一種基于電加熱的導(dǎo)熱油系統(tǒng)開題報告

歡迎下載本文檔參考使用，如果有疑問或者需要CAD圖紙的請聯(lián)系q1484406321編號無錫太湖學(xué)院畢業(yè)設(shè)計（論文）相關(guān)資料題目： 一種基于電加熱的導(dǎo)熱油系統(tǒng)設(shè)計及其關(guān)鍵零部件的加工工藝設(shè)計 信機 系 機械工程及自動化專業(yè)學(xué) 號： 0923249 學(xué)生姓名： 吳 振 揚 指導(dǎo)教師： 薛慶紅 （職稱：副教授 ） （職稱： ） 2013年5月25日目 錄一、畢業(yè)設(shè)計（論文）開題報告二、畢業(yè)設(shè)計（論文）外文資料翻譯及原文三、學(xué)生“畢業(yè)論文（論文）計劃、進度、檢查及落實表”四、實習(xí)鑒定表無錫太湖學(xué)院畢業(yè)設(shè)計（論文）開題報告題目：一種基于電加熱的導(dǎo)熱油系統(tǒng)設(shè)計及其關(guān)鍵零部件的加工工藝設(shè)計 信機 系 機械工程及自動化 專業(yè)學(xué) 號： 0923249 學(xué)生姓名： 吳 振 揚 指導(dǎo)教師： 薛慶紅 （職稱：副教授） （職稱： ）2012年11月20日課題來源來源于企業(yè)，為企業(yè)正在生產(chǎn)系統(tǒng)，要求學(xué)生熟悉流體傳動的基本原理，液壓管路的設(shè)計和接頭設(shè)計，同時運用機械專業(yè)知識，設(shè)計該系統(tǒng)中關(guān)鍵零部件的機械加工工藝設(shè)計。科學(xué)依據(jù)（1）課題科學(xué)意義隨著科學(xué)技術(shù)的進步和工業(yè)生產(chǎn)的發(fā)展，有機熱載體爐得到了不斷的發(fā)展和應(yīng)用。雖然有機熱載體爐的工作壓力比較低，但是爐內(nèi)熱傳導(dǎo)液溫度高，且大多熱傳導(dǎo)液具有易燃易爆的特性，一旦在運行中發(fā)生泄漏，將會引起火災(zāi)、爆炸等事故，這樣不僅有很重大的財產(chǎn)損失，嚴(yán)重的甚至?xí)斐扇藛T傷亡。因此，對有機熱載體爐的安全運行和管理，必須高度重視，防患于未然。電熱油爐作為一種直接的熱能供給方式，已成為一種基礎(chǔ)且關(guān)鍵的工業(yè)及民用設(shè)施。隨著全球經(jīng)濟的快速增長，工業(yè)發(fā)展及城市建設(shè)步伐的不斷加快，為電熱產(chǎn)業(yè)帶來了無限商機。（2）研究狀況及其發(fā)展前景導(dǎo)熱油系統(tǒng)是企業(yè)正在用的設(shè)備，可在較低的運行壓力下，獲得較高的工作溫度，有效降低管線和鍋爐的工作壓力。導(dǎo)熱油系統(tǒng)熱傳導(dǎo)效率高、熱損失小，升溫快、降溫慢。溫度控制精確，受熱相對均勻。成倍延長設(shè)備使用壽命。閉式循環(huán)和開式操作均安全可靠。節(jié)約能耗約50%左右，對大氣煙塵排放減少一半。節(jié)油節(jié)水節(jié)電，對于沙漠缺水、高寒地區(qū)、缺電地區(qū)推廣價值高。研究內(nèi)容電熱式油加熱器（電熱油爐）是一種新型、節(jié)能、能提供高溫?zé)崮艿墓I(yè)設(shè)備。供熱原理：以電熱升溫，采用導(dǎo)熱油作傳熱介質(zhì)；在閉路循環(huán)系統(tǒng)中通過泵使熱載體強制循環(huán)，在低壓、高溫狀態(tài)下運行，直接釋放熱量，從而達到了提供熱源的目的。經(jīng)用熱設(shè)備卸載后，重新通過循環(huán)泵，回到加熱器，再吸收熱量，傳遞給用熱設(shè)備，如此周而復(fù)始，實現(xiàn)熱量的連續(xù)傳遞，使被加熱物體溫度升高，達到加熱的工藝要求。將熱能輸送給用熱設(shè)備后，繼加熱循環(huán)再加熱再循環(huán)的特種工業(yè)油爐擬采取的研究方法、技術(shù)路線、實驗方案及可行性分析1、到圖書館或網(wǎng)上查閱相關(guān)資料，查找相關(guān)書籍。對導(dǎo)熱油系統(tǒng)深入了解2、工藝性分析，選用合理的零部件。3、工藝方案確定，包括工序性質(zhì)、順序及其種類組合，編寫法蘭的工藝三卡。4、總裝圖的繪制，編制技術(shù)文件。課題完全由生產(chǎn)數(shù)據(jù)決定整個系統(tǒng)裝配圖及其零件圖，通過對實際情況的了解，以數(shù)據(jù)為依據(jù)進行設(shè)計分析，具體的設(shè)計計算也完全可以通過查表或者書籍獲得，加上對于整套設(shè)計有完整的設(shè)計思路，完全有可行性。研究計劃及預(yù)期成果研究計劃：2012年11月12日-2012年12月2日：按照任務(wù)書要求查閱論文相關(guān)參考資料，填寫畢業(yè)設(shè)計開題報告書。2012年12月3日-2013年1月20日：機械制造實訓(xùn)2013年1月21日-2013年3月1日：到企業(yè)實習(xí)，了解本專業(yè)實踐知識2013年3月4日-2013年3月8日：查閱與設(shè)計相關(guān)的資料不少于10篇，其中外文不少于5篇。2013年3月11日-2013年3月15日：翻譯外文資料（8000-10000字符）。2013年3月18日-2013年3月22日：分析導(dǎo)熱油系統(tǒng)的工作原理，熟知導(dǎo)熱油系統(tǒng)在生產(chǎn)中的應(yīng)用。2013年3月25日-3月29日：確定導(dǎo)熱油系統(tǒng)的結(jié)構(gòu)2013年4月1日-4月5日：選用合理的零部件2013年4月8日-4月12日：主要零件設(shè)計及制造工藝的確定2013年4月15日-4月19日：初步繪制導(dǎo)熱油系統(tǒng)裝配圖2013年4月22日-4月26日：修改導(dǎo)熱油系統(tǒng)裝配圖2013年4月29日-5月3日：繪制導(dǎo)熱油系統(tǒng)非標(biāo)零件圖2013年5月6日-5月10日：填寫法蘭盤工藝三卡2013年5月13日-5月17日：完成設(shè)計說明書（論文）、摘要和小結(jié)2013年5月20日-5月25日：整理所有資料，打印后上交指導(dǎo)教師，準(zhǔn)備答辯預(yù)期成果：1完成系統(tǒng)裝配圖：1張（A0或A1）；2零件圖：主要非標(biāo)準(zhǔn)件零件圖（不少于5張）；3工藝三卡：3份；4設(shè)計說明書：1份；5翻譯8000以上外文印刷字符或譯出約5000左右漢字的有關(guān)技術(shù)資料或?qū)I(yè)文獻，內(nèi)容要盡量結(jié)合課題。特色或創(chuàng)新之處1、使用CAD，繪圖方便快捷，方便改變參量，能夠直觀表現(xiàn)加工的零件。2、在設(shè)計時通過對系統(tǒng)的深入了解，真實地知道設(shè)計里存在的不足。3、電加熱的導(dǎo)熱油系統(tǒng)比一般加熱設(shè)施更高效，節(jié)能環(huán)保。已具備的條件和尚需解決的問題已具備的條件： 設(shè)計方案思路已經(jīng)非常明確，已初步具備設(shè)計基礎(chǔ)，工程制圖與AutoCAD，機械制造工藝學(xué)，工程材料及熱處理等知識，完全含蓋了設(shè)計所涉及的各個方面。 能夠使用相關(guān)制圖軟件繪制裝配圖及其零件圖。尚需解決的問題：對設(shè)計的每個環(huán)節(jié)考慮不是很周全。在法蘭盤的設(shè)計時，要準(zhǔn)確掌握加工余量、切削用量、進給量、切削速度等各種要素。對系統(tǒng)里的標(biāo)準(zhǔn)件使用需也要相當(dāng)注意。