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Deburring
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]
Skegness (/ˌskɛɡˈnɛs/ skeg-NESS) is a seaside town and civil parish in Lincolnshire, England. On the Lincolnshire coast of the North Sea, the town is 43 miles (69 km) east of Lincoln and 22 miles (35 km) north-east of Boston. With a population of 19,579, it is the largest settlement in the East Lindsey district; it also incorporates Winthorpe and Seacroft, and forms a larger built-up area with the resorts of Ingoldmells and Chapel St Leonards to the north. The town is on the A52 and A158 roads, connecting it with Boston and the East Midlands, and Lincoln respectively. Skegness railway station is on the Nottingham to Skegness (via Grantham) line.
The original Skegness was situated farther east at the mouth of The Wash. Its Norse name refers to a headland which sat near the settlement. By the 14th century, it was a locally important port for coastal trade. The natural sea defences which protected the harbour eroded in the later Middle Ages, and it was lost to the sea after a storm in the 1520s. Rebuilt along the new shoreline, early modern Skegness was a small fishing and farming village, but from the late 18th century members of the local gentry visited for holidays. The arrival of the railways in 1873 transformed it into a popular seaside resort. This was the intention of the 9th Earl of Scarbrough, who owned most of the land in the vicinity; he built the infrastructure of the town and laid out plots, which he leased to speculative developers. This new Skegness quickly became a popular destination for holiday-makers and day trippers from the East Midlands factory towns. By the interwar years the town was established as one of the most popular seaside resorts in Britain. The layout of the modern seafront dates to this time and holiday camps were built around the town, including the first Butlin's holiday resort which opened in Ingoldmells in 1936.
The package holiday abroad became an increasingly popular and affordable option for many British holiday-makers during the 1970s; this trend combined with declining industrial employment in the East Midlands to harm Skegness's visitor economy in the late 20th century. Nevertheless, the resort retains a loyal visitor base and has increasingly attracted people visiting for a short holiday alongside their trip abroad; tourism increased following the recession of 2007–09 owing to the resort's affordability. In 2011, the town was England's fourth most popular destination for UK residents, and in 2015 it received over 1.4 million visitors. It has a reputation as a traditional English seaside resort owing to its long, sandy beach and seafront attractions which include amusement arcades, eateries, Botton's fairground, the pier, nightclubs and bars. Other visitor attractions include Natureland Seal Sanctuary, a museum, an aquarium, a heritage railway, an annual carnival, a yearly arts festival, and Gibraltar Point nature reserve to the south of the town.
Despite the arrival of several manufacturing firms since the 1950s and Skegness's prominence as a local commercial centre, the tourism industry remains very important for the economy and employment. Its low wages and seasonal nature, along with the town's aging population, have contributed towards high levels of deprivation among the resident population. Residents are served by five state primary schools and a preparatory school, two state secondary schools (one of which is selective), several colleges, a community hospital, several churches and two local newspapers. The town is home to the divisional police headquarters, a magistrates court and a lifeboat station.
