April 2026 - 精诚工科气密性

Military-grade reliability and industrial-grade mass production at the same time! Uncovering the technological evolution of domestic airtightness testing solutions

This article takes the rescue incident of the U.S. military pilot's distress device as an entry point to reveal the core root cause of the failure of outdoor electronic equipment - sealing reliability rather than chip performance. The article systematically describes the technical principle of airtightness testing, the transformation of industry standards from sampling to full inspection, and the technical maturity path of domestic solutions (taking Jingcheng Industrial Technology as an example), emphasizing that airtightness testing is a key process to guard the reliability of equipment.

Airtightness tester selection guide: direct pressure, differential pressure, volumetric method of the essential differences and practical choice

This article introduces the working principle, applicable scenarios and selection decision logic of the three commonly used methods (direct pressure method, differential pressure method and volumetric method) of the airtightness tester. The direct pressure method is suitable for products with holes, low cost but limited stability; the differential pressure method eliminates interference through comparative measurements, with an accuracy of 0.1 Pa, which is suitable for high-precision micro-leakage detection; the volumetric method is specially designed for fully enclosed products with no openings to realize non-destructive sealing inspection. Selection should be based on a combination of product structure, accuracy requirements and production line schedule to avoid falling into common traps such as "low price is enough" or "ignoring the jig".