Serrated blade

A serrated blade is a type of blade used on saws and on some knives or scissors. It is also known as a dentated, sawtooth, or toothed blade.

A serrated blade has a cutting edge. By having less contact area than a smooth blade, the applied pressure at each point of contact is relatively greater and the points of contact are at a sharper angle to the material being cut. This causes a cutting action that involves many small splits in the surface of the material being cut, which cumulatively serve to cut the material along the line of the blade.

单词	Unserrated
释义	Unserrated 英语百科 Serrated blade A serrated blade is a type of blade used on saws and on some knives or scissors. It is also known as a dentated, sawtooth, or toothed blade. A serrated blade has a cutting edge. By having less contact area than a smooth blade, the applied pressure at each point of contact is relatively greater and the points of contact are at a sharper angle to the material being cut. This causes a cutting action that involves many small splits in the surface of the material being cut, which cumulatively serve to cut the material along the line of the blade.
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Unserrated

Serrated blade