What materials are used to make up spring wires?

The general material for spring wires is PE plastic, also known as polyethylene plastic, which has corrosion resistance and electrical insulation (especially high-frequency insulation). Polyethylene is suitable for making corrosion-resistant and insulating parts; High pressure polyethylene is suitable for making films, etc; Ultra high molecular weight polyethylene is suitable for making shock-absorbing, wear-resistant, and transmission parts.

PE spring wire is generally rarely used, it mainly depends on what you are using it for. What are the requirements? Generally, spring wires are made of two materials, PU and PVC, and are commonly used for high-end equipment. PE spring wires are more expensive and slightly higher than PU, but in terms of elasticity, they are inferior to PU and only have the upper hand in certain fields.

We generally recommend customers to use PU for spring wires, as the majority of commonly used materials in the market are PU.

Physical and chemical properties of PE: The material has excellent corrosion resistance and electrical insulation (especially high-frequency insulation). It can be chlorinated, modified by irradiation, and reinforced with glass fiber Low pressure polyethylene has a high melting point, rigidity, hardness, and strength, low water absorption, good electrical properties, and radiation resistance; High pressure polyethylene has good flexibility, elongation, impact strength, and permeability; Ultra high molecular weight polyethylene has high impact strength, fatigue resistance, and wear resistance. Low voltage polyethylene is suitable for making corrosion-resistant and insulating parts; High pressure polyethylene is suitable for making films, etc; Ultra high molecular weight polyethylene is suitable for making shock-absorbing, wear-resistant, and transmission parts.

Molding performance:

1. Crystalline material has low moisture absorption and does not require sufficient drying. It has excellent fluidity and is sensitive to pressure. High pressure injection is recommended during molding, with uniform material temperature, fast filling speed, and sufficient pressure retention It is not advisable to use a direct gate to prevent uneven shrinkage and increased internal stress. Pay attention to selecting the gate position to prevent shrinkage and deformation.

2. The shrinkage range and shrinkage value are large, the directionality is obvious, and it is easy to deform and warp. The cooling speed should be slow. The mold is equipped with a cold material hole and a cooling system.

3. The heating time should not be too long, otherwise decomposition and burns may occur.

4. When soft plastic parts have shallow side grooves, they can be forcibly demolded.