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Breakthrough in the difficulty of wire sealing test

With the development of economy, whether consumers or producers, the requirements for product quality are constantly improving, and people's requirements for wire sealing are also constantly improving. In order to obtain the highest efficiency of wire products, manufacturers will test the tightness of wire. However, different types of wire have different requirements for the tightness test, which is also one of the difficulties in the tightness test of wire. As a well-known seal testing and production expert, Harris technology has always made great achievements in the seal testing of online materials. So, this time we will share a case of wire seal testing for your reference.

1、 Overall situation of wire rod

1. The wire has strong plasticity, high softness, easy to be folded and difficult to be directly detected;

2. The whole wire rod is irregular long strip, and the connector before and after the wire rod is irregular cylinder;

3. The connectors at the front and back ends of the wire are exposed to ensure the use, which is easy to cause gas leakage in the detection;

4. In order to achieve its sealing performance, some manufacturers use sealing ring and whole glue pouring at the joint to isolate the invasion of external substances, so the leakage value is small and it is difficult to monitor the data;


Die of wire connector sealing tester

2、 In the face of the overall situation of wire, how to test the sealing performance of wire

According to the overall condition of wire rod, Harris technology will customize a mold tooling. The mold can be filled according to the softness of wire rod. In order to better fix the connectors at both ends of wire rod, a groove is specially made to make the mold better sealed when closed.


Hermetic tester for wire rod


Put the wire connector into the tooling die to connect with our instrument. There is a valve island, air tank and other parts inside the instrument and the program we set. After connecting, press the start button when testing the wire.

When testing, the instrument will inflate the mold. If the wire connector is not sealed and air leakage occurs, the leakage value in the instrument will be larger and larger, and the pressure value will drop. At this time, it can determine whether the wire connector leaks, and the instrument test results will also show ng, which means that the air tightness test does not pass. If the tested wire connector does not leak, the gas in the tooling die will be in a constant state after inflation, the pressure value and leakage value displayed on the instrument are also stable, and the test result of the instrument will display "OK", indicating that the air tightness test has passed.

3、 Parameter table of wire sealing tester


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