研究目的
Investigating the possibility of implementing the electron-beam welding of quartz glass using a plasma electron source operating in the middle vacuum range of pressure (forevacuum).
研究成果
The study demonstrated the principle possibility of electron-beam welding of quartz glass using a forevacuum plasma electron source, achieving weld seam strengths comparable to the original material. Optimal welding temperatures were identified to minimize mass entrainment and ensure high seam strength.
研究不足
The study was limited by the shallow penetration depth of the electron beam into quartz glass and the material's low thermal conductivity, which affected the efficiency of the welding process and the quality of the weld seam.
1：Experimental Design and Method Selection:
The study utilized a forevacuum plasma electron source for electron-beam welding of quartz glass, focusing on the effects of gas atmosphere composition and heating temperature on weld seam quality.
2：Sample Selection and Data Sources:
Quartz glass rods and tubes were used as samples. The composition of the gas atmosphere was analyzed using a residual gas analyzer.
3：List of Experimental Equipment and Materials:
Equipment included a forevacuum plasma electron source, vacuum chamber, mechanical forevacuum pump, high-temperature pyrometer, and residual gas analyzer. Materials included quartz glass rods and tubes.
4：Experimental Procedures and Operational Workflow:
The process involved pumping the vacuum chamber to a specific pressure, introducing helium, and performing electron-beam welding at controlled temperatures.
5：Data Analysis Methods:
The mechanical strength of weld seams was tested using a universal testing machine, and gas atmosphere composition was analyzed with a residual gas analyzer.
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