There are significant differences between spiral tungsten wire and straight tungsten wire in many aspects. The following is a specific comparative analysis:
- Shape and structure
Spiral tungsten wire: It appears as a continuous spiral or spiral coil. This shape increases the surface area of the tungsten wire, which helps to dissipate heat better.
Straight tungsten wire: It appears as a straight line without bending or spiral structure. Its surface area is relatively small, and the heat dissipation effect is not as good as that of spiral tungsten wire.
- Physical properties
Bearing capacity: The spiral structure allows the tungsten wire to better withstand tension and pressure, and its bearing capacity is stronger than that of straight tungsten wire.
Heat dissipation effect: The spiral shape helps to dissipate heat better, thereby protecting the tungsten wire from breaking or deformation in high temperature environments. Straight tungsten wires are relatively poor in heat dissipation.
- Application scenarios
Spiral tungsten wire: Due to its excellent bearing capacity and heat dissipation effect, spiral tungsten wire is widely used in the bulb manufacturing industry as the main material for incandescent bulbs. In addition, it is also widely used in the electronics industry, aerospace, national defense, medical and other fields.
Straight tungsten wire: Although the performance of straight tungsten wire is not as good as that of spiral tungsten wire in some aspects, it is still used in some specific application scenarios due to its simple shape and easy processing and installation. For example, in some electronic components and circuit boards, straight tungsten wires may be used as conductive materials or structural materials.
- Evaporation rate and loss
Spiral tungsten wire: At the same temperature, the evaporation rate of spiral filaments is smaller than that of straight tungsten wires. This is because the tungsten atoms evaporated from the inner surface of the spiral may fall onto the surface of the adjacent spiral filament, part of which is reflected and part of which is attached to the tungsten wire, thereby reducing the evaporation loss.
Straight tungsten wire: The evaporated tungsten atoms leave the tungsten wire permanently without hindrance and finally deposit on the surface of the bulb, resulting in a relatively fast evaporation rate.
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