Today, a wide range of industries use vacuum systems. Excellent systems and profound process know-how are the preconditions for reproducible results and competitive prices. Over almost 30 years, Diener electronic has acquired plenty of relevant experience to become a technology leader in many different fields of vacuum technology.
Degassing in the vacuum
Materials are degassed to eliminate volatile substances. It is insignificant whether solid or liquid substances are involved. Vacuum degassing can for example remove any disagreeable taste or smell which bioplastics/biopolymers may have due to their specific composition; vacuum degassing makes them tasteless. Diener electronic vacuum systems can also be used to remove contaminants such as polycyclic aromatic hydrocarbons from materials. Another typical application is removing air enclosed in sealing compounds.
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A suitable process control is essential for achieving permanently good results in the degassing processes. In most cases, running defined pressure ramps is the key to success here. The most common mistake in degassing processes is pumping off to maximum vacuum only and maintaining this state. This creates a balance, and degassing of the substances does not happen at all or only at a very slow rate.
Another benefit of degassing components is the removal of volatile substances which may result in loss of adhesion when gluing, painting or coating. These substances can be neutralised in a vacuum chamber in a process which is customised to your component. For even better adhesion, opt for subsequent plasma treatment. Thanks to our innovative system, it can be run in the same unit. That’s killing two birds with one stone!
Altitude testing
Nowadays, suitability for air transport is mandatory for most components such as electric motors, sensitive sensors or common items such as rechargeable and regular batteries. Primarily lithium batteries must undergo a height simulation pursuant to UN 38.3: The batteries are exposed to a pressure of 116 mbar for more than six hours. While there is pressure equalization in the cargo holds of aircraft, it cannot completely compensate for the pressure fluctuations. Therefore, it is absolutely necessary to have tests and simulations at a pressure of under 800 mbar.
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Our vacuum systems can also simulate significantly lower pressures which occur for example during a pressure loss. Accordingly, components must sometimes be tested in an ultra-high vacuum at a pressure of 10-6 mbar or less. This is usually the case for components used in space. We are able to design systems for these applications, develop automated processes for a precise simulation, build the system, and commission it on your premises.
Vacuum storage systems
Sensitive components such as wafers or certain medical parts must under no circumstances be contaminated with foreign substances or air humidity. The safest way of storing highly sensitive components is under vacuum. In the vacuum, your components are protected from all external influences. If required, the chamber can be ventilated with gases such as nitrogen. Storage systems usually consist of several chambers. The chambers can be operated efficiently with one vacuum pump. If required, documentation of the storage conditions can be integrated in the control. We can provide vacuum storage systems in all application areas.
Controlling the systems and processes
The Diener electronic vacuum systems are controlled by means of the operating program specifically developed by us. It not only allows you to monitor the process but also to program and save a wide variety of process sequences. No matter how complex the requirements for your application: We develop, optimise and test your process to ensure perfect results.
High and ultra-high vacuum
With our patented aluminium vacuum chambers, we can implement practically any type of vacuum system and tailor it to your individual requirements. Our systems meet your process requirements, from the pressure range of low vacuum over medium vacuum up to ultra-high vacuum. Depending on your needs, we use different pumps such as a rotary vane pump, roots pump, membrane pump or turbo pump, either on their own or in various combinations.
Aluminium vacuum chambers
Available not only as part of a system but also as a stand-alone product
Our unique, patented aluminium vacuum chambers are not only available installed in plasma and vacuum systems but can also be bought as a stand-alone product. Choose from chambers designed from extruded sections or from modules of different sizes milled from solid aluminium.
FAQ Frequently Asked Questions
How can a vacuum be measured?
When selecting the appropriate vacuum measuring instrument, a number of questions need to be answered:
- What tolerance should the measuring instrument operate within?
- Which pressure range is relevant to the process?
- Might it be necessary to combine several measuring instruments?
In our systems, we mainly use Pirani sensors and capacitive pressure gauges. We would be happy to advise you on selecting the appropriate pressure measurement solution.
What are the advantages of vacuum drying without heating?
Diener electronic’s vacuum drying process utilises the lower boiling point under vacuum to degas temperature-sensitive materials. It is a gentle process, particularly suitable for electronic components.
What are the advantages of vacuum drying with heating?
If necessary, the vacuum chamber can be heated. The advantages of heating include a shorter drying time, uniform drying and the ability to process larger quantities of material.
What are pressure ramps in vacuum degassing?
Uncontrolled foaming or even overflow of the material is prevented by individually tailored pressure ramps.
Can solids be degassed?
Yes, odours, outgassing or contaminants can be removed before further processing, depending on the nature of the material.
What can be achieved with an altitude simulation?
The air pressure in a vacuum chamber is set to the expected flight altitude. The resulting tests – such as leak testing, material behaviour and the stability of electronic and mechanical components – play a major role in ensuring operational reliability.
Which sectors benefit from a height simulation?
Altitude simulators from Diener electronic are successfully used in the following sectors
- Electronics
- Battery technology
- Aviation components
- Packaging industry
- Aerospace
- Automotive
- Electronics
- Medical technology
- Sensors
- Research and Development
To what extent can Diener electronic tailor its vacuum systems to individual requirements?
Every process has different requirements in terms of chamber size, final pressure, process duration, heating capacity, cycle time and automation. That is why Diener electronic develops each system in collaboration with the customer and tailors it perfectly to the specific product and the desired process. Systems can be configured for applications ranging from rough vacuum through to fine vacuum and high vacuum. The appropriate vacuum pump is used for this purpose.
Diener electronic’s vacuum systems can usually be integrated into existing production lines.
What are the advantages of vacuum systems from Diener electronic?
Diener electronic offers you:
- 30 years’ experience in vacuum and plasma technology as well as process development
- the ideal chamber type, whether aluminium, stainless steel or glass
- customised chamber sizes
- vacuum pumps suited to the application
- in-house developed control systems
- Pre-configured process sequences,
- Quality assurance through documentation of pressure, temperature and time profiles
- Automation partners enable integration
What maintenance and safety measures need to be observed?
Regular maintenance of the vacuum pump, seals, sensors and filters ensures consistently high system availability and process reliability. Vacuum systems must only be operated in accordance with the operating instructions. Regular inspections of pressure vessels, seals and safety devices contribute to safe operation. Servicing must only be carried out by trained personnel from Diener electronic GmbH & Co KG.
