4.Knowledge of Halogen Lamps

4-6.About the seal of halogen lamps

Like incandescent lamps, halogen lamps need to have a sealed structure that prevents the enclosed gas from leaking to the outside. Also, in halogen lamps, the temperature of the valve must be 250 degrees or higher as a condition for ...

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4-5.Quartz glass bulb for halogen lamps

About quartz glass bulbs Due to the halogen cycle, halogen lamp bulbs must be heat-resistant glass with a temperature of 250℃ or higher when lit. In addition, the inert gas and halogen gas in the bulb are sealed at a ...

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4-4.Heat treatment of tungsten

About heat treatment of tungsten Tungsten has a melting point of 3422 ℃, which is the highest melting point of metals. From a machining perspective, the ductile-brittle transition temperature is high and low temperature brittleness is seen at room temperature. ...

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4-3.About filament coil

Tungsten, which has the highest melting point of metals, is used as the filament. In order to suppress heat loss due to the halogen gas to be enclosed, a filament that has been improved from a straight line and made ...

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4-2.Types and mechanisms of halogen lamp gas

Halogen lamp gas type Halogen lamps are incandescent lamps that contain an inert gas and a small amount of halogen gas inside the lamp. Inert gas Inactive gas includes helium (He 4.00g/mol), neon (Ne 20.18g/mol), (nitrogen (N2 28.02 / mol)), ...

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4-1.Development History Up to Halogen Lamps

Development of carbon filament Halogen lamps evolved from incandescent light bulbs. Carbon fiber was used for the filament of the early heat-generating light bulbs. Metal filaments such as osmium and tantalum were being developed, but they did not reach the ...

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