Method for improving light distribution performance of vehicle halogen lamp filament

Abstract

The invention relates to a method for improving the light distribution performance of a halogen lamp filament for a vehicle, which comprises the following steps that: firstly, an absolute ethyl alcohol container is arranged at a position corresponding to the upper part of a welding station, and an absolute ethyl alcohol lower guide pipe is arranged at a position corresponding to a liquid outlet at the lower part of the absolute ethyl alcohol container; a needle valve for controlling the flow of the absolute ethyl alcohol is connected in series on a pipeline of the absolute ethyl alcohol lower guide pipe; the liquid outlet in the tail end of the absolute ethyl alcohol lower guide pipe is led to an upper electrode tip of a welding electrode or a molybdenum boat welding part, and the amount of the absolute ethyl alcohol led to the upper electrode tip or the molybdenum boat welding part by the liquid outlet is controlled by adjusting the needle valve; finally, when a molybdenum boat and a molybdenum rod are welded, the needle valve is opened, the opening degree of the needle valve reaches the adjusted degree, the absolute ethyl alcohol from the liquid outlet is dripped to the upper electrode and reaches the molybdenum boat or directly dripped to the molybdenum boat, the absolute ethyl alcohol on the molybdenum boat makes contact with a welding spot, waste heat generated by welding is absorbed, air is isolated, and oxidation is prevented. The light distribution performance of the halogen lamp filament is improved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing automobile light source components, and in particular relates to a method for improving the light distribution performance of a halogen lamp filament for automobiles. Background technique [0002] The aforementioned method of improving the light distribution performance of the automotive halogen lamp filament essentially refers to a method of preventing deformation of the molybdenum boat during welding. The aforementioned halogen lamps for vehicles can be found in published Chinese patent documents, such as CN100538995C (metal halide lamp), CN101103436A (halogen lamp), CN101142654A (halogen lamp), CN101578685A (halogen incandescent lamp), CN203192768U (high-performance long life-span halogen car lamp), CN102792418B (halogen lamp for car headlights), CN101447393B (a halogen lamp and its manufacturing method), CN102082066B (a class C halogen lamp), CN203192765U (a shock-resistant halogen car l...

AI Technical Summary

Problems solved by technology

Welding under the protection of nitrogen or a mixed gas of nitrogen and hydrogen as a shielding gas can prevent oxidation of the welding site and cause deformation of the molybdenum boat to a certain extent, but due to the limited heat capacity of nitrogen or a mixed gas of nitrogen and hydrogen, in The moment the welding is completed, the temperature of the welding point, that is, the aforementioned welding position, cannot be quickly reduced, so the deformation factor of the molybdenum boat during welding with the molybdenum rod cannot be effectively eradicated