指導(dǎo)教師意見 指導(dǎo)教師簽名：年 月 日教研室（學(xué)科組、研究所）意見 教研室主任簽名： 年 月 日系意見 主管領(lǐng)導(dǎo)簽名： 年 月 日英文原文Machine from the early egyptians pedal cars and John Wilkinson boring machine development. They provide rigid support for the workpiece and cutting tool and can precisely control their relative position and relative velocity. Basically speaking, the metal cutting refers to the woven form a sharpen tools from ductile workpiece surface to remove a narrow metal. Chip is abandoned product, compared with other artifacts chip is shorter, but not for the thickness of the cutting part have some increase. Geometry on the surface of the workpiece depends on the shape of the tool and the machining tool path in the process of operation. Most of the manufacturing process to produce different geometric shapes of parts. If a rough workpiece on the center shaft rotation and tool cutting surface parallel to the center of rotation, a rotating surface is created, this operation is called turning. If a hollow pipe in the same way, surface processing, this operation is called boring. When changing diameter evenly and produced a conical surface, this is known as a taper turning. If the radius of cutter contact point to change the movement way, then an outline like a ball of artifacts produced; Or if the workpiece is enough short and support is very rigid, so forming tool relative to the axis of rotation normal feed can generate an outer surface, short conical or cylindrical surface can also be formed. Flat surfaces are often needed, they can by the cutting tool relative to the axis of rotation of the radial cutting contact point. When planing for larger artifacts easier to fix knives positioned below the cutting tool and workpiece. Tool can reciprocating feed. Forming surface can be generated through the molding tooling. Using double groove drill to drill deep is the hole diameter hole of 5 to 10 times. Bit rotation and workpiece rotating cutting blade and the relative motion between the workpiece is an important factor. When milling a rotary tool with lots of cutting edges in contact with the workpiece, workpiece relative tool movement slowly. Flat or forming surface according to the shape of the geometry of the cutting tool and the way of feed may be produced. Can produce horizontal or vertical shaft rotate and can progress to in any of the three coordinate directions. Through a variety of machining operations remove the number and speed of the materials is huge, as in the large turning processing, or tiny, such as grinding and super precision machining only the highs were removed. One machine tools to perform three major function: 1. It supports workpiece or jig and tool (2) it provides relative motion for the workpiece and tool 3. In each case provide a range of feeding and in the speed of up to 4-32 kinds of choices. Speed, feed and cutting depth is the processing of the three variables. Other measure is tapping and cutting tool materials, coolant and geometry, of tools to remove metal speed and the power needed to rely on these variables. Cutting depth, feed and the cutting speed is a metal processing working procedure must be established in the mechanical parameter. Both impact force to remove the metal, power and speed. Cutting speed can be defined as the rotating speed when the week record surface relative to any instant radiating the spread of the needle, or the distance of two adjacent grooves. Cutting depth is into the depth and the depth of the groove. All processing operations including turning, boring can be categorized as rough machining, finish machining or semi finishing. Is processed as quickly as possible and effective to remove a large number of materials, and left a small part of the workpiece material used in finish machining. Finishing for artifacts for the size, shape and surface accuracy. Sometimes, semi-finishing leave schedule for finishing a certain amount of material, it is prior to finish machining. Generally speaking, the longer the workpiece at the same time by one or two