Recently, the high-strength ceramic vacuum tubes developed by Shanghai Kering Technology Development Co., Ltd. (hereinafter "Shanghai Kering") for the Spallation Neutron Source (SNS) project of the Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, passed final acceptance. Their core performance metrics redefine industry benchmarks with revolutionary breakthroughs.

Technical Specifications & Performance Highlights
The vacuum tubes (φ250mm × 1200mm) exceed all industry limits:

l Flexural Strength >300 MPa (surpassing GB/T 5593-2015 standard limits)

l Sealing Strength >90 MPa (exceeding tensile strength requirements per standards)

l Ultra-High Vacuum (UHV) Compliance: Leak rate and vacuum maintenance fully meet specifications

Breakthrough Innovations
As a national high-tech enterprise with over 30 years of expertise in electromechanical and vacuum technologies, Shanghai Kering demonstrated exceptional technical prowess:

l Novel Brazing Process: Graded titanium stress ring design effectively mitigates stress concentration caused by thermal expansion mismatch between ceramic and metal.

l Vertical Dynamic Infiltration Technology: Achieves uniform solder distribution on 3D curved surfaces using a proprietary optimized vertical vacuum brazing furnace.

l UHV Compatibility: Crack-free welded interfaces ensure ultra-high vacuum integrity.

Strategic Applications
These tubes will be deployed in:

l Beam channels of spallation neutron source target stations

l Synchrotron radiation light sources

l Advanced nuclear physics research and materials science analysis

This advancement significantly enhances the reliability of major scientific infrastructure. A company representative stated:

"This technological breakthrough marks China’s achievement in import substitution for high-precision vacuum components. Shanghai Kering remains committed to empowering mega-science projects with autonomous core technologies, driving innovation to provide cutting-edge solutions for scientific research and accelerating the upgrade of China’s scientific equipment."