Jobs
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]
North Yorkshire is a ceremonial county in the Yorkshire and the Humber and North East regions of England. It borders County Durham to the north, the North Sea to the east, the East Riding of Yorkshire to the south-east, South Yorkshire to the south, West Yorkshire to the south-west, and Cumbria and Lancashire to the west. Northallerton is the county town.
The county is the largest in England by land area, at 8,654 km2 (3,480 sq mi), and had a population of 1,158,816 in 2021. The largest settlements are Middlesbrough (148,215) in the north-east and the city of York (141,685) in the south. Middlesbrough is part of the Teesside built-up area, which extends into County Durham and has a total population of 376,663 in 2011. The remainder of the county is rural, and the largest towns are Harrogate (75,515) and Scarborough (59,505). For local government purposes the county comprises four unitary authority areas — Middlesbrough, North Yorkshire, Redcar and Cleveland, and York — and part of a fifth, Stockton-on-Tees. The local authorities of York and North Yorkshire are part of a combined authority of the same name, and the local authorities of the other three areas are part of the Tees Valley combined authority. The county was historically part of Yorkshire.
The centre of the county contains a wide plain, called the Vale of Mowbray in the north and Vale of York in the south. The North York Moors uplands lie to the east, and south of them the Vale of Pickering is separated from the main plain by the Howardian Hills. The west of the county contains the Yorkshire Dales, an extensive upland area which contains the source of the River Ouse/Ure and many of its tributaries, which together drain most of the county before reaching the Humber estuary in the south. The Dales also contain the county's highest point, Whernside, at 2,415 feet (736 m).
