Manufacturing method for integrated liner of alumina ceramic metal halogen lamp

Abstract

The present invention relates to an inorganic non-metallic material and a ceramic tube for light source lighting, specifically to a method for preparation of alumina ceramic metallic halogen lamp integral liner, which includes the following three steps: 1) adopting an injection method to inject the thermoplastic material in an injecting molding die to form a blank; 2) adding the blank in an air pressure molding external mold for heating to soften, aerating the blank through a core tube center hole to dilate the blank, to form a blank half-finished product whose external shape satisfies the requirements; 3) performing unglazed pottery to the half-finished product, passing through an appearance surface sanding reconditioning process, and then performing high temperature sintering to obtain the alumina ceramic metallic halogen lamp integral liner. The method has beneficial effects of no need of adopting volatile inner core, regular liner shape, controlled size precision, simple process, low production costs, high reliability and application in various shapes production and the bulk production; the special-shaped integral alumina ceramic metallic halogen lamp liner manufactured by the method has high strength, long service life, good heat resistance and corrosion resistance performances.

Description

technical field [0001] The invention relates to an inorganic non-metallic material and a ceramic tube for light source lighting, in particular to a ceramic tube with simple molding process, high efficiency, adaptable to any shape, high dimensional accuracy, high mechanical strength, and good air tightness. The invention discloses a method for manufacturing an integrated inner container of an aluminum ceramic metal halide lamp. Background technique [0002] Ceramic metal halide lamps are currently the most complete and excellent varieties of various electric light sources. They have the characteristics of high intensity, small size, high luminous efficiency, good color rendering, long life, and consistent light. [0003] At present, there are mainly two types of manufacturing methods for ceramic metal halide lamp inner tanks. The first type is a split manufacturing method, which is formed by bonding the first five parts to three parts, and even co-firing two parts. The split...

AI Technical Summary

Problems solved by technology

The one-piece molding method overcomes the shortcomings of the split inner tank and improves the electro-optic performance and life of the lamp. However, the method with an inner core often results in inconsistent expansion coefficients of the inner core and the outer shell at high temperatures during the core discharge process. Cracking of the shell, low yield, and the removal of the inner core material is difficult to clean, the residue has a great influence on the transparency of the gallbladder shell, and the complicated manufacturing and processing of the inner core material also increases the cost

The inner tank is manufactured by the plaster mold adsorption method, the adsorption time is quite long, the efficiency is low, the product size, especially the thickness control is difficult, and the density of the inner tank wall is not uniform, resulting in poor light transmittance, strength and dimensional accuracy of the product

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