How to identify the quality of resistance wire?
The service life of the resistance wire is related to the use time of the overall product, and it is also the most concerned issue of the merchants. However, most of the small manufacturers do not understand the heating products and think that the low price does not necessarily lead to the bad quality, which leads to the appearance of quality and brand in the final product In crisis, the quality of resistance wire can be identified through the following points.
1.Product temperature resistance performance: The common heating wires in the market are generally divided into silicone heating wires, PVC heating wires, and Teflon heating wires. In terms of temperature resistance, they are definitely the first choice for Teflon, but the expensive price makes buyers Unbearable, PVC material is notoriously not resistant to high temperatures. A higher temperature will cause the outer skin to melt. Therefore, PVC is definitely not an option. Silicone is a common high-temperature insulating material, the outer skin is soft and elastic, and the working temperature is The temperature is between minus 60 degrees and 200 degrees, the price is cheap, and it is impossible to use recycled materials for production. It is recommended to use this heating wire.
2. Bending performance: As the saying goes, what you pay for is what you pay for. Good products cannot be separated from good materials. The selection of heating wire is the key to life. Although the common heating wire heating conductor materials in the market are also nickel-chromium, Constantan, copper-nickel alloy, etc., but the final material is still different. Products in any industry are good or bad. According to the UL standard, only the heating wire with a bending test greater than 25000 times can meet the UL production technology standard.
3. Appearance problem: the appearance of the heating line without any problem should be smooth and bright.
