Jobs
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]
Shrewsbury (/ˈʃroʊzbəri/ ⓘ SHROHZ-bər-ee, also /ˈʃruːz-/ ⓘ SHROOZ-)[1][2] is a market town, civil parish and the county town of Shropshire, England, on the River Severn, 150 miles (240 km) north-west of London. At the 2021 census, the parish had a population of 76,782.[3]
The town has Saxon roots and surviving institutions whose foundations date from that time and represent a cultural continuity possibly going back as far as the 8th century.[4][5]
The centre has a largely undisturbed medieval street plan and over 660 listed buildings,[6] including several examples of timber framing from the 15th and 16th centuries. Shrewsbury Castle, a red sandstone fortification, and Shrewsbury Abbey, were founded in 1074 and 1083 respectively by the Norman Earl of Shrewsbury, Roger de Montgomery.[7]
The town is the birthplace of Charles Darwin.[8] It has had a role in nurturing aspects of English culture, including drama,[9] ballet, dance[10] and pantomime.[10]
Located 9 miles (14 km) east of the Welsh border, Shrewsbury serves as the commercial centre for Shropshire and mid-Wales, with a retail output of over £299 million per year and light industry and distribution centres, such as Battlefield Enterprise Park, on the outskirts. The A5 and A49 trunk roads come together as the town's by-pass and five railway lines meet at Shrewsbury railway station.
