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How are diagonal cutting pliers manufactured?

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Manufacturing processes (drop forging, injections moulding, induction hardening) of diagonal side cutting pliers, cutters, nippers. Diagonal cutting pliers are manufactured using drop forging, tempering (including induction hardening) and plastic injection moulding processes.
Drop forging uses heavy rams to hammer the billet of metal into the shape of diagonal side cutting pliers, cutters, nippers. A chunk (billet) of metal is heated and roughly shaped using open-die drop forging machinery. Large rams are dropped onto the metal while a worker moves the piece around to create the rough shape of a handle and jaw.
Closed mould drop forging machine to shape and stamp diagonal side cutting pliers, cutters, nippers. The worker then places the billet on the anvil in the lower die (also known as a mould) of a closed-die drop forge. The die is shaped like a lever and jaw of diagonal cutting pliers. A ram with another die drops onto the billet forcing the metal into the shape of the tool.
Removing excess metal to make diagonal side cutting nippers, cutters, pliers. The shaped piece is placed in a press which cuts off the excess metal.
Grinding and sharpening blades of diagonal side cutting pliers, nippers, wire cutters. Once the piece has cooled, the blades are ground and sharpened.
Rivets are set using heat and pressure into the diagonal side cutting pliers, nippers, wire cutters. Two pieces are fitted together with a rivet, which is set in place using heat and pressure. The rivet is ground down so it is flush (level) with the surface of the pliers.
Heating and quenching tempers and hardens the steel of diagonal side cutting pliers, nippers, wire cutters. The diagonal cutting pliers are tempered to harden the metal. This involves heating them up to a high temperature and then ‘quenching’ them in oil to cool them down quickly.
Electromagnetic induction coil heats up parts of a tool to harden the blades of diagonal side cutting pliers, nippers, wire cutters. Induction hardening is used to harden the surface of the blades even further. This process uses an alternating electromagnetic field to heat small areas of a tool, in this case the blades, before quenching them.
Plastic coating is fitted over metal lever handles of diagonal side cutting pliers, nippers, cutters. The pliers’ surfaces are ground to produce a smooth finish and the plastic handles are added over the top of the metal levers. This is done by dipping the handles into liquid vinyl once or twice and allowing the plastic to set or by using the injection moulding technique.
Plastic injection moulding over handles of diagonal side cutting pliers, nippers, cutters. The injection moulding technique is where a metal diagonal cutting pliers piece is placed in a mould with a cavity around the handles. Plastic granules are heated to form a liquid and pressure from the drive unit forces the plastic into the cavity.
Two plastics make up most handles of diagonal side cutting pliers, nippers, cutters. The plastic cools and the tool is removed from the mould. If the handles are made of two plastics then this process is repeated in a new mould. This is called ‘overmoulding’ because one plastic is moulded over the top of the other. The second material is usually a softer plastic or a rubber which forms rubbery grips to increase user comfort.