lathe center support. Taper hole, the so-called central hole, on both ends of the artifacts of the drill is suitable for lathe center - usually along the axis of the cylindrical workpiece. Artifacts near for side frame is usually supported by the tailstock center, near the main bearing that comprised of main bearing center support or by jaw clamping. This approach can be strong to artifacts and can be smoothly will force to the workpiece; Auxiliary support provided by the chuck of the workpiece to reduce cutting chatter of the trend, if we can carefully and accurately with the method of chuck supporting artifacts, you can obtain accurate results. Between the two centers supporting artifacts can be very accurate results. One end of the workpiece has been processing, then the workpiece can be turned. On a lathe processing at the other end, center hole as accurate positioning and carry the workpiece weight and resist the bearing surface of cutting force. When the workpiece is removed from the lathe for any reason, center hole will be accurately to make back to work on the lathe or another lathe or a cylindrical grinding machine. Is not permitted to chuck and workpiece clamp on the main bearing lathe center. The first thought is, however, a quick method of adjust the chuck on the workpiece, but because it is not allowed in the chuck clamping is also supported by the lathe center is not possible. Provided by the lathe center adjustment will not be able to continue and claw plate can be damaged by pressure center hole and lathe center, even the lathe main spindle. Floating claw discs for the above statement provides an exception, it almost completely used in high production, the chuck is the real work driver and not for the same purposes such as three jaw, common used four jaw chuck. As produced in the shape of a kind of method, all machining is the most commonly used in the process of manufacturing and is one of the most important method. Machining process is a process generated shape, in this process, drivers device on the parts of some material in the form of a chip has been removed. Although in some occasions, the workpiece without support, use of mobile equipment to machining, but most of the mechanical processing is through the supporting artifacts and supporting tools and equipment to complete. Small volume, low cost. Machining in manufacturing, there are two applications. Is casting, forging and working pressure, each special shape, even a part, is almost always have higher mould cost. The shape of the weld depends largely on the raw materials. By using the total cost high but no special tooling equipment, processing is possible; Starting from almost any form of raw materials, as long as the external dimensions large enough, the arbitrary shape of material design. So when production processing is the preferred method, one or several parts during mass production, even design logically lead to the casting parts, forging or stamping products. High precision and surface accuracy. Mechanical processing of the second application is based on the possible high precision and surface accuracy. If mass production on the rest of the process, a lot of low volume parts will produce low but acceptable tolerance. Many, on the other hand, the shape of the parts is produced by some of the large deformation process in general, and only in selected with very high precision surface processing. The paint process, for example, is seldom produce any way other than mechanical processing and followed by a small hole on the pressure after the operation can be processed. Basic tool when cutting the work fully description method has four factors: