Technique for manufacturing glass tube case of electrodeless lamp

Abstract

The invention discloses a technique for manufacturing a glass tube case of an electrodeless lamp. The technique comprises seven steps of washing a pipe, coating a film, coating powder, baking the power, wiping the power, butt jointing and annealing. According to the technique for manufacturing the glass tube case of the electrodeless lamp, disclosed by the invention, the evenness and the density of the inner wall of the glass tube are improved by adding a film coating technique so that the adhesion uniformity of the powder coating step is ensured; in addition, a multi-section temperature control design is utilized in the film coating, powder coating and powder baking steps so that the thickness of a coating is effectively ensured and the productivity is improved by 50%; in a powder baking step, a fan is additionally arranged and is aligned to an opening of a glass pipe so that an oxygen inlet is additionally arranged and the powder baking efficiency is improved; finally, after butt jointing, a high-temperature annealing treatment is carried out on a joint part to eliminate stress; in sum, the effects of the electrodeless lamp on aspects of lighting effect, light attenuation and service life are effectively improved.

Description

technical field [0001] The invention relates to a manufacturing process of a glass tube shell, in particular to a manufacturing process of a glass tube shell of an electrodeless lamp. Background technique [0002] Electrodeless lamp is a lighting product without filament and electrode, which is the abbreviation of electrodeless gas discharge fluorescent lamp. Plasma is formed. When the plasma excited atoms return to the ground state, they radiate ultraviolet rays, and the fluorescent powder on the inner wall of the bulb is excited by ultraviolet rays to produce visible light. [0003] At present, the manufacturing process of the glass shell of the electrodeless lamp is generally to clean the glass tube first, and then to powder coat, bake the powder, rub the powder, and butt joint. All also have very big deficiency aspect service life, be difficult to meet people's use requirement. Contents of the invention [0004] In order to solve the above problems, the purpose of t...

AI Technical Summary

Problems solved by technology

[0003] At present, the manufacturing process of the glass shell of the electrodeless lamp is generally to clean the glass tube first, and then to powder coat, bake the powder, rub the powder, and butt joint. There is still a big deficiency in terms of service life, and it is difficult to meet people's requirements for use.