玻璃钢论文

什么是玻璃钢玻璃钢制品是指以树脂和玻璃纤维为原料加工而成的成品，玻璃钢制品主要有玻璃钢储罐、玻璃钢搅拌罐、玻璃钢冷却塔玻璃钢水箱玻璃钢桌椅玻璃钢管道，玻璃钢垃圾桶。玻璃钢的科学名称是玻璃纤维增强塑料，俗称玻璃钢。是国外20世纪初开发的一种新型复合材料，它具有质轻、高强、防腐、保温、绝缘、隔音等诸多优点。由于其强度相当于钢材，又含有玻璃成分，也具有玻璃那样的色泽、形体、耐腐蚀、电绝缘、隔热等性能，像玻璃那样，历史上形成了这个通俗易懂的名称“玻璃钢”。玻璃钢的由来传统的玻璃质地坚硬易碎裂，具有良好的透明度以及抗腐蚀效果;而钢制材料硬度足够不容易碎裂，也十分耐高温，却不具备良好的通透性。聪明的人们经过无数次反反复复的试验研究，终于制作出了硬度丝毫不弱于钢制材料的拥有耐高温及抗腐蚀、不易碎等特性的玻璃钢。玻璃钢的特点玻璃钢集传统玻璃与钢材的优点于一身，它的重量很轻，相对密度在5-0之间，只有碳钢的1/4-1/5，但它的拉伸强度却与碳钢接近，甚至超过碳钢。它也具有很轻的耐腐蚀性，对大气、水和一般浓度的酸、碱、盐以及多种油类和溶剂都有较好的抵抗能力。除此之外，玻璃钢还具有很好的绝缘性和可设计性等优良特性。玻璃钢的作用玻璃钢奇异造型、可定制、色彩随意调配等特点，深受各商家和销售者的青睐。铁路业、船舶工业、电气工业及通讯工程等各类行业。这些行业应用的主要玻璃钢产品有冷却塔、耐腐蚀管道、汽车制造用材及部件、火车车窗、大型钢船艇配套零部件、电缆保护管等。什么是玻璃钢?相信看过小编的文章之后，对玻璃钢都有了一定的了解吧。玻璃钢不仅上轻质高强，并且耐腐蚀，无论是水分，还是酸碱，都很难将它侵蚀掉。在工艺上，玻璃钢的使用也是非常广泛的，它的可设计性也是非常出众。玻璃钢制品在我们生活中渐渐变得熟悉，它代替了我们生活中部分金属的和塑料材料的使用。小编的介绍结束了，希望能够帮助到大家。

科技小论文 月食是由月月食是一种特殊的天文现象，指当月球运行至地球的阴影部分时，在月球和地球之间的地区会因为太阳光被地球所遮闭，就看到月球缺了一块。 也就是说，此时的太阳、地球、月球恰好或几乎在同一条直线地球在太阳与月球之间，因此从太阳照射到月球的光线，会被地球所掩盖。 以地球而言，当月食发生的时候，太阳和月球的方向会相差 180 度。古代月食记录有时可用来推定历史事件的年代。中国古代迷信的说法又叫做天狗吃月亮。月食可分为月偏食、月全食及半影月食三种。当月球整个都进入本影时，就会发生月全食；但如果只是一部分进入本影时，则只会发生月偏食。月全食和月偏食都是本影月食。 在月全食时，月球并不是完全看不见的，这是由於太阳光在通过地球的稀薄大气层时受到折射进入本影，投射到月面上，令到月面呈红铜色。视乎月球经过本影的路径及当时地球的大气情况，光度在不同的月全食会有所不同。 有时月球并不会进入本影而只进入半影，这就称为半影月食。在半影月食发生期间，月亮将略为转暗，但它的边缘并不会被地球的影子所阻挡。不过看月全食必须在晚上看，而且观看月食的机率比日食的机率少的多。 关于月食，还有一个故事：16世纪初，哥伦布航海到了南美洲的牙买加，与当地的土著人发生了冲突。哥伦布和他的水手被困在一个墙角，断粮断水，情况十分危急。懂点天文知识的哥伦布知道这天晚上要发生月全食，就向土著人大喊，“再不拿食物来，就不给你们月光！”到了晚上，哥伦布的话应验了，果然没有了月光。土著人见状诚惶诚恐，赶快和哥伦布化干戈为玉帛。

