Chemical Deburring by BENSELER
CBE
As specialists in the field of deburring, BENSELER can draw on more than 40 years of experience. Industries such as automotive and mechanical engineering benefit from the precise finishing of metal surfaces of small and mass-produced parts that chemical deburring offers.
Find out more about the advantages of chemical deburring below.
What is Chemical Deburring?
Chemical deburring, or chemical bath deburring, allows iron and steel components to be precisely machined from all sides. The material is removed evenly from the entire wetted surface of the workpiece and is easily reproducible. The process is suitable for set goods and bulk parts as well as for complex, delicate workpieces that must not be subjected to thermal or mechanical stress.
In chemical deburring, parts are immersed in a solution and left in it until the burr on the component has dissolved. The number, sequence and duration of the immersion processes as well as the chemical concentration of the baths depend on the customer's specifications and the desired deburring result. The process at BENSELER is controlled accordingly. Further post-treatment - in the form of cleaning, for example - is usually not necessary.
In this way, internal and external burrs can be removed, edges rounded, scales and material overlaps removed and rough surfaces smoothed or polished without hydrogen embrittlement.
Advantages of Chemical Deburring at a glance
Chemical deburring is an electroless, electrochemical process.
Characteristics of Chemical Deburring at a glance:
• Removal of internal and external burrs
• Barreled goods (bulk goods) or set goods (in part-specific devices)
• Components free of burrs, flakes, scales and material overlaps
• Precisely defined and uniform removal on the component
• Removal independent of the mechanical characteristics, such as hardness
• All corners and edges are minimally rounded
• No further post-treatment (cleaning) necessary
• Parts are neither thermally nor mechanically stressed
• Surface can be smoothed to a certain residual roughness depth
• Depending on the C content, polishing of surfaces is also possible
• No hydrogen embrittlement
• Without external power source
Applications of Chemical Deburring
Examples of applications are:
• Deburring of small valve housings for hydraulic components, control pistons or filigree stamped parts
• Defined deburring after mechanical processing
• Rounding of edges
• Leveling and smoothing of surfaces
• Creation of shiny surfaces
For further information on our application examples, please contact us.
The Chemical Deburring process
1. Pre-Treatment
BENSELER uses a fully automated system for the chemical deburring of steel: The machine consists of over 20 different stations, in which various product carriers transport the parts as set or bulk goods. Several pre-treatment and rinsing stages are integrated into the system, which ensure that oily or greasy parts can be processed without any problems, so that the delivery condition of the parts to be deburred is almost irrelevant.
2. Chemical Deburring process
After pre-treatment, the parts are activated and neutralized before the deburring process and then ultrasonically cleaned, rinsed, preserved and dried in two stages (circulating air drying and vacuum drying) after deburring. This ensures that the parts can always be delivered dry and preserved. Subsequent oiling for long-term corrosion protection is also possible. Thanks to a variety of system programs, the specialists at BENSELER can efficiently process a wide range of parts.
Additional Services offerd
by BENSELER
In addition to chemical deburring, BENSELER offers the following customer services:
• Thermal deburring (TEM)
• Electrochemical machining (ECM)
• Water jet deburring (HDW)
• Cryogenic deburring (KRE)
• Selective Laser Melting (SLM)
• Industrial parts cleaning
Other special services are available upon request.