Components and process of lead-free ultra-low sodium glass tube

Abstract

The invention relates to a chemical batching component and a process of a lead-free ultra-low-sodium glass tube, in particular to a chemical batching component and a process of a lead-free ultra-low-sodium energy-saving lamp tube, and belongs to the technical field of energy-saving lamp manufacturing. It consists of SiO2, AL2O3, B2O3, K2O, Na2O, S2O, BaO, CaO, MgO, Li2O. It is characterized in that their components are as follows: SiO2 accounts for 67-68%, AL2O3 accounts for 1.5-2.0%, B2O3 accounts for 1-1.5%, K2O accounts for 10-11%, Na2O accounts for 3.5-4.0%, S2O accounts for 1.2- 2%, BaO 8-9%, CaO 2-3%, MgO 0-0.5%, Li2O 1.5-2.0%. It is characterized in that their technological process is: weighing of raw materials→stirring→feeding→melting, clarifying and homogenizing in an electric melting furnace→drawing tube forming→finely cutting round mouth of glass tube→inspecting and packing→storage. The invention has the advantages of good chemical stability, large luminous flux, high resistivity, low ultraviolet intensity, long service life, anti-aging and the like.

Description

technical field [0001] The invention relates to a component and a process of a lead-free ultra-low-sodium glass tube, in particular to a component and a process of a lead-free ultra-low-sodium energy-saving lamp tube, which belongs to the technical field of energy-saving lamp manufacturing. Background technique [0002] Na in lead-free low-sodium glass tubes used in energy-saving lamps on the market 2 The O composition is 8-9%. This kind of low-sodium lamp tube is still very easy to produce sodium amalgam, which leads to defects such as low chemical stability of the lamp tube, strong ultraviolet light emission, small luminous flux, and short service life. Therefore, domestic and foreign markets hope that energy-saving lamps will be more energy-efficient, more environmentally friendly, brighter and have a longer lifespan. However, in order to meet people's above-mentioned expectations, it is necessary to develop a chemical composition and a manufacturing process of an energy...

AI Technical Summary

Problems solved by technology

[0002] Na in lead-free low-sodium glass tubes used in energy-saving lamps on the market 2 The O composition is 8-9%. This kind of low-sodium lamp tube is still very easy to produce sodium amalgam, which leads to defects such as low chemical stability of the lamp tube, strong ultraviolet light, small luminous flux, and short service life.