Why the airtightness test should be carried out after the bursting pressure test is qualified, the first airtightness test and then bursting

In industrial production, many products are required to undergo burst pressure testing to check their ability to withstand extreme pressure conditions, thus ensuring the safety and reliability of the product.

For example, pressure vessels, new energy battery covers, and rupture discs all require burst pressure testing.

Imagine if a pressure vessel suddenly bursts during operation, it will cause serious safety accidents. This fully illustrates the importance of the burst pressure test.

I. Gas Tightness Testing: The "Safety Valve" for Blast Testing

Why do I have to pass an airtightness test first?

Imagine a scenario where you are about to perform an extreme pressure test on a pressure vessel and don't know if it has tiny cracks. As the pressure gradually increases, these cracks could cause:

• Catastrophic chain reaction : Small leaks in a high-pressure environment can quickly expand, turning an otherwise controlled test into an unpredictable explosion. Testers' lives are at risk and equipment damage is incalculable.
• Misleading results from data distortion If there is a leak in the container, the pressure will start to release before it reaches its true limit, and the "burst pressure" from the test does not reflect the true capacity of the product at all.
• The vicious circle of resource wastage : The burst test itself is destructive test, the product can not be reused after the test. If the burst test on the defective products, not only a waste of testing resources, but also can not get effective data.

Battery cover video case: helium leakage test → breathing cycle → pressure resistance → burst test

Engineering Wisdom: The Scientific Logic of Test Sequencing

testing phase	goal	risk level	(manufacturing, production etc) costs
Air tightness test	Finding small defects	lower (one's head)	lower (one's head)
burst pressure test	Verification of limit tolerance	your (honorific)	your (honorific)

This sequence of tests reflects a fundamental principle of engineering: a low-risk approach to screening out high-risk subjects.

II. Airtightness testing: the precision art of defect discovery

Triple Value Technology Guarantee

• The magnifying glass effect of defect recognition: Airtightness testing can detect defects such as microscopic holes and cracks that are undetectable to the naked eye. These seemingly insignificant defects can become fatal weak points in a high-pressure environment. Through sophisticated pressure sensors, the test equipment is able to capture extremely small pressure changes, which is equivalent to a "CT scan" of the product, so that any internal defects are invisible.
• Quantitative criteria for quality assessment: Traditional visual inspection is highly subjective, while airtightness testing provides objective data support. Parameters such as leakage rate and pressure decay value provide a scientific basis for quality determination.
• Guidelines for optimization of production processes: By analyzing the airtightness test data of different batches of products, it is possible to identify critical control points in the production process and guide process improvement. For example, if a significant increase in the leakage rate of a product after a certain process is detected, production parameters can be adjusted in a timely manner.

III. Technology realization: perfect transformation from theory to practice

Technological evolution of testing equipment

modernityAir tightness testing equipmentIt has reached an amazing level of precision. Taking the equipment for airtightness of Jingcheng Gongke as an example, the testing accuracy can reach:

• Pressure decay detection: Recognizes small pressure changes of 0.1Pa
• Flow Detection: Measures leaks as small as 0.01ml/min.
• temperature compensation: automatically eliminates the effect of temperature variations on test results

What does this precision mean? It is equivalent to being able to detect a microporous hole one ten-thousandth of the diameter of a hair strand.

The efficiency revolution of automation integration

Traditional manual testing is not only inefficient, but also prone to human error. Modern automated airtightness inspection system is realized:

• Dramatic increase in detection speedThe inspection time for a single product is reduced from several minutes to tens of seconds in the traditional method, which is fully adapted to the requirements of the modern production line's tempo.
• Systematization of data management: All testing data are automatically recorded and stored to form a complete quality traceability chain. Once the product has problems in use, it can be quickly traced back to the specific production batch and testing data.
• Total elimination of human error: Automated testing eliminates the subjectivity of manual judgment and ensures that each product is judged according to uniform standards.

IV. Business value: huge returns on security investments

In-depth analysis of cost-effectiveness

While there is an additional cost associated with adding an airtightness testing session, the return on this investment is significant:

• Avoiding catastrophic losses: The cost of a safety incident is often a thousand or ten thousand times the cost of inspection. With up-front precision testing, risks can be kept within acceptable limits.
• Enhance product credibility: Double-tested products are more competitive in the market and customers are more willing to pay for safety.
• Optimize productivity: Through the analysis of testing data, we can continuously improve the production process, increase the product qualification rate, and reduce the overall production cost.

V. Jingcheng Engineering: Technical Guarantee for Professional Testing

In the field of burst pressure testing and airtightness inspection, Precision Engineering Airtightness provides customers with a full range of solutions based on more than ten years of technical accumulation:

• Continuous innovation in equipment technology: fromAirtightness Testerup toWaterproof Testernotice fromBurst Testerup toRespiratory cycle test equipmentThe product line covers all aspects of industrial inspection.
• Professional services for customized solutions: Provide tailor-made testing solutions for the specific needs of different industries to ensure that each customer receives the most suitable technical support.
• The local advantage of international qualityWe provide products comparable to imported products at domestic prices, helping our customers to control costs while maintaining quality.
• Local Brands for Global ServicesThe company has more than 3,600 customers in Asia-Pacific, Europe and North America, and its products are CE certified, so it has the ability to serve the international market.

There are no flukes in industrial safety, and every inspection is a guardian of life. Choosing professional testing equipment and programs is choosing to be responsible for safety.

Precision Engineering airtightness, so that every test becomes a guarantee of safety, so that every product can stand up to the limit.

To learn more about our specialized solutions for burst pressure testing and gas tightness testing, please contact our technical team.

Original Statement: This article by the Precision Industrial Technology technical team original, based on practical application experience and customer feedback collated, reproduced please specify the source.