Processing method of glass bead

Abstract

The invention relates to a method for producing a glass bead for sealing a gas discharge lamp, in particular to a processing method of the glass bead. The method includes: combining two quartz tubes of different thicknesses in a sleeved manner, melting the two quartz tubes together to form a new quartz tube, and processing the new quartz tube into the glass bead. The processing method has the advantages that the glass bead is directly processed by the quartz tube, the inner hole of the glass bead quartz tube is smooth, the problem of machining marks caused by mechanical drilling on a quartz rod is avoided, and precision is increased.

Description

technical field

[0001] The invention relates to a method for producing glass beads used for sealing gas discharge lamps, especially a method for processing glass beads. Background technique

[0002] The glass beads used in gas discharge lamps are usually processed by mechanical drilling with specific specifications of quartz rods, but the precision of the mechanical drilling method is not good, resulting in corrugated processing marks in the inner holes of the glass beads, which may shrink after shrinkage. Gaps are left, resulting in poor quality lamps. In addition, the machining aperture tolerance is too large. In order to ensure that the electrode rod is packaged in place, it is usually necessary to leave a large gap and wind more molybdenum foils, resulting in increased man-hours in the production process and a great waste of materials. The inner wall of the glass beads produced by the method is smooth, and the inner diameter tolerance is small, which can well avoid the ...

Examples

Embodiment 1

[0018] Process glass beads with an inner diameter of 6mm, an outer diameter of 17mm, and a total length of 14mm. The specific steps are as follows:

[0019] Step 1, pretreatment, select two kinds of quartz tubes with inner and outer diameters of φ6mm×11mm and φ12mm×18mm for pretreatment. The treatment process is to rinse the floating dust on the surface of the quartz tube with clean water, and then place it in hydrofluoric acid Soak in the acid solution, after soaking for 2 minutes, take it out, and then rinse it with pure water 4 times to get a clean quartz tube.

[0020] Step 2, polishing. The specific process of polishing is to burn the clean two kinds of quartz tubes to red heat with hydrogen-oxygen flame, and keep it for 15 seconds, then remove the flame and cool down naturally.

[0021] Step 3, sealing. The specific process of sealing is as follows: put the polished and cooled quartz tube with an inner and outer diameter of φ6mm×11mm into the polished and cooled quartz t...

Embodiment 2

[0025] To process glass beads with an inner diameter of 4mm, an outer diameter of 12mm, and a total length of 10mm, the specific steps are as follows:

[0026] Step 1, pretreatment, select two types of quartz tubes with inner and outer diameters of φ4mm×6mm and φ7mm×12mm for pretreatment. The treatment process is to rinse the floating dust on the surface of the quartz tube with clean water, and then place it in hydrofluoric acid Soak in the acid solution for 1 minute, take it out, and rinse it with pure water for 3 times to get a clean quartz tube.

[0027] Step 2, polishing. The specific process of polishing is to burn the clean two kinds of quartz tubes to red heat with hydrogen-oxygen flame, and keep it for 10 seconds, then remove the flame and cool down naturally.

[0028] Step 3, sealing. The specific process of sealing is as follows: put the polished and cooled quartz tube with an inner and outer diameter of φ4mm×6mm into the polished and cooled quartz tube with an inner...

Embodiment 3

[0032] Process glass beads with an inner diameter of 5mm, an outer diameter of 14mm, and a total length of 14mm. The specific steps are as follows:

[0033] Step 1, pretreatment, select two types of quartz tubes with inner and outer diameters of φ5mm×7mm and φ8mm×15mm for pretreatment. The treatment process is to rinse the floating dust on the surface of the quartz tube with clean water, and then place it in hydrofluoric acid Soak in the acid solution for 1 minute, take it out, and rinse it with pure water for 3 times to get a clean quartz tube.

[0034] Step 2, polishing. The specific process of polishing is to burn the clean two kinds of quartz tubes to red heat with hydrogen-oxygen flame, and keep it for 10 seconds, then remove the flame and cool down naturally.

