1. Screw connection. Screw connection is a connection method using screw terminal blocks. Pay attention to the maximum and minimum cross-sections of the connecting wires and the maximum tightening torque allowed by screws of different specifications.   

　　2, soldering, soldering is the most common soldering. The most important thing for soldering connection is the continuity of metal between the solder and the surface to be soldered. Therefore, solderability is important for cold-pressed terminals. The most common coatings on the solder side of the wire ring terminal are tin alloy, silver and gold. The reed type contact has the welding piece type, the punching welding piece type and the notched welding piece type for the common welding end: the pinhole contact has the drilling arc notch type for the common welding end.   

　　3, crimping, crimping is a technique for compressing and displacing metal within specified limits and connecting wires to the contact pair. A good crimp connection can produce metal mutual fusion flow, so that the wire and the contact pair material symmetrically deform. This kind of connection is similar to the cold welding connection, which can obtain better mechanical strength and electrical continuity, and it can withstand more severe environmental conditions. It is generally believed that the correct crimping connection is better than soldering, especially in high-current situations. Special crimping pliers or automatic or semi-automatic crimping machine must be used for crimping. According to the wire section of the cold-pressed end, the correct wire barrel should be selected correctly. It should be noted that the crimp connection is a permanent connection and can only be used once.  

　　4. Winding, winding is to wind the wire directly on the winding post of the angular contact piece. When winding, the wire is wound under controlled tension, pressed in and fixed at the corners of the contact piece winding post to form an air-tight contact. There are several requirements for winding wires: the nominal value of the wire diameter should be within the range of 0.25mm~1.0mm; when the wire diameter is less than 0.5mm, the control engineering network copyright, the elongation of the conductor material is not less than 15%; the wire diameter is greater than When 0.5mm, the control engineering network copyright, the elongation of the conductor material is not less than 20%. Winding tools include winding guns and fixed winding machines.   

5. Pierced connection. Pierced connection is also called insulation displacement connection. It is a novel terminal technology invented by the United States in the 1960s. It has the characteristics of high reliability, low cost, and convenient use. It has been widely used in various printing Board terminal, cold-pressed end, in ring terminal. It is suitable for the connection of ribbon cables. When connecting, there is no need to strip the insulation layer of the cable. The tip of the "U"-shaped contact reed of the terminal is pierced into the insulation layer, so that the conductor of the cable slides into the groove of the contact reed and is clamped. All rights reserved, so that a tight electrical connection is formed between the cable conductor and the terminal reed. It only requires simple tools, but cables with specified wire gauge must be selected

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