cutting tool geometry, cutting speed and cutting depth. Cutting tools must be made of proper material; It must have a certain strength, roughness, hardness and resistance to fatigue. Cutting tool geometry described by the surface and Angle of each cutting operation is correct. Cutting speed is refers to the cutting edge through the speed of working face, it has been said by number of feet per minute. For machining efficiency, cutting speed relative to the combination of special work must have the appropriate size. In general, harder the workpiece, the less speed. Feed is the rate of tool into the workpiece. When the workpiece or tool rotation and feeding unit is inch per revolution. As it moves, a tool or workpiece reciprocating feed unit is inch time, overall, in other similar cases, feed and the cutting speed is inversely proportional to. Ins in cutting speed, cutting tool into the workpiece distance said, when it refers to cutting the width of the chip or the linear cutting chip thickness. When rough machining cutting depth is greater than finishing cutting depth. Heat generated during the metal cutting operations in the main and second deformation area and the results led to the complex temperature in the cutting tool, workpiece and chip. A typical isothermal first as shown, it can be seen that, as predicted, when the workpiece material through the main deformation, cut less, has a very large temperature gradient across the whole width of the chip. When the second chip deformation area and a short distance to reach maximum temperature. Because almost all the work is completed in metal cutting is converted into heat, can be predicted to increase removal per unit volume of metal cutting temperature will increase energy consumption. So before all the other parameters constant, Angle greaten, remove less energy per unit volume of metal and the cutting temperature. When considering the increasing lack of chip thickness and speed, the situation is more complicated. Cutting thickness tends to increase greatly influence the heat to the workpiece, tool, and can make the chip to stay in a fixed amount, at the same time, the change of cutting temperature will be small, but increase the cutting speed can reduce the heat is passed to the workpiece, at the same time, this will increase the main deformation of the chip temperature rise. In addition, the second deformation zone is relatively small, will raise the temperature in the deformation zone. Cutting parameters of other changes almost does not affect the removal of energy consumption per unit volume and the cutting temperature. So has shown that even small changes in cutting temperature has significant influence on tool wear rate, from cutting data to estimate the cutting temperature is appropriate. The most direct the most accurate method to detect high speed steel tools, trent gave details of the temperature distribution in the high speed steel tools. The technology is data detection based on high speed steel cutting tools and related to the microscopic changes of thermal history. Trent has describes the measurement of the temperature of cutting and processing a wide range of temperature distribution of workpiece when high speed steel tools. Using scanning electron microscope (sem) to study the fine scale microstructure change, the technology has been further developed. This technology is also used to study the high speed steel single point cutting tool and the temperature distribution of twist drill, Brittle fracture has been handled, tool wear there are basically three types. After the blade wear, boundary wear and the surface of the knife before wear. Blade wear occurred