How to evaluate the reliability of optical devices, lasers, sensors and other product covers

Release time:

2024-05-11 08:42

Source:

When users use parallel sealing welding machine or capping machine to package component products, in addition to the daily monitoring of the dew point temperature of dry air in the equipment, the most important thing is the helium leak test after capping.

The basic principle and steps are as follows: first, the product is placed in the sealed tank head of the helium leak detection equipment, and then filled with helium to make the internal pressure much higher than the standard atmospheric pressure. Since helium is the smallest molecular weight gas except hydrogen, if there is a gap on the product shell, helium molecules can easily enter the product from the gap. The product is then removed, placed in the sealed jars of the mass spectrometer, and evacuated. At this time, if there is helium inside the product, it will leak out again through the shell gap and be detected by the mass spectrometer to give quantitative helium content data.

It is worth noting that in the industry, a group of products are usually tested for helium pressure together, and then the content of helium will be measured by a mass spectrometer. in the industry, the leakage rate standard of 5 × 10-9 pa. m/s (5 times 10 to the negative 9th Pascal per cubic meter per second) is generally adopted. If the leakage rate of a certain group of products exceeds the standard, it means that there must be unqualified products in the group.

In order to ensure that the water vapor content in the packaging device reaches the standard, the parallel sealing welding machine for butterfly packaging device and the three cap sealing machine series for TO coaxial packaging device designed by Beijing Aote Hengye Electric Equipment Co., Ltd. can ensure that the water vapor content in the sealing welding environment of the device is below 10ppm, and the fine leakage test of the sample after sealing welding can meet the requirements of the national standard GJB548B-2005, that is, the fine leakage rate is less than the leakage rate standard of 5 times 10 negative 9th Pascal per cubic meter per second. The yield can reach more than 99.5.

The company's spare helium mass spectrometer can provide customers with proofing and on-site testing. The packaged products fully meet the requirements of the national military standard and have been recognized by many military customers.

Ceramic shell and tube packaging technology and equipment

Car gauge sensor TO coaxial packaging and packaging equipment

recommend products

Manual Cap Sealer

Automatic Cover Opener

High Precision Cap Sealer

Semi-Automatic Cap Sealer

High efficiency Cap Sealer

One second Cap Sealer

< 1 2 3 4 > proceed page

Domestic and foreign agent hotline:13811414646
Telephone: Mr. Yin:+86 18600558941
Mobile phone: Mr. Yin:+8613811414646
Mailbox:athy@bjautotech.com.cn
Address: Building 8, Yard 5, Jinghai 2nd Road, beijing beijing Economic and Technological Development Zone

Focus on us

Business License