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Deburr
There are many deburring processes, but the most common are mass-finishing, spindle finishing, media blasting, sanding, grinding, wire brushing, abrasive flow machining, electrochemical deburring, electropolishing, thermal energy method, machining, water jet deburring, and manual deburring.[5]
Manual
Manual deburring is the most common deburring process because it is the most flexible process. It also only requires low cost tools and allows for instant inspection.[6] Manual deburring is either done with tools like scrapers, files, sandpaper, stones and reamers or with handheld power tools that use abrasive points, sandpaper, or cutters similar to those used to deburr during machining.
Electrochemical
Electrochemical deburring is the use of electrochemical machining to deburr precision work pieces and edges that are hard-to-reach, such as intersecting holes. The process uses a salt or glycol solution and electricity to dissolve the burr. The electric current is applied with a specialized tool to reach the burr location. Burrs are removed in 5 to 10 seconds, while the rest of the work piece is unaffected.[6]
Thermal
Thermal energy method (TEM), also known as thermal deburring, is a deburring process used to remove hard-to-reach burrs or burrs from multiple surfaces at the same time. The process uses an explosive gas mixture to provide thermal energy to burn off the burrs. It is the fastest burr removal process, requiring only 20 milliseconds to remove a burr.[7]
The process starts by loading the workpiece into an explosion-proof chamber, which is then sealed and clamped with approximately 220 metric tons (240 short tons). The chamber is then evacuated of air and filled with an oxygen and fuel mix; this mixture is pressurized to 0.5 to 1.9 MPa (73 to 276 psi). An electrical igniter then ignites the mixture, which burns for approximately 20 milliseconds, causing all of the sharp corners and burrs to burn away. The peak temperature reaches 3,000 °C (5,430 °F).[7]
Oxfordshire[a] is a landlocked county in the far west of the government statistical region of South East England. The ceremonial county borders Warwickshire to the north-west, Northamptonshire to the north-east, Buckinghamshire to the east, Berkshire to the south, Wiltshire to the south-west and Gloucestershire to the west.
The county has major education and tourist industries, and is noted for concentrations of performance motorsport, car manufacturing and technology companies. The University of Oxford is widely considered one of the leading universities in the world, and is linked to a concentration of local technology and science activities at locations such as the Harwell Science and Innovation Campus, while Oxford University Press is the largest firm among a concentration of print and publishing firms.
As well as the city of Oxford, other centres of population are Banbury, Bicester, Kidlington and Chipping Norton to the north of Oxford; Carterton and Witney to the west; Thame and Chinnor to the east; and Abingdon-on-Thames, Wantage, Didcot, Wallingford and Henley-on-Thames to the south. All its zones south of the Thames: the Vale of White Horse and parts of South Oxfordshire were within the historic county of Berkshire, including the highest point, the 261-metre (856 ft) White Horse Hill.[5]
Oxfordshire's county flower is the snake's-head fritillary.[6]