[0035] Step 3, sealing. The specific process of sealing is to insert the polished and cooled quartz tube with an inner and outer diameter of φ5mm×7mm into the polished and cooled quartz tube with an inner and oute...

technical field

[0001] The invention relates to a method for producing glass beads used for sealing gas discharge lamps, especially a method for processing glass beads. Background technique

[0002] The glass beads used in gas discharge lamps are usually processed by mechanical drilling with specific specifications of quartz rods, but the precision of the mechanical drilling method is not good, resulting in corrugated processing marks in the inner holes of the glass beads, which may shrink after shrinkage. Gaps are left, resulting in poor quality lamps. In addition, the machining aperture tolerance is too large. In order to ensure that the electrode rod is packaged in place, it is usually necessary to leave a large gap and wind more molybdenum foils, resulting in increased man-hours in the production process and a great waste of materials. The inner wall of the glass beads produced by the method is smooth, and the inner diameter tolerance is small, which can well avoid the ...

Examples

Embodiment 1

[0018] Process glass beads with an inner diameter of 6mm, an outer diameter of 17mm, and a total length of 14mm. The specific steps are as follows:

[0019] Step 1, pretreatment, select two kinds of quartz tubes with inner and outer diameters of φ6mm×11mm and φ12mm×18mm for pretreatment. The treatment process is to rinse the floating dust on the surface of the quartz tube with clean water, and then place it in hydrofluoric acid Soak in the acid solution, after soaking for 2 minutes, take it out, and then rinse it with pure water 4 times to get a clean quartz tube.

[0020] Step 2, polishing. The specific process of polishing is to burn the clean two kinds of quartz tubes to red heat with hydrogen-oxygen flame, and keep it for 15 seconds, then remove the flame and cool down naturally.

[0021] Step 3, sealing. The specific process of sealing is as follows: put the polished and cooled quartz tube with an inner and outer diameter of φ6mm×11mm into the polished and cooled quartz t...

Embodiment 2

[0025] To process glass beads with an inner diameter of 4mm, an outer diameter of 12mm, and a total length of 10mm, the specific steps are as follows:

[0026] Step 1, pretreatment, select two types of quartz tubes with inner and outer diameters of φ4mm×6mm and φ7mm×12mm for pretreatment. The treatment process is to rinse the floating dust on the surface of the quartz tube with clean water, and then place it in hydrofluoric acid Soak in the acid solution for 1 minute, take it out, and rinse it with pure water for 3 times to get a clean quartz tube.

[0027] Step 2, polishing. The specific process of polishing is to burn the clean two kinds of quartz tubes to red heat with hydrogen-oxygen flame, and keep it for 10 seconds, then remove the flame and cool down naturally.

[0028] Step 3, sealing. The specific process of sealing is as follows: put the polished and cooled quartz tube with an inner and outer diameter of φ4mm×6mm into the polished and cooled quartz tube with an inner...

Embodiment 3

[0032] Process glass beads with an inner diameter of 5mm, an outer diameter of 14mm, and a total length of 14mm. The specific steps are as follows:

[0033] Step 1, pretreatment, select two types of quartz tubes with inner and outer diameters of φ5mm×7mm and φ8mm×15mm for pretreatment. The treatment process is to rinse the floating dust on the surface of the quartz tube with clean water, and then place it in hydrofluoric acid Soak in the acid solution for 1 minute, take it out, and rinse it with pure water for 3 times to get a clean quartz tube.

[0034] Step 2, polishing. The specific process of polishing is to burn the clean two kinds of quartz tubes to red heat with hydrogen-oxygen flame, and keep it for 10 seconds, then remove the flame and cool down naturally.

[0035] Step 3, sealing. The specific process of sealing is to insert the polished and cooled quartz tube with an inner and outer diameter of φ5mm×7mm into the polished and cooled quartz tube with an inner and oute...