Business Guide Top > Stainless Steel / Other Special Steel Processing > Helium leak test (by vacuum spray method)

Helium leak test (by vacuum spray method)

The helium leak test is used to test the piping system used for gas.

Helium (He) is a molecule that is particularly small in size and is easy to infiltrate into the molecular level gap. Another feature of Helium is that there is almost no Helium in the air and that makes it easier to detect Helium leakage.

Set the workpiece on the measuring instrument (leak detector)

Set the workpiece on the measuring instrument (leak detector) and turn on the switch to activate the vacuum pump, which brings the interior of the workpiece to a vacuum.

If there are fine cracks or gaps in the weld, etc., the outside air will easily enter.

Helium gas is blown to the welding point and the measured value is confirmed

Helium gas is sprayed with a spray gun to the weld area. If helium penetrates into the work from a minute gap, the measuring device detects helium and the numerical value on the display rises.

Gases used in semiconductor manufacturing processes are highly toxic to the human body and are also easily ignited.

We take great precautions in leakage testing and deliver to you the best products that you can use without worrying about the quality.

Copyright © NISSHO ASTEC CO.,LTD. All rights reserved.