- Where are the interfaces between PVA and my production line?
You define the interface between your production line and the service offering in our plants. For instance, you can deliver the components for brazing to us fully machined, we clean them, perform the vacuum brazing process, and conduct any checks that may be necessary (e.g. impermeability). Naturally, we can assist with queries about material selection and creating component designs that are suitable for brazing.
The decision is yours—just talk to us. We will work with you to develop the optimum manufacturing strategy for your products.
- Is it also possible to perform vacuum brazing for large quantities?
Vacuum brazing is equally as suitable for joining single parts as it is for series production. Depending on the size of the component or the furnace, up to several hundred components can be processes simultaneously in a single furnace cycle. Fully-automated process management allows the systems to operate without supervision and ensures reproducible component quality.
- Can I also have entire assemblies manufactured and brazed at PVA LWT?
- What requirements must components for brazing fulfill?
A design that is adapted to suit the brazing technology used is a key criterion for successful vacuum brazing. This includes the dimensioning and position of the brazing gap as well as the choice of solder and the associated process parameters. Offering advice on designs that are compatible with brazing technology is part of our core expertise—just talk to us.
- Is it possible to bond multiple components in a single furnace cycle?
- What requirements must the component fulfill?
In diffusion bonding, the surface of the join is a key criterion for ensuring a secure material joint. The general rule is that the lower the surface roughness and waviness of the component, the better the joining result. Macroscopic damage such as scratches or cracks should always be avoided to ensure the highest levels of impermeability and strength.
- Can the service also be used for development projects?
- Is series production also possible?
- I am not sure if this joining technology is suitable for my component. Who can I contact?
- Which material combinations are possible?
Successfully joined similar material pairings:
- Austenitic steels (1.4301, 1.4404, etc.)
- Tool steels (1.2344, 1.2343, 1.2083, Böhler M333, etc.)
- High-alloy aluminum materials (e.g. AW 6061)
- Copper (oxygen-free)
- Titanium, and many more.
Successfully joined dissimilar material pairings:
- Tungsten to copper
- Titanium to copper
- Steel (e.g. 1.2767) to copper and many more.
- How much material allowance should be included?
- How long does a diffusion bonding process take?
- What is brazing supported by pressing force?
Large-scale joints cannot be brazed without distortion. Material distortion during vacuum brazing is problematic insofar as it can lead to brittleness and therefore a loss of strength due to the enlargement of the brazing joint. The application of sufficient pressing forces in the hot press can prevent this distortion. The result is securely brazed material joints.