DEEN
Thermometer

Aktuelle Forschungsprojekte

Image Thermal engines
Image IO-Scan - Integral measuring optical scanning method
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Certifiable connection types in cryogenics
Image Ice Slurry Generation
Image Practical training, diploma, master, bachelor
Image Refrigerants, lubricants and mixtures
Image IN-SITU SWELLING BEHAVIOUR OF POLYMER MATERIALS IN FLAMMABLE FLUIDS
Image Verification of storage suitability of cryo tubes
Image Preformance measurements of heat exchangers
Image Air-flow test rig for fan characteristic measurement
Image 3D - Air flow sensor
Image Measurements on ceiling mounted cooling systems
Image Low temperature – test facilities
Image Software for test rigs
Image Test procedures for electrical components

You are here:  Home /  Research and Development


Certifiable connection types in cryogenics

Dr. Andreas Kade

+49-351-4081-5117

Detachable and permanent connections, adhesive bond / form closure / force closure

The applications of cryogenic and vacuum technology impose special requirements on connection technologies. To determine the appropriate connections the application parameters such as temperature, vacuum and pressure, leak rate, materials, surface properties, radiation resistance, magnetic permeability etc. should be considered.

Connection technologies even if not being part of a standardized process more often have to be subject of a certification or qualification due to increasing quality requirements, e.g. pressure equipment directive 2014/68/EU. Therefore adequate designing and testing is necessary.

Alternative to electroplating process: cold gas sprayed copper layer (> 2 mm) with subsequent thread insertion
Alternative to electroplating process: cold gas sprayed copper layer (> 2 mm) with subsequent thread insertion

Innovations

The intended innovations relate to complete cryogenic systems considering the process chain from room temperature to low temperature range regarding the respectively required specifications. 

  • Development of application-related connection technologies with defined requirements and derived mechanical limit values 
  • Examination of existing connection technologies regarding applicability and further development towards secure and functional technologies
  • Evaluation and definition of application limits to aim for a feasible certification and the subsequent conformity with European guidelines

Project objectives

  • Application-related examination of various connection technologies
  • Further development and adaptation of existing connections to the requirements of cryogenic and vacuum technology
  • Examination on composite materials 
  • Examination on component geometries and their influence on the connection
  • Determination of process parameters (e.g. TIG welding, brazing,...) 
  • Determination of test limit values, especially for test specimens deviating from standards
  • Calculation according to common standards, simulation (FEM, ...) and testing
  • Realization and certification of selected connection technologies
Example of an examined connection between two materials (steel and PET) using a cutting edge at -90 ° C
Example of an examined connection between two materials (steel and PET) using a cutting edge at -90 ° C
show full article

Your Request

Data Privacy Settings

Cookies are used on our website. Some of them are mandatory, while others enable us to improve your user experience on our website.

Get more info about used cookies