Protective measures required for abs wiring harness

Protective Measures for Wire Harnesses Wire harness maintenance needs to consider several aspects: the selection of wire harness materials, the maintenance of wire connections in the harness, and the maintenance of the pin-type terminals in the harness. Haozhi will elaborate on how to better maintain wire harnesses from these aspects. Wire Harness Material Selection Wire harnesses are generally made of multi-core soft copper wires, and there are also silver-plated wires. In many cases, a thin layer of high-conductivity silver is plated on the surface of the copper wire to improve conductivity. The most important requirement is to select the appropriate wire diameter or cross-sectional area based on the maximum current of the wire. In addition to considering the wire diameter, the environment and function of the wire harness should also be considered. For example, the working environment of the engine is harsh, with high temperatures, and many corrosive gases and liquids. Therefore, when selecting wires, it is necessary to use wires that are heat-resistant, corrosion-resistant, friction-resistant, and vibration-resistant. There are many types of wires, and each country has different classifications, different points of emphasis, and different manufacturing standards. ABS wire harness processing plants need to select wires based on the specific working environment and requirements of the ABS wire harness during production. Polyvinyl chloride (PVC) insulated wires are commonly used. Maintenance of Wire Connections in the Harness The connection points between wires in a wire harness are called harness connection points. Connection points are commonly found in instrument harnesses, audio harnesses, engine compartment harnesses, and air conditioning harnesses. Signals are transmitted between switches and multiple electrical appliances through these connection points, so effective measures are necessary. Generally, after the connection points are connected, the copper wires of the wire cores are exposed, easily oxidized, and multiple connection points wrapped together in the harness can easily cause electrical connection between connection points, leading to short circuits. In severe cases, this can cause a fire. Therefore, wire harness connection points must be protected with materials that have good insulation properties. The materials used to wrap connection points vary depending on the working environment. PVC tape is generally used for harness connection points that are less affected by the environment, such as instrument harnesses, overhead harnesses, body harnesses, four-door harnesses, and indoor harnesses such as air conditioning harnesses. For connection points in the front compartment harness and engine harness, double-layer heat-shrink tubing is generally used to provide waterproof, high-temperature resistance, and wear resistance, but the cost is higher than that of tape.

Which automotive wiring harness process is the best?

What are the different processes involved in automotive wire harness manufacturing, and which one is the best? The second workstation after wire cutting is the crimping process. Crimping parameters are determined according to the terminal type specified in the drawings, and crimping operation instructions are created. Special requirements should be noted in the process documents and operators should be trained accordingly. For example, some wires need to be inserted through the sheath before crimping. This requires pre-installation of the wires, returning from the pre-installation workstation before crimping. Piercing crimping uses special crimping tools, and this crimping method has excellent electrical contact function. Next is the pre-installation process. First, pre-installation process operation instructions must be prepared. In order to improve the overall assembly efficiency, complex harnesses should have pre-installation workstations. The rationality of the pre-installation process directly affects the overall assembly efficiency and reflects the technical level of the process personnel. If the pre-installed parts are too few or the wiring path is unreasonable, it will increase the workload of the overall assembly personnel and slow down the assembly line speed. Therefore, process personnel must frequently stay on site and continuously summarize. The final step in automotive wire harness manufacturing is the overall assembly process. Assembly jigs and equipment can be designed based on the assembly fixture designed by the product development department, and the standard size of material boxes can be designed. The numbers of all installed sheaths and accessories are affixed to the material boxes to improve installation efficiency. The installation content and requirements of each workstation are prepared, and the entire assembly workstation is balanced to prevent the situation where the workload of one point is too large and the entire assembly line speed is slowed down. To achieve workstation balance, process personnel must be familiar with each operation and calculate the working hours on site, and adjust the installation process at any time. Harness production is mainly divided into two methods: terminal pressing (crimping) and forming. There is no single best method; it depends on the functional requirements of the harness.

Types, failure modes, and inspection methods of automotive wire harnesses

The automotive wiring harness is the main network of the automotive electrical system; without it, there would be no automotive electrical system. The most important component in the automotive wiring harness is the wire. Wires deliver and extract current to and from electrical components; most wires are made of copper. The cross-sectional area of the wires used in a vehicle determines the amount of current they can carry. Each circuit in a vehicle has its own circuit number, and each wire has its own color. Wires can be single-colored or striped.

List of well-known domestic auto wire harness companies (2021 edition)

Good news in autumn - Derun's Shuangfei Company successfully launched the NV11 & 12 projects

Won for the third consecutive time! Shuangfei selected among Guangxi's Top 200 Private Enterprises.

On September 6, 2022, the 2022 Guangxi Top 100 Private Enterprises Conference, hosted by the Guangxi Autonomous Region Federation of Industry and Commerce and the Liuzhou Municipal People's Government, was held in Liuzhou. Shuangfei Company, having cultivated the wire harness field for 30 years, has always adhered to innovation-driven development, strengthened technological research and development and accumulation, and strived to enhance the sustained leading edge of its core technologies. This has resulted in strong comprehensive strength and a good reputation, leading to its re-selection as one of the "Top 100 Private Enterprises in Guangxi" and "Top 100 Private Manufacturing Enterprises in Guangxi".