Ten technical indicators of wire processing production

1. Appearance requirements: the surface of the wiring harness after processing should be smooth, uniform skin, no air holes, cracks, indentations, bumps, breaks, spots, dirt, etc.; wiring harness and terminal crimping is firm, no loose. If welded to the terminal, it should be firmly welded, no loose core. 2. Technical requirements: the insulation should be tightly extruded on the conductor, and it should be easy to peel off without damaging the insulator, conductor or tinned layer. Insulation surface should be flat, uniform color; insulation thickness of the average value should not be less than the nominal value of the provisions of the thinnest point of the thickness should not be less than 90% of the nominal value-0.1mm. thickness measurement results should be GB1.1 Appendix C (Supplementary) trimmed to one decimal place; insulated wire cores should be able to withstand GB3048.9-83 AC 50Hz spark test as an intermediate check. 3. Insulated wire core color separation: insulated wire core should be easy to identify and not easy to erase the color of the color separation, should be consistent with the provisions of the wire and cable marking method. If necessary, other identification methods are allowed, but should be specified in the product standard. 1) single-core cable: no preference for color; 2) two-core cable: no preference for color; 3) three-core cable: green/yellow bicolor, light blue, brown; or light blue, black, brown; 4) four-core cable: green/yellow bicolor, light blue, black, brown; or light blue, black, brown, black or brown; 5 ) Five-core cable: green/yellow bicolor, light blue, black, brown, black or brown; or light blue, black, brown, black or brown, black or brown. 6) Green/yellow bicolor is the color of the grounding wire core, when there is a green/yellow bicolor grounding wire in the cable's insulating wires, the other insulating wires are not permitted to use green or yellow. 4. Sheath: the sheath shall be tightly extruded on the stranded insulating wires or the inner sheath, and shall be Easy to peel without damage to the insulator or inner sheath. Sheath surface should be flat, uniform color. Sheath thickness of the average value should not be less than the nominal value of the provisions of the thinnest point of the thickness should not be less than 85% of the nominal value (0.1mm). Thickness measurements should be GB1.1 Appendix C (Supplement) trimmed to one decimal place. 5. Mechanical strength: crimped part should be able to withstand the mechanical stresses that may occur during normal use. Whether qualified, may be over the following tensile strength test check. Apply table 2, table 3 specified tensile force 1min, when applying force, should not use explosive force. This tensile force may also be applied by a tensile testing machine, and the moving speed of the head of the testing machine shall be between 25㎜ (1.0in) / min and 50㎜ (2.0in) / min, and there shall be no shedding and no breakage. Wire should be subjected to combustion test, the flame on the surface of the test specimen should be self-extinguishing, and the distance between the burnt affected part and the lower edge of the fixture on the test device should be not less than 50mm. wire should be able to withstand the AC 50Hz unimmersed voltage test specified in the following Table 2, two or more cores and round sheathed wires should be subjected to the insulated core of the round sheathed wires of the AC 50Hz unimmersed voltage test specified in Table 4. 6. Insulation Resistance : The insulation resistance of wires shall be tested in accordance with Table 5 on the insulated cores after being subjected to the voltage test specified in Expression 4. 7. Electrical strength of conductors: Voltage shall be applied sequentially between all other conductors connected together for each pair of conductors, and then the voltage shall be applied between all the conductors and sheaths connected together: 1) Weak harness: 1500V AC voltage for 1min; 2) Strong harness: 2000V AC voltage for 1min; 3) Sheath: 3750V AC voltage for 1min; 4) Apply the voltage as above, there will be no strike through the plug or flashover phenomenon.8. Appearance quality of flat quick-connect terminals on the wiring harness: 1) The surface of the terminals should have a good appearance, there shall be no scratches, burrs, obvious deformation and poor plating, etc.; 2) There shall be no damage at the riveted joints, Flat quick-connect terminals are grouped according to the nominal width of the insert The terminals within the scope of this standard include the following groups: --2.8mm (0.110in) series; --4.8mm (0.187in) series; --6.3mm (0.250in) series.10. The preferred cross-sectional area of the wire shall be 0.5㎟, 0.75㎟, 1.0㎟, 1.5㎟, 2.5 ㎟, 4.0㎟, and 6.0㎟, or the corresponding AWG gauge.-11, on the BBC Electronic Products Network platform related to the introduction and sales of products brief: BBC Electronic Products Network - a professional agent / production / sales of a variety of {connectors | wiring harness | wire and cable products }; if you have a related [connectors | wiring harness | wire and cable products] purchasing / sourcing needs or would like to buy / to understand what connectors | harness | wire and cable product solutions that we can provide, please contact our Division below! Business personnel; If you have related [connectors | harness | wire and cable products] sales / resources and promotion needs, please click on the "→ Business Cooperation ←" and special people to discuss!