel to LWD
- FXM Cross Rolled
- Flattening parallel to SWD
Shorts, expanded material to be flattened
This can be result of improper manufacturing and/or incorrect raw material length. These are open bonds that resemble a crow’s foot.
M/R, expanded metal mesh or walkway grating as it comes off the expander.
R/S, expanded metal mesh or walkway grating that is sheared or cut to a defined size without specific requirements. Sheet size can be held to tight tolerance. Likely to have open meshes.
B/S, expanded metal mesh or walkway grating that is sheared or cut to a defined size on the bond or knuckle. Sheet size is dependent on where the bond falls during the M/R process. Produces closed meshes.
BB/S, an older term not much used, expanded metal mesh or walkway grating that is sheared or cut to a defined size along a centerline on the bond or knuckle. Sheet size is dependent on where the bond falls during the M/R process. Produces closed uniform meshes.
This process can be achieved through a M/R expand.
It is important to keep this to a minimum, the dimension varies for each expand work center.
The distance between the upper and lower tooling. It is measured with shims and is varied depending on the expand work center and material being expanded.
The forming and cutting materials used to produce expanded mesh. Upper tooling does the forming and comes in many shapes and sizes. Lower tooling is a flat surface that acts as a shear. The upper tool passes in front of the lower tool much like scissors to produce mesh.