This core is wrapped with multiple layers of Damascus stainless steel clad to resist wear and corrosion as well as retain an extremely sharp edge.
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If you scramble or squeeze through tight trees and rocks while hiking, there's nothing better suited to resist wear and tear than Mammut's Trea Spine 50L.
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In addition, the material on the inside of the backpacks has been strengthened to resist wear, which was a common complaint on the first versions of the bags.
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Sometimes plastic liners are used to resist wear in grain facilities, where temperatures are lower than in mineral processing facilities.
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Strap rail and spike The earliest rails were simply lengths of timber. To resist wear a thin iron strap was laid on top of the timber rail. This saved money as wood was cheaper than metal. The system had the flaw that every so often the passage of the wheels on the train would cause the strap to break away from the timber.
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U.S. Ordnance also puts its weapons through a cold treatment. Called cryo for short, the process involves cooling the steel to approximately minus 300 degrees Fahrenheit, which increases the martensite content in its crystalline structure. This ultimately hardens and strengthens the metal. U.S. Ordnance uses cryo to relieve stresses in tooling and weapon materials, to increase the weapons’ service life and help resist wear.
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The spring is positioned such that axially the centerline of the spring is biased to the air side of the lip contact point. In order to exclude contaminants numerous types of dust lips or exclusionary lips may be used. Common elastomers include FKM, ACM, NBR, HNBR, and AEM. In order to resist wear, the compounds' durometer (hardness) is typically 70 to 85 Shore A (between that of an automobile tire and a soft inline-skate wheel).
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This heavy mortar is light enough to be transported by helicopter sling load, drop by parachute or carried in an APC such as the M113 Armored Personnel Carrier. It can also be towed as a normal artillery piece or even manhandled if necessary. The wheels on the carriage are the same as fitted to the M151 Jeep, and have handling rings to aid in manhandling it. All components are made of chrome-plated or stainless steel to resist wear and corrosion.
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Finishing of wood requires careful planning to ensure that the finished piece looks attractive, performs well in service and meets safety and environmental requirements. Planning for finishing begins with the design of furniture. Care should be taken to ensure that edges of furniture are rounded so they can be adequately coated and are able to resist wear and cracking. Careful attention should also be given to the design and strength of wooden joints to ensure they do not open-up in service and crack the overlying finish.
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If an engine is subjected to excessive RPM or sudden stoppage, all valves should be inspected for straightness. If a valve is bent, it will lead to failure very quickly and often damage other parts such as pistons, cylinder walls, other valves, valve guides, and valve-train components. Some older cars have relatively soft valve seats that wear faster when operated without leaded fuel. These usually can be updated with hardened valve seats that resist wear, regardless of whether leaded or unleaded fuel is used.
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All modern rails are hot rolled steel with a cross section (profile) approximate to an I-beam, but asymmetric about a horizontal axis (however see grooved rail below). The head is profiled to resist wear and to give a good ride, and the foot profiled to suit the fixing system. Unlike some other uses of iron and steel, railway rails are subject to very high stresses and are made of very high quality steel. It took many decades to improve the quality of the materials, including the change from iron to steel.
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The Texlon ETFE cladding system developed by the company consists of a number of layers of the UV stable copolymer ethylene tetrafluoroethylene (ETFE) welded into cushions or foils. The cushions are restrained around their perimeter by aluminium extrusions, which are in turn fastened to a supporting primary structure. The cushions are inflated with air at low pressure to provide insulation and to resist wear caused by wind.Vector Foiltec: Technology A Texlon ETFE cushion typically consists of two layers, although more layers can be added to enhance the cladding's insulation properties.
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In addition, internal air or oil passageways are machined so that as each stage completes retracting, a passage is open to supply the next stage with pressurized fluid to retract. Thus a double acting telescopic actuator usually retracts starting from the smallest diameter stage to finish with the largest stage retracting lastly. Because the seals used to accomplish this must pass over these internally machined fluid transfer holes, the seals are usually made from hard materials to resist wear and abrasion. They are often iron rings or glass reinforced nylon seals.
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The investigation concentrated on determining why the inner lower boom had failed at 70% of its retirement life.Accident Investigation Report, page 26Accident Investigation Report, page 24 The fatal fatigue crack in the inner lower boom had initiated at a bolt hole at Station 143, the rearmost of five bolt holes for attachment of the inner engine nacelle to the lower boom. These holes were ⅞ inch (2.22 cm) diameter and were anodised to resist wear and corrosion. A cadmium-plated steel bush of length 1 ⅝ inch (4.13 cm), chamfered at one end, was pressed into each hole.
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Neanderthals featured a protrusion of the jaw (prognathism), which was once cited as a response to a large bite force evidenced by heavy wearing of Neanderthal front teeth (the "anterior dental loading" hypothesis), but similar wearing trends are seen in contemporary humans. It could also have evolved to fit larger teeth in the jaw, which would better resist wear and abrasion, and the increased wear on the front teeth compared to the back teeth probably stems from repetitive use. Neanderthal dental wear patterns are most similar to those of modern Inuit. The incisors are large and shovel-shaped, and, compared to modern humans, there was an unusually high frequency of taurodontism, a condition where the molars are bulkier due to an enlarged pulp (tooth core).
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