in the main cutting edge and the cutting edge. Main cutting edges is responsible for removing a lot of metal, which adds to the cutting force and temperature, if left unchecked will lead to the vibration of the cutting tool and workpiece, it can not efficiently cutting again. Cutting edge decide the size and surface accuracy, the sword of the wear and tear can lead to a large number of products after the surface precision of poor. According to actual cutting condition, the main causes of the cutting tool is unavailable work ahead of time on the surface of the knife wear very big, this led to an unacceptable part. Because of the stress distribution of a tool, just started sliding, sliding region of the friction between the chip and achieve maximum, the friction force is zero. So abrasive wear occurred in this area, the chip with more wear in and adjacent to the area, it is more than adjacent to it. This led to the local pitting on the surface of the cutting tool and some distance to the surface, this surface is usually part of the circular arc form. In many ways, and based on the actual cutting condition, boundary wear compared with the knife after surface is a less serious wear and tear, thus grinding blunt knife surface wear is a relatively common standards. Then, because of the author suggests that along with the increase of cutting speed, the addition of surface temperature increase more than the knife surface, due to temperature change seriously affect the wear rate of any type, boundary wear usually occurs in the case of high cutting speed. Cutter and cutting face contact place, the work surface wear than along the residual wear at the end of the worn surface areas is more obvious. This is because the local effects such as is not cutting face by the previous cutting, oxidation scale, formed by high temperature caused by work hardening. This partial wear generally associated with boundary wear, sometimes very serious. Despite Nick will not seriously affect the tool cutting performance, notch is tend to be more deep, if continue to cutting tools are likely to rupture. If any form of gradual wear and tear to make dramatic continue to exist, the tool will face a catastrophic failure, such as cutting tools cannot be cut again, in a good situation, workpiece scrapped, the worst, may cause damage to the machine tools. For carbide cutting tools and various types of wear, in the event of a catastrophic failure before using the longest service life limit. But for high speed steel cutting tool wear is uneven, has found that when wear to continue and even catastrophic failure, the most meaningful and can copy can be got as a result, of course, in practice, cutting time is far less than the fault time. Catastrophic failure occurs few phenomenon, one of the most common is the cutting force increases suddenly, artifacts appear bright ring, significant increase in noise. Tolerance is the greatest change in component size, basic size is allowed to change the amount limited by the size of the derivative and the tolerance range. Sometimes deviation is only allowed in one direction, it allows the tolerance on the hole or shaft changes without serious impact to cooperate. When changes in tolerances in both directions, known as completely deviation (positive and negative). Deviations are completely separate, and in the basic size of each side will have. Compared with minimum size and maximum size limit of size. Thus, tolerance is defined as the difference between these two sizes. Products have been finished the shape and size, it is often necessary to some type of surface precision is that they can perform their functions as well.