外文翻譯---冷軋橫向偏移量的控制性能(文件)
【正文】 d macromolecule pounds are ketonic products, according to different requirements, their molecular weights are between 4 hundred thousand7 hundred thousand, they appear in polymer form and scarlet, half fluid, put them aside for a while, their surface shows metallic luster. Special properties: (1) High viscosity (2) Strong pressibility (3) Good thermal stability (4) Special chemical inertia (5) Without ageing phenomenon High energy elastic damping disc shock absorber High energy elastic damping material disc shock absorber produced by Jerrat (shorter form: disc shock absorber) are annular high energy damping shock absorber, its structure is pact and there is shock absorbing need in the direction of axial. Compared with disc spring, disc shock absorber eliminates plicated process of superposition mounting, its mounting is simple and doesn’t need to maintain. Because it realizes shock absorbing way with a shock absorbing instead of steel springs superposition, so its advantages of rigidity, ageing resistance stable mechanical property shown in practice are beyond parison. Excellent properties of elastic damping materials enable disc shock absorber to satisfy big load shock absorbing requirement at very small volume so that effectively save design space. Its these good properties are also suitable for the anchor bolt shock absorbing etc. situations. High energy damping buffer Basic principle By the action of dynamic applied force, the fast insertion of piston will result in steep increase of friction between piston and damping material and piston rod is decided by moving speed, both are in direct proportion. The friction between solid sealing parts is decided by internal pressure, ., the larger internal pressure is, the larger friction is (the pressure is produced by pressing the volume of elastic material chamber). This shows that high energy damping buffer makes full use of pressibility and high viscosity of elastic damping medium, it converts instantaneous impact energy into elastic potential energy(produced by pressing medium)and thermal energy(produced by friction)and rapid release. High energy damping buffer made by using above principle has strong buffering ability, and its volume is small, weight is light, its buffering energy is 3 times of which rubber buffer had at same volume, the highest energy absorptivity can reach 85%. The advantages of products Compared with rubber buffer, high energy damping buffer can resist high temperature and corrosion, can suit adverse circumstances, it has strong rigidity and high shock strength, it works stably and has no ageing and failure phenomenon. Compared with traditional pneumatic buffer and air oil buffer or hydraulic buffer, it is easy to mount ,its structure is pact, volume is small, weight is light and service life is long, it doesn’t need daily maintenance. Because
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