Views:2 Author:Randy Publish Time: 2019-01-22 Origin:BSUMWELL
1. Material selection: The main application areas of the current waterproof junction box products are on-site and open-air sites with relatively harsh environments. When considering the safety performance of the product, consideration should be given to the impact resistance, static load strength, non-toxicity, anti-aging properties, flame retardancy and corrosion resistance of the material (non-toxic properties have been widely concerned, reasons: encountered In the event of fire, toxic and harmful gases are not released during combustion, and in general, the majority of deaths are caused by inhalation of large amounts of toxic gases.
2. Structural design: The overall strength, aesthetics, easy processing, easy installation and recyclability of the waterproof junction box should be considered. At present, the waterproof terminal box products produced by international mainstream manufacturers do not contain any metal fittings, which simplifies the recycling process of the products. However, most of the domestic manufacturers choose different materials, and the material has poor resistance to enthalpy. Generally, brass inserts are installed in the mounting sockets of the waterproof junction box to increase the installation strength, so that the material recovery process Will increase time and cost. The raw materials of high performance indicators provided by regular manufacturers can solve such problems.
3. Wall thickness: Generally, when designing the product, the overall cost of the product should be considered as far as possible to meet the impact resistance and anti-deformation performance of the product, and the wall thickness of the product should be minimized. The international waterproof junction box is designed, ABS and The wall thickness of PC material products is generally between 2.5 and 3.5, the glass fiber reinforced polyester is generally between 5 and 5.6, and the wall thickness of die-cast aluminum material products is generally between 2.5 and 6. The material wall thickness should be designed to meet the installation requirements of most components and accessories.
4. Selection of sealing rubber ring material: For waterproof junction box products, commonly used sealing rubber ring materials are: PUR, EPDM.Neoprene, Silicon. When selecting sealing rubber ring, temperature range, tensile strength, expansion ratio, hardness and density should be considered. , compression ratio, chemical resistance