Several common problems in wire harness processing and their solutions

Common and common problems in wire harness processing, and their solutions are as follows:

1. When threading the rubber shell, the terminal takes off the pin.

It is important to pull back each time you insert a hole.

2. The wire is stained with tin.

Once the wire is stained with tin, it may cause PVC to retract under heat. In this case, select temperature resistant PVC and control the tin dipping time should not be too long.

3. Insufficient tension after crimping;

If the harness tension cannot be reached, you can choose to find out the causes from the following aspects:

① Whether the crimping range of terminal and line conductor is suitable.

② Design of blade material and its structure.

③ Terminal materials, etc.

4. The label is not sticky.

If the label is not sticky, do not directly touch the self-adhesive surface with your hands. First stick it on clean metal, and then stick it on the line one by one.

5. How to do the reliability test of cable line?

It is generally necessary to test swing, lifting weight and conduction performance.

General swing test conditions: swing frequency, lifting load, minimum number of swing requirements, etc.

The conditions of lifting test shall include three parameters: lifting load, lifting time and displacement size after lifting.

6. How to test the coating of terminals?

Terminal salt spray test can be carried out.

7. How to test the tension of double pressure terminal?

The double voltage terminal shall test the tensile force of a single wire in the same way as that of a single wire.