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Key control points of waterproof wiring harness technology

release time:2021-07-08publisher:Howdy

LED screen waterproof wire harness

1. Choose a connector with waterproof function

Even the machine is necessary to provide a safe and reliable connection. Choose advanced waterproof structure planning connector, the waterproof level is greater than or equal to IPX7 protection level. Select connectors produced by regular manufacturers to ensure strict quality control system, excellent processing and assembly accuracy, and multiple functional inspections. Capable of ensuring the waterproof function of the connector.

Waterproof connector

2. Wire harness planning process

The selection of wire diameter and the connector must match, and the wire diameter cannot be larger or smaller than the regular diameter of the connector;

3. In the production process

3.1. The waterproof terminal must be crimped with a special crimping mold, and the crimped terminal must meet the relevant technical requirements;

3.2. Heat shrinkage maintenance of solder joints and connection points: It is necessary to use heat shrinkable tubing for maintenance when the wire harness is welded. The copper wire must not pierce the heat-shrinkable tube, and it is necessary for the heat-shrinkable tube to completely wrap the copper wire. Heat shrinkable tubing must meet relevant technical requirements;

4. Air tightness test

The waterproof wiring harness sealing function test is tested by the intelligent sealing test system. Connect both ends of the wiring harness to the corresponding tooling, pass in compressed air, and conduct a pressure test to determine whether the sealing function is qualified. The test standards are as follows:

Detection pressure: 20KPa;

Inflation time: 10S;

Holding time: 5S;

Test time: 10S;

Pressure loss: ≤0.05 KPa;

In the regular time, the pressure loss is less than the regular value, indicating that the sealing function is good. Meet the requirements of waterproof wiring harness. The product function is qualified. Many factories conduct electrical function testing, sealing function testing, and appearance testing for every waterproof wiring harness. Ensure that the product quality is qualified.

Air tightness test

Only through strict planning of waterproof wiring harnesses, purchase of waterproof wiring harnesses produced by regular manufacturers, strict production according to the waterproof wiring harness technology, and careful and meticulous quality inspection, can we produce qualified ground-proof wiring harnesses.