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Terminal insulation performance degradation solution

Date:2017-05-05 【Return】 Reading:

First, the decline in insulation

The role of the insulator is to keep the contacts in the correct position and to insulate the contacts from the contacts and between the contacts and the housing. Therefore, the insulation must have excellent electrical properties, mechanical properties and processability. Especially with the high-density, miniaturization of the extensive use of terminals, the effective wall thickness of the insulator thinner and thinner. This insulation materials, precision injection molding and molding processes put forward more stringent requirements. Due to the presence of metal extraneous substances on the surface or inside the insulator, the surface dust, flux and other pollution damp, the organic material precipitates and harmful gas adsorption film and surface water film fusion to form ionic conductive channel, moisture absorption, mildew, insulation material aging and other reasons, Will result in short circuit, leakage, breakdown, low insulation resistance, poor insulation phenomenon.

Second, to prevent insulation drop method introduced

1, insulation material inspection

The advantages and disadvantages of the quality of raw materials on the insulating properties of insulators. Therefore, the choice of raw material manufacturers is particularly important, can not blindly reduce costs and lost the quality of the material. Should choose a good reputation of the factory materials. And for each batch of materials to be carefully checked check the batch number, material proof and other important information. Material usage traceability information.

2, insulator insulation resistance check

There are some manufacturing process specifications assembled into finished products and then test the electrical properties, the results of the insulation itself as insulation failure, only the entire batch of scrapped。 Reasonable process should be in the state of the insulator parts on 100% of the screening process to ensure that the electrical performance standards。

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