Using two levers, at the middle point, the two ends can move relatively with a pin. As long as the tail end is operated by hand, the other end can hold the object.
In order to reduce the user's strength in operation, according to the lever principle in mechanics, the handle of pliers is usually made longer than the pliers head, so that a stronger clamping force can be obtained with a smaller force to meet the use requirements.
Extended data:
Pliers generally include wire cutters, needle-nosed pliers and oblique-nosed pliers. It is used for clamping or bending thin and cylindrical metal parts and cutting metal wires, and its side cutting edge can also be used for cutting thin metal wires.
1, material: pliers are made of high-quality chrome vanadium steel.
2. Forging: die forging and hot forging process are adopted.
3. Heat treatment: adopt computer-controlled heat treatment technology to ensure the stability of hardness.
4. Surface treatment: surface polishing treatment.
5. Features: The cutting edge is subjected to a special heat treatment process to maintain the stability of long-term cutting work.
6. Hardness: HRC 40 to 48.
7. Shearing knife: in line with DIN standard.
Pliers are generally made of carbon structural steel. They are first forged and rolled into the shape of pliers blanks, then processed by metal cutting such as grinding, milling and polishing, and finally heat treated.
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