Wire crimping tool--precise tool

      Wire crimping tool is a way to connect with a cold copper, aluminum wire hardware tools, particularly in the aluminum wire and ACSR laying often use to it. Crimping pliers can be divided into two types of hand pressure and oil pressure. Wire cross section 35m㎡ Less hand pressure clamp, 35m㎡ above gear or hydraulic pressure pliers clamp. 

      With the development of the mechanical engineering industry, machine tool electrician can be used more and more, the use of these tools not only can greatly reduce labor intensity, but also exponentially improve work efficiency, it is necessary to understand electrician, master these tools, should be good use of these advanced tools. Production of aluminum and more cheap, therefore, aluminum has been increasingly used in place of copper wire. Production of aluminum and tin, there are two non-tinned. Tinned copper aluminum may generally be the same as the connection method. Not galvanized aluminum is easily oxidized, if the connection is wrong, the connection will heat, and even affect the safety circuit.

1. aluminum multi (single) shares wire line connecting method
(1) Select film and oval aluminum sleeve according to wire section; 
(2) the wire insulation junction jacket stripping, stripping length should be an aluminum sleeve length is generally plus 5 ~ 10mm (no bare aluminum this this) with a wire brush to the wire surface oxide layer (film); 

(3) with another clean wire brush dipped in Vaseline zinc cream evenly around the core, and prevent oxidation layer rebirth. 
(4) with a round shaped wire brush to remove the casing wall aluminum oxide layer and grease, preferably also zinc cream Vaseline tube wall. 
(5) relative to the two cores inserted aluminum casing, so that the two thread exactly in the middle of the aluminum casing connection. 
(6) according to the thickness of the aluminum casing select appropriate wire die mounted on the crimping pliers, After tightening the screws, the casing cover with aluminum core wire embedded line mode. 

(7) with the aluminum casing, pinch force clamp handle crimping: first press two ends of the pit, and then press the middle of the two pits, indentation should have been on. After receiving the completed joint press to check the aluminum casing curvature of the pipe length should not exceed 2%, otherwise use a wooden hammer straightening; aluminum casing should be crack; aluminum casing outside the wire may not have "lantern" shaped bulge or "cramps" -shaped missing and so on. 
(8) wipe residual grease, brushing a layer of paint drying asphalt ends and the aluminum casing commissure. Then aluminum casing and exposed wire portion first two packages with yellow wax, then wrapped in two layers of black tape, has been to hold the insulating layer 20mm place


2. Connection method, aluminum multi (single) device with wires or screw crimp wiring pile head
(1) according to the thickness of the core wire of a suitable selection of aluminum wiring ears. 
(2) wire brush the surface of the oxide, zinc cream evenly coated with Vaseline. 
(3) The wiring ear jack wall oxide layer is also brush, preferably also the inner walls coated with zinc cream Vaseline. 
(4) the wire insertion hole wiring harness ear, into the hole to the bottom. 
(5) Select the appropriate line mode, positive pressure in the ear wiring two pits, the first pit outside pressure, then pressure in the pit, two pits to be in a straight line. 
(6) in the terminal portion and the ears stripped wire insulation wrapped packets between insulating tape (insulating tape wrapped insulation from the wire). 
(7) on the back of the ear wire brush to the oxide layer, and evenly coated with Vaseline zinc cream. 
(8) so that the back of the ear downwards wiring, wiring trailer coupling sleeve on the screw, then turn put flat washers and spring washers, tightly secured with a nut.