Cryogenic Deburring by BENSELER
Cryogenic Deburring
In addition to other deburring processes, cryogenic deburring has also been part of the BENSELER portfolio since 2016. The surface specialists at BENSELER are the first choice in the consumer industry in terms of quality and sustainability.
Find out more about the advantages of cryogenic deburring and BENSELER's services below.
What is Cryogenic Deburring?
Cryogenic deburring is a surface-friendly process that is just as suitable for components made of plastics, thermoplastics, thermosets or elastomers as it is for deburring light metals, composite materials, zinc die-cast alloys and hybrid components. During cryogenic deburring, the specialists at BENSELER cool the components using liquid nitrogen, causing the adhering burrs to harden or become brittle. Once this state is reached, plastic granulate of different sizes and densities is thrown onto the component at high speed - the burrs break off.
Advantages of cryogenic deburring at a glance
The biggest advantage of cryogenic deburring is that, compared to conventional blasting processes, there are no changes to the surface structure, as it is not an abrasive process but an ablative one. This allows BENSELER to process even very delicate components gently.
Further characteristics of Cryogenic Deburring in an overview:
• Removal of external (in special cases also internal) burrs possible
• This process is considered to be very environmentally friendly
• No material wear, as only the burr flags are removed
Advantages compared to Thermal Deburring:
o No component distortion / no deformation
o No surface impairment; high surface quality
o No structural transformation
Applications of Cryogenic Deburring
Cryogenic deburring is mainly used in applications in the sealing industry, for example deburring O-rings (sealing rings). The process is also used for components for the furniture industry: scissor bearings or special inserts for door locks are ideally deburred in this way.
The Cryogenic Deburring process sequence
The drum is filled as set or bulk material. The drum is loaded in the system and the processing temperature is reached in the working chamber by the inflow of liquid nitrogen (down to - 150 degrees Celsius). The components, especially the burrs, cool down. The plastic granulate is then fed in via a blast wheel, which blasts the component surface. By means of cold embrittlement (the point at which the burrs become brittle), the burrs can now be easily removed with the plastic granulate.
Additional customer services for Cryogenic Deburring
In addition to cryogenic deburring, BENSELER offers the following customer services:
• Thermal deburring (TEM)
• Electrochemical machining (ECM + PECM)
• High-pressure water jet deburring (HDW)
• Chemical deburring (CBE)
• Selective Laser Melting including finishing (SLM)
• Industrial parts cleaning
Other special services are available upon request.