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2019-07In Europe in the 1970s, with the development of urban modernization and the gradual improvement of environmental protection laws and regulations, diesel piling hammers, which were once the main driving force in the piling market, were gradua…
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2019-07The drill bit is a cutting tool used in general drills or drilling machines to cut circular holes. The basic principle of a drill bit is to rotate the cutting edge of the drill bit, cut the workpiece, and then remove drill cuttings from the…
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2019-07A drill bit includes a shank (1) having a tip with two cutting inserts (5, 5) located on a main plane (C-C), the cutting inserts (5, 5) having short central cutting edges oriented on a common second plane (E-E). The cutting edge forms a poi…
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2019-07Hard alloy is generally used for drill bits for PCB drilling, because epoxy glass cloth copper clad laminates wear tools very fast. Hard alloy is made by pressing and sintering tungsten carbide powder as matrix and cobalt powder as binder. …
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2019-07Because the hydraulic cylinder has to bear a great pressure, the heavier the load, the greater its pressure will be. Therefore, the maintenance of the hydraulic cylinder is the most important part of the maintenance of the entire hydraulic s…
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2019-071. As the operating pressure of the pneumatic system is generally in the range of 0.2-1.0Mpa, the cylinder cannot be used as a high-power power element. The hydraulic cylinder can be used as a relatively high-power component and a hydraulic…
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