Hardening process for the surface of materials. As an example, the hardening of carbon steel is accomplished by first heating the steel to approximately 1200 degrees F. and then it is immersed in powdered carbon. When some of the carbon is absorbed into the molecular structure of the steel, the surface or face of the steel is hardened.
Face layer
Also referred to as the face ply, it is the outer layer when there are two or more layers. Face Line Lines that are made of strong string, which is stretched out and attached to staked boards, so that masons can follow the straightness of it when building masonry walls.
Face nailing
Nails, which are hammered at right angles (perpendicular) to the work surface. Also called direct nailing.
Face of weld
The side of the material where the weld was applied, which has the exposed weld.
Face plate
Face plate holds the work to be turned on a lathe. The plate is then fastened to the lathe headstock, which is the part of the lathe that turns the work.
Face ply
Also referred to as the face layer, it is the outer layer when there are two or more layers.
Face reinforcement
Additional weld material, which is added to the face of the weld.
Face shell
Front of a concrete block.
Face shield
Coverings, designed to protect the entire face of a worker when a sander, grinder, etc. are being used. A transparent eye panel allows the worker to be protected from small particles, which are being thrown, while being able to see.
