Welded bellows are metal bellows manufactured by joining thin metal plates on precision disks while alternately welding their inner and outer diameters.
Bellows can be displaced in the axial direction, the axis perpendicular direction, and the angular direction with the pressure inside and outside cut off by welding.
- IRIE KOKEN’s welded bellows are compact and offer superior expansion/contraction, and long lifetime designs are also available.
- Expansion/contraction properties and spring characteristics can be set by changing the inner/outer diameter dimensions and plate thickness.
- Users can weld Y-type end fittings.
- These bellows are highly pressure-resistant.
About bellows materials --- Explanation of AM350 equivalent and other representative materials used for welded bellows
How to use bellows (1･2) --- Design precautions and handling precautions
Our lineup includes discrete bellows and welded bellows with a conflat flange at both ends.
All can be used under the following pressure, temperature, and specific life conditions..
Standard welded bellows selection procedures
Standard product estimate request form
<Standard specifications>
| Pressure conditions | (Internal) vacuum (External) atmospheric pressure |
|---|---|
| Temperature conditions | Ordinary temperature (baking temp. max. 250°C) |
| Operating conditions | Axial displacement only |
| Leak rate | 1×10-9 Pa・m3/s or less |
| Materials | (Bellows) SUS316L or AM350 equivalent (discrete bellows only) (Flange) SUS304L |
| Specific life conditions | (Discrete bellows) 10,000, 100,000, or 1,000,000 repetitions (with conflat flanges) 10,000 repetitions |
Even when standard products do not meet your specifications, we will make considerations on an individual basis. Please let us know your detailed specifications, when you have specific needs such as:
We will make recommendations adopting optimum designs for various applications. Please feel free to consult us.
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