How to perform sealing test?Teach you step by step to master key techniques

As we all know, seal testing is a crucial step for a wide variety of products, especially packaging containers, piping systems, automotive parts, etc.Can you imagine the pain of having your air conditioner leak through a tiny crack in the sweltering heat?To make matters worse, some sensitive electronic equipment may become expensive scrap metal in an instant if it is not sealed properly.Today, Hai Ruisi will take you to learn how to perform sealing testing, so that your life and work will be less "leaky" and more "reliable"!

1. The importance of sealing testing

Whether you are engaged in medical, aerospace, automotive manufacturing, or food and beverage, seal testing is almost everywhere.Why?This is because sealing directly affects the safety, performance and life of the product.If the product sealing is not good, it may not only lead to a waste of resources and production losses, but more seriously endanger life safety.Therefore, careful sealing testing is crucial to ensuring product quality and performance.

2. Common sealing testing methods

Common sealing testing methods mainly include bubble method, pressure decay method, helium detection method, etc.The bubble method determines the leak point by observing whether there are bubbles overflowing; the pressure decay method detects leaks by observing the changes in pressure; and the helium detection method determines the location and extent of the leak by detecting the amount of leaked helium.Each method has its own characteristics and applicable scenarios, and choosing the right method is extremely critical.

3. The secret of the bubble method

The bubble method, as the name suggests, detects leaks through bubbles.Typically, the object to be tested is immersed in water, pressure is applied, and then observed to see if bubbles emerge.This method is suitable for detecting larger leaks, but is less suitable for smaller leaks.Moreover, it is easily affected by air buoyancy and liquid surface tension, and requires a high technical level to operate.

4. Pressure decay method: clear at a glance

The pressure decay method is one of the most commonly used sealing testing methods.The principle is very simple: pressurize the system and observe how the pressure changes over time.If the pressure drops quickly, there is a leak.This method is simple and intuitive, but has limited recognition of micro-leakage and is generally suitable for leak detection of medium and above specifications.

5. High-end secrets of helium detection method

Helium detection method is a high-precision detection method and is mainly used in high-demand situations, such as aerospace and medical equipment.Because helium molecules are small and highly permeable, it is easier to identify tiny cracks.Helium detection methods include vacuum leak detection and pressure leak detection. Professional equipment is extremely sensitive, but the equipment cost is high and requires professional operation.

6. Choose appropriate testing equipment

For different application scenarios, different detection equipment and methods need to be selected.For example, the pressure decay method can be used for simpler packaging detection or pipeline leakage, while for high-precision industries, such as semiconductors and medical devices, the highly sensitive helium detection method is recommended.Hirays provides a variety of sealing testing equipment. No matter what your application field is, we have a suitable solution.

7. Precautions during testing

When performing a tightness test, there are a few things to note to ensure accuracy.For example, changes in ambient temperature and humidity may affect detection results; whether the surface condition of the object to be detected is clean may also affect detection accuracy.In addition, stable pressure and testing time should be maintained during the testing process to ensure that the test results are repeatable and reliable.

8. Simple and easy home testing tips

Tightness testing is not only important in the industrial field, but also cannot be ignored in family life.For example, household water pipes, sealed cans, vehicle seals, etc. all need to be tested.A simple method is to apply soapy water on the test area and blow air inward with a blower. If there is a leak, the soapy water will generate foam. This method is simple and economical and suitable for small-scale testing at home.

in conclusion

Sealing testing is related to product quality and safety and is a key technology that cannot be ignored.Hirays provides a variety of sealing testing solutions from simple to complex, from entry-level to high-end, making your work and life more secure.Whether you are a business user or a home user, you can find detection methods and equipment that suit you.Now try Hiraysi's sealing testing products to make your life less "leaky" and more "peaceful"!