The glass fiber reinforced plastics pipeline and the container are able to bear corrosivity, but the molding , are able to bear an ageing , assemble steel , iron pipeline and container without exception better than waiting for aspect keeping an expedience in repair in ratio Ceaselessness is perfect with the glass fiber reinforced plastics pipeline and the container technology , the glass fiber reinforced plastics pipeline and container industry such as being used for petrochemical industry, metallurgy , being drained away water already broadly are Mount century nineties middle later stage, the technology and equipment having introduced the glass fiber reinforced plastics pipeline and the container in the homeland already comparatively successfully, play have arrived at important role to childbirth and application and dissemination promoting our country glass pipeline and the As the glass fiber reinforced plastics pipeline and the container key equipment producing a heavy calibre,large-scale Li steel fibre twines machine coming from Europe State marketplace, but the person price mainly highly , operation upkeep is pretty difficult and , domestic the same kind equipment still has but the certain gap in the field of reliability and controlling twining handicraft comparing with introducing Therefore, to the heavy calibre, glass fiber reinforced plastics pipeline and the container production facility and their navar optimization designs the research problem being that are one By that steel tube complete sets of equipment studying in a deepgoing way and analysis , we thinking that glass fiber reinforced plastics fibre twines machine to enter port and domestic glass,PC navar optimization designs the key technology being that glass fiber reinforced plastics fibre twines equipment childbirth and For this purpose, the author carries out the several the following aspect research job mainly: Drag the optimization design moving system Loads are big specifically for that equipment , operation is complicated wait for a characteristic, the chief axis has adopt the control technique exchanging the frequency conversion speed regulation vector , the handcart has adopt the advanced exchange servo control Two is to check systematic Design having accomplished the grating coder computer data collect card mainly, it can adopt two road signals (photoElectricity coder pulse signal respectively linking up with the chief axis and the handcart output axis) to be feedback amounts at the same time , have and functions, and structure simplicities such as direction identification , step-by-step Three are that the chief axis and the handcart harmonize under the control of tactics design and The factor disturbing indeterminacy specifically for system runs an environment is many , system builds the characteristic of model difficult to wait, "controller having designed mixing up that the double mode takes to amendment a factor", and by the biax modules such as the adjustment under the control of drifting about , speed school nuclear control designing that , the tracking under the control of having accomplished the handcart and the chief axis fairly Newly designed PC machine , inner lining machine , deciduate machine controlling system but intertwining with each other being used for glass fiber reinforced plastics pipeline and container , not only, price is low and operation upkeep is more reliable compared with abroad the same kind The thesis content is arranged for as follows: The characteristic , significance , content that the problem studies introducing glass fiber reinforced plastics material mainly reach 1st chapter with problem relevance technology development 2nd chapter has introduced that fundamental handicraft and main equipment that fibre twines develop condition mainly, and has introduced that fibre intertwines with glass fiber reinforced plastics the relevant basic law and basic 3rd chapter charges the train of thought and design plan introducing that navar overall plan, and PC control systematic 4th chapter introduces that the originally systematic software designs 5th chapter has introduced system debugging and the upkeep , has given systematic main part out electricity principle picture and the connection Keywords: Glass fiber reinforced plastics twines the equipment PC navar vector controlling the data collect exchanging a servo

用“在线翻译”翻译不就知道了吗？百度一搜就有了！

The glass fiber reinforced plastics pipeline and the container are able to bear corrosivity, but the molding , are able to bear an ageing , assemble steel , iron pipeline and container without exception better than waiting for aspect keeping an expedience in repair in ratio Ceaselessness is perfect with the glass fiber reinforced plastics pipeline and the container technology , the glass fiber reinforced plastics pipeline and container industry such as being used for petrochemical industry, metallurgy , being drained away water already broadly are Mount century nineties middle later stage, the technology and equipment having introduced the glass fiber reinforced plastics pipeline and the container in the homeland already comparatively successfully, play have arrived at important role to childbirth and application and dissemination promoting our country glass pipeline and the As the glass fiber reinforced plastics pipeline and the container key equipment producing a heavy calibre,large-scale Li steel fibre twines machine coming mainlyBy that steel tube complete sets of equipment studying in a deepgoing way and analysis , we thinking that glass fiber reinforced plastics fibre twines machine to enter port and domestic glass,PC navar optimization designs the key technology being that glass fiber reinforced plastics fibre twines equipment childbirth and For this purpose, the author carries out the several the following aspect research job mainly: Drag the optimization design moving system Loads are big specifically for that equipment , operation is complicated wait for a characteristic, the chief axis has adopted to exchange frequency conversion speed regulation vector control technique, the handcart has adopt the advanced exchange servo control Two is to check systematic Design having accomplished the grating coder computer data collect card mainly, it can adopt two road signals at the same timeThe thesis content is arranged for as follows: The characteristic , significance , content that the problem studies introducing glass fiber reinforced plastics material mainly reach 1st chapter with problem relevance technology development 2nd chapter has introduced that fundamental handicraft and main equipment that fibre twines develop condition mainly, and has introduced that fibre intertwines with glass fiber reinforced plastics the relevant basic law and basic And overall plan that 3rd chapter charges for introducing navar, PC controls the systematic design train of thought and design 4th chapter introduces that the originally systematic software designs 5th chapter introduces system debugging and defend, have given systematic main part out electricity principle picture and the connection Keywords: Glass fiber reinforced plastics twines equipment declining